Circulating mixing vacuum drying tank
By designing a stirring shaft and spiral stirring paddle extending to the discharge port in the drying tank, combining the circulating conveying pipe and the sprinkler part, the problem of uneven heating during plastic drying is solved, and the uniform heating and efficient drying of the materials are achieved, thereby improving the improvement of the materials. Drying efficiency and structural reliability.
Patent Information
- Application Number
- CN202420627690.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-28
AI Technical Summary
During the plastic drying process, the stirring shaft cannot touch the bottom of the drying tank, resulting in the part of the plastic raw material at the bottom of the drying tank being unable to be heated evenly, affecting the drying efficiency.
A vacuum drying tank of circulating mixture was designed, using a stirring shaft and a spiral stirring paddle to extend to the tank body discharge port, combining a circulation conveying pipe and a sprinkler to realize circulating heating and stirring of materials, ensuring that the materials are uniform under a vacuum environment. Heat and dry.
It realizes uniform heating and drying of various parts of the material, improves drying efficiency, simplifies the structure and production process, and reduces manufacturing costs.
Smart Images
Figure CN222143598U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drying equipment, in particular to a circulating mixing vacuum drying tank. Background Art
[0002] Nowadays, there are many drying devices for various industries on the market. In the drying process of plastics, drying devices with good drying effect and fast speed often play a great role.
[0003] When plastic raw materials are dried by microwave heating, a stirring function is added inside the drying tank to make the heating more uniform. However, since the stirring shaft cannot touch the bottom of the drying tank, a small part of the plastic raw materials will always be stored at the bottom of the drying tank and cannot move. This causes uneven heating of this part of the plastic raw materials, thus affecting the drying efficiency. Utility Model Content
[0004] The utility model aims to provide a circulating mixing vacuum drying tank, which is not only simple and reliable in structure, but also can make the materials in each part be heated more evenly and achieve better drying effect.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circulating mixing vacuum drying tank, comprising a tank body and a heating device arranged on the tank body, the tank body is also provided with a feeding port for material entry and a discharging port for material discharge, the feeding port and the discharging port are each provided with an opening and closing device, the tank body is provided with a material heating area and a material storage area which are interconnected, the heating device heats the material heating area, the tank body is also provided with a circulating feeding mechanism, the circulating feeding mechanism comprises a driving member, a stirring shaft and a spiral stirring paddle, the upper end of the tank body is provided with a bracket, the driving member is installed on the bracket, the stirring shaft is arranged in the tank body, and one end of the stirring shaft passes through the tank body and is linked to the output end of the driving member, the other end of the stirring shaft extends to the position of the discharging port of the tank body, the spiral stirring paddle is spirally arranged on the stirring shaft along the axial direction, and the bottom end of the spiral stirring paddle also extends to the position of the discharging port of the tank body.
[0006] By adopting the above technical solution, the tank body is in a vacuum environment, and the driving member drives the stirring shaft and the spiral stirring paddle to rotate. Since the stirring shaft and the spiral stirring paddle extend to the discharge port of the tank body, when working, the undried materials at the bottom of the material storage area can be continuously transported to the top of the material storage area for cyclic heating and drying, and the internal circulation and material stirring are carried out simultaneously. It is not only simple and reliable in structure, and has a lower manufacturing cost, but also can make the materials in each part be heated more evenly, and the drying effect is better.
[0007] The utility model is further configured that the circulating feeding mechanism also includes a circulating conveying pipe installed on the tank body, and the circulating conveying pipe is arranged on the outer periphery of the spiral stirring paddle, and the outer edge of the spiral stirring paddle is in contact with the circulating conveying pipe.
[0008] By adopting the above technical solution, the circulating conveying pipe plays a role of guiding the material. When the spiral stirring paddle rotates, the material is spirally conveyed from the bottom to the top, which can make the material heating more uniform.
[0009] The utility model is further configured such that the circulating conveying pipe passes through the top of the tank body and extends to the discharge port of the tank body, and at least one circulating inlet for connecting the material storage area with the circulating conveying pipe is opened on the side of the bottom end of the circulating conveying pipe, and at least one circulating outlet for connecting the material heating area with the circulating conveying pipe is opened at a position of the circulating conveying pipe corresponding to the material heating area.
[0010] By adopting the above technical solution, the structure of the circulation conveying pipe is simple and reliable, and the production is very convenient.
[0011] The utility model is further configured that a spreading piece is provided on the circulation conveying pipe at a position below the corresponding circulation outlet, and the spreading piece is in a conical shape that is small at the top and large at the bottom.
[0012] By adopting the above technical solution, after the material falls from the upper part of the tank body, it can be evenly dispersed along the four sides through the evenly spreading parts, so that when it passes through the material heating zone, it is heated more evenly and fully, and the drying effect is better.
[0013] The utility model is further configured such that the upper end of the spiral stirring paddle does not extend into the material heating zone.
[0014] By adopting the above technical solution, the operation of the heating device is prevented from being affected by the spiral stirring paddle, so that the material heating zone can be heated more evenly and the temperature can be better controlled.
[0015] The utility model is further configured that the driving member is a driving motor, and the motor shaft of the driving member is linked to the stirring shaft.
[0016] By adopting the above technical solution, a drive motor is used as a driving member to drive the stirring shaft and the spiral stirring paddle to rotate. Not only is the product price low and easy to purchase, but the drive motor and the stirring shaft can be linked through a coupling, and assembly and production are very convenient.
[0017] The utility model is further configured such that a partition is also provided in the tank body, the material storage area is arranged above the partition, a material use area is provided in the tank body at a position corresponding to the position below the partition, the discharge port is arranged on the partition, and a discharge pipe connected to the material use area is provided at the bottom of the tank body.
[0018] By adopting the above technical solution, the material heating area, the material storage area and the material use area are combined together to form a three-in-one structure, which can be directly installed on the injection molding machine for use later.
[0019] The utility model is further configured such that the partition and the bottom of the tank body are both in a conical shape that is larger at the top and smaller at the bottom.
[0020] By adopting the above technical solution, the material can be guided so that the material can move downward more easily.
[0021] The utility model is further configured that a vacuum control valve for connecting to an external vacuum device and a vacuum gauge for detecting the internal pressure are installed on the top of the tank body.
[0022] By adopting the above technical solution, a vacuum control valve is arranged on the tank body to facilitate the control of vacuuming, and a vacuum gauge is arranged on the tank body to facilitate the observation of the internal pressure. When the vacuum degree reaches the standard, the vacuum control valve is used to stop the external vacuum device from vacuuming the inside of the tank body in time.
[0023] The utility model is further configured that the heating device is a magnetron or an infrared heating tube.
[0024] By adopting the above technical solution, both the magnetron and the infrared heating tube can achieve the temperature increase of the material heating zone. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the utility model;
[0026] Figure 2 It is a schematic diagram of the overall structure of Embodiment 2 of the present utility model;
[0027] Figure 3 It is a schematic diagram of the overall structure of Embodiment 3 of the present utility model;
[0028] Figure 4 It is a schematic diagram of the overall structure of Example 4 of the utility model.
[0029] In the figure: 1. tank body; 2. heating device; 3. feed port; 4. discharge port; 5. opening and closing device; 6. material heating area; 7. material storage area; 8. circulating feeding mechanism; 9. driving member; 10. stirring shaft; 11. spiral stirring paddle; 12. bracket; 13. circulating conveying pipe; 14. circulating inlet; 15. circulating outlet; 16. evenly spreading member; 17. partition; 18. material area; 19. discharge pipe; 20. vacuum control valve; 21. vacuum gauge. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] The present invention is described in detail below through four specific implementation modes:
[0032] Among them, Example 1 and Example 2 are two-in-one structures, and Example 3 and Example 4 are three-in-one structures.
[0033] The two-in-one structure is as follows:
[0034] Embodiment 1: As attached Figure 1 The circulating mixing vacuum drying tank shown comprises a tank body 1 and a heating device 2 arranged on the tank body 1. The tank body 1 is also provided with a feed port 3 for material entry and a discharge port 4 for material discharge. The feed port 3 and the discharge port 4 are each provided with an opening and closing device 5. The opening and closing device 5 can be an electric butterfly valve. The tank body 1 is provided with a material heating area 6 and a material storage area 7 which are interconnected. The two are arranged vertically from top to bottom. The heating device 2 heats the material heating area 6. The tank body 1 is also provided with a circulating feeding mechanism 8. The circulating feeding mechanism 8 includes The drive member 9, the stirring shaft 10 and the spiral stirring paddle 11, the upper end of the tank body 1 is provided with a bracket 12, the drive member 9 is installed on the bracket 12, the stirring shaft 10 is arranged in the tank body 1, and one end of the stirring shaft 10 passes through the tank body 1 and is linked to the output end of the drive member 9, the other end of the stirring shaft 10 extends to the position of the discharge port 4 of the tank body 1, the spiral stirring paddle 11 is spirally arranged on the stirring shaft 10 along the axial direction, and the bottom end of the spiral stirring paddle 11 also extends to the position of the discharge port 4 of the tank body 1, wherein the spiral stirring paddle 11 is arranged on the stirring shaft 10 by welding. The driving member 9 is used to drive the stirring shaft 10 and the spiral stirring paddle 11 to rotate. Since the stirring shaft 10 and the spiral stirring paddle 11 extend to the position of the discharge port 4 of the tank body 1, when working, the undried material at the bottom of the material storage area 7 can be continuously transported to the top of the material storage area 7 for cyclic heating and drying, and the internal circulation and material stirring are carried out simultaneously. It is not only simple and reliable in structure, but also has a lower manufacturing cost, and can make the materials in each part more evenly heated, and the drying effect is better.
[0035] It should be noted that the upper end of the spiral stirring blade 11 does not extend into the material heating zone 6. Avoiding the operation of the heating device 2 from being affected by the spiral stirring blade 11 can make the material heating zone 6 more evenly heated and the temperature better controlled.
[0036] The driving member 9 is a driving motor, and the motor shaft of the driving member 9 is linked to the stirring shaft 10. The driving motor is used as the driving member 9 to drive the stirring shaft 10 and the spiral stirring paddle 11 to rotate. Not only is the product price low and easy to purchase, but the driving motor and the stirring shaft 10 can be linked to each other through a coupling, and the assembly and production are very convenient.
[0037] As attached Figure 1 As shown, a vacuum control valve 20 for connecting to an external vacuum pump (vacuum pump) and a vacuum gauge 21 for detecting the internal pressure are installed on the top of the tank body 1. The vacuum control valve 20 is provided on the tank body 1 to facilitate the control of vacuum pumping, and the vacuum gauge 21 is provided on the tank body 1 to facilitate the observation of the internal pressure. When the vacuum degree reaches the standard, the vacuum control valve is used to stop the external vacuum pumping device from vacuuming the inside of the tank body 1 in time.
[0038] The heating device 2 is a magnetron or an infrared heating tube. Both the magnetron and the infrared heating tube can increase the temperature of the material heating zone 6.
[0039] In addition, the tank body 1 can be divided into two parts, a bottom tank and a top cover, which are detachably connected.
[0040] Embodiment 2: As attached Figure 2 As shown, based on the structure of embodiment 1, the circulating feeding mechanism 8 in this embodiment further includes a circulating conveying pipe 13 installed on the tank body 1, and the circulating conveying pipe 13 is arranged on the outer periphery of the spiral stirring paddle 11, and the outer edge of the spiral stirring paddle 11 is in contact with the circulating conveying pipe 13. The circulating conveying pipe 13 plays a role in guiding the material. When the spiral stirring paddle 11 rotates, the material is spirally conveyed from the bottom to the top, which can make the material heating more uniform.
[0041] As attached Figure 2 As shown, the circulating conveying pipe 13 passes through the top of the tank body 1 and extends to the discharge port 4 of the tank body 1, wherein the top of the circulating conveying pipe 13 is connected to the bracket 12 through a flange, and the circulating conveying pipe 13 is welded and fixed to the tank body 1, and at least one circulating inlet 14 for connecting the material storage area 7 with the circulating conveying pipe 13 is opened on the side of the bottom end of the circulating conveying pipe 13, and at least one circulating outlet 15 for connecting the material heating area 6 with the circulating conveying pipe 13 is opened at the position of the circulating conveying pipe 13 corresponding to the material heating area 6. The structure of the circulating conveying pipe 13 is simple and reliable, and the production is very convenient.
[0042] As attached Figure 2As shown, a uniformly distributed piece 16 is provided on the circulation conveying pipe 13 at a position corresponding to the lower part of the circulation outlet 15. The uniformly distributed piece 16 is in a conical shape with a small top and a large bottom. The uniformly distributed piece 16 is a bell-mouth structure, and its inner edge is welded to the outer periphery of the circulation conveying pipe 13. There is a material passing gap between the outer edge of the uniformly distributed piece 16 and the inner wall of the tank body 1. After the material falls from the upper part of the tank body 1, it can be evenly dispersed along the four sides through the uniformly distributed piece 16, so that when it passes through the material heating zone 6, it is heated more evenly and fully, and the drying effect is better.
[0043] The three-in-one structure is as follows:
[0044] Embodiment 3: As attached Figure 3 As shown, on the basis of the structure of Example 1, a partition 17 is further provided in the tank body 1 in this embodiment, the outer edge of the partition 17 is welded to the inner wall of the tank body 1, the material storage area 7 is arranged above the partition 17, a material area 18 is arranged in the tank body 1 at a position corresponding to the position below the partition 17, the discharge port 4 is arranged on the partition 17, and a discharge pipe 19 connected to the material area 18 is arranged at the bottom of the tank body 1. The material heating area 6, the material storage area 7 and the material area 18 are combined together to form a three-in-one structure, which can be directly installed on the injection molding machine for use later.
[0045] The partition plate 17 and the bottom of the tank body 1 are both in a conical shape with a larger top and a smaller bottom. This design can guide the material and make it easier for the material to move downward.
[0046] Embodiment 4: As attached Figure 4 As shown, this embodiment adds a circulating conveying pipe 13 on the basis of Embodiment 3. For the structure and installation method of the circulating conveying pipe 13, reference may be made to the description in Embodiment 2.
Claims
1. A circulating mixing vacuum drying tank, comprising a tank body (1) and a heating device (2) arranged on the tank body (1), the tank body (1) is also provided with a feed port (3) for material entry and a discharge port (4) for material discharge, the feed port (3) and the discharge port (4) are each provided with an opening and closing device (5), characterized in that: The tank body (1) is provided with a material heating zone (6) and a material storage zone (7) which are interconnected. The heating device (2) heats the material heating zone (6). The tank body (1) is also provided with a circulating feeding mechanism (8). The circulating feeding mechanism (8) comprises a driving member (9), a stirring shaft (10) and a spiral stirring paddle (11). A bracket (12) is provided at the upper end of the tank body (1). The driving member (9) is mounted on the bracket (12). The stirring shaft (10) is arranged in the tank body (1), and one end of the stirring shaft (10) passes through the tank body (1) and is linked to the output end of the driving member (9). The other end of the stirring shaft (10) extends to the position of the discharge port (4) of the tank body (1). The spiral stirring paddle (11) is spirally arranged on the stirring shaft (10) along the axial direction, and the bottom end of the spiral stirring paddle (11) also extends to the position of the discharge port (4) of the tank body (1).
2. The circulating mixing vacuum drying tank according to claim 1, characterized in that: The circulating feeding mechanism (8) further comprises a circulating conveying pipe (13) mounted on the tank body (1), wherein the circulating conveying pipe (13) is arranged on the outer periphery of the spiral stirring paddle (11), and the outer edge of the spiral stirring paddle (11) is in contact with the circulating conveying pipe (13).
3. The circulating mixing vacuum drying tank according to claim 2 is characterized in that: The circulation conveying pipe (13) passes through the top of the tank body (1) and extends to the discharge port (4) of the tank body (1), and at least one circulation inlet (14) for connecting the material storage area (7) with the circulation conveying pipe (13) is provided on the side of the bottom end of the circulation conveying pipe (13), and at least one circulation outlet (15) for connecting the material heating area (6) with the circulation conveying pipe (13) is provided at a position corresponding to the material heating area (6).
4. The circulating mixing vacuum drying tank according to claim 3 is characterized in that: A spreading member (16) is provided on the circulation conveying pipe (13) at a position below the circulation outlet (15), and the spreading member (16) is in a conical shape that is smaller at the top and larger at the bottom.
5. The circulating mixing vacuum drying tank according to any one of claims 1 to 4, characterized in that: The upper end of the spiral stirring blade (11) does not extend into the material heating zone (6).
6. The circulating mixing vacuum drying tank according to claim 1, characterized in that: The driving member (9) is a driving motor, and the motor shaft of the driving member (9) is linked to the stirring shaft (10).
7. The circulating mixing vacuum drying tank according to claim 1, characterized in that: A partition (17) is also provided in the tank body (1), the material storage area (7) is arranged above the partition (17), a material use area (18) is provided in the tank body (1) at a position corresponding to the position below the partition (17), the discharge port (4) is arranged on the partition (17), and a discharge pipe (19) connected to the material use area (18) is provided at the bottom of the tank body (1).
8. The circulating mixing vacuum drying tank according to claim 7, characterized in that: The partition (17) and the bottom of the tank body (1) are both in a conical shape with a larger top and a smaller bottom.
9. The circulating mixing vacuum drying tank according to claim 1, characterized in that: A vacuum control valve (20) for connecting to an external vacuum device and a vacuum gauge (21) for detecting internal pressure are installed on the top of the tank body (1).
10. The circulating mixing vacuum drying tank according to claim 1, characterized in that: The heating device (2) is a magnetron or an infrared heating tube.