Drying kettle for manufacturing synthetic resin

Abstract

The utility model provides a drying kettle for manufacturing synthetic resin, which relates to the technical field of drying kettles, and comprises a drying kettle assembly, the drying kettle assembly comprises a drying kettle body and a cover body arranged above the drying kettle body, the outer side of the drying kettle body is sleeved with a heat conduction ring, a heating spiral pipe is arranged in the heat conduction ring in a penetrating manner, and the heating spiral pipe is connected with the drying kettle body. A heat preservation sleeve is arranged on the outer side of the heat conduction ring, one end of the heating spiral pipe is connected with the heat conduction oil inlet, and the other end of the heating spiral pipe is connected with the heat conduction oil outlet. Heat is provided through the heating spiral pipe, can be quickly and fully transmitted to the heat conducting ring, and then is uniformly transmitted to the drying kettle body through the heat conducting ring. The moisture in the synthetic resin is rapidly evaporated, the moisture-removed synthetic resin meets the requirements of subsequent processing, long-term storage is facilitated, and resin deterioration caused by moisture is prevented. The arrangement of the heat insulation sleeve effectively reduces heat loss to the outside, so that the heat efficiency of the heating system is improved, the energy consumption is reduced, and the production cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the technical field of drying kettle, concretely relates to a drying kettle for synthetic resin manufacturing. BACKGROUND

[0002] In modern industrial production, synthetic resin as an important basic material is widely used in plastics, coatings, adhesives and many other fields. With the continuous improvement of the quality and performance requirements of synthetic resin in various industries, the drying process of synthetic resin has become a key link affecting its quality and production efficiency.

[0003] The traditional synthetic resin drying method mainly includes natural airing, hot air drying and ordinary heating drying. Natural airing is greatly limited by weather and site, and has long drying time and unstable drying effect, which is difficult to meet the needs of large-scale industrial production. Although hot air drying can accelerate the drying speed to a certain extent, it is easy to cause uneven heat distribution, resulting in local overheating of synthetic resin, and further causing resin discoloration, performance degradation and other problems, affecting product quality. The ordinary heating drying equipment has a single heating mode, low heat transfer efficiency, large energy consumption and high production cost.

[0004] In addition, during the drying process, synthetic resin is prone to agglomeration due to uneven stirring, which not only reduces the drying efficiency, but also leads to uneven product quality. At the same time, for the water vapor generated during the drying process, the traditional drying equipment often lacks an effective recycling system, causing water resource waste and environmental pollution.

[0005] In order to overcome the various disadvantages of the above-mentioned traditional drying method, meet the growing demand for synthetic resin production, and develop a high-efficiency, energy-saving, environmentally friendly and product quality guaranteed synthetic resin drying equipment is imminent. UTILITY MODEL CONTENTS

[0006] 1. The technical problem to be solved by the utility model is:

[0007] The utility model provides a drying kettle for synthetic resin manufacturing to solve the technical problems in the above background technology.

[0008] 2. Technical scheme:

[0009] To achieve the above objectives, the technical solution provided by this utility model is as follows: a drying kettle for manufacturing synthetic resin, comprising a drying kettle assembly, including a drying kettle body and a cover disposed above the drying kettle body. A stirring mechanism is disposed inside the drying kettle body. A heat-conducting ring is sleeved on the outer side of the drying kettle body, and a heating spiral tube is inserted inside the heat-conducting ring. An insulation sleeve is disposed on the outer side of the heat-conducting ring. One end of the heating spiral tube is connected to a heat-conducting oil inlet, and the other end is connected to a heat-conducting oil outlet. High-temperature heat-conducting oil is introduced into the heating spiral tube through the heat-conducting oil inlet. The high-temperature heat-conducting oil circulates within the heating spiral tube, transferring heat to the surrounding heat-conducting ring, and then flows from the heat-conducting oil outlet into an external heat-conducting oil heating and circulation system.

[0010] Preferably, the cover is provided with a resin inlet and several water vapor outlets, and a solenoid valve is provided on the water vapor outlet. The other end of the solenoid valve is connected to the condenser through a connecting pipe.

[0011] Preferably, the cover is also provided with a vacuum pipe, the other end of which is connected to a vacuum pump. A vacuum valve is provided on the vacuum pipe, and a vacuum sensor is provided inside the drying vessel.

[0012] Preferably, the stirring mechanism includes a mounting base disposed on the cover, a speed reducer fixedly mounted on the mounting base, the input end of the speed reducer being connected to a motor, and its output end being connected to a rotating shaft, the rotating shaft extending out of the drying kettle body, and a plurality of stirring rod assemblies being alternately arranged on the rotating shaft.

[0013] Preferably, the stirring rod assembly includes two mounting rings, one mounting ring having a stirring rod one disposed on it, and the other mounting ring having a stirring rod two disposed on it. The stirring rod one is straight and the stirring rod two is T-shaped.

[0014] 3. Beneficial effects:

[0015] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0016] This invention provides heat through a heating spiral tube tightly wrapped inside a heat-conducting ring. As the heat-conducting oil flows within the tube, heat is rapidly and effectively transferred to the ring, and then evenly conducted to the drying vessel body. Under vacuum conditions, the moisture in the synthetic resin evaporates quickly. The moisture-free synthetic resin meets the requirements for subsequent processing, is suitable for long-term storage, and prevents resin deterioration due to moisture. The insulation jacket effectively reduces heat loss to the outside, improving the thermal efficiency of the heating system, reducing energy consumption, and saving production costs.

[0017] This invention lowers the boiling point of water by creating a vacuum environment. The vacuum level can be adjusted to a suitable level according to production efficiency requirements, meeting diverse drying process needs and making moisture evaporate more easily. Simultaneously, the stirring device continuously agitates the resin, increasing the contact area between the resin and hot air, thus accelerating the evaporation rate. Compared to traditional atmospheric pressure drying methods, this reduces drying time, significantly improving production efficiency and meeting the needs of large-scale industrial production.

[0018] The staggered design of the straight and T-shaped stirring rods in this invention optimizes the stirring effect from both mechanical and material flow perspectives. During rotation, the stirring rods create a complex material flow field, causing the resin to tumble and mix comprehensively within the drying vessel. This effectively prevents resin agglomeration during drying and avoids resin adhesion to the inner wall of the drying vessel, ensuring smooth drying and improving drying quality. Furthermore, this invention avoids localized overheating and decomposition or uneven drying of the resin through uniform heating and stirring, preventing discoloration and performance degradation due to localized overheating. It ensures consistent moisture content and stable performance in each batch of synthetic resin, improving product qualification rate and market competitiveness.

[0019] The steam outlet of this invention is connected to the condenser via a connecting pipe, forming a complete steam recovery and treatment system. The recovered liquid water can be further treated and recycled, which conforms to the concept of environmental protection and reduces water waste and environmental pollution in the production process. Attached Figure Description

[0020] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Fig. 2 This is a schematic diagram of the cover structure of this utility model;

[0022] Fig. 3 This is a schematic diagram of the exploded structure of the drying kettle assembly of this utility model;

[0023] Fig. 4 This is a schematic diagram of the structure of this utility model without the insulation sleeve;

[0024] Fig. 5 This is a schematic diagram of the stirring mechanism of this utility model.

[0025] Figure label:

[0026] 1. Drying kettle assembly; 11. Lid; 12. Heat-conducting ring; 13. Insulation sleeve; 14. Heating spiral tube; 15. Drying kettle body; 16. Heat transfer oil inlet; 17. Heat transfer oil outlet; 2. Resin inlet; 3. Stirring mechanism; 31. Mounting base; 32. Reducer; 33. Motor; 34. Rotary shaft; 35. Mounting collar; 36. Stirring rod one; 37. Stirring rod two; 4. Steam outlet; 41. Solenoid valve; 5. Connecting pipe; 6. Condenser; 7. Vacuum pipeline; 8. Vacuum pump. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Example

[0032] See attached document Figs. 1-5 A drying kettle for manufacturing synthetic resin includes a drying kettle assembly 1, comprising a drying kettle body 15 and a cover 11 disposed above the drying kettle body 15. A stirring mechanism 3 is disposed inside the drying kettle body 15. A heat-conducting ring 12 is sleeved on the outside of the drying kettle body 15. A heating spiral tube 14 passes through the heat-conducting ring 12. An insulation sleeve 13 is disposed on the outside of the heat-conducting ring 12. One end of the heating spiral tube 14 is connected to a heat-conducting oil inlet 16, and the other end is connected to a heat-conducting oil outlet 17. High-temperature heat-conducting oil is introduced into the heating spiral tube 14 through the heat-conducting oil inlet 16. The high-temperature heat-conducting oil circulates within the heating spiral tube 14, transferring heat to the surrounding heat-conducting ring 12, and then flows from the heat-conducting oil outlet 17 into an external heat-conducting oil heating and circulation system.

[0033] The cover 11 is provided with a resin inlet 2 and several steam outlets 4. A solenoid valve 41 is provided on the steam outlets 4, and the other end of the solenoid valve 41 is connected to the condenser 6 through a connecting pipe 5. The cover 11 is also provided with a vacuum pipe 7, the other end of which is connected to a vacuum pump 8. A vacuum valve is provided on the vacuum pipe 7, and a vacuum sensor is provided inside the drying kettle body 15.

[0034] The stirring mechanism 3 includes a mounting base 31 mounted on the cover 11. A reducer 32 is fixedly mounted on the mounting base 31. The input end of the reducer 32 is connected to a motor 33, and its output end is connected to a rotating shaft 34. The rotating shaft 34 extends into the drying vessel body 15, and several stirring rod assemblies are staggered on the rotating shaft 34. Each stirring rod assembly includes two mounting rings 35. One mounting ring 35 has a stirring rod 36, and the other mounting ring 35 has a stirring rod 37. The stirring rod 36 is straight, and the stirring rod 37 is T-shaped.

[0035] Working principle:

[0036] Driven by an external heat transfer oil heating and circulation system, high-temperature heat transfer oil flows into the heating spiral tube 14 through the heat transfer oil inlet 16. The initial temperature of the heat transfer oil is generally between 150-200℃. Inside the heating spiral tube 14, the heat transfer oil circulates at a certain flow rate, and the heat it carries is continuously transferred to the heat transfer ring 12 through the tube wall, preparing for the subsequent heating of the drying kettle body 15.

[0037] The synthetic resin to be dried is conveyed into the drying kettle body 15 through resin inlet 2. During the feeding process, the feeding speed can be controlled by adjusting the opening of the feeding valve according to production needs, ensuring uniform material distribution in the drying kettle and avoiding material accumulation due to excessive feeding speed.

[0038] Before starting the vacuum pump 8, check that the vacuum pipe 7 is tightly connected to ensure there are no leaks. After starting the vacuum pump 8, it quickly extracts air from the drying vessel body 15 through the vacuum pipe 7. The vacuum sensor monitors the vacuum level changes inside the drying vessel in real time with high precision and feeds the data back to the control system. When the vacuum level reaches a preset value, such as -0.08MPa (set according to different resin drying requirements), the control system automatically closes the vacuum valve to maintain a stable vacuum environment in the drying vessel.

[0039] The motor 33 starts, and its high-speed rotational power is transmitted to the reducer 32. The reducer 32, according to a certain reduction ratio, converts the high-speed rotation of the motor into low-speed, high-torque rotation suitable for stirring requirements, driving the rotating shaft 34 to rotate. The rotating shaft 34 drives the staggered stirring rod assembly on it to start working.

[0040] The straight-line stirring rod 36 primarily stirs the resin axially during rotation, propelling it axially within the drying vessel to ensure thorough mixing between the upper and lower layers. The T-shaped stirring rod 37, on the other hand, focuses on radial stirring. Its horizontal section effectively disperses the resin, preventing agglomeration, while its vertical section further enhances the agitation of the material, resulting in more uniform heating of the resin.

[0041] As the heating spiral tube 14 continuously transfers heat to the heat conduction ring 12, the temperature inside the drying vessel body 15 gradually rises. Moisture in the synthetic resin rapidly vaporizes into water vapor under vacuum and high temperature conditions, and the water vapor is discharged through the water vapor outlet 4. The solenoid valve 41 on the water vapor outlet 4 is controlled by the control system based on data from the humidity sensor inside the drying vessel. When the humidity reaches a certain value, the solenoid valve 41 opens to discharge water vapor; when the humidity drops to the set range, the solenoid valve 41 closes to maintain a stable drying environment inside the drying vessel. The discharged water vapor enters the condenser 6 through the connecting pipe 5. Inside the condenser 6, the water vapor liquefies into liquid water upon cooling, achieving water vapor recovery or subsequent treatment.

[0042] When the synthetic resin in the drying kettle meets the drying requirements as detected by the online moisture detection device, for example, when the moisture content drops below 0.5% (as set according to different resin product standards), the control system issues a command to first stop the motor 33, causing the stirring rod assembly to stop working. Next, the circulation of the heat transfer oil in the heating spiral tube 14 is stopped, and the valves of the heat transfer oil inlet 16 and outlet 17 are closed, cutting off the heating source. Then, the solenoid valves 41 on the resin inlet 2 and steam outlet 4 are closed. Finally, the discharge port of the drying kettle body 15 is opened, and the dried synthetic resin is discharged by its own gravity or with the aid of an auxiliary discharge device.

[0043] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A drying autoclave for manufacturing synthetic resins, characterized in that: The utility model provides a kind of drying kettle assembly, including drying kettle body (15) and cover (11) being arranged above drying kettle body (15), stirring mechanism (3) is arranged in drying kettle body (15), heat conduction ring (12) is sleeved outside drying kettle body (15), heating spiral pipe (14) is arranged in heat conduction ring (12), heat preservation sleeve (13) is arranged outside heat conduction ring (12), one end of heating spiral pipe (14) is connected with heat conducting oil inlet (16), the other end is connected with heat conducting oil outlet (17), heating spiral pipe (14) is introduced high-temperature heat conducting oil by heat conducting oil inlet (16), high-temperature heat conducting oil circulates in heating spiral pipe (14), heat is transferred to surrounding heat conduction ring (12), then from heat conducting oil outlet (17) into external heat conducting oil heating and circulating system.

2. The drying vessel for synthetic resin production according to claim 1, characterized by: The cover (11) is provided with a resin inlet (2) and a plurality of water vapor outlets (4), the water vapor outlet (4) is provided with a solenoid valve (41), the other end of the solenoid valve (41) is connected with the condenser (6) through the connecting pipe (5).

3. The drying vessel for synthetic resin production according to claim 2, characterized by: The cover (11) is also provided with a vacuum pipeline (7), the other end of the vacuum pipeline (7) is connected with a vacuum pump (8), the vacuum pipeline (7) is provided with a vacuum valve, and the drying kettle body (15) is provided with a vacuum sensor.

4. The drying vessel for synthetic resin production according to claim 2, characterized by: The stirring mechanism (3) includes a mounting seat (31) arranged on the cover (11), a speed reducer (32) is fixedly installed on the mounting seat (31), the input end of the speed reducer (32) is connected with a motor (33), and the output end is connected with a rotating shaft (34), the rotating shaft (34) extends into the drying kettle body (15), and a plurality of stirring rod assemblies are arranged on the rotating shaft (34).

5. The drying vessel for synthetic resin production according to claim 4, characterized by: The stirring rod assembly includes two mounting rings (35), one of the mounting rings (35) is provided with a stirring rod one (36), and the other mounting ring (35) is provided with a stirring rod two (37), the stirring rod one (36) is a character type, and the stirring rod two (37) is a T type.

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