A dryer for the preparation of nano-calcium carbonate

Abstract

This utility model relates to the field of nano-calcium carbonate drying technology and discloses a dryer for the preparation of nano-calcium carbonate. The dryer includes a drying tank with a feed inlet at the top. A stirring and vibration device is fixedly connected to the outer wall of the top of the drying tank. A sliding hole is provided at the top of the drying tank, and an intermittent injection device is slidably connected to the hole. An inner tank is fixedly connected to the outer wall of the stirring and vibration device, and a heating coil is fixedly connected to the outer wall of the inner tank. When the motor starts, the drive shaft and bushing rotate, driving the stirring rod to stir. At the same time, the scraper rotates to scrape off the calcium carbonate adhering to the inner wall of the inner tank. When the scraper presses against the semi-circular protrusion, it compresses the return spring. When the scraper leaves, the return spring returns to its original position. The semi-circular protrusion has multiple sets, which continuously squeeze to complete the stirring and vibration at the same time, which not only makes the stirring more uniform but also improves the drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of nano-calcium carbonate drying technology, specifically a dryer for the preparation of nano-calcium carbonate. Background Technology

[0002] Drying is a problem in the production of both light calcium carbonate and nano calcium carbonate. Nano calcium carbonate, in particular, still has a high moisture content even after filtration and pressure filtration. To facilitate the next production process, it must be dried to reach the specified moisture content.

[0003] Existing dryers for the preparation of nano-calcium carbonate generally consist of an outer tube and an inner tank, with a heating coil installed in between for drying. The inner tank is usually equipped with a stirring device to accelerate the drying process. However, when too much calcium carbonate is injected, stirring alone cannot make it flow sufficiently, thereby reducing drying efficiency and increasing costs. At the same time, uneven heating will also affect the performance of the prepared calcium carbonate. Utility Model Content

[0004] The purpose of this invention is to provide a dryer for the preparation of nano-calcium carbonate, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dryer for the preparation of nano-calcium carbonate, comprising a drying tank, wherein a feed inlet is provided at the top of the drying tank, a stirring and vibration device is fixedly connected to the outer wall of the top of the drying tank, a sliding hole is provided at the top of the drying tank, and an intermittent injection device is slidably connected to the opening, an inner tank is fixedly connected to the outer wall of the stirring and vibration device, and a heating coil is fixedly connected to the outer wall of the inner tank.

[0006] The stirring and vibration device includes a motor, a drive shaft, a bushing, a stirring rod, a baffle plate, a return spring, a scraper, and a semi-circular protrusion. The motor is fixedly connected to the top outer wall of the drying tank. The output end of the motor is fixedly connected to the drive shaft. The bushing is slidably connected to the outer wall of the drive shaft. The stirring rod is fixedly connected to the outer wall of the bushing. The baffle plate is fixedly connected to the outer wall of the bushing. The end of the drive shaft away from the motor is fixedly connected to the return spring. The other end of the return spring is fixedly connected to the inner wall of the bushing. The scraper is fixedly connected to the outer wall of the stirring rod. The semi-circular protrusion is fixedly connected to the bottom inner wall of the inner tank.

[0007] Preferably, the intermittent injection device includes a wedge block, a second return spring, a wedge block enclosure, an anti-agglomeration agent box, and a box cover.

[0008] Preferably, the inclined block is attached to the opening on the outer wall of the drying tank, and a second reset spring is fixedly connected to the top outer wall of the inclined block.

[0009] Preferably, the end of the second reset spring away from the inclined block is fixedly connected to the inclined block packaging box.

[0010] Preferably, an anti-agglomeration agent box is fixedly connected to the outer wall of the drying tank.

[0011] Preferably, the top of the anti-agglomeration agent box has an injection port, which is rotatably connected to a box cover.

[0012] Compared with the prior art, this utility model provides a dryer for the preparation of nano-calcium carbonate, which has the following beneficial effects:

[0013] This dryer for preparing nano-calcium carbonate incorporates a stirring and vibration device. By starting a motor, the drive shaft and bushing rotate, causing the stirring rod to agitate the material. Simultaneously, a scraper rotates along the inner wall of the inner tube, scraping off the calcium carbonate adhering to the inner wall. During rotation, the scraper presses against a semi-circular protrusion, causing the bushing to compress a return spring. This causes the bushing to lift the baffle plate. The scraper returns to its original position after passing the semi-circular protrusion. Multiple sets of these protrusions create a reciprocating vibration motion, resulting in more uniform stirring and improved drying efficiency.

[0014] 2. This dryer for preparing nano-calcium carbonate is equipped with an intermittent injection device. The scraper vibrates and moves up and down, squeezing the inclined block. The inclined block is squeezed by the scraper and moves towards the return spring, compressing the spring. When the inclined block is not squeezed and rises, the inclined block packaging box is in a sealed state. When the inclined block is squeezed and rises, the inclined block packaging box is unsealed, so that the anti-agglomeration agent in the anti-agglomeration agent box enters the inner tank. Because the inclined block is intermittently squeezed by the scraper, the intermittent injection of anti-agglomeration agent is completed. Intermittent addition can reduce the amount of anti-agglomeration agent used, reduce costs, and avoid excessive addition due to continuous addition, which would have an adverse effect on calcium carbonate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a front sectional view of the present invention;

[0017] Figure 3 This is a side sectional view of the present invention;

[0018] Figure 4 This utility model Figure 3 A magnified structural diagram at point A.

[0019] In the diagram: 1. Drying tank; 2. Inner tank; 3. Feed inlet; 4. Stirring and vibrating device; 41. Motor; 42. Drive shaft; 43. Bushing; 44. Stirring rod; 45. Baffle plate; 46. Return spring one; 47. Scraper; 48. Semi-circular protrusion; 5. Intermittent injection device; 51. Inclined block; 52. Return spring two; 53. Inclined block enclosure box; 54. Anti-agglomeration agent box; 55. Box cover; 6. Heating coil. Detailed Implementation

[0020] like Figures 1-4 As shown, this utility model provides a technical solution: a dryer for the preparation of nano-calcium carbonate, including a drying tank 1, a feed inlet 3 at the top of the drying tank 1, a stirring and vibration device 4 fixedly connected to the outer wall of the top of the drying tank 1, an inner tank 2 fixedly connected to the outer wall of the stirring and vibration device 4, and a heating coil 6 fixedly connected to the outer wall of the inner tank 2. The stirring and vibration device 4 includes a motor 41, a drive shaft 42, a bushing 43, a stirring rod 44, a baffle 45, a return spring 46, a scraper 47, and a semi-circular protrusion 48. The motor 41 is fixedly connected to the outer wall of the inner tank 2. A drive shaft 42 is fixed to the output end of the motor 41 connected to the top outer wall of the drying tank 1. A bushing 43 is slidably connected to the outer wall of the drive shaft 42. A stirring rod 44 is fixedly connected to the outer wall of the bushing 43. A baffle 45 is fixedly connected to the outer wall of the bushing 43. A return spring 46 is fixedly connected to the end of the drive shaft 42 away from the motor 41. The other end of the return spring 46 is fixedly connected to the inner wall of the bushing 43. A scraper 47 is fixedly connected to the outer wall of the stirring rod 44. A semi-circular protrusion 48 is fixedly connected to the bottom inner wall of the inner tank 2.

[0021] In this example, calcium carbonate is injected into the inner tank 2 through the feed inlet 3. A heating coil 6 is installed between the drying tank 1 and the inner tank 2. The drying of calcium carbonate is completed by heating the inner tank 2. The motor 41 is started, which drives the drive shaft 42 to rotate. The drive shaft 42 drives the bushing 43 to rotate. When the bushing 43 rotates, the stirring rod 44 and the baffle 45 fixed on its outer wall rotate together. The outer wall of the stirring rod 44 is fixed with a scraper 47, so that the scraper 47 also rotates along the inner wall of the inner tank 2, removing the calcium carbonate adhering to the inner wall. As the calcium carbonate is scraped off, the rotating scraper 47 will press against the semi-circular protrusion 48 at the bottom of the inner tank 2, thereby driving the bushing 43 to press the return spring 46, causing the bushing 43 to move upward. When the scraper 47 leaves the semi-circular protrusion 48, the bushing 43 returns to its original position. There are multiple sets of semi-circular protrusions 48 at the bottom of the inner tank 2, which are circumferentially distributed. Therefore, when the scraper 47 rotates, it will press the semi-circular protrusions 48 multiple times, thus forming an up-and-down reciprocating motion, thereby driving the bushing 43 to complete the vibration, making the mixing more uniform and improving the drying efficiency.

[0022] like Figures 1-4As shown, in order to design a dryer for the preparation of nano-calcium carbonate, the top of the drying tank 1 in this example has a sliding hole, and an intermittent injection device 5 is slidably connected to the hole. The intermittent injection device 5 includes a wedge 51, a second return spring 52, a wedge wrapping box 53, an anti-agglomeration agent box 54, and a box cover 55. The wedge 51 is attached to the opening on the outer wall of the drying tank 1. The second return spring 52 is fixedly connected to the top outer wall of the wedge 51. The wedge wrapping box 53 is fixedly connected to the end of the second return spring 52 away from the wedge 51. The anti-agglomeration agent box 54 is fixedly connected to the outer wall of the drying tank 1. The top of the anti-agglomeration agent box 54 has an injection port, and the injection port is rotatably connected to the box cover 55.

[0023] In this example, when the scraper 47 moves up and down, it will press against the inclined block 51. The inclined block 51 is pressed and moves towards the return spring 52. Since the inclined block packaging box 53 is in a sealed state when the inclined block 51 is not pressed, the sealing state of the inclined block packaging box 53 is released when the inclined block 51 moves upward, and the position of the inclined block 51 is connected to the inner tank 2. At this time, the anti-agglomeration agent in the anti-agglomeration agent box 54 will flow into the inner tank 2 along this passage. When the scraper 47 does not press the inclined block 51, the return spring 52 drives the inclined block 51 to return to its original position. At this time, the passage is closed, and the anti-agglomeration agent cannot enter the inner tank 2, thus completing the intermittent injection of anti-agglomeration agent. Intermittent addition can reduce the amount of anti-agglomeration agent used, reduce costs, and avoid excessive addition due to continuous addition, which would have an adverse effect on calcium carbonate. When it is necessary to replenish the anti-agglomeration agent, it can be injected by unscrewing the box cover 55.

[0024] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A drying machine for nano calcium carbonate preparation, comprising a drying tank (1), characterized in that: The top of the drying tank (1) is provided with a feed inlet (3), the outer wall of the top of the drying tank (1) is fixedly connected with a stirring and vibration device (4), the top of the drying tank (1) is provided with a sliding hole, and an intermittent injection device (5) is slidably connected at the opening, the outer wall of the stirring and vibration device (4) is fixedly connected with an inner tank (2), and the outer wall of the inner tank (2) is fixedly connected with a heating coil (6). The stirring and vibrating device (4) includes a motor (41), a drive shaft (42), a bushing (43), a stirring rod (44), a baffle plate (45), a return spring (46), a scraper (47), and a semi-circular protrusion (48). The motor (41) is fixedly connected to the top outer wall of the drying tank (1). The output end of the motor (41) is fixedly connected to the drive shaft (42). The outer wall of the drive shaft (42) is slidably connected to the bushing (43). The outer wall of the bushing (43) is fixedly connected to the stirring rod (44). The outer wall of the bushing (43) is fixedly connected to the baffle plate (45). The end of the drive shaft (42) away from the motor (41) is fixedly connected to the return spring (46). The other end of the return spring (46) is fixedly connected to the inner wall of the bushing (43). The outer wall of the stirring rod (44) is fixedly connected to the scraper (47). The bottom inner wall of the inner tank (2) is fixedly connected to the semi-circular protrusion (48).

2. The drying machine for nano calcium carbonate preparation according to claim 1, characterized in that: The intermittent injection device (5) includes a wedge (51), a second reset spring (52), a wedge package box (53), an anti-agglomeration agent box (54), and a box cover (55).

3. The drying machine for nano calcium carbonate preparation according to claim 2, characterized in that: The inclined block (51) is attached to the opening on the outer wall of the drying tank (1), and the top outer wall of the inclined block (51) is fixedly connected to the second reset spring (52).

4. A dryer for the preparation of nano-calcium carbonate according to claim 2, characterized in that: The end of the second reset spring (52) away from the inclined block (51) is fixedly connected to the inclined block package box (53).

5. A dryer for the preparation of nano-calcium carbonate according to claim 1, characterized in that: An anti-agglomeration agent box (54) is fixedly connected to the outer wall of the drying tank (1).

6. A dryer for the preparation of nano-calcium carbonate according to claim 5, characterized in that: The top of the anti-agglomeration agent box (54) is provided with an injection port, and the injection port is rotatably connected to a box cover (55).

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