Pretreatment device for polycarbonate production raw materials
By designing a polycarbonate production raw material pretreatment device including a pouring mesh plate, a hot air fan and a circulating drying structure, the problem that the existing drying method is difficult to ensure uniform and thorough drying and treatment of impurities is solved, and the full drying of raw materials and impurities are achieved.
Patent Information
- Application Number
- CN202421677863.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The existing drying method is difficult to ensure uniform and thorough drying of the raw materials accumulated on the bottom layer, and it is difficult to deal with dust and impurities at the same time.
A pretreatment device for raw materials for polycarbonate production is designed, including a pretreatment bin, a pouring mesh plate, a hot air fan, a uniform stirring structure and a circulating drying structure. Through the inclined design of the pouring mesh plate and the coordination of the electric telescopic rod, the raw materials can be uniformly heated and dried; the non-woven filter layer and filter box are used to treat impurities and moisture.
The full and even drying of raw materials is achieved, the quality of the product is ensured, and the dust impurities are effectively treated, improving the overall treatment efficiency.
Smart Images
Figure CN222768779U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of carbonate production equipment, in particular to a polycarbonate production raw material pretreatment device. Background Art
[0002] Polycarbonate is an amorphous thermoplastic with excellent comprehensive properties such as high strength and rigidity, heat resistance and cold resistance, transparency and gloss, chemical resistance and weather resistance. It is widely used in automobiles, electronic appliances, medical equipment, building materials, packaging materials and other fields.
[0003] There are two main methods for preparing polycarbonate: interfacial polycondensation and melt transesterification. The melt transesterification method uses bisphenol A and diphenyl carbonate as raw materials to carry out transesterification and polycondensation under high temperature and high vacuum conditions to produce polycarbonate. This method does not require the use of phosgene and is relatively more environmentally friendly, but requires higher technical conditions and equipment requirements.
[0004] Before the production of polycarbonate, the raw materials need to be pretreated. The cleanliness and dryness of the raw materials are crucial to the production of polycarbonate, which directly affects the quality and performance. The existing pretreatment methods are mostly drying by hot air accompanied by stirring. Whether the stirring is sufficient directly affects the treatment effect. When processing a large number of raw materials, it is difficult to ensure the adequacy of thermal drying of the raw materials accumulated on the bottom layer, and it is also difficult to handle the existing dust and impurities. Utility Model Content
[0005] The technical problem to be solved by the utility model is that the existing drying method is difficult to ensure the sufficiency of drying, especially the drying of the raw materials piled up at the bottom is not uniform and thorough enough, and the dust and impurities are inconvenient to be processed at the same time.
[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: the utility model proposes a polycarbonate production raw material pretreatment device, comprising a pretreatment bin, wherein a first and a second material pouring mesh plate are inclinedly arranged in the pretreatment bin, the first and the second material pouring mesh plate are staggered in height, a discharge port is arranged at one end of the first and the second material pouring mesh plate, an electric telescopic rod and a sealing plate are arranged at the bottom of the second material pouring mesh plate, the sealing plate is slidably arranged on the bottom wall of the second material pouring mesh plate, the free end of the electric telescopic rod is connected to the sealing plate, and the discharge port of the second material pouring mesh plate is blocked or opened by the sealing plate, a discharge pipe is arranged at the bottom of the pretreatment bin, a hot air blower is arranged on the bottom side wall of the pretreatment bin, a plurality of groups of jet heads are evenly distributed on the bottom wall of the pretreatment bin, the jet heads are connected to the hot air blower through a hot air pipe, a uniform stirring structure is arranged on the top of the pretreatment bin, and a circulating drying structure is also arranged on the side wall of the pretreatment bin.
[0007] Preferred technical solution one: the uniform stirring structure includes a stirring bin, a stirring motor and a stirring shaft, the stirring bin is arranged at the top of the pretreatment bin, a feeding pipe is provided between the stirring bin and the pretreatment bin, the upper end of the stirring shaft is rotatably arranged on the top wall of the stirring bin, the lower end of the stirring shaft passes through the feeding pipe and the first pouring mesh plate in sequence and is rotatably arranged inside the pretreatment bin, the stirring motor is arranged at the top of the stirring bin and the power output shaft is connected to the stirring shaft, the stirring shaft is provided with a stirring rod, a spiral feeding blade and two groups of stirring brushes from top to bottom, and the two groups of stirring brushes are in contact with the surfaces of the first pouring mesh plate and the second pouring mesh plate respectively.
[0008] Preferred technical solution two: The circulating drying structure includes a feeding bin, a feeding motor and a feeding shaft. The feeding bin is arranged on the side wall of the pretreatment bin. A circulating feed port is arranged between the bottom of the feeding bin and the pretreatment bin. The side wall of the feeding bin is also provided with a circulating discharge pipe. The circulating discharge pipe passes through and extends to the interior of the pretreatment bin. The feeding shaft is rotatably arranged between the bottom wall and the top wall of the feeding bin. The feeding shaft is provided with spiral feeding blades. The feeding motor is arranged on the top of the feeding bin and the power output shaft is connected to the feeding shaft.
[0009] Preferred technical solution three: An exhaust bin is also provided on the top of the side wall of the pretreatment bin, and the exhaust bin is connected to the pretreatment bin through an exhaust pipe. A non-woven filter layer and a filter box are provided in the exhaust bin, and the filter box is filled with a dehumidifier. Exhaust holes are correspondingly provided at the bottom of the filter box and the bottom wall of the exhaust bin.
[0010] Preferred technical solution four: Support legs are provided at the bottom of the pretreatment bin, and a control display screen is also provided on the front wall of the pretreatment bin; the hot air blower, stirring motor, feeding motor and electric telescopic rod are all electrically connected to the control display screen.
[0011] Optimal technical solution five: a feeding port is also provided on the top of the mixing bin.
[0012] The utility model proposes a polycarbonate production raw material pretreatment device, which adopts the above structure to achieve the following beneficial effects:
[0013] (1) The raw materials are fully rolled and heated and dried by the pretreatment bin, the first and second material pouring mesh plates and the hot air blower. At the same time, the raw materials are circulated and dried by the circulation drying structure. The uniform stirring structure makes the raw materials circulate and dry without accumulation, further promoting the sufficiency and uniformity of drying;
[0014] (2) After the drying is completed, the material is discharged through the electric telescopic rod and the sealing plate. During the hot coagulation process, moisture and dust impurities are discharged into the exhaust bin through the exhaust pipe. The impurities, dust and moisture are treated by the non-woven filter layer and the filter box, thereby achieving simultaneous drying and impurity dust treatment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0016] Figure 1 This is a schematic diagram of the overall structure of a polycarbonate production raw material pretreatment device proposed by the utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of a polycarbonate production raw material pretreatment device proposed by the utility model;
[0018] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A.
[0019] Among them, 1. pretreatment bin, 2. pouring screen plate 1, 3. pouring screen plate 2, 4. electric telescopic rod, 5. sealing plate, 6. discharge pipe, 7. hot air blower, 8. jet nozzle, 9. uniform stirring structure, 10. circulation drying structure, 11. stirring bin, 12. stirring motor, 13. stirring shaft, 14. stirring rod, 15. spiral discharge blade, 16. stirring brush, 17. feeding bin, 18. feeding motor, 19. feeding shaft, 20. circulation feed port, 21. circulation discharge pipe, 22. spiral feeding blade, 23. exhaust bin, 24. non-woven filter layer, 25. filter box, 26. control display screen, 27. feeding port. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0021] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.
[0022] Embodiment 1
[0023] like Figures 1 to 3As shown, the technical scheme adopted by the utility model is as follows: a polycarbonate production raw material pretreatment device, including a pretreatment bin 1, in which a material pouring mesh plate 1 2 and a material pouring mesh plate 2 3 are tiltedly arranged, the material pouring mesh plate 1 2 and the material pouring mesh plate 2 3 are staggered in height direction, one end of the material pouring mesh plate 1 2 and the material pouring mesh plate 2 3 is provided with a discharge port, the bottom of the material pouring mesh plate 2 3 is provided with an electric telescopic rod 4 and a sealing plate 5, the sealing plate 5 is slidably arranged on the bottom wall of the material pouring mesh plate 2 3, the free end of the electric telescopic rod 4 is connected to the sealing plate 5, the discharge port of the material pouring mesh plate 2 3 is blocked or opened by the sealing plate 5, a discharge pipe 6 is provided at the bottom of the pretreatment bin 1, a hot air blower 7 is provided on the bottom side wall of the pretreatment bin 1, a plurality of groups of air jets 8 are evenly distributed on the bottom wall of the pretreatment bin 1, the air jets 8 are connected to the hot air blower 7 through a hot air pipe, a uniform stirring structure 9 is provided on the top of the pretreatment bin 1, and a circulating drying structure 10 is also provided on the side wall of the pretreatment bin 1;
[0024] The uniform stirring structure 9 includes a stirring chamber 11, a stirring motor 12 and a stirring shaft 13. The stirring chamber 11 is arranged at the top of the pretreatment chamber 1. A feeding pipe 6 is provided between the stirring chamber 11 and the pretreatment chamber 1. The upper end of the stirring shaft 13 is rotatably arranged on the top wall of the stirring chamber 11. The lower end of the stirring shaft 13 sequentially passes through the feeding pipe 6 and the material pouring mesh plate 2 and is rotatably arranged inside the pretreatment chamber 1. The stirring motor 12 is arranged at the top of the stirring chamber 11 and the power output shaft is connected to the stirring shaft 13. The stirring shaft 13 is sequentially provided with a stirring rod 14, a spiral feeding blade 15 and two groups of stirring brushes 16 from top to bottom. The two groups of stirring brushes 16 are in contact with the surfaces of the material pouring mesh plate 2 and the material pouring mesh plate 3 respectively. A feeding port 27 is also provided on the top of the stirring chamber 11.
[0025] The circulating drying structure 10 includes a loading bin 17, a loading motor 18 and a loading shaft 19. The loading bin 17 is arranged on the side wall of the pretreatment bin 1. A circulating feed port 20 is arranged between the bottom of the loading bin 17 and the pretreatment bin 1. The side wall of the loading bin 17 is also provided with a circulating discharge pipe 21. The circulating discharge pipe 21 passes through and extends to the interior of the pretreatment bin 1. The loading shaft 19 is rotatably arranged between the bottom wall and the top wall of the loading bin 17. A spiral loading blade 22 is arranged on the loading shaft 19. The loading motor 18 is arranged on the top of the loading bin 17 and the power output shaft is connected to the loading shaft 19.
[0026] Embodiment 2
[0027] Based on the first embodiment, Figure 1 As shown, an exhaust bin 23 is also provided at the top of the side wall of the pretreatment bin 1. The exhaust bin 23 is connected to the pretreatment bin 1 through an exhaust pipe. A non-woven filter layer 24 and a filter box 25 are provided in the exhaust bin 23. The filter box 25 is filled with a dehumidifying agent. Exhaust holes are correspondingly provided at the bottom of the filter box 25 and the bottom wall of the exhaust bin 23.
[0028] Among them, support legs are provided at the bottom of the pretreatment chamber 1, and a control display screen 26 is also provided on the front wall of the pretreatment chamber 1. The hot air blower 7, the stirring motor 12, the feeding motor 18 and the electric telescopic rod 4 are all electrically connected to the control display screen 26.
[0029] When in use, the raw materials to be processed are put into the mixing bin 11 through the feeding port 27, and then the mixing motor 12 and the mixing shaft 13 are started to rotate, the raw materials are scattered by the mixing rod 14, and the raw materials are evenly and slowly put into the pretreatment bin 1 through the spiral feeding blade 15. The raw materials slide on the pouring mesh plate 1 2 and the pouring mesh plate 2 3 in turn, and are brushed by two groups of stirring brushes 16 to prevent the accumulation of raw materials. During the falling process, the hot air blower 7 and the multiple groups of air jets 8 cooperate to blow hot air from the bottom upward to heat the inside of the pretreatment bin 1, and at the same time, the raw materials are Impurities and dust mixed in the material are discharged into the exhaust bin 23 through the exhaust pipe, and the dust and humid air are processed by the non-woven filter layer 24 and the filter box 25. The rolled raw materials enter the loading bin 17 through the circulating feed port 20, and the loading shaft 19 is driven to rotate by the loading motor 18, thereby driving the spiral loading blades 22 to transport the raw materials upward, and discharged through the circulating discharge pipe 21 to realize the circulating heating treatment. After the treatment is completed, the free end is retracted by the electric telescopic rod 4, driving the sealing plate 5 to leak out of the discharge port, so that the raw materials are discharged through the discharge pipe 6.
[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A polycarbonate production raw material pretreatment device, comprising a pretreatment chamber, characterized in that: A first and a second material pouring mesh plate are inclinedly arranged in the pretreatment bin, and the first and the second material pouring mesh plates are staggered in height direction, and a discharge port is arranged at one end of the first and the second material pouring mesh plate, and an electric telescopic rod and a sealing plate are arranged at the bottom of the second material pouring mesh plate, and the sealing plate is slidably arranged on the bottom wall of the second material pouring mesh plate, and the free end of the electric telescopic rod is connected to the sealing plate, a discharge pipe is arranged at the bottom of the pretreatment bin, and a hot air blower is arranged on the bottom side wall of the pretreatment bin, and a plurality of groups of air jets are evenly distributed on the bottom wall of the pretreatment bin, and the air jets are connected to the hot air blower through a hot air pipe, a uniform stirring structure is arranged on the top of the pretreatment bin, and a circulating drying structure is also arranged on the side wall of the pretreatment bin.
2. A polycarbonate production raw material pretreatment device according to claim 1, characterized in that: The uniform stirring structure includes a stirring bin, a stirring motor and a stirring shaft. The stirring bin is arranged at the top of the pretreatment bin. A feeding pipe is provided between the stirring bin and the pretreatment bin. The upper end of the stirring shaft is rotatably arranged on the top wall of the stirring bin. The lower end of the stirring shaft passes through the feeding pipe and the first pouring mesh plate in sequence and is rotatably arranged inside the pretreatment bin. The stirring motor is arranged at the top of the stirring bin and the power output shaft is connected to the stirring shaft. The stirring shaft is provided with a stirring rod, a spiral feeding blade and two groups of stirring brushes from top to bottom. The two groups of stirring brushes are in contact with the surfaces of the first pouring mesh plate and the second pouring mesh plate respectively.
3. A polycarbonate production raw material pretreatment device according to claim 2, characterized in that: The circulating drying structure includes a feeding bin, a feeding motor and a feeding shaft. The feeding bin is arranged on the side wall of the pretreatment bin. A circulating feed port is arranged between the bottom of the feeding bin and the pretreatment bin. A circulating discharge pipe is also arranged on the side wall of the feeding bin. The circulating discharge pipe passes through and extends to the interior of the pretreatment bin. The feeding shaft is rotatably arranged between the bottom wall and the top wall of the feeding bin. A spiral feeding blade is arranged on the feeding shaft. The feeding motor is arranged on the top of the feeding bin and the power output shaft is connected to the feeding shaft.
4. A polycarbonate production raw material pretreatment device according to claim 3, characterized in that: An exhaust bin is also provided at the top of the side wall of the pretreatment bin, and the exhaust bin is connected to the pretreatment bin through an exhaust pipe. A non-woven filter layer and a filter box are provided in the exhaust bin, and the filter box is filled with a dehumidifier. Exhaust holes are correspondingly provided at the bottom of the filter box and the bottom wall of the exhaust bin.
5. A polycarbonate production raw material pretreatment device according to claim 4, characterized in that: The bottom of the pretreatment bin is provided with supporting legs, the front wall of the pretreatment bin is also provided with a control display screen, and the hot air blower, the stirring motor, the feeding motor and the electric telescopic rod are all electrically connected to the control display screen.
6. A polycarbonate production raw material pretreatment device according to claim 5, characterized in that: A feeding port is also provided on the top of the mixing bin.