EPS foam plastic product drying device
By using a steam heat exchanger and a heat exchanger combined with the design of hot air inlet and outlet pipes in the EPS foam product drying device, the problems of low drying efficiency and high cost in the prior art are solved, and a fast and uniform drying effect is achieved.
Patent Information
- Application Number
- CN202422343904.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The existing EPS foam plastic product drying devices have problems such as low drying efficiency, high cost and waste of energy, especially in large-area drying chambers, which lead to uneven drying.
The steam heat exchanger and heat exchanger are designed in combination with the hot air inlet pipe and the hot air outlet pipe. The air is dried and heat exchanged through the steam heat exchanger. The hot air circulates in the drying room and filters the water vapor through the steam heat exchanger to ensure that the hot air is dried and then enters the drying room, achieving rapid and even drying.
It realizes rapid and uniform drying in the drying room, reduces drying costs, improves drying quality and speed, and avoids the uneven problem caused by local high temperature of the hot air duct.
Smart Images
Figure CN223199369U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, in particular to an EPS foam product drying device. Background Art
[0002] Expanded Polystyrene (EPS) is a lightweight polymer. It is made by adding a foaming agent to polystyrene resin and heating it to soften it, generating gas to form a rigid closed-cell foam plastic.
[0003] When EPS foam is produced, it needs to be dried and shaped. Generally, a drying room is used. The temperature of the drying room is increased by the heating device in the drying room to dry the EPS foam. This drying method consumes more energy. Specifically, a hot air pipe is usually placed in the drying room. The heating wire is driven by electricity to emit heat. After the air is heated, heat exchange occurs with the EPS foam in the drying room to achieve the drying effect. However, in addition to consuming energy, this drying method cannot quickly discharge the water vapor generated by the heat exchange in the drying room, resulting in poor drying effect. At the same time, the hot air pipe can only produce high-temperature areas in local areas. When the area of the drying room is large, the drying method of the hot air pipe will cause the drying speed in the entire drying room to be faster near the hot air pipe and slower away from the hot air pipe. In order to achieve equal drying speed, more hot air pipes need to be arranged to achieve synchronous drying effect, which leads to increased costs. Utility Model Content
[0004] The purpose of the utility model is to provide an EPS foam product drying device to solve the problems in the prior art that the drying chamber cannot quickly and synchronously dry the products, and the drying efficiency is low, the cost is high, and energy is wasted.
[0005] In order to solve the above problems, the EPS foam product drying device involved in the present invention adopts the following technical solutions:
[0006] The EPS foam product drying device includes a drying chamber and a drying pipeline arranged in the drying chamber, the drying pipeline includes a hot air inlet pipe, a hot air outlet pipe, and a steam heat exchanger, and also includes a heat exchange fan arranged outside the drying chamber, the hot air outlet pipe is connected to the inlet of the steam heat exchanger, the hot air inlet pipe is connected to the inlet of the heat exchange fan, the outlet of the heat exchange fan is connected to the inlet of the steam heat exchange gas, the steam heat exchanger is also connected to a steam inlet pipe and a steam outlet pipe, and the external high-temperature steam enters the steam heat exchanger through the steam inlet pipe and is discharged through the steam outlet pipe; the hot air outlet pipe is arranged on the floor of the drying chamber and extends along the length direction of the drying chamber, the hot air inlet pipe is arranged on the top surface of the drying chamber and extends along the length direction of the drying chamber, and a plurality of air vents extending along their respective axes are provided on the pipe bodies of the hot air inlet pipe and the hot air outlet pipe.
[0007] In a preferred embodiment, there are two groups of drying pipes, which are arranged side by side in the drying chamber. The hot air inlets of the two groups of drying pipes are respectively arranged on the top surfaces on both sides of the width direction of the drying chamber, and the hot air outlets of the two groups of drying pipes are respectively arranged on the ground on both sides of the width direction of the drying chamber.
[0008] In a preferred embodiment, the outside of the hot air inlet pipe and the hot air outlet pipe are covered with thermal insulation cotton.
[0009] In a preferred embodiment, the steam inlet pipe is connected to a main steam pipe, there are more than two drying chambers, and the drying chambers are arranged side by side along the width direction. The main steam pipe extends along the width direction of the drying chamber and is arranged at one end of each drying chamber.
[0010] In a preferred embodiment, the hot air inlet pipe and the hot air outlet pipe are both arranged at the edge of the drying chamber in the width direction, and the vents extend horizontally toward the interior of the chamber.
[0011] As described above, the present invention has the following beneficial effects: Compared with the prior art, the EPS foam product drying device of the present invention arranges a steam heat exchanger and a heat exchange fan, and arranges a hot air inlet pipe and a hot air outlet pipe at corresponding positions in the drying chamber. During the drying process, the air in the drying chamber is dried and heat-exchanged by the steam heat exchanger. The hot air is discharged through the bottom surface of the drying chamber, passes through the brackets where the EPS foam products are located, and then upwards through the hot air inlet and is sucked out by the heat exchange fan. Thereafter, it is passed through the heat exchange fan and re-entered into the steam heat exchanger for circulated drying and heat exchange. The water vapor carried by the hot air can be effectively filtered after being heated by the steam heat exchanger, and the dry hot air enters the drying chamber, which can achieve the purpose of rapid drying. The structure is simple and the structural arrangement is relatively reasonable. It can achieve the goal of no drying dead corners in the drying chamber, maintain a consistent drying rate, effectively save drying costs, and improve the drying quality and drying speed of the products. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments:
[0013] Figure 1 This is a schematic structural diagram of a specific embodiment of the EPS foam product drying device of the present utility model;
[0014] Figure 2 for Figure 1 Half-section view;
[0015] Figure 3 for Figure 1 A perspective view of the internal structure;
[0016] Figure 4 for Figure 3 Schematic diagram of the layout structure of the drying pipeline;
[0017] Figure 5 for Figure 4 Schematic diagram of the cross section of the hot air outlet pipe.
[0018] Explanation of the accompanying drawings: 1-drying chamber 1; 2-hot air inlet pipe 2; 3-hot air outlet pipe 3; 4-steam heat exchanger 4; 5-heat exchange fan 5; 6-steam inlet pipe 6; 7-steam outlet pipe 7; 8-main steam pipe 8; 9-vent 9; 10-channel 10; 11-thermal insulation cotton 11; 12-motor. DETAILED DESCRIPTION
[0019] In order to make the technical objectives, technical solutions, and beneficial effects of the present invention more clear, the technical solutions of the present invention are further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in a variety of different configurations.
[0020] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0022] The specific embodiment of the EPS foam product drying device involved in the present utility model is as follows: Figures 1 to 5As shown, the EPS foam product drying device includes a drying chamber 1. In this embodiment, the drying chamber 1 is a rectangular chamber that is long from front to back and wide from left to right. It is the basic carrier of all other components. In other embodiments, its specific structure and shape may not be limited, and those skilled in the art can design it arbitrarily according to actual needs.
[0023] There are channels 10 at the front and rear ends of the drying chamber 1, and the channels 10 can be blocked with doors (not shown in the figure). The channel 10 on one side is used for the EPS support vehicle to enter the drying chamber 1, and after drying is completed, it is moved out through the channel 10 on the other side.
[0024] In order to achieve rapid drying of EPS products, drying pipes are also provided in the drying chamber 1. In this embodiment, there are two groups of drying pipes, and the two groups of drying pipes are adaptively arranged at the corner positions on both sides of the width direction of the drying chamber 1 to meet the overall air interactive circulation in the drying chamber 1.
[0025] The drying circuit includes a hot air inlet pipe 2 and a hot air outlet pipe 3. The hot air inlet pipe 2 is used to dry and heat air before discharging it into the drying chamber 1. The hot air outlet pipe 3 is used to draw air carrying moisture from the drying chamber 1 into the drying chamber 1 and discharge it outside the drying chamber 1. Accordingly, a through-hole is formed on one longitudinal sidewall of the drying chamber 1, through which the hot air outlet pipe 3 extends outward.
[0026] In order to ensure that the air can circulate as a whole at all positions in the drying chamber 1, the hot air inlet pipe 2 and the hot air outlet pipe 3 extend forward and backward along the length direction of the drying chamber 1, and their lengths basically remain consistent with the distance in the length direction of the drying chamber 1. At the same time, ventilation holes 9 are provided on the pipe bodies of the hot air inlet pipe 2 and the hot air outlet pipe 3. There are several ventilation holes 9, which are arranged side by side at intervals along their respective axial directions.
[0027] In order to ensure that the heat does not dissipate quickly, the hot air inlet pipe 2 and the hot air outlet pipe 3 are both covered with thermal insulation cotton 11.
[0028] To facilitate heat exchange and convection circulation, based on the principle that hot air rises, the hot air outlet pipes 3 are arranged on the floor at the edges of both sides of the drying chamber 1 in the width direction. The vents 9 on the two hot air inlet pipes 2 are arranged to face each other and extend horizontally, blowing the hot air horizontally along the floor. The hot air inlet pipes 2 are arranged on the top surface of both sides of the drying chamber 1 in the width direction. The vents 9 on the two hot air outlet pipes 3 are arranged to face each other and extend horizontally, drawing the heat-exchanged air from the top of the drying chamber 1.
[0029] The above-mentioned drying pipeline also includes a steam heat exchanger 4 arranged in the drying chamber 1. The steam heat exchanger 4 is arranged at the front end of the drying chamber 1 and is used to connect the hot air inlet pipe 2 and the hot air outlet pipe 3. Correspondingly, a heat exchange fan 5 is also arranged on the outside of the drying chamber 1. The heat exchange fan 5 is equipped with a motor 12. The inlet of the heat exchange fan 5 is connected to the hot air inlet pipe 2, so that the air in the drying chamber 1 is drawn into the heat exchange fan 5 through the hot air inlet pipe 2. The outlet of the heat exchange fan 5 is connected to the inlet of the steam heat exchanger 4, and the hot air outlet pipe 3 is connected to the inlet of the steam heat exchanger 4. The drawn air is passed into the steam heat exchanger 4, and after heating and drying treatment by the steam heat exchanger 4, it is discharged into the drying chamber 1 through the hot air outlet pipe 3.
[0030] The structure and operating principle of the aforementioned steam heat exchanger 4 are consistent with the prior art. The steam heat exchanger 4 is also connected to a steam inlet pipe 6 and a steam outlet pipe 7. Externally connected high-temperature steam enters the steam heat exchanger 4 through the steam inlet pipe 6 and is then discharged through the steam outlet pipe 7. As the high-temperature steam flows through the steam heat exchanger 4, it exchanges heat with the air and dries and filters the water vapor in the air, thereby ensuring that the discharged hot air remains dry. The two aforementioned drying pipelines are each equipped with an independent steam heat exchanger 4 and heat exchange blower 5. Corresponding mounting holes and through-holes are arranged on the front sidewalls of the drying chamber 1 to facilitate circulation of the steam and hot air circulation paths.
[0031] More preferably, in order to accommodate the drying of larger batches of EPS products, in this embodiment, the steam inlet pipe 6 is connected to a main steam pipe 8. There are multiple drying chambers 1, each of which is arranged side by side along the width direction. The main steam pipe 8 extends along the width direction of the drying chambers 1 and is arranged at one end of each drying chamber 1. In this way, steam circulation can be achieved in multiple drying chambers 1 through a single main steam pipe 8.
[0032] During the actual drying operation, the EPS products are pushed into the drying chamber 1, and the air in the drying chamber 1 is dried and heat-exchanged through the steam heat exchanger 4. The hot air is discharged through the bottom surface of the drying chamber 1, and after passing through the brackets where the EPS foam products are located, it is upward through the hot air inlet and sucked out by the heat exchange fan 5. After that, it is passed through the heat exchange fan 5 again into the steam heat exchanger 4 for circulating drying and heat exchange. The water vapor carried by the hot air can be effectively filtered after being heated by the steam heat exchanger 4, and the dry hot air enters the drying chamber 1, which can achieve the purpose of rapid drying.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate and not to limit the technical solutions of the present invention. Any equivalent replacement of the present invention and any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.
Claims
1. EPS foam product drying device, including a drying chamber, characterized in that: The hot air inlet pipe is arranged on the floor of the drying room and extends along the length direction of the drying room. The hot air inlet pipe is arranged on the top surface of the drying room and extends along the length direction of the drying room. The hot air inlet pipe is connected to the inlet of the steam heat exchanger, the hot air inlet pipe is connected to the inlet of the heat exchange fan, and the outlet of the heat exchange fan is connected to the inlet of the steam heat exchange gas. The steam heat exchanger is also connected to a steam inlet pipe and a steam outlet pipe. The external high-temperature steam enters the steam heat exchanger through the steam inlet pipe and is discharged through the steam outlet pipe. The hot air outlet pipe is arranged on the floor of the drying room and extends along the length direction of the drying room. The hot air inlet pipe is arranged on the top surface of the drying room and extends along the length direction of the drying room. The hot air inlet pipe and the hot air outlet pipe are provided with a number of air vents extending along their respective axes.
2. The EPS foam product drying device according to claim 1, characterized in that: There are two groups of drying pipes, which are arranged side by side in the drying room. The hot air inlets of the two groups of drying pipes are respectively arranged on the top surfaces on both sides of the width direction of the drying room, and the hot air outlets of the two groups of drying pipes are respectively arranged on the ground on both sides of the width direction of the drying room.
3. The EPS foam product drying device according to claim 2, characterized in that: The outside of the hot air inlet pipe and the hot air outlet pipe is covered with thermal insulation cotton.
4. The EPS foam product drying device according to claim 2, characterized in that: The steam inlet pipe is connected to a main steam pipe. There are more than two drying chambers, which are arranged side by side along the width direction. The main steam pipe extends along the width direction of the drying chamber and is arranged at one end of each drying chamber.
5. The EPS foam product drying device according to claim 1, characterized in that: The hot air inlet pipe and the hot air outlet pipe are both arranged at the edge positions of the drying chamber in the width direction, and the vents extend toward the chamber in the horizontal direction.