A bright bead drying apparatus

Abstract

This application discloses a bright bead drying device, comprising: a drying chamber assembly having at least one drying chamber, the drying chamber having an inner cavity, and a through flow channel provided between the inner and outer walls of the inner cavity; a liquid heating device of a first heating system connected to the flow channel via a circulation pipeline; a gas heating device of a second heating system connected to the inner cavity via an inlet pipe; and a vacuum device of a vacuum extraction system connected to the inner cavity via an extraction pipe, with the inlet pipe and extraction pipe alternately opened. In this application, the alternating opening of the inlet pipe and extraction pipe avoids the continuous extraction of heated gas entering the inner cavity. Closing the inlet pipe also improves the extraction effect, shortens the extraction time, and reduces heat loss from the inner cavity. In addition, the first heating system heats the inner cavity through the flow channel, maintaining a certain base temperature in the inner cavity, reducing temperature fluctuations, and enabling rapid recovery to the drying temperature of the bright beads after fluctuations occur, thus shortening the drying cycle and improving drying efficiency and effect.

Description

Technical Field

[0001] This application relates to the field of fireworks equipment technology, specifically to a bright bead drying device. Background Technology

[0002] Bright beads are a relatively large-scale product in fireworks production. They are formed by coating the core with powdered chemicals and then rotating it in a high-speed granulator. Generally, to improve the efficiency of rotary granulation, a suitable amount of water, alcohol, or other liquid solvents are sprayed onto the powder during the process. This moistens the powder, causing it to clump together for easier coating. After granulation, the bright beads are dried to remove the water, alcohol, and other liquid solvents, resulting in the final bright bead product.

[0003] Existing bright bead drying equipment mostly uses a drying chamber, into which hot air is supplied to dry the bright beads. The drying chamber is also equipped with an exhaust pipe to remove volatile substances such as water vapor and alcohol produced when the bright beads are heated. Because both the hot air supply and exhaust are continuously open, some heat is carried away during exhaust, affecting heat accumulation within the drying chamber. This results in a longer heating time and greater temperature fluctuations, making it impossible to maintain a stable drying temperature and requiring a longer time to achieve complete drying of the bright beads. Utility Model Content

[0004] This application provides a bright bead drying device, which aims to at least improve the technical problems existing in the prior art.

[0005] In accordance with the above objectives, this application provides a bright bead drying apparatus, comprising:

[0006] A drying oven assembly, the drying oven assembly including at least one drying oven, the drying oven having an inner cavity, and a through flow channel provided between the inner wall and the outer wall of the inner cavity;

[0007] The first heating system includes a liquid heating device and a circulation pipeline, one end of which is connected to the liquid heating device and the other end of which is connected to the flow channel;

[0008] The second heating system includes a gas heating device and an air inlet pipe. One end of the air inlet pipe is connected to the gas heating device, and the other end of the air inlet pipe is connected to the inner cavity of the drying oven.

[0009] The vacuum system includes a vacuum device and a vacuum pipe, one end of which is connected to the vacuum device and the other end of which is connected to the inner cavity of the drying oven.

[0010] The air intake pipe and the air extraction pipe are opened alternately.

[0011] This application has the following beneficial effects: the alternating opening of the air inlet pipe and the air extraction pipe avoids the continuous extraction of heated gas entering the inner cavity. Closing the air inlet pipe also improves the extraction effect and shortens the extraction time, thereby reducing the heat loss of the inner cavity. In addition, the first heating system heats the inner cavity through the flow channel, keeping the inner cavity at a certain base temperature, thereby reducing the temperature fluctuation of the inner cavity. Moreover, it can quickly recover to the drying temperature of the bright beads after fluctuations occur, shortening the drying cycle and improving the drying efficiency and effect.

[0012] Furthermore, the inner cavity has an opening on its front side, and the flow channel is arranged on the periphery and rear side of the inner cavity.

[0013] Furthermore, the outer wall of the drying chamber is provided with an inlet and an outlet that communicate with the flow channel, and the circulation pipeline is connected to the inlet and outlet to communicate with the flow channel.

[0014] Furthermore, the opening is provided with a rotatable door to open or close the inner cavity.

[0015] Furthermore, an air inlet is provided on the bottom wall of the drying oven, the air inlet is connected to the inner cavity, the air inlet pipe is connected to the air inlet, and a first valve is provided between the air inlet and the air inlet pipe.

[0016] Furthermore, the top wall of the drying oven is provided with an air outlet, which is connected to the inner cavity. The air extraction pipe is connected to the air outlet, and a second valve is provided between the air outlet and the air extraction pipe.

[0017] Furthermore, the inner cavity is also equipped with a movable hopper for holding bright beads.

[0018] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of a bright bead drying device provided in an exemplary embodiment of this application;

[0020] Figure 2 This is another overall schematic diagram of a bright bead drying device provided in an exemplary embodiment of this application;

[0021] Figure 3 Figure 1 is a schematic diagram of the structure of a drying box of a bright bead drying device provided in an exemplary embodiment of this application;

[0022] Figure 4 This is another schematic diagram of the drying chamber of a bright bead drying device provided in an exemplary embodiment of this application;

[0023] Figure 5This is a vertical cross-sectional view of the drying chamber of a bright bead drying device provided in an exemplary embodiment of this application.

[0024] in, Figures 1 to 5 The annotations in the accompanying drawings are explained as follows:

[0025] 1 Drying oven, 11 Inner cavity, 12 Flow channel, 13 Opening, 14 Liquid inlet, 15 Liquid outlet, 16 Box door, 17 Air inlet, 18 Air outlet, 19 Hopper, 121 Connecting pipe, 171 First valve, 181 Second valve;

[0026] 21 Liquid heating device; 22 Circulation pipeline;

[0027] 31 Gas heating device; 32 Gas inlet pipe;

[0028] 41 Vacuum device, 42 Evacuation pipe. Detailed Implementation

[0029] To better illustrate this utility model, a further detailed description of this utility model is provided below with reference to the accompanying drawings.

[0030] It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0031] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0032] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0034] As attached Figure 1-5 As shown, this application provides a bright bead drying device through the following technical solution, including:

[0035] A drying oven assembly, comprising at least one drying oven 1, the drying oven having an inner cavity 11, and a through flow channel 12 provided between the inner wall and the outer wall of the inner cavity 11;

[0036] The first heating system includes a liquid heating device 21 and a circulation pipe 22. One end of the circulation pipe 22 is connected to the liquid heating device 21, and the other end of the circulation pipe 22 is connected to the flow channel 12.

[0037] The second heating system includes a gas heating device 31 and an air inlet pipe 32. One end of the air inlet pipe 32 is connected to the gas heating device 31, and the other end of the air inlet pipe 32 is connected to the inner cavity 11 of the drying oven 1.

[0038] The vacuum system includes a vacuum device 41 and a vacuum pipe 42. One end of the vacuum pipe 42 is connected to the vacuum device 41, and the other end of the vacuum pipe 42 is connected to the inner cavity 11 of the drying oven 1.

[0039] The intake pipe 32 and the exhaust pipe 42 are opened alternately.

[0040] Compared with the prior art, this application has the following beneficial effects: the air inlet pipe and the air extraction pipe are opened alternately, which avoids the continuous extraction of heated gas entering the inner cavity. The closure of the air inlet pipe also improves the extraction effect and shortens the extraction time, thereby reducing the heat loss of the inner cavity. In addition, the first heating system heats the inner cavity through the flow channel, so that the inner cavity maintains a certain basic temperature, thereby reducing the temperature fluctuation of the inner cavity. Moreover, after fluctuations occur, it can quickly recover to the drying temperature of the bright beads, shorten the drying cycle, and improve the drying efficiency and effect.

[0041] In the technical solution applied in this embodiment, the inner cavity 11 of the drying oven 1 has an opening 13 on its front side, and a rotatable door 16 is provided at the opening 13. The inner cavity 11 can be opened or closed using the door 16. Flow channels 12 are arranged between the inner and outer walls of the inner cavity 11, excluding the front side and the rear side. That is, flow channels 12 are arranged between the inner and outer walls except at the opening 13. Flow channels 12 on the same side are integrally connected, and adjacent flow channels 12 are connected by a connecting pipe 121. The liquid heated by the liquid heating device 21 enters the flow channels 12 through the circulation pipe, heating the inner cavity 11 on both its periphery and rear side. The first heating system 1, by heating the flow channels 12, can improve the heat preservation effect of the inner cavity 11, reduce heat loss, and provide stable heating heat to the inner cavity 11, allowing the inner cavity 11 to maintain a certain basic heating temperature.

[0042] Specifically, the outer wall of the drying chamber 1 is provided with an inlet 14 and an outlet 15 that communicate with the flow channel 12. The circulation pipe 22 is connected to both the inlet 14 and the outlet 15. The liquid heated by the liquid heating device 21 enters the flow channel 12 through a section of the circulation pipe 22 connected to the inlet 14. The heated liquid heats the inner cavity 11 through the flow channel 12 and then cools down. The cooled liquid flows out through the outlet 15 and returns to the liquid heating device 21 through a section of the circulation pipe 22 connected to the outlet 15. After being reheated, it re-enters the flow channel 12, and so on, continuously circulating to complete the heating of the inner cavity 11. The liquid used by the liquid heating device 21 includes water, heat transfer oil, etc. Since the temperature of the hot drying of the bright beads is not high, water is preferred as the heating liquid.

[0043] In the technical solution applied in this embodiment, an air inlet 17 is provided on the bottom wall of the drying oven 1, which is connected to the inner cavity 11. An air inlet pipe 32 is connected to the air inlet 17, and a first valve 171 is provided between the air inlet 17 and the air inlet pipe 32. An air outlet 18 is provided on the top wall of the drying oven 1, which is also connected to the inner cavity 11. An exhaust pipe 42 is connected to the air outlet 18, and a second valve 181 is provided between the air outlet 18 and the exhaust pipe 42. The gas heated by the gas heating device 31 enters the inner cavity 11 through the air inlet 17 via the air inlet pipe 32 and heats the bright beads. After being heated, the bright beads generate water vapor, alcohol and other volatiles, which float in the inner cavity 11. The vacuum device 41 generates negative pressure in the exhaust pipe 42, which extracts the water vapor, alcohol and other volatiles in the inner cavity 11 through the air outlet 18, preventing the water vapor, alcohol and other volatiles from being reabsorbed by the bright beads and affecting the drying effect. By alternately controlling the first valve 171 and the second valve 181, the inlet pipe 32 and the exhaust pipe 42 can be opened alternately. Specifically, when the first valve 171 is open and the second valve 181 is closed, heated gas continuously enters the inner cavity 11, allowing the inner cavity 11 to quickly and maintain the required drying temperature for the bright beads, and causing water vapor, alcohol, and other volatiles to rapidly and thoroughly detach from the bright beads. When the first valve 171 is closed and the second valve 181 is open, the water vapor, alcohol, and other volatiles floating in the inner cavity 11 are quickly extracted through the outlet 18. Due to the alternating opening of the inlet pipe 32 and the exhaust pipe 42, the heated gas entering the inner cavity 11 is not extracted by the exhaust pipe 42, improving the heating efficiency of the inner cavity 11. When the exhaust pipe 42 is open, because the inlet pipe 32 is closed, the negative pressure generated by the vacuum device 41 can fully and completely act on the inner cavity 11, completing the extraction in a short time. This ensures the effective extraction of water vapor, alcohol, and other volatiles while reducing heat loss from the inner cavity 11.

[0044] Although the exhaust pipe 42 extracts some of the heated gas from the inner cavity 11, causing a drop in the temperature of the inner cavity 11, the first heating system 1 provides stable heating heat to the inner cavity 11, maintaining a certain basic heating temperature. The temperature drop in the inner cavity 11 is small. After the exhaust pipe 42 is closed and the air inlet pipe 32 is opened to introduce heated gas, the temperature in the inner cavity 11 can quickly recover to the temperature required for drying the bright beads. This reduces the impact of frequent and drastic temperature fluctuations on the drying of the bright beads and improves the drying efficiency and effect.

[0045] The inner cavity 11 is also provided with a movable hopper 19 for holding bright beads. The surface of the hopper 19 is provided with multiple ventilation holes to facilitate the entry of heat into the hopper 19 to fully heat the bright beads.

[0046] It should be noted that the first heating system, the second heating system, and the extraction system work together with the drying oven, meaning that the first heating system, the second heating system, and the extraction system can work together to operate one or more drying ovens.

[0047] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A bright bead drying device, characterized in that, include: A drying oven assembly, the drying oven assembly including at least one drying oven, the drying oven having an inner cavity, and a through flow channel provided between the inner wall and the outer wall of the inner cavity; The first heating system includes a liquid heating device and a circulation pipeline, one end of which is connected to the liquid heating device and the other end of which is connected to the flow channel; The second heating system includes a gas heating device and an air inlet pipe. One end of the air inlet pipe is connected to the gas heating device, and the other end of the air inlet pipe is connected to the inner cavity of the drying oven. The vacuum system includes a vacuum device and a vacuum pipe, one end of which is connected to the vacuum device and the other end of which is connected to the inner cavity of the drying oven. The air intake pipe and the air extraction pipe are opened alternately.

2. The bright bead drying equipment according to claim 1, characterized in that, The inner cavity has an opening on its front side, and the flow channels are arranged on the periphery and rear side of the inner cavity.

3. The bright bead drying equipment according to claim 2, characterized in that, The outer wall of the drying chamber is provided with an inlet and an outlet that communicate with the flow channel, and the circulation pipeline is connected to the inlet and outlet to communicate with the flow channel.

4. The bright bead drying equipment according to claim 2, characterized in that, The opening is equipped with a rotatable door to open or close the inner cavity.

5. The bright bead drying equipment according to claim 1, characterized in that, An air inlet is provided on the bottom wall of the drying oven, the air inlet is connected to the inner cavity, the air inlet pipe is connected to the air inlet, and a first valve is provided between the air inlet and the air inlet pipe.

6. The bright bead drying equipment according to claim 5, characterized in that, The top wall of the drying oven is provided with an air outlet, which is connected to the inner cavity. The air extraction pipe is connected to the air outlet, and a second valve is provided between the air outlet and the air extraction pipe.

7. A bright bead drying apparatus according to any one of claims 1-6, characterized in that, The inner cavity is also equipped with a movable hopper for holding bright beads.

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