A vacuum drying and mixing device for flame-retardant particles

Abstract

This utility model discloses a vacuum drying and mixing device for flame-retardant particles, including an outer tank, an inner tank inside the outer tank, and two fixing rings fixed between the inner and outer tanks. Multiple perforations are formed at the top of the upper fixing ring. A suction pipe is fixed to the left side of the inner tank, an inlet pipe is fixed to the right side of the inner tank, and an outlet pipe is fixed to the outer wall of the outer tank. When the fixing pipe and suction pipe are connected via a rotary joint, an I-shaped rod is inserted into the fixing pipe, and a limiting block is inserted into the limiting strip to limit the fixing pipe and prevent rotation of the circular tube. This ensures the circular tube is positioned at the top, so that when the outer tank rotates with the inner tank, the top of the circular tube is positioned above the raw material in the inner tank, preventing the raw material from blocking the circular tube. Furthermore, when the raw material passes through the stirring rod, the stirring rod disrupts the material, resulting in more thorough mixing.

Description

Technical Field

[0001] This utility model relates to the technical field of vacuum drying and mixing devices, specifically a vacuum drying and mixing device for flame-retardant particles. Background Technology

[0002] Vacuum drying of flame-retardant particles usually requires mixing, and existing flame-retardant particle vacuum drying processes typically use a double-cone rotary vacuum dryer for mixing.

[0003] The double cone rotary vacuum dryer is a special type of dryer. Its characteristic is that the container for placing raw materials is cone-shaped at both ends, and the container is rotating during the heating and drying process. This causes the raw materials inside the container to turn over. During the drying process, the moisture in the raw materials is heated and continuously vaporized. Therefore, it is necessary to continuously discharge the gas inside the container to maintain the vacuum state inside the container.

[0004] However, during the exhaust process, when the raw material rotates, it comes into contact with the exhaust pipe, which may cause the raw material to block the exhaust pipe and affect the discharge of gas. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a vacuum drying and mixing device for flame-retardant particles, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a vacuum drying and mixing device for flame-retardant particles, comprising an outer tank, an inner tank inside the outer tank and a partition tank inside the partition tank, two fixing rings fixed between the partition tank and the inner tank, multiple perforations on the top of the upper fixing ring, an exhaust pipe fixed to the left side inside the inner tank, an inlet pipe fixed to the right side inside the partition tank, and an outlet pipe fixed to the outer wall of the outer tank; The inner tank is equipped with a fixed tube inside. A round tube is fixed to the outer wall of the fixed tube. Multiple stirring rods are fixed to the outer wall of the fixed tube. The left end of the fixed tube is fixedly connected to the air extraction pipe through a rotary joint. A rotating pipe is rotatably connected to the outer wall of the air extraction pipe. The rotating pipe is fixedly connected to the outer tank. A support plate is rotatably connected to the outer wall of the rotating pipe and the outer wall of the outlet pipe. A base plate is fixed to the bottom of the support plate. A vacuum pump connecting pipe is fixed to the left side of the suction pipe via a rotary joint. An I-shaped rod is fixed inside the vacuum pump connecting pipe. Limit blocks are fixed to the top and bottom of the right side of the I-shaped rod. Limit strips are fixed to the inner side wall of the fixing pipe in front of and behind the limit blocks.

[0007] Preferably, a cylinder is fixed to the top of the cylindrical tube, the top of the cylinder has multiple air ports, a cylindrical shell is fixed to the top of the cylinder, and a filter screen is fixed between the cylindrical shell and the cylinder.

[0008] Preferably, a motor is provided above the base plate, and a synchronous pulley is fixed to the outer wall of the output shaft and the rotating tube of the motor, and a synchronous belt is sleeved on the outer side of the synchronous pulley.

[0009] Preferably, an outer tube and an input tube are fixed to the right side of the outlet tube and the right end of the inlet tube via a rotary joint, an output tube is fixed to the outer side wall of the outer tube, and the input tube is fixed inside the outer tube.

[0010] Preferably, the right end of the fixed tube is fixed with a connecting block via a rotary joint, and the connecting block is fixedly connected to the inner tank.

[0011] Preferably, a pad is fixed to the top of the base plate, and the bottom of the motor is fixedly connected to the pad.

[0012] Preferably, the top and bottom of the outer can are fitted with sealing caps.

[0013] Beneficial effects This invention provides a vacuum drying and mixing device for flame-retardant particles. Compared with the prior art, it has the following advantages: This vacuum drying and mixing device for flame-retardant particles, by setting up an extraction pipe, a fixed pipe, a stirring rod, an I-shaped rod, a limiting block, a vacuum pump connecting pipe, a round pipe, and a limiting strip, connects the fixed pipe and the extraction pipe through a rotary joint. When the fixed pipe and the extraction pipe are connected, the I-shaped rod is inserted into the fixed pipe, and the limiting block is inserted into the limiting strip to limit the fixed pipe and prevent the fixed pipe and the round pipe from rotating, so that the round pipe is positioned on top. In this way, when the outer tank rotates with the inner tank, the top of the round pipe is positioned above the raw material in the inner tank, preventing the raw material from blocking the round pipe and causing blockage. Moreover, when the raw material passes through the stirring rod, the stirring rod disturbs the raw material, making the raw material more thoroughly mixed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the outer tank, the partition tank, and the inner tank in this utility model; Figure 3 This is a cross-sectional view of the extraction pipe, the fixed pipe, and the vacuum pump connecting pipe in this utility model.

[0015] In the diagram: 1. Vacuum pump connecting pipe; 2. Synchronous pulley; 3. Synchronous belt; 4. Motor; 5. Connecting block; 6. Support plate; 7. Input pipe; 8. Output pipe; 9. Outer pipe; 10. Rotary joint; 11. Base plate; 12. Outlet pipe; 13. Outer tank; 14. Sealing cap; 15. Evacuation pipe; 16. Rotary pipe; 17. Stirring rod; 18. Fixing pipe; 19. Connecting block; 20. Round pipe; 21. Round shell; 22. I-shaped rod; 23. Limiting strip; 24. Perforation; 25. Fixing ring; 26. Limiting block; 27. Air port; 28. Cylinder; 29. ​​Filter screen; 30. Partitioned tank; 31. Inner tank; 32. Inlet pipe. Detailed Implementation

[0016] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1 to 3 This utility model provides a technical solution: a vacuum drying and mixing device for flame-retardant particles, including an outer tank 13, an inner tank 31 inside the outer tank 13 with a partition tank 30 inside the partition tank 30, two fixing rings 25 fixed between the partition tank 30 and the inner tank 31, and multiple perforations 24 on the top of the upper fixing ring 25. A suction pipe 15 is fixed to the left side inside the inner tank 31, an inlet pipe 32 is fixed to the right side inside the partition tank 30, an outlet pipe 12 is fixed to the outer wall of the outer tank 13, the inlet pipe 32 is located inside the outlet pipe 12, a fixing pipe 18 is provided inside the inner tank 31, a round pipe 20 is fixed to the outer wall of the fixing pipe 18, and multiple stirring rods 17 are fixed to the outer wall of the fixing pipe 18. The left end of the fixed pipe 18 is fixedly connected to the suction pipe 15 via a rotary joint 10. The outer wall of the suction pipe 15 is rotatably connected to a rotating pipe 16, which is fixedly connected to the outer tank 13. The outer wall of the rotating pipe 16 and the outer wall of the outlet pipe 12 are rotatably connected to a support plate 6. The bottom of the support plate 6 is fixed with a base plate 11. The left side of the suction pipe 15 is fixed with a vacuum pump connecting pipe 1 via a rotary joint 10. An I-shaped rod 22 is fixed inside the vacuum pump connecting pipe 1. Limiting blocks 26 are fixed at the top and bottom of the right side of the I-shaped rod 22. Limiting strips 23 are fixed on the inner wall of the fixed pipe 18 in front of and behind the limiting blocks 26. This allows the air inlet of the outlet pipe to be located above the raw material, preventing the outlet pipe from being blocked.

[0018] Furthermore, a cylinder 28 is fixed to the top of the circular tube 20. Multiple air ports 27 are opened at the top of the cylinder 28. A circular shell 21 is fixed to the top of the cylinder 28, and a filter screen 29 is fixed between the circular shell 21 and the cylinder 28. This blocks the top of the circular tube 20, preventing raw materials from entering its interior. A motor 4 is located above the base plate 11. A synchronous pulley 2 is fixed to the output shaft of the motor 4 and the outer wall of the rotating tube 16. A synchronous belt 3 is fitted around the outer side of the synchronous pulley 2, allowing the rotating tube 16, outer tank 13, partition tank 30, and inner tank 31 to rotate. The right side of the outlet pipe 12 and the inlet pipe 32... The right end is fixed with an outer pipe 9 and an input pipe 7 via a rotary joint 10. An output pipe 8 is fixed to the outer wall of the outer pipe 9, and the input pipe 7 is fixed inside the outer pipe 9. This allows for the connection of external heat medium input and output devices. The right end of the fixed pipe 18 is fixed with a connecting block 19 via a rotary joint 10. The connecting block 19 is fixedly connected to the inner tank 31, which enhances the stability of the fixed pipe 18. A pad 5 is fixed to the top of the bottom plate 11, and the bottom of the motor 4 is fixedly connected to the pad 5, which raises the height of the motor 4. Sealing caps 14 are installed on the top and bottom of the outer tank 13 to prevent raw materials from flowing out.

[0019] During operation, raw materials are placed inside the inner tank 31. The inlet pipe 7 is connected to a heat transfer medium input device, and the outlet pipe 8 is connected to a heat transfer medium recovery device. The vacuum pump connection pipe 1 is connected to the vacuum pump. The vacuum pump is started, and the gas inside the inner tank 31 enters through the circular pipe 20, then passes through the fixed pipe 18, the extraction pipe 15, and the vacuum pump connection pipe 1, before being discharged from the inner tank 31, maintaining a vacuum in the inner tank 31. The heat transfer medium enters through the inlet pipe 32 via the inlet pipe 7 and then flows between the partition tank 30 and the inner tank 31, heating the inside of the inner tank 31. The heat transfer medium then flows through the perforation 24 to the space between the partition tank 30 and the outer tank 13, and then flows to the outlet pipe 12 and the outer pipe 9. Finally... The heat medium flows into the heat recovery equipment from the output pipe 8. The motor 4 is started. The motor 4 rotates the rotating pipe 16 through the synchronous pulley 2 and the synchronous belt 3. The rotating pipe 16 rotates the outer tank 13, the partition tank 30 and the inner tank 31, so that the raw materials move and mix. At the same time, the I-shaped rod 22 and the limiting block 26 restrict the rotation of the limiting strip 23, the fixed pipe 18 and the round pipe 20, so that the round pipe 20 is positioned at the top. In this way, when the outer tank 13 rotates with the inner tank 31, the top of the round pipe 20 is always above the raw materials inside the inner tank 31, preventing the raw materials from contacting the round pipe 20 and causing blockage. When the raw materials pass through the stirring rod 17, the stirring rod 17 disturbs the raw materials, so that the raw materials are mixed more thoroughly.

[0020] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum drying and mixing apparatus for flame-retardant particles, comprising an outer tank (13), characterized in that: The outer tank (13) has a partition tank (30) inside, and the partition tank (30) has an inner tank (31) inside. Two fixing rings (25) are fixed between the partition tank (30) and the inner tank (31). Multiple perforations (24) are opened on the top of the upper fixing ring (25). An air extraction pipe (15) is fixed on the left side inside the inner tank (31). An inlet pipe (32) is fixed on the right side inside the partition tank (30). An outlet pipe (12) is fixed on the outer wall of the outer tank (13). The inner tank (31) is provided with a fixed tube (18), and a round tube (20) is fixed on the outer wall of the fixed tube (18). Multiple stirring rods (17) are fixed on the outer wall of the fixed tube (18). The left end of the fixed tube (18) is fixedly connected to the air extraction pipe (15) through a rotary joint (10). A rotating pipe (16) is rotatably connected to the outer wall of the air extraction pipe (15). The rotating pipe (16) is fixedly connected to the outer tank (13). A support plate (6) is rotatably connected to the outer wall of the rotating pipe (16) and the outer wall of the outlet pipe (12). The bottom of the support plate (6) is fixed with a base plate (11). The left side of the suction pipe (15) is fixed with a vacuum pump connecting pipe (1) through a rotary joint (10). The inside of the vacuum pump connecting pipe (1) is fixed with an I-shaped rod (22). The top and bottom right sides of the I-shaped rod (22) are fixed with limit blocks (26). The inner sidewall of the fixed pipe (18) is fixed with limit strips (23) in front of and behind the limit blocks (26).

2. The vacuum drying and mixing apparatus for flame-retardant particles according to claim 1, characterized in that: The top of the tube (20) is fixed with a cylinder (28), the top of the cylinder (28) is provided with multiple air ports (27), the top of the cylinder (28) is fixed with a shell (21), and a filter screen (29) is fixed between the shell (21) and the cylinder (28).

3. The vacuum drying and mixing apparatus for flame-retardant particles according to claim 1, characterized in that: A motor (4) is provided above the base plate (11). A synchronous pulley (2) is fixed to the output shaft of the motor (4) and the outer wall of the rotating tube (16). A synchronous belt (3) is sleeved on the outer side of the synchronous pulley (2).

4. The vacuum drying and mixing apparatus for flame-retardant particles according to claim 1, characterized in that: The right side of the outlet pipe (12) and the right end of the inlet pipe (32) are fixed with an outer pipe (9) and an input pipe (7) by a rotary joint (10). An output pipe (8) is fixed on the outer side wall of the outer pipe (9), and the input pipe (7) is fixed inside the outer pipe (9).

5. The vacuum drying and mixing apparatus for flame-retardant particles according to claim 1, characterized in that: The right end of the fixed tube (18) is fixed with a connecting block (19) via a rotary joint (10), and the connecting block (19) is fixedly connected to the inner tank (31).

6. The vacuum drying and mixing apparatus for flame-retardant particles according to claim 3, characterized in that: A pad (5) is fixed to the top of the base plate (11), and the bottom of the motor (4) is fixedly connected to the pad (5).

7. The vacuum drying and mixing apparatus for flame-retardant particles according to claim 1, characterized in that: The outer can (13) is equipped with sealing caps (14) at both the top and bottom.

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