Heating device for plastic bottle processing raw materials

Abstract

The utility model discloses a heating device for plastic bottle processing raw materials, and relates to the technical field of plastic bottle processing. The PET particle heating device comprises a heating device body, a feeding pipe and a discharging pipe, a stirring mechanism and an intercepting mechanism are arranged in the heating device body, and the intercepting mechanism comprises a first intercepting plate and a second intercepting plate. The PET particles with the size smaller than that of the first through hole can penetrate through the first through hole and reach the second intercepting plate, and the PET particles with the size smaller than that of the second through hole can continuously penetrate through the second through hole and reach the lowest layer, so that the materials fed into the heating device main body are heated in a layered manner to be molten, and the melting speed is increased compared with the stacked materials; according to the method, the phenomenon that heat is difficult to reach unmelted materials due to overlapping and accumulation of the PET particles is avoided, so that the working efficiency is improved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bottle processing, in particular to a heating device for plastic bottle processing raw materials. Background Art

[0002] When making plastic bottles, the raw material PET particles are first put into a heating device, heated at high temperature to melt into a fluid, and then extruded through a screw extruder. They are then blow molded, extruded, or injection molded using a plastic mold. They are mainly used for disposable plastic packaging of liquids or solids such as beverages, foods, pickles, honey, dried fruits, edible oils, pesticides and veterinary drugs. In the high-temperature heating stage of plastic bottle processing, a heating device for plastic bottle processing raw materials is required.

[0003] In the existing heating device for plastic bottle processing raw materials, when heating PET particles, all the PET particles are put into the heating device for plastic bottle processing raw materials, and the heating function of the heating device body itself is used to turn them into a molten state, so that the subsequent process can proceed normally. However, all the materials put in at one time are piled up together, and the thermal conductivity of plastic is not good. Although there is a stirring device to assist in stirring, it still takes a long time to turn all the PET particles into a molten state, and the work efficiency needs to be further improved. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a heating device for plastic bottle processing raw materials to solve the technical problem that the working efficiency of the existing heating device for plastic bottle processing raw materials needs to be further improved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heating device for plastic bottle processing raw materials, comprising a heating device body, a feed pipe and a discharge pipe, a stirring mechanism and an intercepting mechanism are arranged inside the heating device body, the stirring mechanism comprises a servo motor, a rotating shaft is arranged at the output end of the servo motor, a first stirring paddle, a second stirring paddle and a third stirring paddle are arranged on the rotating shaft; the intercepting mechanism comprises a first intercepting plate and a second intercepting plate, a first through hole is opened on the first intercepting plate, and a second through hole is opened on the second intercepting plate.

[0006] By adopting the above technical solution and utilizing the interception mechanism, materials of different sizes are intercepted in different spaces, and all materials will not be piled up together due to too much material being put in, making it difficult for heat to be transmitted to the material in the middle, thus affecting the working efficiency of the main body of the heating device.

[0007] Furthermore, the servo motor is fixedly connected to the rotating shaft, and the rotating shaft is fixedly connected to the first stirring paddle, the second stirring paddle and the third stirring paddle.

[0008] By adopting the above technical solution, when the servo motor is started, it drives the rotating shaft fixedly connected thereto to rotate, thereby causing the first stirring paddle, the second stirring paddle and the third stirring paddle rotatably connected to the rotating shaft to rotate simultaneously.

[0009] Furthermore, the rotating shaft is rotatably connected to the first intercepting plate and the second intercepting plate, and the first intercepting plate and the second intercepting plate are fixedly connected to the inner wall of the heating device body.

[0010] By adopting the above technical solution, when the servo motor is started, the rotating shaft will rotate accordingly, and the rotational connection relationship between the rotating shaft and the first intercepting plate and the second intercepting plate ensures that the stirring process of the rotating shaft driving each stirring paddle will not be affected.

[0011] Furthermore, a plurality of the first through holes and the second through holes are provided, and the plurality of the first through holes and the second through holes are distributed in a circle.

[0012] By adopting the above technical solution, the arrangement of multiple first through holes and second through holes enables multiple channels for materials to fall, and the multiple channels can ensure normal falling.

[0013] Furthermore, both the first through hole and the second through hole are circular structures, and the aperture of the first through hole is larger than the aperture of the second through hole.

[0014] By adopting the above technical solution, the circular structure of the first through hole and the second through hole corresponds to the spherical PET particles, and when the circumference size of the spherical PET particles is smaller than the corresponding through hole, the spherical PET particles can pass through the corresponding through hole to reach the next layer.

[0015] Furthermore, the tops of the first stirring paddle, the second stirring paddle and the third stirring paddle are all provided with top scrapers, the sides of the first stirring paddle, the second stirring paddle and the third stirring paddle away from the rotating shaft are all provided with side scrapers, and the bottoms of the first stirring paddle, the second stirring paddle and the third stirring paddle are all provided with bottom scrapers.

[0016] By adopting the above technical solution, the arrangement of each scraper can scrape off the fluid material adhering to the inner wall of the main body of the heating device, the first intercepting plate and the second intercepting plate that has not had time to drip.

[0017] Furthermore, the side scraper abuts against the inner wall of the heating device body, the bottom scraper of the first stirring paddle and the top scraper of the second stirring paddle abut against the top and bottom of the first intercepting plate respectively, and the bottom scraper of the second stirring paddle and the top scraper of the third stirring paddle abut against the top and bottom of the second intercepting plate respectively.

[0018] By adopting the above technical solution, the side scraper is used to scrape off the fluid material that has not had time to drip on the inner wall of the heating device body. When more fluid materials are gathered, they flow down quickly under the action of gravity.

[0019] Furthermore, the surfaces of the heating device body, the first stirring paddle, the second stirring paddle, the third stirring paddle, the first intercepting plate and the second intercepting plate are all coated with a protective coating, and the protective coating is a high-temperature resistant nano coating.

[0020] By adopting the above technical solution and providing a protective coating, the above components can be effectively protected, ensuring that they can be used for a relatively long time in a high temperature and friction environment.

[0021] Furthermore, both the feed pipe and the discharge pipe are provided with solenoid valves.

[0022] By adopting the above technical solution, the opening or closing of the feed pipe and the discharge pipe can be controlled by the solenoid valve.

[0023] Furthermore, the heating device body, the solenoid valve and the servo motor are all connected to an external controller.

[0024] By adopting the above technical solution, the external controller can effectively control the operation process of the heating device body, the solenoid valve and the servo motor, making the operation of the entire device more automated.

[0025] In summary, the utility model mainly has the following beneficial effects:

[0026] 1. The utility model sets a first interception plate and a second interception plate. When PET particles are put into the main body of the heating device, they are first intercepted by the first interception plate. PET particles with a size smaller than the first through hole will pass through the first through hole and reach the second interception plate. PET particles with a size smaller than the second through hole will continue to pass through the second through hole to reach the bottom layer. In this way, the materials put into the main body of the heating device are heated in layers to be melted. Compared with materials piled together, this method is not prone to overlapping and piling up of PET particles, which makes it difficult for heat to reach unmelted materials, thereby improving work efficiency to a certain extent.

[0027] 2. The utility model arranges a top scraper, a side scraper, a bottom scraper and a protective coating, and utilizes the top scraper, the side scraper and the bottom scraper to scrape off the molten material adhering to the inner wall of the main body of the heating device, the first interception plate and the second interception plate, thereby accelerating the normal dripping process. The protective coating adopts a high-temperature resistant nano-coating, which can not only avoid damage to the inner wall of the main body of the heating device due to scratches caused by the rotation of the scraper, but also prevent the fluid from adhering to the above-mentioned positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0029] Figure 2 This is a bottom-up three-dimensional structural schematic diagram of the utility model;

[0030] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0031] Figure 4 It is a side cross-sectional structural schematic diagram of the utility model.

[0032] In the figure: 1. Heating device body; 2. Feed pipe; 3. Discharge pipe; 4. Solenoid valve; 5. Stirring mechanism; 501. Servo motor; 502. Rotating shaft; 503. First stirring paddle; 504. Second stirring paddle; 505. Third stirring paddle; 6. Intercepting mechanism; 601. First intercepting plate; 602. Second intercepting plate; 603. First through hole; 604. Second through hole; 7. Top scraper; 8. Side scraper; 9. Bottom scraper; 10. Protective coating. DETAILED DESCRIPTION

[0033] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0034] The following describes an embodiment of the utility model based on its overall structure.

[0035] Embodiment 1:

[0036] A heating device for plastic bottle processing raw materials, such as Figure 1-Figure 4As shown, it includes a heating device body 1, a feed pipe 2 and a discharge pipe 3. The interior of the heating device body 1 is provided with a stirring mechanism 5 and an intercepting mechanism 6. The stirring mechanism 5 includes a servo motor 501. The output end of the servo motor 501 is provided with a rotating shaft 502. The rotating shaft 502 is provided with a first stirring paddle 503, a second stirring paddle 504 and a third stirring paddle 505; the intercepting mechanism 6 includes a first intercepting plate 601 and a second intercepting plate 602. The first intercepting plate 601 is provided with a first through hole 603, and the second intercepting plate 602 is provided with a second through hole 604. By using the intercepting mechanism 6, materials of different sizes are intercepted in different spaces, and all materials will not be piled up together due to too much material being put in, which makes it difficult for heat to be transmitted to the middle. The material affects the working efficiency of the heating device body 1. Even if the size of this batch of materials is consistent, after being intercepted by the first interception plate 601, the PET particles that first come into contact with the high temperature are heated by the heating device body 1 and stirred by the first stirring paddle 503. As the heating time increases, the PET particles that first come into contact with the high temperature become smaller in volume due to melting. When the volume is smaller than the first through hole 603, they pass through the first through hole 603 smoothly and arrive at the second interception plate 602. As the heating process continues and the stirring of the corresponding stirring paddle continues, they continue to melt into smaller sizes or even fluids. After the melted material with a smaller volume falls down, it will make room for materials that will not have time to come into contact with high temperature in the future, making it convenient for them to come into contact with high temperature. The layered heating method can improve the heating efficiency to a certain extent.

[0037] See also Figure 3 , Figure 4 The servo motor 501 is fixedly connected to the rotating shaft 502, and the rotating shaft 502 is fixedly connected to the first stirring paddle 503, the second stirring paddle 504 and the third stirring paddle 505. When the servo motor 501 is started, it drives the rotating shaft 502 fixedly connected thereto to rotate, thereby causing the first stirring paddle 503, the second stirring paddle 504 and the third stirring paddle 505 rotatably connected to the rotating shaft 502 to rotate at the same time. The rotation of the stirring paddle stirs the materials at the corresponding positions inside the heating device body 1, changes its position, and thereby changes the possibility of the materials at different positions being exposed to high temperature.

[0038] See also Figure 3 , Figure 4The rotating shaft 502 is rotatably connected to the first intercepting plate 601 and the second intercepting plate 602. The first intercepting plate 601 and the second intercepting plate 602 are fixedly connected to the inner wall of the heating device body 1. When the servo motor 501 is started, the rotating shaft 502 will rotate accordingly. The rotational connection relationship between the rotating shaft 502 and the first intercepting plate 601 and the second intercepting plate 602 ensures that the stirring process of each stirring paddle driven by the rotating shaft 502 will not be affected, and the first intercepting plate 601 and the second intercepting plate 602 are fixed to the inner wall of the heating device body 1, ensuring that the two have strong enough supporting force to intercept materials of corresponding sizes and support the normal progress of the heating and stirring process.

[0039] See also Figure 3 , Figure 4 There are multiple first through holes 603 and second through holes 604, and the multiple first through holes 603 and second through holes 604 are distributed in a circle. The arrangement of the multiple first through holes 603 and second through holes 604 allows multiple channels for materials to fall, and the multiple channels can ensure normal falling. The first through holes 603 and second through holes 604 at multiple positions in the circumferential direction allow the material, no matter where it is, to fall from the nearest first through holes 603 and second through holes 604 to the lower layer when it reaches the vicinity of the nearest corresponding through holes as long as the size is smaller than the corresponding through holes.

[0040] See also Figure 3 , Figure 4 The first through hole 603 and the second through hole 604 are both circular structures. The aperture of the first through hole 603 is larger than that of the second through hole 604. The circular structures of the first through hole 603 and the second through hole 604 correspond to spherical PET particles. When the circumference size of the spherical PET particles is smaller than the corresponding through hole, the spherical PET particles can pass through the corresponding through hole to reach the next layer. The first through hole 603 is opened on the first interception plate 601 located on the upper layer, and the second through hole 604 is opened on the second interception plate 602 located on the lower layer. The size settings of the first through hole 603 and the second through hole 604 meet the process of layered heating.

[0041] Embodiment 2:

[0042] See also Figure 3 , Figure 4The top of the first stirring paddle 503, the second stirring paddle 504 and the third stirring paddle 505 are all provided with a top scraper 7, the side of the first stirring paddle 503, the second stirring paddle 504 and the third stirring paddle 505 away from the rotating shaft 502 is provided with a side scraper 8, and the bottom of the first stirring paddle 503, the second stirring paddle 504 and the third stirring paddle 505 is provided with a bottom scraper 9. The setting of each scraper can scrape off the fluid material adhered to the inner wall of the heating device body 1, the first intercepting plate 601 and the second intercepting plate 602 that will not have time to drip. After all the materials are melted into fluid, the fluid is smoothly and quickly scraped off from the inner wall of the heating device body 1, the first intercepting plate 601 and the second intercepting plate 602 to avoid waste of materials. The top scraper 7 of the first stirring paddle 503 and the bottom scraper 9 of the third stirring paddle 505 are set with sharp angles inclined to both sides, so it is not easy for the materials to stay there.

[0043] See also Figure 3 , Figure 4 The side scraper 8 is in contact with the inner wall of the heating device body 1, the bottom scraper 9 of the first stirring paddle 503 and the top scraper 7 of the second stirring paddle 504 are respectively in contact with the top and bottom of the first intercepting plate 601, the bottom scraper 9 of the second stirring paddle 504 and the top scraper 7 of the third stirring paddle 505 are respectively in contact with the top and bottom of the second intercepting plate 602, and the side scraper 8 is used to scrape off the fluid material that has not yet dripped on the inner wall of the heating device body 1. When more fluid materials are gathered Afterwards, it quickly flows down under the action of gravity, and the bottom scraper 9 of the first stirring paddle 503 smoothly scrapes the fluid material on the top of the first intercepting plate 601, causing it to drip along the nearest first through hole 603. The top scraper 7 and bottom scraper 9 of the second stirring paddle 504 scrape the remaining fluid material at the bottom of the first intercepting plate 601 and the top of the second intercepting plate 602 respectively. The top scraper 7 of the third stirring paddle 505 is used to scrape off the remaining fluid material at the bottom of the top scraper 7 of the third stirring paddle 505.

[0044] See also Figure 3 , Figure 4 The surfaces of the heating device body 1, the first stirring paddle 503, the second stirring paddle 504, the third stirring paddle 505, the first intercepting plate 601 and the second intercepting plate 602 are all coated with a protective coating 10. The protective coating 10 adopts a high-temperature resistant nano coating. The setting of the protective coating 10 can effectively protect the above-mentioned components to ensure that they can be used for a relatively long time in a high temperature and friction environment. The protective coating 10 selects a high-temperature resistant nano coating. In addition to having the effects of high temperature resistance and friction resistance, the gaps between the particles on the coating surface are small, and it is not easy to hide dirt and grime. The fluid material is not easy to adhere and can drip smoothly under the action of gravity, which can not only avoid material waste, but also facilitate keeping the above-mentioned components clean.

[0045] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The feed pipe 2 and the discharge pipe 3 are both provided with an electromagnetic valve 4, which can control the opening or closing of the feed pipe 2 and the discharge pipe 3, so as to effectively control the feeding and discharging process of the material, ensuring that the feeding and discharging process can meet the needs more quickly and accurately.

[0046] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The heating device body 1, the solenoid valve 4 and the servo motor 501 are all connected to the external controller. The external controller effectively controls the operation process of the heating device body 1, the solenoid valve 4 and the servo motor 501, which can make the operation of the entire device more automated, the response time between the electrical components is shorter, the control is more precise, and the operation efficiency is higher.

[0047] The implementation principle of the utility model is as follows: first, the heating device body 1 is preheated in advance through an external controller, and the solenoid valve 4 of the feed pipe 2 is controlled to open, so that all the plastic raw materials to be melted are put into the heating device body 1. After the plastic raw materials enter, they are first intercepted by the first interception plate 601. If there are materials with a size smaller than the first through hole 603, they can smoothly pass through the first through hole 603 and fall on the second interception plate 602. If there are materials with a size smaller than the second through hole 604 on the second interception plate 602, they can continue to pass through the second through hole 604 and fall at a lower level; secondly, the servo motor 501 is started under the control of the controller, so that the rotating shaft 502 rotates, thereby driving the first stirring paddle 503, the second stirring paddle 504 and the second stirring paddle 505. The second stirring paddle 504 and the third stirring paddle 505 rotate simultaneously to stir the materials in the corresponding areas so that they can better contact the high temperature generated by the heating device body 1. When the material intercepted by the first intercepting plate 601 becomes molten and smaller in size than the first through hole 603 as the heating time increases, it will pass through the first through hole 603 and fall on the second intercepting plate 602. Similarly, the volume of the material intercepted on the second intercepting plate 602 becomes smaller and passes through the second through hole 604 and falls on the lower layer, until all the plastic raw materials are molten due to the operation of the stirring paddle and the high temperature of the heating device body 1, and the solenoid valve 4 on the discharge pipe 3 is controlled by an external controller to open, and the molten fluid is injected from the feed inlet of the next process.

[0048] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0049] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A heating device for plastic bottle processing raw materials, characterized in that: The invention comprises a heating device body (1), a feeding pipe (2) and a discharging pipe (3); a stirring mechanism (5) and an intercepting mechanism (6) are arranged inside the heating device body (1); the stirring mechanism (5) comprises a servo motor (501); a rotating shaft (502) is arranged at the output end of the servo motor (501); a first stirring paddle (503), a second stirring paddle (504) and a third stirring paddle (505) are arranged on the rotating shaft (502); The interception mechanism (6) comprises a first interception plate (601) and a second interception plate (602); the first interception plate (601) is provided with a first through hole (603), and the second interception plate (602) is provided with a second through hole (604).

2. The heating device for plastic bottle processing raw materials according to claim 1, characterized in that: The servo motor (501) is fixedly connected to the rotating shaft (502), and the rotating shaft (502) is fixedly connected to the first stirring paddle (503), the second stirring paddle (504) and the third stirring paddle (505).

3. The heating device for plastic bottle processing raw materials according to claim 1, characterized in that: The rotating shaft (502) is rotatably connected to the first intercepting plate (601) and the second intercepting plate (602), and the first intercepting plate (601) and the second intercepting plate (602) are fixedly connected to the inner wall of the heating device body (1).

4. The heating device for plastic bottle processing raw materials according to claim 1, characterized in that: A plurality of the first through holes (603) and the second through holes (604) are provided, and the plurality of the first through holes (603) and the second through holes (604) are distributed in a circular pattern.

5. The heating device for plastic bottle processing raw materials according to claim 1, characterized in that: The first through hole (603) and the second through hole (604) are both circular structures, and the aperture of the first through hole (603) is larger than the aperture of the second through hole (604).

6. The heating device for plastic bottle processing raw materials according to claim 1, characterized in that: The top of each of the first stirring paddle (503), the second stirring paddle (504) and the third stirring paddle (505) is provided with a top scraper (7); the side of each of the first stirring paddle (503), the second stirring paddle (504) and the third stirring paddle (505) away from the rotating shaft (502) is provided with a side scraper (8); and the bottom of each of the first stirring paddle (503), the second stirring paddle (504) and the third stirring paddle (505) is provided with a bottom scraper (9).

7. The heating device for plastic bottle processing raw materials according to claim 6, characterized in that: The side scraper (8) abuts against the inner wall of the heating device body (1); the bottom scraper (9) of the first stirring paddle (503) and the top scraper (7) of the second stirring paddle (504) abut against the top and bottom of the first intercepting plate (601) respectively; the bottom scraper (9) of the second stirring paddle (504) and the top scraper (7) of the third stirring paddle (505) abut against the top and bottom of the second intercepting plate (602) respectively.

8. The heating device for plastic bottle processing raw materials according to claim 1, characterized in that: The surfaces of the heating device body (1), the first stirring paddle (503), the second stirring paddle (504), the third stirring paddle (505), the first intercepting plate (601) and the second intercepting plate (602) are all coated with a protective coating (10), and the protective coating (10) is a high-temperature resistant nano coating.

9. The heating device for plastic bottle processing raw materials according to claim 1, characterized in that: The feed pipe (2) and the discharge pipe (3) are both provided with solenoid valves (4).

10. The heating device for plastic bottle processing raw materials according to claim 1, characterized in that: The heating device body (1), the solenoid valve (4) and the servo motor (501) are all connected to an external controller.

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