Plastic drying machine

Abstract

The utility model discloses a plastic drying machine which comprises a drying cylinder, a feeding port and an air outlet are formed in the top of the drying cylinder, and a water outlet is formed in the bottom of the drying cylinder. The air heater is arranged on one side of the drying cylinder and connected into the drying cylinder; the heat energy recovery module comprises a connecting pipe and a heat exchanger, the heat exchanger comprises a hot fluid inlet, a hot fluid outlet, a cold fluid inlet and a cold fluid outlet, one end of the connecting pipe is communicated with the air outlet, the other end of the connecting pipe is connected with the hot fluid inlet of the heat exchanger, and the cold fluid outlet of the heat exchanger is connected with the air inlet of the air heater; the hot fluid outlet and the cold fluid inlet are communicated with the atmosphere. By introducing the heat energy recovery system, reutilization of heat energy is achieved, the utilization rate of heat energy is increased, and therefore energy consumption is remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic production and processing, in particular to a plastic dryer. Background Art

[0002] The finished product of granulation molding is short columnar plastic particles obtained after an extruder and a pelletizer. There is often some moisture attached to the surface of the material produced by the granulator, and the raw material needs to be dried. Therefore, a plastic dryer is required to dehydrate and dry the granular material by blowing hot air with a hot air blower.

[0003] The Chinese utility model patent with the publication number of CN216668153U discloses an amino molding compound dehydration and drying device, which realizes rapid drying through a fine mesh shell and an industrial hot air blower, and conveys and exports the dried material through a guide pipe.

[0004] In view of the above related technologies, the inventor believes that there are the following defects: After the hot air inside the drying cylinder passes through the drying operation, it is released through the feed inlet. There is still a large amount of heat in the hot air, resulting in high energy consumption and low thermal energy utilization rate. Summary of the Utility Model

[0005] The utility model aims to solve at least one of the problems in the related technologies to some extent. For this reason, one of the purposes of the utility model is to provide a plastic dryer, which introduces a heat energy recovery system to realize the reuse of heat energy, improves the utilization rate of heat energy, and thus significantly reduces energy consumption.

[0006] A plastic dryer, the plastic dryer includes:

[0007] A drying cylinder, the top of the drying cylinder is provided with a feed inlet and an air outlet, and the bottom is provided with a water outlet;

[0008] A hot air blower, the hot air blower is arranged on one side of the drying cylinder and connected to the inside of the drying cylinder;

[0009] A heat energy recovery module, the heat energy recovery module includes a connecting pipe and a heat exchanger. The heat exchanger includes a hot fluid inlet, a hot fluid outlet, a cold fluid inlet and a cold fluid outlet. One end of the connecting pipe communicates with the air outlet, and the other end is connected to the hot fluid inlet of the heat exchanger. The cold fluid outlet of the heat exchanger is connected to the air inlet of the hot air blower, and the hot fluid outlet and the cold fluid inlet are both communicated with the atmosphere.

[0010] Further, the heat energy recovery module further includes a preheater, and the preheater is connected between the heat exchanger and the hot air blower.

[0011] Further, the heat energy recovery module further includes a filter, and the filter is connected to the hot fluid outlet.

[0012] Further, the heat exchanger, the preheater and the hot air blower are stacked in sequence in the vertical direction.

[0013] Further, the hot air blower is also provided with a three-way pipe. One end inlet of the three-way pipe is connected to the air outlet of the preheater, the other end inlet communicates with the atmosphere, the outlet of the three-way pipe is connected to the hot air blower, and a switch is arranged at the end inlet communicating with the atmosphere.

[0014] Further, the top surface of the drying cylinder is a concave arc surface, and the feed inlet is arranged at the center of the top surface.

[0015] Further, the number of the air outlets provided on the drying cylinder is at least two. At least two of the air outlets are arranged at intervals on the circumferential side of the concave arc surface. The ports of the connecting pipes are at least two, and the connecting pipes are all communicated with at least two of the air outlets.

[0016] Further, the plastic dryer further includes a connecting plate and a support plate. The connecting plate is connected to the outer side wall of the drying cylinder, the support plate is connected to the connecting plate in the horizontal direction, and the heat exchanger is placed on the support plate.

[0017] Further, feet are arranged at the bottom of the heat exchanger, and the feet are connected to the support plate.

[0018] Further, a supporting foot block is fixedly connected to the bottom of the drying cylinder.

[0019] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:

[0020] In the present application, by providing a heat energy recovery module including a connecting pipe and a heat exchanger, the heat exchanger includes a hot fluid inlet, a hot fluid outlet, a cold fluid inlet and a cold fluid outlet. One end of the connecting pipe communicates with the air outlet, the other end is connected to the hot fluid inlet of the heat exchanger, and the cold fluid outlet of the heat exchanger is connected to the air inlet of the hot air blower. One end of the connecting pipe is communicated with the air outlet, ensuring the effective recovery of heat energy. The other end is connected to the hot fluid inlet of the heat exchanger, enabling the hot fluid to smoothly enter the heat exchanger for the heat exchange process. In addition, the cold fluid outlet of the heat exchanger is connected to the air inlet of the hot air blower, ensuring that the cold fluid can smoothly enter the hot air blower after heat exchange, further improving the energy efficiency of the overall system. Through this design, the hot air after drying is recycled for heat again, which not only improves the utilization rate of heat energy, realizes efficient energy utilization, but also optimizes the operation efficiency of the entire system. Description of the Drawings

[0021] The accompanying drawings here are incorporated into the description and form a part of this description, showing embodiments consistent with the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0022] To more clearly illustrate the technical solutions in the embodiments of the present utility model or in the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] In the accompanying drawings:

[0024] Figure 1 is a schematic structural diagram of an embodiment of a plastic dryer of the present application;

[0025] Figure 2 is a schematic structural diagram of a heat exchanger in the plastic dryer of the present application.

[0026] Reference numerals in the drawings: 1, a plastic dryer; 10, a drying cylinder; 11, a feed inlet; 13, an air outlet; 15, a water outlet; 30, a hot air blower; 31, a three-way pipe; 33, a switch; 50, a heat energy recovery module; 51, a connecting pipe; 53, a heat exchanger; 531, a hot fluid inlet; 532, a hot fluid outlet; 533, a cold fluid inlet; 534, a cold fluid outlet; 535, a support leg; 55, a preheater; 57, a filter; 60, a connecting plate; 70, a support plate. Detailed implementation manners

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] As Figure 1 、 Figure 2 shown, a plastic dryer 1 provided by the present application includes:

[0030] A drying cylinder 10, with a feed inlet 11 and an air outlet 13 opened at the top of the drying cylinder 10, and a water outlet 15 opened at the bottom.

[0031] The hot air blower 30 is arranged on one side of the drying cylinder 10 and is connected to the inside of the drying cylinder 10;

[0032] The heat energy recovery module 50 includes a connecting pipe 51 and a heat exchanger 53. The heat exchanger 53 includes a hot fluid inlet 531, a hot fluid outlet 532, a cold fluid inlet 533, and a cold fluid outlet 534. One end of the connecting pipe 51 communicates with the air outlet 13, and the other end is connected to the hot fluid inlet 531 of the heat exchanger 53. The cold fluid outlet 534 of the heat exchanger 53 is connected to the air inlet of the hot air blower 30, and both the hot fluid outlet 532 and the cold fluid inlet 533 communicate with the atmosphere.

[0033] The drying cylinder 10 is one of the core components of the entire dryer. The top of the drying cylinder 10 is designed with a feed inlet 11 and an air outlet 13. The feed inlet 11 is used to send the plastic materials to be dried into the drying cylinder 10, and the air outlet 13 is used to discharge the humid hot air generated during the drying process. In addition, a water outlet 15 is provided at the bottom of the drying cylinder 10 to discharge the condensed water or other liquids generated during the drying process, ensuring a dry environment inside the drying cylinder 10.

[0034] Secondly, the hot air blower 30 is another important component of the dryer. The hot air blower 30 is arranged on one side of the drying cylinder 10 and is connected to the inside of the drying cylinder 10 through a pipeline. The main function of the hot air blower 30 is to provide hot air to accelerate the drying speed of the plastic materials during the drying process. Through the heating of the hot air blower 30, the temperature inside the drying cylinder 10 is increased, thereby effectively removing the moisture in the plastic materials.

[0035] The heat energy recovery module 50 includes two main parts: a connecting pipe 51 and a heat exchanger 53. The design of the heat exchanger 53 is very ingenious. It has four interfaces: a hot fluid inlet 531, a hot fluid outlet 532, a cold fluid inlet 533, and a cold fluid outlet 534. One end of the connecting pipe 51 is connected to the air outlet 13 of the drying cylinder 10, and the other end is connected to the hot fluid inlet 531 of the heat exchanger 53. In this way, the hot air generated during the drying process is introduced into the heat exchanger 53, thereby realizing the recovery and utilization of heat energy. The cold fluid outlet 534 of the heat exchanger 53 is connected to the air inlet of the hot air blower 30, so that the recovered heat energy can be used to heat the fresh air entering the hot air blower 30, further improving the drying efficiency. Both the hot fluid outlet 532 and the cold fluid inlet 533 communicate with the atmosphere, ensuring the smooth flow of the hot fluid and the cold fluid inside the heat exchanger 53, thereby realizing efficient heat energy recovery.

[0036] In summary, through the organic combination of the drying cylinder 10, the hot air blower 30, and the heat energy recovery module 50, the plastic dryer provided by this application achieves efficient drying of plastic materials. At the same time, through heat energy recovery technology, it improves the energy utilization efficiency during the drying process, reduces energy consumption, and has significant economic benefits and environmental protection value.

[0037] Furthermore, the heat energy recovery module 50 further includes a preheater 55, and the preheater 55 is connected between the heat exchanger 53 and the hot air blower 30.

[0038] The heat energy recovery module 50 not only includes the main heat exchanger 53 but also is equipped with an important component, the preheater 55. The function of the preheater 55 is to further utilize the heat energy processed by the heat exchanger 53. Through its position connected between the heat exchanger 53 and the hot air blower 30, it ensures the efficient transfer of heat energy. The design of the preheater 55 enables it to effectively absorb the waste heat discharged from the heat exchanger 53 and transfer it to the hot air blower 30, thereby achieving the maximum recovery and utilization of heat energy in the system. Such a design not only improves the energy efficiency of the overall system but also reduces energy waste, ensuring the efficient operation of the heat energy recovery module 50.

[0039] Furthermore, the heat energy recovery module 50 further includes a filter 57, and the filter 57 is connected to the hot fluid outlet 532.

[0040] The heat energy recovery module 50 not only includes the core heat exchange equipment but also is equipped with a special filter 57 component. These filters 57 are closely connected to the outlet end of the hot fluid to ensure that the gas discharged into the atmosphere is clean gas after heat energy recovery. The function of the filter 57 is to remove impurities and particulate matter in the hot fluid to prevent these pollutants from entering the atmosphere. Filters 57 can also be located at the inlet end of the hot fluid 531 to prevent these pollutants from entering the heat exchanger 53, thereby extending the service life of the equipment and maintaining efficient heat energy recovery performance. Through this design, the environmental protection of the heat energy recovery module 50 can be improved, and the heat energy recovery module 50 can operate more stably and reliably, ensuring the overall efficiency and economy of the system.

[0041] Furthermore, the heat exchanger 53, the preheater 55, and the hot air blower 30 are sequentially stacked in the vertical direction.

[0042] The heat exchanger 53, the preheater 55, and the hot air blower 30 are designed to be stacked in sequence along the vertical direction, forming a compact vertical structure. This layout makes the equipment more efficient in space utilization and also facilitates maintenance and repair. The heat exchanger 53 is located at the topmost layer, near the air outlet 13 of the drying cylinder 10, and is responsible for exchanging heat between hot and cold fluids to reach the required temperature. The preheater 55 follows closely, further increasing the temperature of the fluid to ensure it reaches the predetermined temperature range before entering the hot air blower 30. The hot air blower 30 is located at the bottommost layer, heating the fluid to the final required temperature through heating elements and transferring the heat energy back to the drying cylinder 10. Through this stacked arrangement, the entire system achieves an efficient and stable heat transfer process.

[0043] Furthermore, the hot air blower 30 is also provided with a three-way pipe 31. One end inlet of the three-way pipe 31 is connected to the air outlet 13 of the preheater 55, the other end inlet communicates with the atmosphere, the outlet of the three-way pipe 31 is connected to the hot air blower 30, and a switch 33 is provided at the end inlet communicating with the atmosphere.

[0044] The hot air blower 30 is also specially equipped with the design of the three-way pipe 31, which has multiple functions. Specifically, one end inlet of the three-way pipe 31 is connected to the air outlet 13 of the preheater 55, ensuring the smooth transfer of hot air. The other end inlet is directly connected to the atmosphere, and this design can effectively adjust the working environment of the hot air blower 30 to ensure the normal operation of the equipment under different conditions. The outlet part of the three-way pipe 31 is directly connected to the inlet of the hot air blower 30, enabling the hot air to smoothly enter the hot air blower 30 for heating treatment.

[0045] In addition, a switch 33 device is specially provided at the end inlet communicating with the atmosphere. The main function of this switch 33 is to control the inflow of air, thereby achieving fine adjustment of the working state of the hot air blower 30. Through this switch 33, the operator can flexibly control the inflow of air according to actual needs to achieve the best heating effect. Such a design not only improves the usage efficiency of the hot air blower 30 but also enhances the flexibility and adaptability of the equipment, enabling it to better meet various different usage requirements.

[0046] Furthermore, the top surface of the drying cylinder 10 is a concave arc surface, and the feed inlet 11 is provided at the center of the top surface.

[0047] The top surface of the drying cylinder 10 is designed as a sunken arc surface, and such a structure helps the materials to be evenly distributed during the drying process. The feed inlet 11 is cleverly arranged at the exact center of the top surface of the drying cylinder 10 to ensure that the materials can smoothly enter the interior of the drying cylinder 10, thereby improving the drying efficiency and effect.

[0048] Further, the drying cylinder 10 is provided with at least two air outlets 13, the at least two air outlets 13 are arranged at intervals on the circumferential side of the concave arc surface, the ports of the connecting pipes 51 are at least two, and the connecting pipes 51 are all communicated with the at least two air outlets 13.

[0049] In the design of the drying cylinder 10, the number of the air outlets 13 is set to be at least two. The two air outlets 13 are arranged at intervals on the circumferential side of the concave arc surface of the drying cylinder 10 to ensure that the hot air can be evenly distributed in the entire drying area. In addition, the ports of the connecting pipes 51 are also designed to be at least two, and the two ports are respectively connected to the at least two air outlets 13. Such a design enables the drying cylinder 10 to more efficiently transport the hot air to each area, thereby improving the drying efficiency and effect, and can also improve the hot air outlet efficiency.

[0050] Further, the plastic dryer further includes a connecting plate 60 and a support plate 70. The connecting plate 60 is connected to the outer side wall of the drying cylinder 10, the support plate 70 is horizontally connected to the connecting plate 60, and the heat exchanger 53 is placed on the support plate 70.

[0051] In the design of the plastic dryer, in addition to the main drying cylinder 10 part, it also includes some other important structural components. Specifically, these components include a connecting plate 60 and a support plate 70. The function of the connecting plate 60 is to be connected to the outer side wall of the drying cylinder 10 to ensure that the heat exchanger 53 can be firmly fixed to the main structure of the drying cylinder 10. The support plate 70 is horizontally connected to the connecting plate 60 to provide necessary support and stability for the entire heat exchanger 53. In addition, the heat exchanger 53 is placed on the support plate 70, so that the heat energy can be effectively transferred and exchanged, thereby improving the drying efficiency.

[0052] Further, the bottom of the heat exchanger 53 is provided with support feet 535, and the support feet 535 are connected to the support plate 70.

[0053] Several support feet 535 are specially designed at the bottom of the heat exchanger 53, and these support feet 535 are firmly connected and fixed to the support plate 70. The support plate 70 itself is also carefully designed to ensure the stability and reliability of the entire heat exchanger 53 system. In this way, the heat exchanger 53 can effectively bear various loads during the working process and maintain its precise alignment and positioning.

[0054] Further, a support foot block is fixedly connected to the bottom of the drying cylinder 10.

[0055] The bottom of the drying cylinder 10 is firmly fixed with several supporting foot blocks by means of welding or bolt connection. These supporting foot blocks are usually made of metal materials and have sufficient strength and stability to ensure that the drying cylinder 10 remains stable during operation. In addition, anti-slip pads or rubber pads are sometimes installed at the bottom of the supporting foot blocks to prevent the drying cylinder 10 from sliding or vibrating during operation, thereby improving the stability and safety of the equipment.

[0056] It can be understood that the above embodiments only express the preferred embodiments of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. A plastic drying machine, characterized in that: include: A drying drum, wherein a feed inlet and an air outlet are provided at the top of the drying drum, and a water outlet is provided at the bottom; A hot air blower, which is arranged at one side of the drying cylinder and connected to the drying cylinder; A heat energy recovery module, the heat energy recovery module includes a connecting pipe, a heat exchanger and a preheater, the heat exchanger includes a hot fluid inlet, a hot fluid outlet, a cold fluid inlet and a cold fluid outlet, one end of the connecting pipe is connected to the air outlet, and the other end is connected to the hot fluid inlet of the heat exchanger, the cold fluid outlet of the heat exchanger is connected to the air inlet of the hot air blower, the hot fluid outlet and the cold fluid inlet are both connected to the atmosphere, and the preheater is connected between the heat exchanger and the hot air blower.

2. A plastic drying machine according to claim 1, characterized in that: The heat recovery module further includes a filter connected to the hot fluid outlet.

3. A plastic drying machine according to claim 2, characterized in that: The heat exchanger, the preheater and the hot air blower are stacked in sequence along the vertical direction.

4. A plastic drying machine according to any one of claims 1 to 3, characterized in that: The hot air blower is also provided with a three-way pipe, one end of the three-way pipe is connected to the air outlet of the preheater, and the other end of the three-way pipe is connected to the atmosphere. The outlet of the three-way pipe is connected to the hot air blower, and a switch is provided on the end of the three-way pipe connected to the atmosphere.

5. A plastic drying machine according to any one of claims 1 to 3, characterized in that: The top surface of the drying cylinder is a concave arc surface, and the feed inlet is arranged at the center of the top surface.

6. A plastic drying machine according to claim 5, characterized in that: The drying drum is provided with at least two air outlets, at least two of which are spaced apart on the circumference of the concave arc surface, the connecting pipe has at least two ports, and the connecting pipes are connected to at least two of the air outlets.

7. A plastic drying machine according to any one of claims 1 to 3, characterized in that: The plastic drying machine further comprises a connecting plate and a supporting plate, wherein the connecting plate is connected to the outer side wall of the drying cylinder, the supporting plate is connected to the connecting plate in a horizontal direction, and the heat exchanger is placed on the supporting plate.

8. A plastic drying machine according to claim 7, characterized in that: The bottom of the heat exchanger is provided with supporting feet, and the supporting feet are connected to the supporting plate.

9. A plastic drying machine according to any one of claims 1 to 3, characterized in that: The bottom of the drying cylinder is fixedly connected with a supporting foot block.

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