A plastic product drying device

Abstract

The utility model relates to the technical field of plastic product processing, especially relates to a plastic product drying device, its technical scheme includes: drying box, the side end surface embedding fixed of drying box has the air inlet pipe, installs the electric heating tube in the air inlet pipe, is equipped with the tray in the drying box, the fixed installation of filter screen and coil pipe is in the air inlet pipe, the top end surface of drying box is installed with exhaust pump, is provided with the exhaust pipe and the extraction pipe on the exhaust pump, the inner wall bottom end surface of drying box is installed with guide rod and hydraulic rod, the air inlet pipe communicates with drying box gas, installs the air inlet fan in the air inlet pipe, the one end of extraction pipe deviating from exhaust pump embeds fixed in drying box, the exhaust pump communicates with drying box gas through extraction pipe, the utility model satisfies the plastic product drying, avoids moisture storage in the inside when drying, and can recycle and utilize the heat generated to dry, thereby reduces the waste of heat.

Description

Technical Field

[0001] This utility model relates to the field of plastic product processing technology, and specifically to a plastic product drying device. Background Technology

[0002] Plastic products are made from plastic as a base material through various molding processes such as injection molding and vacuum forming. They are widely used in various products in both daily life and industrial fields. As a synthetic polymer material with plasticity, plastic often requires the assistance of special solutions during the product manufacturing process to achieve precise shaping. This inevitably leaves moisture residue on the surface of the molded plastic products. To ensure product quality and performance, drying is an essential and critical step.

[0003] A search revealed that patent CN220169798U discloses a plastic product drying device. While this device includes a collection system for water leaking from the plastic products during drying, preventing moisture accumulation inside the treatment chamber and thus improving drying efficiency, it still suffers from significant technical problems. Firstly, after filtration and collection, residual water fails to drain effectively, leading to secondary water accumulation inside the device. As the drying process continues, this accumulated water evaporates upon heating, interfering with the drying process, reducing drying efficiency, causing unstable product quality, and potentially resulting in uneven local humidity. Secondly, the high-temperature gases generated during drying contain a large amount of waste heat, which traditional devices often directly release into the environment, resulting in significant energy waste, increased production costs, and contradicting the green production principles of energy conservation and emission reduction. Therefore, there is an urgent need for technical improvements and optimized design of existing plastic product drying devices. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a plastic product drying device, which solves the problems mentioned in the background art.

[0005] The solution to the above-mentioned technical problems provided by this utility model is as follows:

[0006] A plastic product drying device includes a drying box, an air inlet pipe is embedded and fixed on the side end face of the drying box, an electric heating tube is installed in the air inlet pipe, and a tray is provided inside the drying box.

[0007] A filter and a coil are fixedly installed inside the air intake pipe;

[0008] An exhaust pump is installed on the top surface of the drying oven, and the exhaust pump is equipped with a discharge pipe and an extraction pipe. A guide rod and a hydraulic rod are installed on the bottom surface of the inner wall of the drying oven.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the air inlet pipe is connected to the gas in the drying chamber, and an air intake fan is installed inside the air inlet pipe.

[0011] The beneficial effects of adopting the above-mentioned further solutions are:

[0012] External air is introduced by an intake fan to ensure a continuous and stable supply of air for drying; combined with electric heating elements, a controllable hot air source is formed. The gas connection design allows hot air to enter the drying chamber evenly for drying operations.

[0013] Furthermore, a cover plate is installed on the front end face of the drying box via a hinge, and casters are installed on the bottom end face of the drying box.

[0014] The beneficial effects of adopting the above-mentioned further solutions are:

[0015] Cover plate: The hinge structure enables quick opening and closing, facilitating the placement and removal of plastic products, while the sealed cavity reduces heat loss; Casters: Enhance the mobility of the device, adapting to the needs of workshop production line adjustments or maintenance, and improving the practicality of the equipment.

[0016] Furthermore, the end of the extraction pipe facing away from the exhaust pump is embedded and fixed inside the drying chamber, and the exhaust pump is connected to the gas in the drying chamber through the extraction pipe.

[0017] The beneficial effects of adopting the above-mentioned further solutions are:

[0018] The extraction pipe is directly embedded inside the drying chamber, allowing the exhaust pump to draw out hot, humid waste gas. This design maintains a negative pressure environment inside the chamber, accelerating moisture removal, preventing water vapor from condensing and flowing back inside, and ensuring drying efficiency.

[0019] Furthermore, the end of the discharge pipe facing away from the exhaust pump passes through the intake pipe and is embedded and fixed inside the coil, and the coil is connected to the exhaust pump gas through the discharge pipe.

[0020] The beneficial effects of adopting the above-mentioned further solutions are:

[0021] The exhaust pump draws in waste gas and delivers it to the coil through the discharge pipe, using the waste heat of the waste gas to preheat the newly entering air (heat recovery). This reduces the heating energy consumption of the electric heating element and meets energy conservation and environmental protection requirements.

[0022] Furthermore, an exhaust pipe is embedded at the end of the coil opposite to the discharge pipe, and the exhaust pipe is in communication with the gas in the coil.

[0023] The beneficial effects of adopting the above-mentioned further solutions are:

[0024] The exhaust pipe serves as the final outlet for waste gas, ensuring the orderly discharge of low-temperature waste gas after heat recovery.

[0025] Furthermore, the output end of the hydraulic rod is installed on the bottom surface of the tray, and a limit frame is fixedly installed on the bottom surface of the tray, with the limit frame slidably sleeved inside the guide rod.

[0026] The beneficial effects of adopting the above-mentioned further solutions are:

[0027] Hydraulic rods: control the height of the pallet, ensuring that plastic products avoid the high-temperature air inlet during the preheating stage (low position) and are only gently preheated by convection inside the chamber; during the drying stage (high position), they are in direct contact with hot air, avoiding deformation and cracking caused by thermal shock; limit frames and guide rods: ensure that the pallet is lifted vertically without deviation, guaranteeing load-bearing stability.

[0028] This utility model provides a drying device for plastic products. It has the following beneficial effects:

[0029] This device constructs a highly efficient, energy-saving, and stable drying system through the coordinated operation of its various components. The intake fan and electric heating tube work together to form a stable and controllable hot air source, providing sufficient heat energy for the drying process. The combination of the exhaust pump, extraction pipe, and discharge pipe not only enables the rapid discharge of humid and hot exhaust gas, preventing water vapor from accumulating inside, but also utilizes the coil for waste heat recovery, using the heat from the exhaust gas to preheat the newly entering air, reducing the energy consumption of the electric heating tube and improving drying efficiency.

[0030] The hydraulic rod controls the height of the tray, and the combination of the limit frame and guide rod ensures that the tray rises and falls smoothly, so that the plastic products are at different heights during the preheating and drying stages. This can avoid problems such as deformation and cracking caused by high temperature thermal shock, and ensure that the products are fully exposed to hot air during the drying stage, thus ensuring uniform and reliable drying effect and effectively improving the drying quality and yield of plastic products. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0032] In the attached diagram:

[0033] Figure 1 This is a side view of the present invention.

[0034] Figure 2 This is a schematic diagram of the internal structure of the present invention from the front view.

[0035] Figure 3 This is a cross-sectional view of the air intake pipe of this utility model.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. Drying oven; 2. Air inlet pipe; 201. Filter screen; 202. Exhaust pipe; 203. Coil; 204. Air inlet fan; 205. Electric heating element; 3. Exhaust pump; 301. Discharge pipe; 302. Extraction pipe; 4. Tray; 401. Limiting frame; 402. Guide rod; 403. Hydraulic rod. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see Figures 1 to 3 As shown, the embodiments provided by this utility model are as follows:

[0040] Example 1

[0041] A plastic product drying device includes a drying box 1, an air inlet pipe 2 is embedded and fixed on the side end face of the drying box 1, an electric heating tube 205 is installed in the air inlet pipe 2, and a tray 4 is provided inside the drying box 1.

[0042] A filter 201 and a coil 203 are fixedly installed inside the intake pipe 2;

[0043] An exhaust pump 3 is installed on the top surface of the drying oven 1. The exhaust pump 3 is equipped with a discharge pipe 301 and an extraction pipe 302. A guide rod 402 and a hydraulic rod 403 are installed on the bottom surface of the inner wall of the drying oven 1.

[0044] The air inlet pipe 2 is in gas communication with the drying chamber 1. An air intake fan 204 is installed inside the air inlet pipe 2 to introduce external air and ensure a continuous and stable supply of drying airflow. Combined with heating from the electric heating element 205, this forms a controllable hot air source. The gas communication design allows hot air to enter the drying chamber 1 evenly for drying operations.

[0045] The front end of the drying oven 1 is fitted with a cover plate via a hinge, and the bottom end of the drying oven 1 is fitted with casters. The cover plate: the hinge structure enables quick opening and closing, facilitating the placement and removal of plastic products, while also sealing the cavity to reduce heat loss; the casters: enhance the mobility of the device, adapt to the needs of workshop production line adjustments or maintenance, and improve the practicality of the equipment.

[0046] The end of the extraction pipe 302 facing away from the exhaust pump 3 is embedded and fixed inside the drying chamber 1. The exhaust pump 3 is connected to the drying chamber 1 through the extraction pipe 302. The extraction pipe 302 is directly embedded inside the drying chamber 1, allowing the exhaust pump 3 to extract humid and hot exhaust gas. This design maintains a negative pressure environment inside the chamber, accelerates the discharge of moisture, prevents water vapor from condensing and flowing back inside the chamber, and ensures drying efficiency.

[0047] One end of the exhaust pipe 301, away from the exhaust pump 3, passes through the intake pipe 2 and is embedded and fixed inside the coil 203. The coil 203 is connected to the exhaust pump 3 via the exhaust pipe 301. The exhaust pump 3 pumps the extracted waste gas to the coil 203 through the exhaust pipe 301, using the waste heat of the waste gas to preheat the newly entering air (heat recovery). This reduces the heating energy consumption of the electric heating element 205, meeting energy conservation and environmental protection requirements.

[0048] An exhaust pipe 202 is embedded at one end of the coil 203 away from the discharge pipe 301. The exhaust pipe 202 is connected to the coil 203 in gas communication. The exhaust pipe 202 serves as the final outlet for exhaust gas, ensuring that the low-temperature exhaust gas after heat recovery is discharged in an orderly manner.

[0049] Example 2

[0050] To preheat plastic products to avoid direct contact with drying hot air, and to allow them to come into contact with hot air only after preheating is complete, for example, such as Figures 1 to 3 As shown, this utility model also includes:

[0051] The output end of the hydraulic rod 403 is installed on the bottom surface of the tray 4. The bottom surface of the tray 4 is fixedly installed with a limit frame 401. The limit frame 401 is slidably sleeved in the guide rod 402. The hydraulic rod 403 controls the height of the tray 4, so that the plastic products avoid the high-temperature air inlet during the preheating stage (low position) and are only preheated by convection inside the box. During the drying stage (high position), they are in direct contact with hot air, avoiding deformation and cracking caused by thermal shock. The limit frame 401 and the guide rod 402 ensure that the tray 4 is lifted vertically without deviation, ensuring the stability of the load.

[0052] Working principle:

[0053] Personnel place the plastic products to be dried on tray 4. After placement, the air intake fan 204 is activated, drawing outside air into the air intake pipe 2. The air passes through filter screen 201 to remove impurities before entering the drying chamber 1. At this time, the electric heating element 205 starts working, heating the air in the air intake pipe 2 to form a controllable hot air source. The hot air enters the drying chamber 1 evenly through the gas communication channel between the air intake pipe 2 and the drying chamber 1, providing heat for drying the plastic products.

[0054] As the drying process proceeds, hot and humid exhaust gas is generated inside the drying chamber 1. The exhaust pump 3 extracts this exhaust gas from the drying chamber 1 via the extraction pipe 302, which is directly embedded inside the chamber to ensure effective extraction, maintain a negative pressure environment, and accelerate moisture removal. The exhaust pump 3 then transports the extracted exhaust gas to the coil 203 via the discharge pipe 301, utilizing the residual heat to preheat the air newly entering the intake pipe 2, achieving heat recovery. The low-temperature exhaust gas after heat recovery is then discharged systematically through the exhaust pipe 202, which is connected to the gas in the coil 203.

[0055] During the preheating stage, the hydraulic rod 403 controls the tray 4 to descend to a low position, allowing the plastic products to avoid the high-temperature air inlet and only undergo gentle preheating through the convection of hot air within the drying chamber 1, preventing deformation or cracking of the plastic products due to high temperatures. Once the drying stage begins, the hydraulic rod 403 pushes the tray 4 to a high position, allowing the plastic products to directly contact the hot air, ensuring uniform and reliable drying. The limiting frame 401 is slidably fitted within the guide rod 402, ensuring that the tray 4 remains vertically aligned during lifting and lowering, guaranteeing load-bearing stability.

[0056] Operators can quickly open and close the cover on the front side of the drying oven 1 using the hinge structure, facilitating the placement and removal of plastic products. Simultaneously, the closed cover effectively seals the cavity, reducing heat loss. Casters installed on the bottom of the drying oven 1 allow the device to be flexibly moved according to workshop layout, production line adjustments, or equipment maintenance needs, enhancing the equipment's versatility and practicality.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plastic product drying device, comprising a drying chamber (1), wherein an air inlet pipe (2) is embedded and fixed on the side end face of the drying chamber (1), an electric heating element (205) is installed inside the air inlet pipe (2), and a tray (4) is provided inside the drying chamber (1), characterized in that: A filter screen (201) and a coil (203) are fixedly installed inside the air intake pipe (2); An exhaust pump (3) is installed on the top surface of the drying box (1). The exhaust pump (3) is equipped with a discharge pipe (301) and an extraction pipe (302). A guide rod (402) and a hydraulic rod (403) are installed on the bottom surface of the inner wall of the drying box (1).

2. The plastic product drying device according to claim 1, characterized in that: The air inlet pipe (2) is connected to the drying box (1) for gas communication, and an air inlet fan (204) is installed inside the air inlet pipe (2).

3. The device for drying plastic products according to claim 2, characterized in that: The front end of the drying box (1) is fitted with a cover plate via a hinge, and the bottom end of the drying box (1) is fitted with casters.

4. The device for drying plastic products according to claim 1, characterized in that: The end of the extraction pipe (302) facing away from the exhaust pump (3) is embedded and fixed inside the drying box (1), and the exhaust pump (3) is connected to the drying box (1) through the extraction pipe (302).

5. The device for drying plastic articles according to claim 4, characterized in that: The end of the discharge pipe (301) facing away from the exhaust pump (3) passes through the intake pipe (2) and is embedded and fixed in the coil (203). The coil (203) is connected to the exhaust pump (3) through the discharge pipe (301).

6. The device for drying plastic articles according to claim 5, characterized in that: An exhaust pipe (202) is embedded at one end of the coil (203) away from the discharge pipe (301), and the exhaust pipe (202) is in gas communication with the coil (203).

7. The device of claim 1, wherein: The output end of the hydraulic rod (403) is installed on the bottom surface of the tray (4), and a limit frame (401) is fixedly installed on the bottom surface of the tray (4). The limit frame (401) is slidably sleeved in the guide rod (402).

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