An electrically heated air-blast drying apparatus

Abstract

The present application relates to the technical field of object drying, in particular to an electric heat blowing drying device, which comprises a shell and an inner container, the inside of the inner container is provided with a flow guide plate, a fan blade and a heating pipe, further comprising an air adjusting assembly arranged in front of the fan blade and a separation piece arranged at the bottom of the inner container; the air adjusting assembly is rotationally arranged on the side wall of the flow guide plate, the air adjusting assembly has a first air outlet for drying objects and a second air outlet for increasing the gas flow rate, the first air outlet and the second air outlet are moved to the front of the fan blade by rotation; the present application adjusts the air pressure and the air flow rate by arranging two air outlets, before drying, the high flow rate gas generated by the second air outlet blows off the hard water on the surface of the objects, and the separated hard water is isolated by the liquid collecting cavity. During the drying process, the hard water on the surface of the objects is reduced, thereby reducing the generation of scale and reducing the area that needs to be wiped.

Description

Technical Field

[0001] This invention relates to the field of object drying technology, and more specifically, to an electric heating blower drying device. Background Technology

[0002] Electric heating drying ovens are widely used drying equipment, commonly used in industries such as chemical, food, pharmaceutical, electronics, and materials for dehydration, drying, and curing of materials. Their basic working principle is as follows: heat is generated by electric heating elements, and hot air is blown into the oven by a blower, ensuring full contact with the material to be dried. Through heat exchange, the moisture in the material is removed, thus achieving drying.

[0003] In the coupler maintenance process, this equipment is mainly used for preheating before welding, rapid drying after cleaning, and dehumidification and rust prevention. It is a key piece of equipment to ensure maintenance quality and the stability of subsequent processes. However, in actual use, the following problems still exist:

[0004] First, if untreated hard water (such as tap water or groundwater) is used for cleaning, the calcium and magnesium ions in the water will precipitate and adhere to the surface of the coupler during the high-temperature drying process, forming scale. If magnetic particle or ultrasonic testing is performed directly after drying, the scale layer may cover fine cracks or affect the coupling effect of the flaw detector, leading to inaccurate detection. Because hard water is present in various parts of the coupler, a thorough wiping of the coupler is also required after drying, resulting in a longer wiping time.

[0005] Secondly, when there is a lot of moisture remaining on the surface of the coupler, it takes a longer drying time to dry it completely, which affects the overall maintenance efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide an electric heating blower drying device that removes water from items before drying by controlling the pressure and flow rate of the exhaust air, and isolates the removed water through a set liquid collection chamber, thereby solving the problems mentioned in the background art, namely, the problem of long wiping time and long drying time due to excessive water scale on the surface of the car coupler.

[0007] To achieve the above objectives, the electric heating blower drying device includes an outer shell and an inner liner. The inner liner is provided with a guide plate, fan blades and a heating tube. It also includes an air regulating component located in front of the fan blades and an isolation component located at the bottom of the inner liner.

[0008] The air regulating component is rotatably mounted on the side wall of the guide plate. The air regulating component has a first air outlet for drying the item and a second air outlet for increasing the gas flow rate. The first air outlet and the second air outlet move to the front of the fan blade by rotation. Before the drying operation, the second air outlet is in front of the fan blade, and the moisture on the surface of the item is blown off by increasing the gas flow rate.

[0009] The separator divides the bottom of the inner liner into a liquid collection chamber, which is used to receive moisture falling from the surface of the item. During the drying process, the separator isolates the liquid collection chamber from the inside of the inner liner, preventing the moisture in the liquid collection chamber from participating in the drying process.

[0010] In the above technical solution, by increasing the airflow before drying, most of the water is blown off and directly enters the collection chamber for isolated storage. This results in less residual moisture on the coupler surface during drying, reducing scale formation, and the blown-off water is not heated, allowing the coupler to heat up quickly.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. In this electric heating blower drying device, two air outlets are used to regulate the airflow pressure and speed. Before drying, the high-velocity gas generated by the second air outlet blows off the hard water from the surface of the item, and a collection chamber is used to isolate the blown-off hard water. During the drying process, the amount of hard water on the surface of the item is reduced, thereby reducing the formation of limescale and the area that needs to be wiped. The blown-off hard water is stored in the collection chamber and is not heated, so that the heat inside the inner chamber is applied to the item, increasing the heating rate inside the inner chamber and reducing the drying time.

[0013] 2. In this electric heating blower drying device, the liquid collection chamber not only collects the water blown off during the airflow dehydration process, but also has heat exchange tubes to cool the gas inside the inner tank. By pouring sufficient cool water into the liquid collection chamber in advance, the heat exchange tubes are opened after drying to allow the gas inside the inner tank to be cooled through the heat exchange tubes, thereby accelerating the temperature reduction inside the inner tank.

[0014] 3. In this electric heating blower drying device, before the items are dried, soft water is released through the spray plate to wash away the original hard water on the surface of the items. On the one hand, after the items are dried, the scale on their surface will be further reduced. On the other hand, the water generated by the spray can enter the liquid collection chamber, so there is no need to add additional water to the liquid collection chamber. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the outer casing of the present invention;

[0017] Figure 3 This is a schematic cross-sectional view of the inner liner of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the air conditioning component of the present invention. Figure 1 ;

[0019] Figure 5 This is a schematic diagram of the structure of the air conditioning component of the present invention. Figure 2 ;

[0020] Figure 6 This is a schematic diagram of the structure of the support frame of the present invention;

[0021] Figure 7 This is a cross-sectional structural diagram of the isolation component of the present invention;

[0022] Figure 8 This is a schematic diagram of the baffle frame of the present invention;

[0023] Figure 9 This is a schematic diagram of the working state of the driver board of the present invention. Figure 1 ;

[0024] Figure 10 This is a schematic diagram of the working state of the driver board of the present invention. Figure 2 ;

[0025] Figure 11 This is a schematic diagram of the heat exchange tube of the present invention;

[0026] Figure 12 This is a schematic diagram of the spray disc of the present invention.

[0027] The meanings of the labels in the diagram are as follows:

[0028] 100. Outer shell; 101. Door; 102. Exhaust valve; 103. Insulation layer; 104. Fan blade; 105. First motor; 106. Heating element; 107. Second motor; 110. Inner liner; 120. Deflector plate; 121. Ventilation opening; 130. Air conditioning assembly; 131. Ventilation plate; 132. Pressure boosting component; 133. Connecting part; 134. Conical tube; 135. Pressure boosting port; 140. 141. Isolation component; 142. Liquid collection chamber; 143. Through port; 144. Baffle frame; 145. Drive rod; 146. Sliding seat; 147. Drive plate; 148. First drive surface; 149. Second drive surface; 150. Bearing frame; 151. Support arm; 152. Angle iron; 153. Lever; 154. Friction wheel; 160. Heat exchange tube; 161. Insert rod; 170. Spray plate; 171. Liquid injection port. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, 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," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[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 one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] Couplers are key components on railway vehicles used to connect carriages. Their function is not only to link carriages together, but also to transmit traction and braking forces during train operation and absorb the impact forces generated during train operation, starting, and braking. During coupler maintenance, an electric heating blower drying device is used for drying. The electric heating blower drying device, such as... Figure 1 As shown, it mainly includes an outer shell 100 and an inner liner 110. The door 101 on one side of the outer shell 100 is used to open or close the outer shell 100. After closing, the heating mechanism can be controlled through the control panel on one side of the outer shell 100 to dry the items inside the inner liner 110.

[0033] like Figure 2 As shown, an insulation layer 103 is provided between the outer shell 100 and the inner liner 110. This insulation layer 103 can be made of microfiber or rock wool. It can reduce heat loss and prevent the outer shell 100 from overheating and causing burns.

[0034] The inner liner 110 has a baffle 120 inside, which is located near the back side of the inner liner 110 (i.e., Figure 2 A space is reserved between the right side of the inner liner 110 and the back side of the baffle 120 for gas recirculation. Specifically, the height of the baffle 120 is lower than the height of the inner liner 110. This design creates gaps between the top and bottom of the baffle 120 and the inner liner 110, which ultimately form a channel for gas recirculation, so as to realize the circulation of gas within the outer shell 100.

[0035] The fan blade 104 is installed between the guide plate 120 and the back side of the inner liner 110, and is driven by a first motor 105. When the first motor 105 drives the fan blade 104 to rotate, the fan blade 104 blows air. At this time, the air moves forward and passes through the guide plate 120, then enters the middle and front of the inner liner 110. Because the fan blade 104 blows the air away, the rear of the fan blade 104 ( Figure 2 The pressure on the right side of the middle fan blade 104 is significantly lower than the pressure in front. At this time, the gas inside the inner liner 110 will flow back through the gap between the guide plate 120 and the inner liner 110 to the rear of the fan blade 104, and then continue to be blown out by the fan blade 104, thus achieving circulation. By setting a heating tube 106 in the gas flow path, the gas can be heated, thereby raising the temperature inside the inner liner 110 to dry the items. During the drying process, some gas can be discharged through the exhaust valve 102 to ensure the stability of pressure and humidity inside the inner liner 110.

[0036] It should be understood that the heating element 106 can be positioned in front of or behind the fan blade 104. Figure 2 The position of the heating element 106 in the diagram is for illustrative purposes only and does not represent the specific location of the heating element 106.

[0037] To prevent scale buildup on the surface of items after drying, the present invention provides an air regulating component 130 in front of the fan blade 104 and an isolation component 140 at the bottom of the inner liner 110. The air regulating component 130 blows some water off, and the isolation component 140 collects the blown-off water, thus solving the problems of excessive scale buildup on the surface of items after drying and long drying time.

[0038] Specifically, the air regulating assembly 130 is rotatably mounted on the side wall of the guide plate 120. The air regulating assembly 130 has a first air outlet for drying items and a second air outlet for increasing gas flow rate. The first and second air outlets rotate to the front of the fan blade 104. When the second air outlet is in front of the fan blade 104, it blows away moisture from the surface of the item by increasing the gas flow rate. Figure 3 As shown, the isolation member 140 is located inside the inner liner 110 and divides the bottom of the inner liner 110 into a liquid collection chamber 141. The liquid collection chamber 141 is used to receive moisture falling from the surface of the item. During the drying operation, the isolation member 140 isolates the liquid collection chamber 141 from the inside of the inner liner 110, so that the liquid in the liquid collection chamber 141 cannot participate in the drying operation.

[0039] Figure 4The specific structure of the air conditioning assembly 130 is shown. As shown, the air conditioning assembly 130 includes a ventilation plate 131 and a pressurizing component 132 that are attached to the side wall of the guide plate 120. The ventilation plate 131 and the pressurizing component 132 are fixedly connected by a connecting part 133. One side of the connecting part 133 is fixedly connected to the output shaft of the second motor 107, so that the second motor 107 drives the ventilation plate 131 and the pressurizing component 132 to rotate through the connecting part 133. The second motor 107 is installed on the outside of the outer casing 100 to avoid being affected by the high temperature inside the inner liner 110.

[0040] Both the ventilation plate 131 and the pressurizing component 132 can rotate to the ventilation opening 121 on the side wall of the guide plate 120. The ventilation opening 121 is located directly in front of the fan blade 104 and is used to allow the gas blown out by the fan blade 104 to pass through. The inner diameter of the ventilation opening 121 is smaller than the inner diameter of the pressurizing component 132 to prevent gas from being discharged through the gap between the ventilation opening 121 and the pressurizing component 132.

[0041] like Figure 4 and Figure 5 As shown, the sidewall of the ventilation plate 131 is provided with multiple through holes, which serve as the first air outlet. When the ventilation plate 131 is in front of the ventilation port 121, the gas is discharged through the through holes in the sidewall of the ventilation plate 131. The ventilation plate 131 of the present invention has a large number of through holes in its sidewall, which avoids affecting the gas flow rate. The pressurizing component 132 is a tubular structure. One end of the pressurizing component 132 is slidably attached to the sidewall of the guide plate 120, and the other end is provided with a tapered tube 134. The tapered tube 134 has a tapered structure with one end closed. The inclined surface of the tapered tube is used to guide the gas in the pressurizing component 132 to the inner ring of the pressurizing component 132. At the same time, the diameter of the tapered tube 134 is smaller than the diameter of the pressurizing component 132. In this way, the gas can only be discharged through the pressurizing port 135 formed between the tapered tube 134 and the pressurizing component 132. The pressurizing port 135 serves as the second air outlet. Because the exhaust flow rate of the pressure inlet 135 is small, the gas is concentrated in the pressure inlet 132, which increases the gas pressure inside the pressure inlet 132. At this time, the flow rate of the gas when it is discharged through the pressure inlet 135 will increase, so as to facilitate the blowing off of the moisture on the surface of the item.

[0042] Understandably, by setting the second motor 107 as a high-speed brushless motor, the gas flow rate can be further increased.

[0043] To facilitate blowing moisture off multiple parts of an item, such as Figure 6As shown, this invention rotates the support frame 150, thereby adjusting the angle of the item and allowing multiple parts of the item to be exposed to airflow. Specifically, the support frame 150 is rotatably mounted on top of a support arm 151, which rests on top of an angle iron 152 located on the side wall of the inner liner 110, providing support for the support frame 150. Next, a friction wheel 154 is mounted on the outer ring of the support frame 150. This friction wheel 154 is controlled by a lever 153, the top of which rotates through the inner liner 110 and the outer shell 100. When rotation of the support frame 150 is needed, the lever 153 is activated, causing the support frame 150 to rotate via the friction wheel 154. The item can then be placed on the support frame 150.

[0044] Figure 7 The specific structure of the isolation member 140 is shown. As shown, the isolation member 140 is a plate-like structure, with its outer ring fixedly connected to the inner wall of the inner liner 110, forming a liquid collection cavity 141 between the bottom of the isolation member 140 and the bottom of the inner liner 110. Furthermore, the isolation member 140 has a certain thickness, a design that allows for the installation of an insulation layer 103 inside the isolation member 140 to prevent heat transfer to the liquid collection cavity 141. In addition, the top of the isolation member 140 has multiple through-holes 142, with baffle frames 143 slidably disposed within each hole 142. When the baffle frame 143 enters the hole 142, it blocks the hole 142, preventing water on the surface of the isolation member 140 from entering the liquid collection cavity 141. When the baffle frame 143 disengages from the hole 142, water on the surface of the isolation member 140 can then enter the liquid collection cavity 141 through the hole 142.

[0045] In the above description, the baffle frame 143 enters or exits the port 142 via a drive mechanism. In some embodiments, the drive mechanism may be a cylinder connected to the baffle frame 143, which drives the baffle frame 143 to move up and down through the extension and retraction of the cylinder.

[0046] And in Figures 8-10 In the embodiment shown, the drive mechanism includes a driven rod 144 fixedly disposed on the top of the baffle frame 143 and a drive plate 146 fixedly disposed on the outer ring of the booster 132. The driven rod 144 is slidably disposed in a sliding seat 145 on the side wall of the guide plate 120, and a spring is provided between the top of the baffle frame 143 and the bottom of the sliding seat 145 to elastically connect the two. The outer ring of the drive plate 146 is provided with a first drive surface 147, which presses the driven rod 144 downward through the first drive surface 147.

[0047] The working principle of this invention will be described in detail below:

[0048] Before drying, place the item on top of the support rack 150, then close the door 101. Next, turn on the power to the first motor 105, causing it to drive the fan blades 104 to rotate and blow air. At this time, the booster unit 132 rotates to the front of the vent 121. Figure 10 As shown, due to the lack of compression from the drive plate 146, the spring rebounds, causing the baffle frame 143 to move upwards and disengage from the opening 142. Simultaneously, the gas velocity increases as it exits through the pressurizing component 132. The impact force of this airflow on the item blows moisture off its surface. By rotating the support frame 150, moisture is blown off various parts of the item, and the blown-off moisture flows into the collection chamber 141 through the opening 142.

[0049] Next, the drying process begins. At this time, the drive ventilation plate 131 is rotated to the front of the ventilation opening 121, and the state is as follows: Figure 9 As shown, the drive plate 146 presses the driven rod 144 downward through the first drive surface 147, causing the driven rod 144 to press the baffle frame 143 into the opening 142. At this time, the liquid collection chamber 141 is isolated, and then the heating tube 106 is activated to heat the inside of the inner liner 110. Since most of the moisture on the surface of the item is blown off before drying, the surface scale will be reduced after drying.

[0050] Furthermore, the presence of the insulation layer 103 causes the temperature inside the inner liner 110 to drop too slowly after drying. If items are removed quickly under these conditions, there is a risk of burns. Therefore, if... Figure 8 and Figure 11 As shown, the present invention also provides a plurality of heat exchange tubes 160 made of copper or aluminum at the bottom of the isolation member 140. Both ends of the heat exchange tubes 160 penetrate the top of the isolation member 140, with one end of the heat exchange tube 160 located near the door 101 and the other end located behind the fan blade 104. Furthermore, a plug 161 for sealing the end of the heat exchange tube 160 is fixedly provided on the side wall of the baffle frame 143, corresponding to the end of the heat exchange tube 160 near the door 101. In addition, the height of the plug 161 is lower than the height of the baffle frame 143, so that when the plug 161 is removed from the end of the heat exchange tube 160, the baffle frame 143 can be positioned within the opening 142, preventing the liquid in the liquid collection chamber 141 from evaporating and generating water vapor.

[0051] Correspondingly, the outer ring of the drive plate 146 is also provided with a second drive surface 148. When the second drive surface 148 presses the driven rod 144, the insertion rod 161 disengages from the end of the heat exchange tube 160, and the baffle frame 143 remains in the opening 142.

[0052] With the above design, after the item is dried, the second driving surface 148 is rotated to the top of the driven rod 144. The distance between the second driving surface 148 and the baffle frame 143 will be greater than the distance between the first driving surface 147 and the baffle frame 143. Therefore, the driven rod 144 will move upward accordingly. At this time, the baffle frame 143 drives the insertion rod 161 to move upward, so that the insertion rod 161 is disengaged from the end of the heat exchange tube 160, while the baffle frame 143 remains in the port 142. Thus, the other end of the heat exchange tube 160 is located behind the fan blade 104, where a negative pressure is applied. This draws the gas inside the heat exchange tube 160 into the fan blade 104. Meanwhile, the end of the heat exchange tube 160 near the door 101 draws the gas inside the inner liner 110. As the gas flows through the heat exchange tube 160, the gas inside the heat exchange tube 160 is cooled by the unheated liquid in the liquid collection chamber 141. The gas discharged through the inner liner 110 also cools the gas inside the inner liner 110.

[0053] It should be noted that when using the above method, sufficient cool water can be actively poured into the liquid collection chamber 141 before drying to improve the cooling efficiency. Alternatively, it can be done as follows: Figure 12 As shown, pour cool water onto the item to rinse it first, then collect the cool water. Details are as follows:

[0054] like Figure 12 As shown, the inner liner 110 is equipped with a spray plate 170. The bottom of the spray plate 170 is provided with multiple spray holes, and the top is provided with a liquid injection port 171 that penetrates the inner liner 110 and the outer shell 100. After the item is placed on top of the support frame 150, water is poured into the spray plate 170 through the liquid injection port 171. The water is preferably soft water (free of calcium and magnesium ions). The soft water will fall onto the surface of the item through the spray holes, washing away the original hard water on the surface of the item. The washed-down water enters the liquid collection chamber 141 through the outlet 142 for subsequent cooling.

[0055] The advantage of this is that before the item is dried, soft water is released through the spray plate 170 to wash away the original hard water on the surface of the item. On the one hand, after the item is dried, the scale on its surface will be further reduced. On the other hand, the water generated by the spray can enter the liquid collection chamber 141, so there is no need to add additional water to the liquid collection chamber 141.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric heating forced-air drying device, comprising a shell (100) and an inner liner (110), wherein the inner liner (110) is provided with a guide plate (120), a fan blade (104) and a heating tube (106), characterized in that: It also includes an air regulating assembly (130) located in front of the fan blade (104) and an isolation piece (140) located at the bottom of the inner liner (110). The air regulating assembly (130) is rotatably disposed on the side wall of the guide plate (120). The air regulating assembly (130) has a first air outlet for drying the item and a second air outlet for increasing the gas flow rate. The first air outlet and the second air outlet move to the front of the fan blade (104) by rotation. Before the drying operation, the second air outlet is in front of the fan blade (104) and blows off the moisture on the surface of the item by increasing the gas flow rate. The isolation element (140) divides the bottom of the inner liner (110) into a liquid collection chamber (141), which is used to receive water falling from the surface of the item. During the drying operation, the isolation element (140) isolates the liquid collection chamber (141) from the inside of the inner liner (110), so that the water in the liquid collection chamber (141) cannot participate in the drying operation.

2. The electric heating forced-air drying device according to claim 1, characterized in that: The air conditioning assembly (130) includes a ventilation plate (131) and a pressurizing component (132) attached to the side wall of the guide plate (120). The ventilation plate (131) and the pressurizing component (132) are fixedly connected, and a second motor (107) is provided at the connection point to drive the ventilation plate (131) and the pressurizing component (132) to the ventilation opening (121) opened on the side wall of the guide plate (120). The vent (121) is located directly in front of the fan blade (104).

3. The electric heating forced-air drying device according to claim 2, characterized in that: The multiple through holes provided on the side wall of the ventilation plate (131) are the first air outlets; The booster (132) is a tubular structure with a tapered tube (134) inside. The tapered tube (134) is a tapered structure with one end closed. The diameter of the tapered tube (134) is smaller than the diameter of the booster (132), so that a second air outlet is formed between the tapered tube (134) and the booster (132).

4. The electric heating forced-air drying device according to claim 1, characterized in that: The inner liner (110) is also provided with a support frame (150), which is rotatably mounted on a support arm (151) provided inside the inner liner (110); The outer ring of the support frame (150) is provided with a friction wheel (154), and the top of the friction wheel (154) is provided with a lever (153) that passes through the inner liner (110) and the outer shell (100). The friction wheel (154) is driven by the lever (153) to drive the support frame (150) to rotate.

5. The electric heating forced-air drying device according to claim 2, characterized in that: The isolation member (140) is a plate-shaped structure, and its outer ring is fixedly connected to the inner wall of the inner liner (110). The top of the isolation member (140) is provided with multiple through openings (142), and a baffle frame (143) is slidably arranged in the through opening (142). The baffle frame (143) is connected to a drive mechanism, which blocks or opens the opening (142) through the drive mechanism baffle frame (143).

6. The electric heating forced-air drying device according to claim 5, characterized in that: The bottom of the isolation component (140) is provided with a plurality of heat exchange tubes (160), one end of the heat exchange tube (160) passes through the part of the isolation component (140) near the door (101), and the other end passes through the part of the isolation component (140) behind the fan blade (104); The side wall of the baffle frame (143) is fixedly provided with a plug (161) for sealing the end of the heat exchange tube (160), and the height of the plug (161) is lower than the height of the baffle frame (143).

7. The electric heating forced-air drying apparatus according to claim 6, characterized in that: The drive mechanism includes a cylinder connected to the baffle frame (143).

8. The electric heating forced-air drying apparatus according to claim 6, characterized in that: The drive mechanism includes a driven rod (144) fixedly mounted on the top of the baffle frame (143) and a drive plate (146) fixedly mounted on the outer ring of the booster (132). The driven rod (144) is slidably disposed in the sliding seat (145) on the side wall of the guide plate (120), and a spring is provided between the top of the baffle frame (143) and the bottom of the sliding seat (145) to elastically connect the two. The outer ring of the drive plate (146) is provided with a first drive surface (147), which presses the driven rod (144) downward through the first drive surface (147).

9. The electric heating forced-air drying apparatus according to claim 8, characterized in that: The outer ring of the drive plate (146) is also provided with a second drive surface (148). When the second drive surface (148) presses the driven rod (144), the insertion rod (161) disengages from the end of the heat exchange tube (160), and the baffle frame (143) is in the opening (142).

10. The electric heating forced-air drying apparatus according to claim 5, characterized in that: The inner liner (110) is provided with a spray plate (170) inside, and the top is provided with a liquid inlet (171) that penetrates the inner liner (110) and the outer shell (100). Water is poured into the spray plate (170) to rinse the surface of the item. The rinsed water enters the liquid collection chamber (141) through the opening (142).

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