Calcium carbonate powder grinding device

Abstract

The invention relates to the field of powder grinding, in particular to a calcium carbonate powder grinding device which comprises a frame body, the upper side of the frame body is rotationally connected with first rotating shafts which are symmetrically distributed, the first rotating shafts are connected with coarse grinding rollers, the lower side of the frame body is rotationally connected with second rotating shafts which are symmetrically distributed, and the second rotating shafts are connected with fine grinding rollers. The middle of the frame body is rotationally connected with a screen, and a rectangular groove is formed in the left side of the frame body and used for outputting materials on the screen. When large-particle calcium carbonate on the screen is more, the pushing plate is driven by the electric sliding rail to scrape off calcium carbonate on the screen, the first motor stops moving in the scraping-off process, no large-particle calcium carbonate continues to fall off in the scraping-off process, the scraped-off calcium carbonate is sent to the upper side of the frame body again through the receiving plate to be subjected to coarse grinding again, and the calcium carbonate can be recycled. And the cycle is repeated, so that the burden of the fine grinding roller is reduced, and the final calcium carbonate powder product is stable in quality.

Description

Technical Field

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

[0002] As an important industrial raw material, calcium carbonate powder is widely used in industries such as plastics, rubber, coatings, and papermaking. Its grinding process is usually divided into two stages: coarse grinding and fine grinding to ensure the fineness and uniformity of the final product. In the prior art, there is often a lack of effective screening steps for calcium carbonate powder after coarse grinding. The coarsely ground material directly enters the fine grinding stage, resulting in a large number of large particles that do not meet the requirements being mixed in the fine grinding process, increasing the burden on the fine grinding equipment and reducing the grinding efficiency. In addition, the presence of these large particles will also affect the fineness and uniformity of the final product, resulting in unstable product quality.

[0003] In order to overcome the above problems, it is particularly necessary to design a calcium carbonate powder grinding device that can effectively screen after coarse grinding and reuse the screened large particles. Summary of the invention

[0004] The object of the present invention is to provide a calcium carbonate powder grinding device to improve the problem of large particles existing in the fine grinding stage in the prior art.

[0005] A calcium carbonate powder grinding device comprises a frame, a first motor is installed on the upper side of the frame, a symmetrically distributed first rotating shaft is rotatably connected to the upper side of the frame, an output shaft of the first motor is connected to one of the first rotating shafts, a coarse grinding roller is connected to the first rotating shaft, a first gear is connected to the first rotating shaft, and the symmetrically distributed first gears are meshed with each other, a second motor is installed on the lower side of the frame, a symmetrically distributed second rotating shaft is rotatably connected to the lower side of the frame, the second motor is connected to one of the second rotating shafts, a fine grinding roller is connected to the second rotating shaft, a second gear is connected to the second rotating shaft, and the symmetrically distributed second gears are meshed with each other, a screen is rotatably connected to the middle part of the frame, a rectangular groove is opened on the left side of the frame, and the rectangular groove is used to output the material on the screen.

[0006] More preferably, a baffle plate is slidably connected to one side of the frame close to the rectangular groove, a spring is connected between the baffle plate and the frame, a trigger rod is connected to one side of the baffle plate close to the screen, and the trigger rod is squeezed and fitted with the screen.

[0007] More preferably, a gravity sensor and an electromagnet are installed on a side of the frame close to the material baffle plate, the gravity sensor is electrically connected to the first motor and the electromagnet, and a side of the screen close to the electromagnet is made of iron.

[0008] More preferably, an electric slide rail is installed on the screen, a push plate is connected to the slider of the electric slide rail, and the electric slide rail is electrically connected to the gravity sensor.

[0009] More preferably, the frame body is fixedly connected to the side wall of the rectangular groove with an external frame, and a symmetrically distributed third rotating shaft is rotatably connected inside the external frame, and the symmetrically distributed third rotating shafts are each provided with rollers, and a conveyor belt is wound around the rollers, and a material receiving plate is rotatably connected to the conveyor belt, and the material receiving plate is used to receive materials flowing out of the rectangular groove, and an elastic member is connected between the material receiving plate and the conveyor belt.

[0010] More preferably, one of the third rotating shafts and one of the second rotating shafts are both provided with pulleys, and a flat belt is wound around the pulleys.

[0011] More preferably, the frame is provided with symmetrically distributed material guide plates, and the bottom of the material guide plates is in contact with the adjacent coarse grinding roller.

[0012] More preferably, a recovery groove is provided on the upper side of the frame, and a paddle is rotatably connected in the recovery groove.

[0013] More preferably, a magnet is connected to one side of the shift plate close to the receiving plate, and the receiving plate is made of iron.

[0014] More preferably, a magnetic frame is slidably connected to the upper side of the frame, and the magnetic frame is used to remove iron impurities in the material.

[0015] Compared with the prior art, the present invention has the following advantages: the present invention performs coarse grinding and fine grinding on blocky calcium carbonate by coarse grinding rollers and fine grinding rollers, and screens out large particles of calcium carbonate through a screen after coarse grinding. In conjunction with a gravity sensor, when there are many large particles of calcium carbonate on the screen, the electric slide rail drives the push plate to scrape the calcium carbonate on the screen, and the first motor stops moving during the scraping process, so that no large particles of calcium carbonate continue to fall during the scraping, and the scraped calcium carbonate is re-sent into the upper side of the frame through the receiving plate for coarse grinding again, and the cycle is repeated, thereby reducing the burden on the fine grinding roller and ensuring the quality of the final calcium carbonate powder product is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a schematic diagram of a cutaway three-dimensional structure of the present invention;

[0018] Figure 3 It is a schematic diagram of a cutaway three-dimensional structure of the present invention;

[0019] Figure 4It is a three-dimensional structural schematic diagram of the screen, electric slide rail, push plate and other components of the present invention;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the baffle plate, spring, trigger rod and other components of the present invention;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the guide plate, the paddle plate, the magnetic suction frame and other components of the present invention;

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the paddle and the magnet of the present invention.

[0023] Figure numerals: 1. frame; 2. first motor; 3. first rotating shaft; 4. coarse grinding roller; 5. first gear; 6. second motor; 7. second rotating shaft; 8. fine grinding roller; 9. second gear; 10. screen; 11. rectangular groove; 12. material blocking plate; 13. spring; 14. trigger rod; 15. gravity sensor; 16. electric slide rail; 17. push plate; 18. external frame; 19. third rotating shaft; 20. roller; 21. conveyor belt; 22. receiving plate; 23. pulley; 24. flat belt; 25. guide plate; 26. recovery trough; 27. paddle plate; 28. magnet; 29. ​​magnetic suction rack. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0025] Embodiment 1: A calcium carbonate powder grinding device, such as Figure 1-Figure 7As shown, it includes a frame 1, a first motor 2 is installed on the upper side of the frame 1, and a symmetrically distributed first rotating shaft 3 is rotatably connected to the upper side of the frame 1, the output shaft of the first motor 2 is connected to one of the first rotating shafts 3, a coarse grinding roller 4 is connected to the first rotating shaft 3, a first gear 5 is connected to the first rotating shaft 3, and the symmetrically distributed first gears 5 are meshed with each other, a second motor 6 is installed on the lower side of the frame 1, and a symmetrically distributed second rotating shaft 7 is rotatably connected to the lower side of the frame 1, the second motor 6 is connected to one of the second rotating shafts 7, a fine grinding roller 8 is connected to the second rotating shaft 7, a second gear 9 is connected to the second rotating shaft 7, and the symmetrically distributed second gears 9 are meshed with each other, a screen 10 is rotatably connected to the middle part of the frame 1, and a rectangular groove 11 is opened on the left side of the frame 1, and the rectangular groove 11 is used to output the material on the screen 10.

[0026] A baffle plate 12 is slidably connected to one side of the frame 1 close to the rectangular groove 11, a spring 13 is connected between the baffle plate 12 and the frame 1, a trigger rod 14 is connected to one side of the baffle plate 12 close to the screen 10, and the trigger rod 14 is squeezed and fitted with the screen 10; a gravity sensor 15 and an electromagnet are installed on one side of the frame 1 close to the baffle plate 12, the gravity sensor 15 is electrically connected to the first motor 2 and the electromagnet, and the left side of the screen 10 is made of iron; an electric slide rail 16 is installed on the screen 10, a push plate 17 is connected to the slider of the electric slide rail 16, and the electric slide rail 16 is electrically connected to the gravity sensor 15.

[0027] An external frame 18 is fixedly connected to the side wall of the frame 1 close to the rectangular groove 11, and a symmetrically distributed third rotating shaft 19 is rotatably connected in the external frame 18. A roller 20 is arranged on the symmetrically distributed third rotating shaft 19, and a conveyor belt 21 is wound around the roller 20. A receiving plate 22 is rotatably connected to the conveyor belt 21. The receiving plate 22 is used to receive the material flowing out of the rectangular groove 11, and an elastic member is connected between the receiving plate 22 and the conveyor belt 21; one of the third rotating shafts 19 and one of the second rotating shafts 7 are provided with a pulley 23, and two pulleys 23 are rotatably connected to the frame 1, and a flat belt 24 is wound around the pulleys 23 on the same horizontal line. A recovery groove 26 is opened on the upper side of the frame 1, and a paddle plate 27 is rotatably connected in the recovery groove 26; a magnet 28 is connected to the side of the paddle plate 27 close to the receiving plate 22, and the receiving plate 22 is made of iron.

[0028] The working principle is as follows: pour the block calcium carbonate into the frame, start the first motor 2 and the second motor 6, the first motor 2 drives the first rotating shaft 3 to rotate, so that the coarse grinding roller 4 rotates, under the action of the first gear 5, the two coarse grinding rollers 4 rotate towards each other to grind the block calcium carbonate, the ground calcium carbonate falls on the screen 10, the powder and small particles continue to move downward through the screen 10, the second motor 6 drives the second rotating shaft 7 to rotate, so that the fine grinding roller 8 rotates, under the action of the second gear 9, the two fine grinding rollers 8 want to rotate, and the powder and small particles of calcium carbonate are finely ground. The operator The staff can place a collection frame at the bottom of the frame 1 to collect the finely ground calcium carbonate powder; the calcium carbonate with larger particles cannot pass through the screen 10. As the large particles of calcium carbonate accumulate on the screen 10, the weight gradually increases, so that the left side of the screen 10 swings downward, driving the trigger rod 14 to move downward, so that the baffle plate 12 moves downward, and when the trigger rod 14 moves downward to contact the gravity sensor 15, the upper surface of the screen 10 is flush with the bottom surface of the rectangular groove 11, and the gravity sensor 15 controls the first motor 2 to stop moving through the control module, so that the blocky calcium carbonate is no longer crushed and falls into the screen 10, and the gravity sensor The sensor 15 controls the electromagnet to be energized through the control module to adsorb the screen 10, and the gravity sensor 15 controls the electric slide rail 16 to start through the control module. The slider of the electric slide rail 16 drives the push plate 17 to move, pushing the large particles of calcium carbonate to the left, so that the large particles of calcium carbonate slide to the left through the rectangular groove 11 and fall onto the receiving plate 22. The second rotating shaft 7 drives the third rotating shaft 19 to rotate through the pulley 23 and the flat belt 24, so that the roller 20 drives the conveyor belt 21 to rotate, thereby driving the receiving plate 22 to rotate upward, and the receiving plate 22 moves upward to contact the dial plate 27 and squeeze the dial plate 27. It flips to the right side and is adsorbed on the receiving plate 22 through the magnet 28 through the dial plate 27 until the receiving plate 22 shows a downward trend to the right, and the large particles of calcium carbonate on the receiving plate 22 are poured back into the frame 1 through the recovery groove 26. In this way, the automatic reuse of large particles of calcium carbonate is achieved; and after the electric slide rail 16 drives the pushing plate 17 to move and reset, the gravity sensor 15 controls the electromagnet to cut off power and controls the first motor 2 to restart, so that the electromagnet no longer adsorbs the screen 10. Under the action of the spring 13, the baffle plate 12 drives the trigger rod 14 to move upward and reset, so that the screen 10 is reset.

[0029] In some embodiments, the distance between the two fine grinding rollers 8 is smaller than the distance between the two coarse grinding rollers 4 .

[0030] Embodiment 2: Based on embodiment 1, Figure 3 and Figure 6As shown, symmetrically distributed guide plates 25 are arranged in the frame 1, and the bottom of the guide plates 25 is in contact with the adjacent coarse grinding roller 4. The guide plates 25 guide the blocky calcium carbonate so that the blocky calcium carbonate can be accurately moved between the two coarse grinding rollers 4 for grinding, and the guide plates 25 are in contact with the coarse grinding roller 4 to scrape off the calcium carbonate adhered to the coarse grinding roller 4; a magnetic suction frame 29 is slidably connected to the upper side of the frame 1, and the magnetic suction frame 29 is used to remove iron impurities in the material.

[0031] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A calcium carbonate powder grinding device, characterized in that: The invention comprises a frame (1), a first motor (2) is mounted on the upper side of the frame (1), a symmetrically distributed first rotating shaft (3) is rotatably connected to the upper side of the frame (1), an output shaft of the first motor (2) is connected to one of the first rotating shafts (3), a coarse grinding roller (4) is connected to the first rotating shaft (3), a first gear (5) is connected to the first rotating shaft (3), the symmetrically distributed first gears (5) are meshed with each other, a second motor (6) is mounted on the lower side of the frame (1), and the frame (1) The lower side is rotatably connected to a symmetrically distributed second rotating shaft (7), the second motor (6) is connected to one of the second rotating shafts (7), a fine grinding roller (8) is connected to the second rotating shaft (7), the second rotating shaft (7) is connected to a second gear (9), the symmetrically distributed second gears (9) are meshed with each other, a screen (10) is rotatably connected to the middle of the frame (1), a rectangular groove (11) is provided on the left side of the frame (1), and the rectangular groove (11) is used to output the material on the screen (10).

2. A calcium carbonate powder grinding device according to claim 1, characterized in that: A material baffle plate (12) is slidably connected to one side of the frame (1) close to the rectangular groove (11); a spring (13) is connected between the material baffle plate (12) and the frame (1); a trigger rod (14) is connected to one side of the material baffle plate (12) close to the screen (10); and the trigger rod (14) is pressed and matched with the screen (10).

3. A calcium carbonate powder grinding device according to claim 2, characterized in that: A gravity sensor (15) and an electromagnet are installed on one side of the frame (1) close to the material blocking plate (12); the gravity sensor (15) is electrically connected to the first motor (2) and the electromagnet; and the side of the screen (10) close to the electromagnet is made of iron.

4. A calcium carbonate powder grinding device according to claim 3, characterized in that: An electric slide rail (16) is installed on the screen (10), a push plate (17) is connected to the slider of the electric slide rail (16), and the electric slide rail (16) is electrically connected to the gravity sensor (15).

5. A calcium carbonate powder grinding device according to claim 1, characterized in that: The frame body (1) is fixedly connected to an external frame (18) near the side wall of the rectangular groove (11), and a symmetrically distributed third rotating shaft (19) is rotatably connected inside the external frame (18), and the symmetrically distributed third rotating shaft (19) is provided with a roller (20), and a conveyor belt (21) is wound around the roller (20), and a material receiving plate (22) is rotatably connected to the conveyor belt (21), and the material receiving plate (22) is used to receive materials flowing out of the rectangular groove (11), and an elastic member is connected between the material receiving plate (22) and the conveyor belt (21).

6. A calcium carbonate powder grinding device according to claim 5, characterized in that: One of the third rotating shafts (19) and one of the second rotating shafts (7) are both provided with a pulley (23), and a flat belt (24) is wound around the pulley (23).

7. A calcium carbonate powder grinding device according to claim 6, characterized in that: The frame (1) is provided with symmetrically distributed material guide plates (25), and the bottom of the material guide plates (25) is in contact with the adjacent rough grinding roller (4).

8. A calcium carbonate powder grinding device according to claim 7, characterized in that: A recovery groove (26) is provided on the upper side of the frame (1), and a shifting plate (27) is rotatably connected in the recovery groove (26).

9. A calcium carbonate powder grinding device according to claim 8, characterized in that: A magnet (28) is connected to one side of the shifting plate (27) close to the material receiving plate (22), and the material receiving plate (22) is made of iron.

10. A calcium carbonate powder grinding device according to claim 1, characterized in that: The upper side of the frame (1) is slidably connected with a magnetic frame (29), and the magnetic frame (29) is used to remove iron impurities in the material.

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