A drying device for copper pyrithione

Abstract

The utility model discloses a kind of for pyrithione copper drying device, belong to pyrithione copper production technical field, including drying chamber, drying chamber outer wall is equipped with heating jacket, vertical rotating shaft is equipped in drying chamber, first annular plate, second annular plate are sequentially equipped from top to bottom in drying chamber, first annular plate outer edge is connected with drying chamber inner wall, central discharge port is left between first annular plate and rotating shaft, second annular plate inner edge is rotatably connected with rotating shaft, side discharge port is left between second annular plate and drying chamber inner wall;First annular plate top and second annular plate top are each equipped with a plurality of harrow arm, harrow arm one end is fixedly connected with rotating shaft, a plurality of harrow teeth are equipped at harrow arm bottom, a plurality of stirring rods are also equipped on rotating shaft, stirring rod is located below second annular plate.The utility model material is preheated on annular plate, harrow tooth makes it overturn, material is uniformly preheated;Stirring rod stirs the material at the bottom of drying chamber, sufficiently dries it, reduces drying time.

Description

Technical Field

[0001] This utility model relates to the field of pyridinethione copper production technology, specifically to a drying device for pyridinethione copper. Background Technology

[0002] Copper pyrithione (CPT), chemically known as 2-mercaptopyridine-N-copper oxide salt, is widely used in marine antifouling paints due to its advantages such as low toxicity, low solubility in water, good chemical stability, broad-spectrum antibacterial and antifungal properties. It prevents corrosion of the ship hull by crustaceans, algae, and other aquatic organisms. Currently, industrially, it is typically produced by reacting 2-chloropyridine and hydrogen peroxide to generate sodium pyrithione, which is then reacted with copper sulfate to form copper pyrithione.

[0003] In the production of copper pyrithione, it needs to be dried to remove moisture before being sent to the grinding process for grinding and packaging. During the drying process, because the material accumulates together in the drying chamber, uneven drying can easily occur, with the surface of the material already dried while the inside remains damp, leading to prolonged drying time; the heat inside the device cannot fully contact the material, resulting in heat waste.

[0004] In view of the problems existing in the prior art, this utility model combines years of design and use experience in related fields to design and manufacture a drying device for copper pyridinethione to overcome the above defects. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model provides a drying device for copper pyridinethione, which turns the copper pyridinethione material to avoid uneven drying, allows heat to fully contact the copper pyridinethione, and reduces drying time.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A drying device for copper pyridinethione includes a drying chamber, a heating jacket provided on the outer wall of the drying chamber, a feed inlet provided on the top of the drying chamber, a rotating shaft vertically provided inside the drying chamber, the top end of the rotating shaft extending out of the top of the drying chamber and connected to a driving component that drives its rotation, a first annular plate and a second annular plate sequentially provided from top to bottom inside the drying chamber, the outer edge of the first annular plate being connected to the inner wall of the drying chamber, a central feed inlet provided between the first annular plate and the rotating shaft, the inner edge of the second annular plate being rotatably connected to the outer surface of the rotating shaft, and a side feed inlet provided between the second annular plate and the inner wall of the drying chamber;

[0007] Several rake arms are provided above the first and second annular plates. One end of each rake arm is fixedly connected to the rotating shaft. Several rake teeth are provided at the bottom of each rake arm. The bottom end of each rake tooth contacts the upper surface of the first or second annular plate. Several stirring rods are also provided on the rotating shaft. The stirring rods are located below the second annular plate. A discharge port is provided at the bottom of the drying chamber.

[0008] Preferably, the inner edge of the first annular plate slopes downward, and the outer edge of the second annular plate slopes downward.

[0009] Preferably, the stirring rod located at the bottom is in contact with the bottom wall of the drying chamber.

[0010] Preferably, the driving component includes a driven bevel gear, which is mounted on the rotating shaft. The driven bevel gear meshes with a driving bevel gear, and the driving bevel gear is connected to a motor via a connecting shaft.

[0011] Preferably, the rotating shaft has a first hollow section, the top of the first hollow section extends upward and is flush with the top of the rotating shaft, and the top of the rotating shaft is connected to a first hot air pipe; the rake arm and rake teeth are both hollow structures, the rake teeth, rake arm and first hollow section are connected in sequence, the rake teeth are provided with a plurality of first air outlets, and the first air outlets are provided with a first breathable membrane;

[0012] The upper side wall of the drying chamber is provided with an exhaust hole, and a first filter screen is provided on the exhaust hole.

[0013] Preferably, the bottom end of the rotating shaft extends downwards out of the bottom of the drying chamber;

[0014] The rotating shaft has a second hollow section, the first hollow section and the second hollow section are not connected, the bottom end of the second hollow section extends downward and is flush with the bottom end of the rotating shaft, and the bottom end of the rotating shaft is connected to a second hot air pipe;

[0015] The stirring rod has a hollow structure and is connected to the second hollow section. The stirring rod is provided with a plurality of second air outlets, which are connected to the stirring rod. The second air outlets are provided with a second breathable membrane.

[0016] Preferably, both the first hot air pipe and the second hot air pipe are connected to a hot air main pipe.

[0017] Preferably, the first hot air pipe and the second hot air pipe are connected to the hot air main pipe through a three-way valve.

[0018] Preferably, the top end of the rotating shaft is connected to the first hot air pipe via a first rotary joint, and the bottom end of the rotating shaft is connected to the second hot air pipe via a second rotary joint.

[0019] The advantages of this utility model are:

[0020] 1. In this invention, the material is preheated on the first and second annular plates, and the rake teeth turn the material on the annular plates to make the material preheat evenly; the stirring rod stirs the material at the bottom of the drying chamber to dry it thoroughly. Together, the two processes ensure that the material is heated evenly during the drying process and reduce the drying time.

[0021] 2. This utility model features a heating jacket outside the drying chamber for drying materials. A first hollow section is provided on the rotating shaft, through which hot air enters the shaft, passes through the rake arms and rake teeth, and exits through the first air outlet, directly contacting the materials to aid preheating. A second hollow section is also provided on the rotating shaft, through which hot air enters the shaft, passes through the stirring rod, and exits through the second air outlet, directly contacting the materials to aid drying. Both sections work together to improve the drying effect. The first and second hollow sections are not connected; heat is selectively supplied to either section based on the material's flow position, avoiding heat waste. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a drying apparatus for copper pyrithione.

[0023] In the diagram: 1-Drying chamber, 2-Feed inlet, 3-Rotating shaft, 4-Driven bevel gear, 5-Driving bevel gear, 6-Motor, 7-Rake arm, 8-Rake teeth, 9-First annular plate, 10-Second annular plate, 11-Stirring rod, 12-Central discharge port, 13-Side discharge port, 14-Discharge port, 15-First hollow section, 16-Second hollow section, 17-First air outlet, 18-Second air outlet, 19-First filter screen, 20-First hot air pipe, 21-First rotary joint, 22-Second hot air pipe, 23-Second rotary joint, 24-Hot air main pipe, 25-Three-way valve, 26-Connecting shaft, 27-Heating jacket. Detailed Implementation

[0024] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, a drying apparatus for copper pyrithione includes a drying chamber 1. A heating jacket 27 is provided on the outer wall of the drying chamber 1. A heat medium inlet is located at the lower end of the heating jacket 27, and a heat medium outlet is located at the upper end of the heating jacket 27. A feed inlet 2 is located at the top of the drying chamber 1. A rotating shaft 3 is vertically mounted inside the drying chamber 1, with its top end extending beyond the top of the drying chamber 1 and connected to a driving component for rotating it. Specifically, the driving component includes a driven bevel gear 4, which is mounted on the rotating shaft 3. The driven bevel gear 4 meshes with a driving bevel gear 5, and the driving bevel gear 5 is connected to a motor 6 via a connecting shaft 26.

[0026] Inside the drying chamber 1, a first annular plate 9 and a second annular plate 10 are arranged sequentially from top to bottom. The outer edge of the first annular plate 9 is connected to the inner wall of the drying chamber 1, and a central discharge port 12 is provided between the first annular plate 9 and the rotating shaft 3. The inner edge of the second annular plate 10 is rotatably connected to the outer surface of the rotating shaft 3, and a side discharge port 13 is provided between the second annular plate 10 and the inner wall of the drying chamber 1. Several rake arms 7 are provided above the first annular plate 9 and the second annular plate 10, and one end of the rake arm 7 is fixedly connected to the rotating shaft 3. Several rake teeth 8 are provided at the bottom of the rake arm 7, and the bottom end of the rake teeth 8 contacts the upper surface of the first annular plate 9 or the upper surface of the second annular plate 10. The rake teeth 8 can push the material to turn over on the first annular plate 9 and the second annular plate 10. The material falls sequentially from the central discharge port 12 and the side discharge port 13 to the bottom of the drying chamber 1. During this process, the position of the material changes continuously, causing the material inside to turn over to the surface of the first annular plate 9 or the second annular plate 10, so that the material can be fully and evenly preheated. Several stirring rods 11 are also provided on the rotating shaft 3. The stirring rods 11 are located below the second annular plate 10, and the bottom of the drying chamber 1 is provided with a discharge port 14. Under the action of the stirring rods 11, the material is fully dried at the bottom of the drying chamber 1, and the two together prevent the material from drying on the surface while remaining moist inside.

[0027] When the rake teeth 8 push the material, some material may remain on the first annular plate 9 and the second annular plate 10. In this invention, the inner edge of the first annular plate 9 is inclined downwards, and the outer edge of the second annular plate 10 is inclined downwards. After preheating, the moisture content of the material decreases, so under the action of gravity, the material can leave the first annular plate 9 or the second annular plate 10, reducing material residue. The stirring rod 11 at the bottom contacts the bottom wall of the drying chamber 1, stirring the material at the bottom and uniformly agitating it, thus improving the uniformity of drying.

[0028] The rotating shaft 3 has a first hollow section 15, the top of which extends upward and is flush with the top of the rotating shaft 3. A first hot air pipe 20 is connected to the top of the rotating shaft 3. Specifically, the top of the rotating shaft 3 is connected to the first hot air pipe 20 via a first rotary joint 21. The rake arm 7 and rake teeth 8 are both hollow structures. The rake teeth 8, rake arm 7, and first hollow section 15 are connected sequentially. Several first air outlets are provided on the rake teeth 8, and a first permeable membrane is provided on each first air outlet 17. An exhaust port is provided on the upper side wall of the drying chamber 1, and a first filter screen 19 is provided on each exhaust port. Hot air escapes from the first exhaust port 17 and diffuses within the gaps between the materials. During diffusion, it directly contacts and dries the materials on the first annular plate 9 and the second annular plate 10, improving the preheating effect of the materials. Moist air is discharged through the exhaust port.

[0029] The bottom end of the rotating shaft 3 extends downwards from the bottom of the drying chamber 1, and the rotating shaft 3 has a second hollow section 16. The first hollow section 15 is not connected to the second hollow section 16. The bottom end of the second hollow section 16 extends downwards and is flush with the bottom end of the rotating shaft 3. The bottom end of the rotating shaft 3 is connected to a second hot air pipe 22. Specifically, the bottom end of the rotating shaft 3 is connected to the second hot air pipe 22 through a second rotary joint 23. The stirring rod 11 has a hollow structure and is connected to the second hollow section 16. The stirring rod 11 is provided with several second air outlets 18, which are connected to the stirring rod 11. The second air outlets 18 are provided with a second breathable membrane. After preheating, hot air escapes from the second air outlets 18 and dries the material at the bottom of the drying chamber 1. The hot air diffuses in the gaps between the materials and comes into direct contact with the materials, improving the drying effect. The bottom of the first hollow section 15 and the top of the second hollow section 16 are not connected. Heat is selectively introduced into either the first hollow section 15 or the second hollow section 16 according to the material flow position to avoid heat waste. This utility model uses a hot air-assisted heating jacket to heat the material, with internal and external heating working together to improve the drying effect. When the humid air is discharged, some fine, powdery material inevitably moves upward. The staggered central discharge port 12 and side discharge ports 13 guide the airflow to bend and turn upward, which is conducive to the separation of material from humid air. The material falls back down, and the first filter screen 19 can prevent the material from leaving the drying chamber 1, thereby avoiding material waste.

[0030] Specifically, both the first hot air pipe 20 and the second hot air pipe 22 are connected to a main hot air pipe 24. The first hot air pipe 20 and the second hot air pipe 22 are connected to the main hot air pipe 24 through a three-way valve 25, which controls the flow of hot air into the first hollow section 15 or the second hollow section 16. The main hot air pipe 24 is connected to a device that provides a heat source. The device that provides the heat source is conventional equipment in the art and will not be described in detail here.

[0031] Detailed operation process

[0032] A heat medium is introduced into the heating jacket 27, and then the connection between the hot gas main pipe 24 and the first hot gas pipe 20 on the three-way valve 25 is opened. Hot gas is supplied to the hot gas main pipe 24 through the heat source device. The hot gas enters the first hot gas pipe 20, the first hollow section 15, and the rake arm 7 sequentially from the hot gas main pipe 24, and escapes from the first air outlet 17 on the rake teeth 8. At the same time, the motor 6 is started. The output end of the motor 6 drives the connecting shaft 26 to rotate. The connecting shaft 26 drives the driving bevel gear 5 to rotate. The driving bevel gear 5 drives the meshing driven bevel gear 4 to rotate. The driven bevel gear 4 drives the rotating shaft 3 to rotate. The rotating shaft 3 drives the rake arm 7 and the stirring rod 11 to rotate. The copper pyridine thioketone to be dried is added into the drying chamber 1 through the feed port 2. The copper pyridine thioketone falls onto the first annular plate 9. The hot gas escaping from the first air outlet 17 directly contacts the copper pyridine thioketone to pre-dry it. The humid air is discharged from the exhaust port. Under the action of the rake teeth 8, the material is turned over and moves from the edge of the first annular plate 9 to the middle of the first annular plate 9, and falls onto the second annular plate 10 through the central discharge port 12. Under the action of the rake teeth 8 above the second annular plate 10, the material continues to turn over and moves from the middle of the second annular plate 10 to the edge of the second annular plate 10, and falls into the bottom of the drying chamber 1 through the side discharge port 13.

[0033] Open the connection between the hot air main pipe 24 and the second hot air pipe 22 on the three-way valve 25. The hot air enters the second hot air pipe 22, the second hollow section 16 and the stirring rod 11 in sequence from the hot air main pipe 24. It escapes from the second air outlet 18 on the stirring rod 11. While the stirring rod 11 stirs the material, the hot air dries the material. After the material is dried, it is discharged from the discharge port 14 and enters the grinding process for grinding.

[0034] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A drying apparatus for copper pyrithione, characterized in that, The equipment includes a drying chamber (1), a feed inlet (2) at the top of the drying chamber (1), a heating jacket (27) on the outer wall of the drying chamber (1), a rotating shaft (3) vertically arranged inside the drying chamber (1), the top end of the rotating shaft (3) extending out of the top of the drying chamber (1) and connected to a driving component for driving its rotation, a first annular plate (9) and a second annular plate (10) arranged sequentially from top to bottom inside the drying chamber (1), the outer edge of the first annular plate (9) being connected to the inner wall of the drying chamber (1), a central feed inlet (12) being left between the first annular plate (9) and the rotating shaft (3), the inner edge of the second annular plate (10) being rotatably connected to the outer surface of the rotating shaft (3), and a side feed inlet (13) being left between the second annular plate (10) and the inner wall of the drying chamber (1). Several rake arms (7) are provided above the first annular plate (9) and the second annular plate (10). One end of the rake arm (7) is fixedly connected to the rotating shaft (3). Several rake teeth (8) are provided at the bottom of the rake arm (7). The bottom end of the rake teeth (8) contacts the upper surface of the first annular plate (9) or the upper surface of the second annular plate (10). Several stirring rods (11) are also provided on the rotating shaft (3). The stirring rods (11) are located below the second annular plate (10). The bottom of the drying chamber (1) is provided with a discharge port (14).

2. The drying apparatus for copper pyrithione according to claim 1, characterized in that, The inner edge of the first annular plate (9) is inclined downward, and the outer edge of the second annular plate (10) is inclined downward.

3. The drying apparatus for copper pyrithione according to claim 1, characterized in that, The stirring rod (11) located at the bottom is in contact with the bottom wall of the drying chamber (1).

4. The drying apparatus for copper pyrithione according to claim 1, characterized in that, The driving component includes a driven bevel gear (4), which is mounted on the rotating shaft (3). The driven bevel gear (4) meshes with a driving bevel gear (5), and the driving bevel gear (5) is connected to a motor (6) via a connecting shaft (26).

5. A drying apparatus for copper pyrithione according to claim 1, characterized in that, The rotating shaft (3) has a first hollow section (15), the top of the first hollow section (15) extends upward and is flush with the top of the rotating shaft (3), and the top of the rotating shaft (3) is connected to a first hot air pipe (20); the rake arm (7) and the rake teeth (8) are both hollow structures, the rake teeth (8), the rake arm (7) and the first hollow section (15) are connected in sequence, and the rake teeth (8) are provided with a plurality of first air outlets (17), and the first air outlets (17) are provided with a first breathable membrane; The upper side wall of the drying chamber (1) is provided with an exhaust hole, and a first filter screen (19) is provided on the exhaust hole.

6. A drying apparatus for copper pyrithione according to claim 5, characterized in that, The bottom end of the rotating shaft (3) extends downwards to the bottom of the drying chamber (1); The rotating shaft (3) has a second hollow section (16), the first hollow section (15) and the second hollow section (16) are not connected, the bottom end of the second hollow section (16) extends downward and is flush with the bottom end of the rotating shaft (3), and the bottom end of the rotating shaft (3) is connected to a second hot air pipe (22). The stirring rod (11) has a hollow structure and is connected to the second hollow section (16). The stirring rod (11) is provided with a plurality of second air outlets (18). The second air outlets (18) are connected to the stirring rod (11). The second air outlets (18) are provided with a second breathable membrane.

7. A drying apparatus for copper pyrithione according to claim 6, characterized in that, The first hot air pipe (20) and the second hot air pipe (22) are both connected to a hot air main pipe (24).

8. A drying apparatus for copper pyrithione according to claim 7, characterized in that, The first hot air pipe (20) and the second hot air pipe (22) are connected to the hot air main pipe (24) through a three-way valve (25).

9. A drying apparatus for copper pyrithione according to claim 6, characterized in that, The top end of the rotating shaft (3) is connected to the first hot air pipe (20) through the first rotary joint (21), and the bottom end of the rotating shaft (3) is connected to the second hot air pipe (22) through the second rotary joint (23).

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