Energy-saving drying machine with internal blowing

Abstract

The utility model relates to an inner blowing type energy -saving drying machine, it includes the machine cylinder that lower part forms material drying cavity, flow guide pipeline, heating component and fan, wherein machine cylinder forms the through -hole from one side, flow guide pipeline includes the first passageway that passes through the through -hole and is connected with the fan from the outer end, the second passageway that extends from the inner end of first passageway and forms the air outlet towards drying cavity from bottom part. The utility model one aspect through the heating component is built -in in the second passageway, makes the airflow in the machine cylinder inner chamber gradually heats in the top -down flow, avoids the loss that heat overflow produces, effectively improves the heat energy utilization, reduces the cost, on the other hand based on the size layout and the cooperative effect of shunt passageway of first, second passageway, makes the airflow shunt and in long -distance flow can accurate control temperature to eliminate the adverse effect that turbulence causes by airflow reversing, effectively promotes the drying effect to material.

Description

Technical Field

[0001] This utility model belongs to the field of dryers, specifically relating to an internal blowing energy-saving dryer. Background Technology

[0002] A hot air dryer is a device that uses the principle of heat pump and sensible heat exchange technology to provide high-temperature hot air. It generally includes a fan, a barrel with a feed inlet and a discharge outlet, a hot air duct with heating elements connected between the fan and the barrel, and an exhaust duct.

[0003] Currently, there is a Chinese patent with publication number CN219776261 U, which discloses an energy-saving dryer, including a fan, a drum, a hot air duct with a heating element connected between the fan and the drum, and an exhaust duct. The drum forms an inlet from the top and an outlet from the bottom. The exhaust duct is connected to the top of the drum. The hot air duct includes a guide pipe, a heating pipe, and a diffuser pipe. The drum includes an upper drum and a lower drum that are connected vertically. The upper drum includes a side panel with a top forming an inlet and a cover plate movably connected to the top of the side panel that can open or close the inlet. The guide pipe is located outside the side panel and is connected to the fan from one end. The heating pipe passes through the lower part of the side panel from the other end of the guide pipe and is inserted into the inner cavity of the upper drum. The heating pipe includes a horizontally extending first section and a vertically downward extending second section from the end of the first section away from the guide pipe. The heating element is placed in the first section.

[0004] However, in actual production, the existing heating pipes consist of a right-angle pipe formed by the first and second sections, and the heating element is placed in a horizontal pipe passing through the side panel. This causes the heating area of ​​the heating element to still overflow outside the barrel, resulting in heat loss and waste, high cost, and the heating element being far from the material layout, increasing heat loss during hot air transfer. This makes it difficult for the material temperature change in the lower barrel area to keep synchronized with the temperature change of the heating element, affecting the accuracy of material temperature control. In addition, when the hot air flows at high speed through the junction of the guide pipe and the heating pipe, turbulence is easily generated, resulting in uneven airflow velocity distribution and affecting the drying effect. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an improved internal blowing energy-saving dryer.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] An internally blown energy-saving dryer includes a barrel with a material drying chamber at the bottom, a guide pipe, a heating element, and a fan. The barrel has a through hole on one side. The guide pipe includes a first channel that passes through the through hole and is connected to the fan from the outer end, and a second channel that extends downward from the inner end of the first channel and forms an air outlet facing the drying chamber from the bottom. The length of the second channel is greater than the length of the first channel. The heating element is disposed in the second channel and forms a heating zone that extends vertically. The heating element also forms multiple diversion channels located in the heating zone and extending vertically. The airflow generated by the fan is dispersed along the second channel into the multiple diversion channels and gradually heated from top to bottom before being blown into the drying chamber through the air outlet.

[0008] According to a specific embodiment and preferred aspect of this utility model, the through hole is located in the upper part of the side wall of the barrel; the first channel extends horizontally, and the second channel extends vertically, wherein the length of the second channel is 1.5 to 2 times the length of the first channel. This arrangement achieves optimal airflow heating efficiency and material drying effect.

[0009] Preferably, the barrel includes an upper cylindrical body and a lower cylindrical body that gradually narrows from the bottom of the upper cylindrical body downwards, wherein the through hole is located on the side wall of the upper cylindrical body, and the length of the portion of the first channel extending into the inner cavity of the upper cylindrical body is less than or equal to the radius of the upper cylindrical body.

[0010] Preferably, the centerline of the second channel coincides with the centerline of the barrel. This facilitates the airflow from the outlet to be evenly distributed to the material, ensuring uniform drying.

[0011] According to another specific embodiment and preferred aspect of this utility model, the heating component includes a plurality of diversion modules arranged in a ring at intervals around the center line of the second channel, and a heating element disposed between each pair of adjacent diversion modules, wherein each diversion module forms a diversion channel, and the airflow entering the second channel is diverted to enter each diversion channel for heating. This design is simple and easy to assemble and implement.

[0012] Preferably, the cross-section of each shunt module is fan-shaped.

[0013] Preferably, the inner walls of each diversion channel on opposite sides are provided with multiple comb-like teeth distributed radially at intervals along the diversion module. Here, the multiple comb-like teeth comb the airflow passing through each diversion channel, reducing turbulence and flow phenomena.

[0014] Preferably, the outer wall of each diversion module is provided with multiple comb-shaped teeth spaced apart along the arc direction of a fan shape. Here, based on the gap formed between each diversion module and the inner wall of the second channel, the multiple comb-shaped teeth are arranged on the outer wall of the diversion module to ensure that the airflow velocity in the gap is uniform and stable.

[0015] According to another specific embodiment and preferred aspect of the present invention, the dryer further includes a discharge module disposed at the bottom of the drum, wherein the discharge module includes a discharge pipe and an operating component for separating or connecting the discharge pipe with the discharge port at the bottom of the drying chamber.

[0016] Preferably, a laterally extending insertion groove is formed between the top of the unloading pipe and the bottom of the barrel. The operating component includes an operating plate inserted into the insertion groove, wherein an open opening is formed on the operating plate. Driving the operating plate to reciprocate along the insertion groove causes the open opening to align or misalign with the discharge port, thereby connecting or separating the unloading pipe from the discharge port. This makes operation simple and convenient.

[0017] Due to the implementation of the above technical solution, this utility model has the following advantages compared with the prior art:

[0018] The existing heating pipe consists of a right-angled pipe formed by the first and second sections, with the heating element placed in a horizontal pipe passing through the side panel. This results in the heating area of ​​the heating element still overflowing outside the drum, causing heat loss and waste, and high cost. Furthermore, the heating element is far from the material placement, increasing heat loss during hot air transfer, making it difficult to synchronize material temperature changes in the lower drum area with the heating element temperature changes, affecting the accuracy of material temperature control. In addition, turbulence is easily generated when hot air flows at high speed through the junction of the guide pipe and the heating pipe, leading to uneven airflow velocity distribution and affecting the drying effect. This application addresses the structural improvements of the internal blowing energy-saving dryer. This invention employs a holistic design to cleverly address the shortcomings and defects of existing technologies. In this dryer, materials are loaded into the drying chamber, and airflow generated by a fan flows sequentially along the first and second channels. The second channel is longer than the first, reducing the airflow distance in the first channel and extending it in the second. Upon entering the second channel, the airflow is dispersed through multiple diversion channels located in the heating zone and gradually heated from top to bottom. This effectively eliminates the adverse effects of turbulence caused by airflow reversal, achieving uniform airflow and thorough heating over a long distance. Finally, the airflow is blown downwards into the drying chamber through the outlet to dry the material. Therefore, compared to existing technologies, this invention, on the one hand, by embedding the heating element within the second channel, allows the airflow to be gradually heated as it flows downwards within the chamber, avoiding heat loss due to overflow and effectively improving thermal energy utilization and reducing costs. On the other hand, the synergistic effect of the size layout of the first and second channels and the diversion channels allows for airflow diversion and precise temperature control over long distances, eliminating the adverse effects (heat fluctuations) caused by turbulence during airflow reversal and effectively improving the drying effect on the material. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural diagram of the internal blowing energy-saving dryer in this embodiment;

[0020] Figure 2 for Figure 1 A top-down view;

[0021] Figure 3 for Figure 2 Enlarged cross-sectional view along the central AA direction;

[0022] Figure 4 for Figure 1 Front view diagram;

[0023] Figure 5 for Figure 4 Enlarged cross-sectional view of the central local structure along the BB direction;

[0024] Wherein: 1, barrel; 10, upper cylinder; k0, through hole; 11, lower cylinder; q, drying chamber; k1, discharge port;

[0025] 2. Guide duct; 21. First channel; 22. Second channel; k2. Air outlet;

[0026] 3. Heating component; 30. Diverter module; t. Diverter channel; b. Comb section; 31. Heating element;

[0027] 4. Fan;

[0028] 5. Unloading module; 50. Unloading pipe; c. Insertion groove; 51. Operating component; 510. Operating insert plate; k3. Opening. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0035] like Figures 1 to 5 As shown, the internal blowing energy-saving dryer of this embodiment includes a barrel 1, a guide pipe 2, a heating component 3, and a fan 4.

[0036] Specifically, the cylinder 1 includes an upper cylinder 10 in the shape of a cylinder and a lower cylinder 11 that gradually narrows from the bottom of the upper cylinder 10 downwards. The top of the upper cylinder 10 is provided with a cover for opening and adding materials, and the top of the upper cylinder 10 is also provided with an exhaust pipe. A through hole k0 is formed on one side of the upper cylinder 10. A material drying chamber q is formed inside the lower cylinder 11, and the bottom of the drying chamber q is open to form a discharge port k1 for unloading.

[0037] In this example, the guide pipe 2 includes a first channel 21 that passes through a through hole k0 and is connected to the fan 4 from the outer end, and a second channel 22 that extends downward from the inner end of the first channel 21 and forms an air outlet k2 facing the drying chamber q from the bottom, wherein the length of the second channel 22 is greater than the length of the first channel 21.

[0038] In some specific embodiments, the first channel 21 extends horizontally, and the second channel 22 extends vertically, wherein the length of the second channel 22 is 1.5 to 2 times the length of the first channel 21, and in this embodiment, a preferred value is 1.7 times. This arrangement achieves optimal airflow heating efficiency and material drying effect.

[0039] Meanwhile, the length of the portion of the first channel 21 extending into the inner cavity of the upper cylinder 10 is equal to the radius of the upper cylinder 10, and the centerline of the second channel 22 coincides with the centerline of the cylinder 1. This facilitates the airflow from the outlet to be evenly directed towards the material, ensuring uniform drying.

[0040] To further facilitate implementation, the air outlet k2 extends into the drying chamber q and is in the shape of a cone that gradually widens from top to bottom, so as to expand the flow of hot air and ensure that the material is heated evenly.

[0041] In this example, the heating component 3 is disposed in the second channel 22 and forms a heating zone extending vertically. The heating component 3 also forms multiple diversion channels t located in the heating zone and extending vertically. The airflow generated by the fan 4 is dispersed along the second channel 22 into the multiple diversion channels t and gradually heated from top to bottom so as to be blown downward through the air outlet k2 into the drying chamber q.

[0042] In some specific embodiments, the heating component 3 includes a plurality of diversion modules 30 arranged in a ring at intervals around the center line of the second channel 22, and a heating element 31 disposed between each pair of adjacent diversion modules 30. Each diversion module 30 forms a vertically penetrating diversion channel t, and the airflow entering the second channel 22 is diverted to enter each diversion channel t for heating. Here, the structure is simple and easy to assemble and implement.

[0043] To further facilitate implementation, each diversion module 30 has a fan-shaped cross-section. The inner walls of each diversion channel t (i.e., the two sides of the fan shape) are respectively provided with multiple comb-like teeth b distributed radially at intervals along the diversion module 30. The outer wall of each diversion module 30 is also provided with multiple comb-like teeth b distributed at intervals along the arc direction of the fan shape. Here, the multiple comb-like teeth b are used to comb the airflow through each diversion channel t, reducing turbulence and flow disturbances. Simultaneously, based on the gap formed between each diversion module 30 and the inner wall of the second channel 22, the multiple comb-like teeth b are arranged on the outer wall of the diversion module 30 to ensure a uniform and stable airflow velocity within the gap.

[0044] The heating element 31 is a conventional heating element that can achieve temperature control.

[0045] In addition, the dryer in this embodiment also includes a discharge module 5 disposed at the bottom of the barrel 1, wherein the discharge module 5 includes a discharge pipe 50 and an operating component 51 for separating or connecting the discharge pipe 50 with the discharge port at the bottom of the drying chamber q.

[0046] In some specific embodiments, a laterally extending insertion groove c is formed between the top of the discharge pipe 50 and the bottom of the barrel 1. The operating member 51 includes an operating plate 510 inserted into the insertion groove c, wherein an open opening k3 is formed on the operating plate 510. Driving the operating plate 510 to reciprocate along the insertion groove c causes the open opening k3 to align or misalign with the discharge port k1. The discharge pipe 50 then connects to the discharge port k1 for discharge or to separate the material to block it in the drying chamber q for drying. Here, the operation is simple and convenient.

[0047] In summary, after adopting this dryer, the material is loaded into the drying chamber, and the airflow generated by the fan flows sequentially along the first channel and the second channel. The second channel is longer than the first channel to reduce the airflow distance in the first channel and extend the airflow distance in the second channel. When the airflow enters the second channel, it is dispersed through multiple diversion channels located in the heating zone and gradually heated from top to bottom. This effectively eliminates the adverse effects of turbulence caused by airflow reversal, achieving uniform airflow speed and sufficient heating during long-distance flow. Finally, the airflow is blown downward into the drying chamber through the air outlet to dry the material. Therefore, compared with the prior art, this utility model has several advantages. First, by embedding the heating component in the second channel, the airflow is gradually heated as it flows from top to bottom within the barrel cavity, avoiding heat loss due to heat overflow, effectively improving thermal energy utilization and reducing costs. Second, based on the size layout of the first and second channels and the synergistic effect of the diversion channels, the airflow is diverted and the temperature can be precisely controlled during long-distance flow, thereby eliminating the adverse effects (heat fluctuations) caused by turbulence generated by airflow reversal and effectively improving the drying effect on materials. Third, multiple comb-like parts are used to comb the airflow through each diversion channel, reducing turbulence and flow phenomena. At the same time, based on the gaps formed between each diversion module and the inner wall of the second channel, multiple comb-like parts are arranged on the outer wall of the diversion module to ensure that the airflow velocity in the gaps is uniform and stable.

[0048] The present utility model has been described in detail above, with the aim of enabling those skilled in the art to understand its contents and implement it. However, this description should not be construed as limiting the scope of protection of the present utility model. All equivalent changes or modifications made in accordance with the spirit and essence of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. An internally blown energy-saving dryer, comprising a cylinder with a material drying chamber formed in its lower part, a guide pipe, a heating element, and a fan, wherein the cylinder has a through hole on one side, and the guide pipe includes a first channel passing through the through hole and connected to the fan from its outer end, and a second channel extending downward from the inner end of the first channel and forming an air outlet facing the drying chamber from its bottom, characterized in that, The length of the second channel is greater than the length of the first channel; the heating component is disposed in the second channel and forms a heating zone extending vertically, wherein the heating component also forms multiple diversion channels located in the heating zone and extending vertically, and the airflow generated by the fan is dispersed along the second channel into the multiple diversion channels and gradually heated from top to bottom so as to be blown downward through the air outlet into the drying chamber.

2. The internal blowing energy-saving dryer according to claim 1, characterized in that, The through hole is located on the upper part of the side wall of the barrel; the first channel extends horizontally and the second channel extends vertically, wherein the length of the second channel is 1.5 to 2 times the length of the first channel.

3. The internal-blowing energy-saving dryer according to claim 1 or 2, characterized by The barrel includes a cylindrical upper cylinder and a lower cylinder that gradually narrows from the bottom of the upper cylinder downwards, wherein the through hole is located on the side wall of the upper cylinder, and the length of the portion of the first channel extending into the inner cavity of the upper cylinder is less than or equal to the radius of the upper cylinder.

4. The internal blowing energy-saving dryer according to claim 1, wherein The centerline of the second channel coincides with the centerline of the barrel.

5. The internal-blowing energy-saving dryer according to claim 1, wherein The heating component includes a plurality of diversion modules arranged in a ring at intervals around the center line of the second channel, and a heating element disposed between each pair of adjacent diversion modules, wherein each diversion module forms a diversion channel, and the airflow entering the second channel is diverted to enter each diversion channel for heating.

6. The internal-blowing energy-saving dryer according to claim 5, wherein Each of the aforementioned shunt modules has a fan-shaped cross-section.

7. The internal blowing energy-saving dryer according to claim 6, wherein Each of the aforementioned diversion channels has multiple comb-shaped teeth distributed radially at intervals along the inner walls of its opposite sides.

8. The internal blowing energy saving dryer according to claim 6, wherein Each of the aforementioned diversion modules has multiple comb-shaped teeth spaced apart along a fan-shaped arc direction on its outer wall.

9. The internal blowing energy saving dryer as claimed in claim 1, wherein, The dryer also includes a discharge module located at the bottom of the drum, wherein the discharge module includes a discharge pipe and an operating component for separating or connecting the discharge pipe to the discharge port at the bottom of the drying chamber.

10. The internal blowing energy-saving dryer according to claim 9, wherein A transversely extending insertion groove is formed between the top of the unloading pipe and the bottom of the barrel. The operating component includes an operating plate inserted into the insertion groove. An open opening is formed on the operating plate, which is driven to reciprocate along the insertion groove and cause the open opening to align or misalign with the discharge port. The unloading pipe is then connected to or separated from the discharge port.

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