A device for removing impurities from a nanoscale calcium carbonate powder

Abstract

This utility model discloses an impurity removal device for nano-sized calcium carbonate powder, which includes a housing. Inside the housing is a conveying assembly, which includes two conveying rollers and a conveyor belt. A center plate is fixedly mounted on the middle surface of the conveyor belt. A demagnetizing mechanism is located at the front end of the housing, above the first conveying surface. The demagnetizing mechanism includes a magnetic rod, with lifting bars mounted on the sides of the magnetic rod. A cleaning component is located at the bottom of the lifting bars. When using this device, the magnetic rod selectively adsorbs the calcium carbonate powder in the storage space through the demagnetizing mechanism. The conveyor belt, in conjunction with baffles, forms an independent storage space, ensuring that each batch of material can fully contact the magnetic rod. Simultaneously, the cleaning component automatically scrapes off the magnetic impurities adsorbed on the surface, eliminating the need for manual cleaning.

Description

Technical Field

[0001] This utility model relates to the field of calcium carbonate powder impurity removal technology, and in particular to an impurity removal device for nano-sized calcium carbonate powder. Background Technology

[0002] Calcium carbonate powder is a white powdery substance composed of calcium carbonate. It is one of the most common inorganic compounds in nature and has wide applications in many fields such as industry, medicine, and food.

[0003] Calcium carbonate powder is an inorganic compound that is both practical and economical. With its diverse properties and wide availability, it has become an indispensable basic raw material in industrial production and daily life.

[0004] During the production process, the raw materials for calcium carbonate powder may be mixed with magnetic metal impurities such as iron and steel. If these magnetic impurities are not removed, the purity of the product will decrease. Demagnetization is a key step in the production of calcium carbonate powder to ensure purity, protect equipment, and meet industry standards.

[0005] Existing impurity removal equipment for nano-grade calcium carbonate powder mostly uses fixed magnetic rods, which can only perform static adsorption on the surface of the powder. After the magnetic rods are saturated, the machine needs to be stopped and manually cleaned, which is time-consuming and prone to secondary pollution, and cannot meet the needs of continuous production. Utility Model Content

[0006] Therefore, it is necessary to address the aforementioned technical issues. Most equipment uses fixed magnetic rods, which can only statically adsorb powder on the surface. Once the magnetic rods are saturated, the machine needs to be stopped for manual cleaning, which is time-consuming and prone to secondary pollution, and cannot meet the needs of continuous production.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A device for removing impurities from nano-sized calcium carbonate powder includes a housing. Inside the housing is a conveying assembly comprising two conveying rollers and a conveyor belt. The two conveying rollers are rotatably mounted at the front and rear ends of the housing. The conveyor belt engages with the surfaces of the two conveying rollers. A center plate is fixedly mounted on the middle surface of the conveyor belt, dividing its surface into a first conveying surface and a second conveying surface. Multiple baffles are evenly mounted on the surface of the first conveying surface, forming a storage space between adjacent baffles. A demagnetizing mechanism is located at the front end of the housing, above the first conveying surface. The demagnetizing mechanism includes a magnetic rod that moves within the storage space. Lifting bars are mounted on the sides of the magnetic rod, and a cleaning component is located at the bottom of the lifting bars. The cleaning component removes magnetic impurities from the surface of the magnetic rod.

[0009] In a preferred embodiment of the impurity removal device for nano-grade calcium carbonate powder provided by this utility model, a stabilizing column is provided on the surface of the lifting bar near the bottom end, and an insertion groove is provided on the end face of the magnetic rod adjacent to the stabilizing column. A limiting groove is provided on the inner wall of the insertion groove, the surface of the stabilizing column is movably inserted into the insertion groove, and a sliding strip is installed at the end of the stabilizing column. The sliding strip is slidably engaged in the limiting groove, and a spring is provided inside the insertion groove. The end of the spring is connected to the stabilizing column.

[0010] In a preferred embodiment of the impurity removal device for nano-grade calcium carbonate powder provided by this utility model, a stop is provided on the end face of the magnetic rod near the lifting bar, the cleaning component includes a collar, the collar is movably sleeved on the surface of the magnetic rod, a protrusion is fixedly installed at the bottom of the collar, a second cylinder is provided on the bottom end of the lifting bar away from the magnetic rod, and the output end of the second cylinder is connected to the protrusion.

[0011] In a preferred embodiment of the impurity removal device for nano-grade calcium carbonate powder provided by this utility model, a side sliding port is provided on the side of the box, and the second cylinder passes through the side sliding port through the box.

[0012] In a preferred embodiment of the impurity removal device for nano-grade calcium carbonate powder provided by this utility model, the top of the lifting bar extends through the top of the box body, a protruding plate is provided on the top of the lifting bar, and a first cylinder is provided on the top of the box body, with the output end of the first cylinder connected to the protruding plate.

[0013] In a preferred embodiment of the impurity removal device for nano-grade calcium carbonate powder provided by this utility model, a material distribution plate is installed inside the box and below the conveying assembly, and the material distribution plate is located directly below the center plate.

[0014] As a preferred embodiment of the impurity removal device for nano-grade calcium carbonate powder provided by this utility model, a support frame is installed at the bottom of the box, and a first discharge port and a second discharge port are opened at the front end of the box. The first discharge port and the second discharge port are divided by the material distribution plate, and the first discharge port and the second discharge port correspond to the first transmission surface and the second transmission surface, respectively.

[0015] In a preferred embodiment of the impurity removal device for nano-grade calcium carbonate powder provided by this utility model, a feeding assembly is provided at the rear of the top of the box. The feeding assembly includes a feeding box, which is installed at the top of the box. An extension box is provided below the feeding box, which penetrates the box. A rotary valve is rotatably installed inside the extension box.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The device uses magnetic rods to specifically adsorb calcium carbonate powder in the storage space. The strong magnetism can efficiently capture ferromagnetic impurities, ensuring the purity of the nano-sized powder. At the same time, the conveyor belt and baffles form an independent storage space, so that each batch of material can fully contact the magnetic rods, avoiding the loss of impurities and improving the thoroughness of impurity removal.

[0018] The cleaning component is driven by a second cylinder to slide the collar along the magnetic bar, which can automatically scrape off the magnetic impurities adsorbed on the surface without manual cleaning. This reduces labor intensity and avoids the decrease in impurity removal efficiency caused by magnetic bar saturation. The tight contact design between the collar and the magnetic bar ensures thorough removal of impurities and guarantees continuous and stable operation of the equipment.

[0019] The center plate divides the conveyor belt into two transmission surfaces. The purified calcium carbonate powder and the scraped magnetic impurities are conveyed through the first and second transmission surfaces, respectively. With the help of the lower distribution plate and independent discharge port, the two materials are completely separated, avoiding the back mixing of impurities and ensuring the purity of the finished powder. Attached Figure Description

[0020] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure;

[0022] Figure 2 This is a schematic diagram of the internal structure of the box;

[0023] Figure 3 A schematic diagram of the internal structure of the box from another perspective;

[0024] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 5 This is a schematic diagram of the demagnetizing mechanism.

[0026] The markings in the diagram are explained as follows:

[0027] 1. Housing; 2. Support frame; 3. Feeding assembly; 4. Conveying assembly; 5. Demagnetizing mechanism; 6. Side sliding port; 7. Center plate; 8. First transmission surface; 9. Second transmission surface; 10. First feeding port; 11. Second feeding port; 12. Dividing plate; 13. Baffle; 14. Magnetic rod; 15. Stop block; 16. Lifting bar; 17. Stabilizing column; 18. Insertion groove; 19. Spring; 20. Limiting groove; 21. First cylinder; 22. Collar; 23. Second cylinder; 24. Protrusion block. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] As described in the background section, most equipment uses fixed magnetic rods, which can only statically adsorb powder on the surface. After the magnetic rods are saturated, the machine needs to be stopped and manually cleaned. This operation is time-consuming and can easily cause secondary pollution, which cannot meet the needs of continuous production.

[0030] To solve this technical problem, this utility model provides an impurity removal device for nano-grade calcium carbonate powder, which includes a housing 1. The housing 1 is equipped with a conveying assembly 4. The conveying assembly 4 includes two conveying rollers and a conveyor belt. The two conveying rollers are rotatably installed at the front and rear ends inside the housing 1, respectively. The conveyor belt is fitted on the surface of the two conveying rollers. A center plate 7 is fixedly installed on the middle surface of the conveyor belt. The center plate 7 can divide the surface of the conveyor belt into a first conveying surface 8 and a second conveying surface 9. Multiple baffles 13 are evenly installed on the surface of the first conveying surface 8. A storage space is formed between two adjacent baffles 13. A demagnetizing mechanism 5 is provided at the front end of the housing 1 and above the first conveying surface 8. The demagnetizing mechanism 5 includes a magnetic rod 14. The magnetic rod 14 is movably located inside the storage space. A lifting bar 16 is installed on the side of the magnetic rod 14. A cleaning component is provided at the bottom of the lifting bar 16. The cleaning component is used to remove magnetic impurities from the surface of the magnetic rod 14.

[0031] The first conveying surface 8 can convey calcium carbonate powder, and the second conveying surface 9 can convey the captured ferromagnetic impurities.

[0032] By setting up a demagnetizing mechanism 5, the magnetic rod 14 can specifically adsorb calcium carbonate powder in the storage space. The strong magnetism can efficiently capture ferromagnetic impurities in it, ensuring the purity of the nano-sized powder. At the same time, the conveyor belt and the baffle 13 form an independent storage space, so that each batch of material can fully contact the magnetic rod 14.

[0033] Meanwhile, the cleaning components can automatically scrape off magnetic impurities adsorbed on the surface, eliminating the need for manual cleaning. This reduces labor intensity and avoids a decrease in impurity removal efficiency due to the saturation of the magnetic rod 14.

[0034] Example 1

[0035] Please refer to Figure 2-5 :

[0036] A stabilizing column 17 is provided on the surface of the lifting bar 16 near the bottom end. The end face of the magnetic rod 14 adjacent to the stabilizing column 17 is provided with an insertion groove 18. A limiting groove 20 is provided on the inner wall of the insertion groove 18. The surface of the stabilizing column 17 is movably inserted into the insertion groove 18, and a sliding strip is installed at the end of the stabilizing column 17. The sliding strip is slidably engaged in the limiting groove 20. A spring 19 is provided inside the insertion groove 18, and the end of the spring 19 is connected to the stabilizing column 17.

[0037] The magnetic rod 14 is movably connected to the stabilizing column 17 of the lifting bar 16 through the insertion groove 18 on the end face. The stabilizing column 17 is inserted into the insertion groove 18, and at the same time, the sliding strip at the end of the stabilizing column 17 is engaged in the limiting groove 20 on the inner wall of the insertion groove 18, further ensuring the stability of the magnetic rod 14 and ensuring that the magnetic rod 14 maintains a stable adsorption force. When the magnetic rod 14 moves to the storage space and comes into contact with the calcium carbonate powder, it uses strong magnetism to adsorb the ferromagnetic impurities mixed in the powder.

[0038] A stop 15 is provided on the end face of the magnetic rod 14 near the lifting bar 16. The cleaning component includes a collar 22, which is movably sleeved on the surface of the magnetic rod 14. A protrusion 24 is fixedly installed at the bottom of the collar 22. A second cylinder 23 is provided on the bottom end of the lifting bar 16 away from the magnetic rod 14. The output end of the second cylinder 23 is connected to the protrusion 24.

[0039] After the magnetic rod 14 finishes adsorbing the magnetic impurities of the calcium carbonate powder in the storage space, the lifting bar 16 moves the magnetic rod 14 upward, detaching it from the storage space. A large amount of magnetic impurities are adsorbed on the surface of the magnetic rod 14. The second cylinder 23 is activated, and its output end pushes the protrusion 24 at the bottom of the collar 22, causing the collar 22 to slide along the surface of the magnetic rod 14 from one end near the lifting bar 16 to the other. During the pushing process of the second cylinder 23, the elastic force of the spring 19 first pushes the magnetic rod 14 towards the second transmission surface 9. When inserted... After the groove 18 moves to the end of the stabilizing column 17, the magnetic rod 14 remains stable with the stabilizing column 17. At this time, the end of the magnetic rod 14 away from the stabilizing column 17 is above the second transmission surface 9. At this time, the thrust of the second cylinder 23 will cause the collar 22 to slide along the surface of the magnetic rod 14 from one end near the lifting bar 16 to the other end. Since the collar 22 is movably sleeved on the surface of the magnetic rod 14, it will make close contact with the surface of the magnetic rod 14 during the sliding process, scraping off the adsorbed magnetic impurities. After being scraped off, the magnetic impurities will fall onto the surface of the second transmission surface 9.

[0040] Example 2

[0041] Further optimizations to Example 1, specifically, such as... Figure 1-5 As shown:

[0042] A side sliding opening 6 is provided on the side of the housing 1, and the second cylinder 23 passes through the side sliding opening 6 to penetrate the housing 1;

[0043] When the lifting bar 16 moves the magnetic rod 14 up and down, the output end of the second cylinder 23 needs to move up and down synchronously with the collar 22. At this time, the side sliding port 6 provides space for the second cylinder 23 to slide up and down, ensuring that the lifting action of the lifting bar 16 is not restricted by the installation position of the second cylinder 23, and that the cylinder output end can always maintain connection with the collar 22 and drive it to slide laterally.

[0044] The top of the lifting bar 16 extends through the top of the housing 1. A protruding plate is provided on the top of the lifting bar 16. A first cylinder 21 is provided on the top of the housing 1. The output end of the first cylinder 21 is connected to the protruding plate.

[0045] When the first cylinder 21 is started, its output end drives the convex plate to move up and down through the telescopic action, thereby driving the lifting bar 16 to rise and fall synchronously along the through-hole at the top of the box 1.

[0046] Example 3

[0047] Further optimizations to Example 2, specifically, such as... Figure 1-5 As shown:

[0048] Inside the housing 1 and below the conveying assembly 4, a material distribution plate 12 is installed, which is located directly below the center plate 7.

[0049] After the nano-sized calcium carbonate powder and magnetic impurities fall from the first transmission surface 8 and the second transmission surface 9, the bottom of the inner cavity of the box 1 can receive these falling materials. Since the dividing plate 12 is located directly below the center plate 7, the dividing plate 12 can separate the nano-sized calcium carbonate powder and magnetic impurities.

[0050] A support frame 2 is installed at the bottom of the box 1. A first discharge port 10 and a second discharge port 11 are opened at the front end inside the box 1. The first discharge port 10 and the second discharge port 11 are divided by a dividing plate 12. The first discharge port 10 and the second discharge port 11 correspond to the first transmission surface 8 and the second transmission surface 9, respectively.

[0051] The nano-sized calcium carbonate powder after surface treatment on the first conveying surface 8 will be discharged through the first discharge port 10, and the magnetic impurities on the second conveying surface 9 will be discharged through the second discharge port 11.

[0052] A feeding assembly 3 is provided at the rear of the top of the box 1. The feeding assembly 3 includes a feeding box, which is installed at the top of the box 1. An extension box is provided below the feeding box, which penetrates the box 1. A rotary valve is rotatably installed inside the extension box.

[0053] The material to be processed is first loaded into the feeding box at the top of the box 1. The feeding box serves as a temporary storage container for the material. Through its own structure, it guides the material to the extension box below. The rotary valve installed inside the extension box rotates, and the cavity between its blades receives the material from above the extension box. As it rotates, it carries the material to the storage space. The amount of material falling per unit time can be precisely controlled to achieve quantitative feeding.

[0054] The impurity removal device for nano-sized calcium carbonate powder provided by this utility model is used as follows:

[0055] First, the nano-sized calcium carbonate powder to be processed is loaded into the feeding box of the feeding assembly 3 at the rear top of the housing 1. The feeding box guides the material to the extension box below through its own structure. When the rotary valve inside the extension box rotates, the cavity between its blades receives the material and, with rotation, quantitatively conveys the material to the storage space on the surface of the first transmission surface 8 of the conveying assembly 4 inside the housing 1, achieving precise and stable feeding. Next, the two transmission rollers of the conveying assembly 4 rotate, driving the conveyor belt to move, causing the calcium carbonate powder in the storage space on the first transmission surface 8 to be conveyed forward. When the material moves to below the demagnetizing mechanism 5... The first cylinder 21 drives the lifting bar 16 to descend, causing the magnetic rod 14 to extend into the storage space. The magnetic rod 14 uses strong magnetism to attract ferromagnetic impurities mixed in the powder. At the same time, the cooperation between the stabilizing column 17 and the insertion slot 18 ensures the stability of the magnetic rod 14 and ensures the adsorption effect. After demagnetization is completed, the first cylinder 21 drives the lifting bar 16 to rise, and the magnetic rod 14 is removed from the storage space. At this time, the second cylinder 23 is activated. Its output end, through the spatial restriction of the side sliding port 6, pushes the protrusion 24 at the bottom of the collar 22, causing the collar 22 to slide along the surface of the magnetic rod 14. During the sliding process, the spring 19 will initially push... After the magnetic rod 14 is positioned above the second transmission surface 9 and stabilized by the stabilizing column 17, the thrust of the second cylinder 23 causes the collar 22 to slide along the surface of the magnetic rod 14 from one end near the lifting bar 16 to the other. Since the collar 22 is movably fitted onto the surface of the magnetic rod 14, it will make close contact with the surface of the magnetic rod 14 during the sliding process, scraping off any adsorbed magnetic impurities. These impurities will then fall onto the surface of the second transmission surface 9. Immediately afterward, the second cylinder 23 drives the collar 22 to reset, returning it to the stop block 15. The collar 22 then exerts a thrust on the stop block 15, causing the magnetic... The rod 14 moves toward the second cylinder 23, thereby stabilizing the column 17 to compress the spring 19, and its surface can be re-inserted into the insertion slot 18. At this time, the magnetic rod 14 corresponds to the storage space. Finally, the conveyor belt continues to operate, and the demagnetized calcium carbonate powder on the first transmission surface 8 falls into the lower part of the box 1 as the front end of the conveyor belt moves. The magnetic impurities on the second transmission surface 9 also fall off as the conveyor belt moves. Under the division action of the dividing plate 12, the fallen material flows to the corresponding first discharge port 10 and second discharge port 11 respectively, and finally exits from the two discharge ports to complete the impurity removal process.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A device for removing impurities from nano-sized calcium carbonate powder, characterized in that, It includes a housing (1), inside which a conveying assembly (4) is provided. The conveying assembly (4) includes two transmission rollers and a conveyor belt. The two transmission rollers are rotatably installed at the front and rear ends inside the housing (1), respectively. The conveyor belt is fitted onto the surfaces of the two transmission rollers. A center plate (7) is fixedly provided on the middle surface of the conveyor belt. The center plate (7) can divide the surface of the conveyor belt into a first transmission surface (8) and a second transmission surface (9). The surface of the first transmission surface (8) is uniformly equipped with... Multiple baffles (13) are provided, and a storage space is formed between two adjacent baffles (13). A demagnetizing mechanism (5) is provided at the front end of the box (1) and above the first transmission surface (8). The demagnetizing mechanism (5) includes a magnetic rod (14). The magnetic rod (14) is movable inside the storage space. A lifting bar (16) is installed on the side of the magnetic rod (14). A cleaning component is provided at the bottom of the lifting bar (16). The cleaning component is used to remove magnetic impurities from the surface of the magnetic rod (14).

2. The impurity removal device for nano-sized calcium carbonate powder according to claim 1, characterized in that, The lifting bar (16) has a stabilizing column (17) on its surface near the bottom. The magnetic rod (14) has an insertion groove (18) on its end face adjacent to the stabilizing column (17). The inner wall of the insertion groove (18) has a limiting groove (20). The surface of the stabilizing column (17) is movably inserted into the insertion groove (18). A sliding bar is installed at the end of the stabilizing column (17). The sliding bar is slidably engaged in the limiting groove (20). A spring (19) is provided inside the insertion groove (18). The end of the spring (19) is connected to the stabilizing column (17).

3. The impurity removal device for nano-sized calcium carbonate powder according to claim 1, characterized in that, The magnetic rod (14) has a stop (15) on its end face near the lifting bar (16). The cleaning component includes a collar (22), which is movably sleeved on the surface of the magnetic rod (14). A protrusion (24) is fixedly installed at the bottom of the collar (22). A second cylinder (23) is provided on the bottom end of the lifting bar (16) away from the magnetic rod (14). The output end of the second cylinder (23) is connected to the protrusion (24).

4. The impurity removal device for nano-sized calcium carbonate powder according to claim 3, characterized in that, The side of the housing (1) is provided with a side sliding opening (6), and the second cylinder (23) passes through the housing (1) through the side sliding opening (6).

5. The impurity removal device for nano-sized calcium carbonate powder according to claim 1, characterized in that, The top of the lifting bar (16) extends through the top of the housing (1). A protruding plate is provided on the top of the lifting bar (16). A first cylinder (21) is provided on the top of the housing (1). The output end of the first cylinder (21) is connected to the protruding plate.

6. The impurity removal device for nano-sized calcium carbonate powder according to claim 1, characterized in that, A material distribution plate (12) is installed inside the housing (1) and below the conveying assembly (4), and the material distribution plate (12) is located directly below the center plate (7).

7. The impurity removal device for nano-sized calcium carbonate powder according to claim 6, characterized in that, The bottom of the box (1) is equipped with a support frame (2). The front end of the box (1) is provided with a first discharge port (10) and a second discharge port (11). The first discharge port (10) and the second discharge port (11) are divided by the dividing plate (12). The first discharge port (10) and the second discharge port (11) correspond to the first transmission surface (8) and the second transmission surface (9) respectively.

8. The impurity removal device for nano-sized calcium carbonate powder according to claim 1, characterized in that, A feeding assembly (3) is provided at the rear of the top of the box (1). The feeding assembly (3) includes a feeding box, which is installed at the top of the box (1). An extension box is provided below the feeding box, which penetrates the box (1). A rotary valve is rotatably installed inside the extension box.

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