An electric drying oven

Abstract

The invention provides an electric drying oven, belonging to the technical field of drying ovens. The electric drying oven comprises a box body, an inner tank, a box body door and a controller, and also comprises a circulation mechanism and a cleaning mechanism. The invention controls two driving motors to rotate synchronously through the setting of the circulation mechanism when drying materials, and can make two blocking rings rotate synchronously. When two blast impellers simultaneously supply air to a first guide bin, the gas entering the first guide bin enters the inner tank through a first exhaust hole, and can horizontally supply air to the materials in the inner tank. When the two blast impellers simultaneously supply air to a second guide bin, the gas entering the second guide bin can enter the inner tank through a second exhaust hole, and can vertically supply air to the materials in the inner tank, thereby realizing the adjustment of horizontal and vertical air supply, avoiding the air supply in one direction for a long time, improving the fluidity of the gas, and improving the uniformity of the material drying effect and the drying efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of drying ovens, and in particular relates to an electric heating drying oven. Background Art

[0002] An electric drying oven is a device that converts electrical energy into thermal energy. It is widely used in scientific experiments, industrial production, medical treatment and other fields. It can provide a stable thermal environment for accelerating the drying process, curing materials, heat treatment and sterilization.

[0003] The Chinese patent application number CN202211162873.3 discloses an electric hot air drying box, which includes a box body, an inner collecting component arranged in the box body, and an outer collecting component arranged outside the box body; a placement cavity is provided in the box body, and a circulating air duct connected to the placement cavity is provided on the box body, the circulating air duct is connected to the inner collecting component, the inner collecting component is connected to the bottom end of the placement cavity, the circulating air duct is connected to the outer collecting component, and the outer collecting component is connected to the top end of the placement cavity. The invention cleans and classifies the dust during the hot air circulation process through the inner collecting component and the outer collecting component, which is convenient for cleaning and collecting the dust generated during the drying process. However, the existing electric drying ovens mainly adopt horizontal or vertical air supply, and are unable to change the direction of air supply during the drying process. Air supply in one direction is maintained for a long time. When there are many materials inside the drying oven, the part of the materials inside the drying oven facing the heat flow direction will be dried first, resulting in uneven heat drying effect of the materials, affecting the drying quality of the materials. In addition, due to the obstruction of the materials, it is difficult to quickly dry the leeward side of the materials, thereby reducing the drying efficiency.

[0004] Therefore, in order to solve the above problems, it is necessary to provide an electric heating drying oven. Summary of the invention

[0005] The object of the present invention is to provide an electric drying oven, aiming to solve the problem that the electric drying oven in the prior art cannot change the direction of air supply during the drying process and maintains air supply in one direction for a long time. When there are a lot of materials inside the drying oven, the part of the materials inside the drying oven facing the direction of heat flow will be dried first, resulting in uneven heating and drying effect of the materials, thereby affecting the drying quality of the materials.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An electric drying oven, comprising a box body, an inner tank, a box door and a controller, and also comprising:

[0008] A circulation mechanism, the circulation mechanism is arranged on the top of the inner container, and the circulation mechanism is used to adjust the air supply direction of the airflow inside the inner container;

[0009] A cleaning mechanism, the cleaning mechanism being arranged on the top of the inner tank, and being used to control the air supply direction of the circulation mechanism when the box door is open, so that the airflow inside the inner tank is blown toward the direction of the box door;

[0010] The circulation mechanism includes two adjusting chambers fixedly connected to the top of the inner tank, the two adjusting chambers are symmetrically arranged, the bottom of each adjusting chamber is provided with an air inlet connected to the interior of the inner tank, and the outer wall of each adjusting chamber is provided with two symmetrically arranged exhaust ports, and each adjusting chamber is slidably connected to the interior with a sealing ring, the sealing ring is arranged in a semicircular shape, and rotating the sealing ring can intermittently block the two exhaust ports.

[0011] Preferably, each of the adjusting chambers is provided with a blower impeller, the top of each of the blower impellers is fixedly connected to a connecting rod that passes through the adjusting chamber, the inner side of each of the sealing rings is fixedly connected to an internal gear, the interior of each of the adjusting chambers is rotatably connected to a rotating gear that meshes with the internal gear, and the outer wall of each of the connecting rods is fixedly connected to a toggle member that meshes with the rotating gear, and the toggle member can intermittently drive the corresponding rotating gear to rotate during rotation.

[0012] Preferably, an air supply bin is provided on the side of the inner tank away from the box door, a first guide bin connected to the interior of the air supply bin is fixedly connected to the top of the inner tank, a plurality of first exhaust holes connected to the interior of the inner tank are provided on the side of the air supply bin close to the box door, the gas entering the first guide bin can be supplied to the interior of the inner tank through the first exhaust holes, and two first guide tubes are fixedly connected to the outer wall of the first guide bin.

[0013] Preferably, the circulation mechanism also includes a second guide bin fixedly connected to the top of the inner tank, and a plurality of second exhaust holes connected to the interior of the inner tank are provided at the bottom of the second guide bin. The gas entering the second guide bin can be supplied to the interior of the inner tank through the second exhaust holes, and the outer wall of the second guide bin is fixedly connected with two second guide pipes.

[0014] Preferably, the cleaning mechanism includes a connecting tube fixedly connected to the top of the inner tank, one end of the connecting tube is communicated with the interior of the first guide bin, a partition plate is fixedly connected to the interior of the connecting tube, a through hole is provided at the top of the partition plate, a movable plate slidably connected to the inner wall of the connecting tube is provided above the partition plate, a plurality of guide holes are provided at the top of the movable plate, a sealing member for sealing the through holes is fixedly connected to the bottom of the movable plate, a first elastic member is connected between the bottom of the movable plate and the top of the partition plate, the first elastic member is sleeved on the outer wall of the sealing member, and the top of the movable plate is fixedly connected to a limiting member.

[0015] Preferably, the end of the connecting tube away from the first guide bin is fixedly connected to two symmetrically arranged third guide tubes, the ends of the two third guide tubes close to each other are connected to each other, and the other ends of the two third guide tubes are respectively connected to the interiors of the two second guide tubes, each of the third guide tubes is slidably connected to the interior of an isolating member, and a first limiting plate slidably connected to the corresponding inner wall of the third guide tube is provided on the side of each isolating member away from the second guide tube, each of the first limiting plates is provided with an air outlet, and an extrusion rod fixedly connected to the corresponding isolating member is provided on the inner side of each air outlet, and a second elastic member is connected between each isolating member and the corresponding first limiting plate.

[0016] Preferably, a fixing piece is fixedly connected to the top of the connecting tube, a accommodating cavity is opened inside the fixing piece, a piston plate is slidably connected inside the accommodating cavity, a first movable rod passing through the box body is fixedly connected to the side of the piston plate close to the box door, and a second limiting plate is fixedly connected to the end of the first movable rod away from the piston plate.

[0017] Preferably, a slide groove connected to the inside of the connecting tube is provided at the bottom of the fixing member, a connecting member slidably connected to the slide groove is provided on the limiting member, and a second movable rod fixedly connected to the connecting member is fixedly connected to the side of the piston plate away from the first movable rod.

[0018] Preferably, one end of the two first guide tubes away from the first guide bin is respectively connected to one of the exhaust ports on the two adjusting bins, and the two second guide tubes are respectively connected to the other exhaust ports on the two adjusting bins. Heating pipes are provided inside the air supply bin and inside the second guide bin, and two driving motors for driving the two connecting rods and the blower impeller to rotate are provided on the top of the box body.

[0019] Preferably, two symmetrically arranged wedge-shaped grooves are provided inside the limiting member, and the two extrusion rods slide inside the two wedge-shaped grooves respectively. An extrusion member for pushing the second limiting plate to move is provided on the top of the box door.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention, through the setting of the circulation mechanism, controls the two driving motors to rotate synchronously when drying materials, so that the two toggle members intermittently drive the two rotating gears to rotate synchronously during the rotation process, and can make the two sealing rings rotate synchronously. When the two blower impellers supply air to the first guide bin at the same time, the gas entering the first guide bin enters the interior of the inner liner through the first exhaust hole, and can supply air horizontally to the material inside the inner liner. When the two blower impellers supply air to the second guide bin at the same time, the gas entering the second guide bin can enter the interior of the inner liner through the second exhaust hole, and can supply air vertically to the material inside the inner liner, thereby realizing the adjustment of horizontal and vertical air supply, avoiding maintaining air supply in one direction for a long time, improving the fluidity of the gas, and improving the uniformity and drying efficiency of the material drying effect.

[0022] The present invention provides a cleaning mechanism. After the material is dried, the driving motor is kept rotating and the box door is opened. The extrusion member will be separated from the contact with the second limit plate, and the first elastic member will be elastically reset, so that the blocking member can be separated from the blocking of the through hole, and the two extrusion rods can be moved to the highest point inside the two wedge-shaped grooves, so that the two isolation members can enter the interior of the two second guide tubes, so that the gas entering the interior of the second guide tube enters the interior of the third guide tube, and the gas entering the interior of the third guide tube can enter the interior of the first guide bin through the guide hole and the through hole, so that the gas is blown toward the direction of the box door through the first exhaust hole, and the impurities in the liner can be blown to the outside. Therefore, when the box door is opened, no matter whether air is supplied to the first guide bin or the second guide bin, the first exhaust hole can always be kept blowing in the direction of the box door, so that the impurities in the liner can be effectively and quickly blown to the outside, thereby ensuring the subsequent drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is the structural distribution diagram of the circulation mechanism and the cleaning mechanism of the present invention;

[0026] Figure 3It is a schematic diagram of the structure of the inner container of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the air supply bin of the present invention;

[0028] Figure 5 is a schematic structural diagram of the first flow guide tube of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the regulating chamber of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the air outlet of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the blocking ring of the present invention;

[0032] Fig. 9 This is a schematic diagram of the internal structure of the second flow guide bin of the present invention;

[0033] Fig.10 is a schematic structural diagram of the second flow guide tube of the present invention;

[0034] Fig.11 It is a schematic diagram of the overall structure of the connecting pipe and the fixing member of the present invention;

[0035] Fig.12 is a schematic diagram of the internal structure of the third flow guide tube of the present invention;

[0036] Fig.13 It is a structural schematic diagram of the position limiting member of the present invention;

[0037] Fig.14 It is a schematic diagram of the internal structure of the connecting pipe of the present invention;

[0038] Fig.15 It is a schematic diagram of the internal structure of the fixing member of the present invention.

[0039] In the figure: 1, box body; 11, liner; 12, box door; 13, controller; 2, circulation mechanism; 21, adjustment chamber; 22, air inlet; 23, air outlet; 24, blocking ring; 25, blower impeller; 26, connecting rod; 27, internal gear; 28, rotating gear; 29, toggle member; 210, air supply chamber; 211, first guide chamber; 212, first exhaust hole; 213, first guide pipe; 214, second guide chamber; 215, second exhaust hole; 216, second guide pipe; 217, heating pipe; 3, cleaning mechanism; 31, connecting pipe; 32 , partition plate; 33, through hole; 34, movable plate; 35, guide hole; 36, blocking member; 37, first elastic member; 38, limit member; 39, third guide tube; 310, isolation member; 311, first limit plate; 312, air outlet; 313, extrusion rod; 314, second elastic member; 315, fixing member; 316, accommodating chamber; 317, piston plate; 318, first movable rod; 319, second limit plate; 320, slide groove; 321, connecting member; 322, second movable rod; 323, wedge groove; 324, extrusion member; 4, driving motor. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1

[0042] Existing electric drying ovens mainly use horizontal or vertical air supply, and are unable to change the direction of the air supply during the drying process. The air supply is maintained in one direction for a long time. When there are a lot of materials inside the drying oven, the part of the material inside the drying oven facing the heat flow direction will be dried first, resulting in uneven heat drying of the material, affecting the drying quality of the material. In addition, due to the obstruction of the material, it is difficult to quickly dry the leeward side of the material, reducing the drying efficiency.

[0043] See also Figure 1-Figure 8 The present invention provides the following technical solutions: an electric drying oven, comprising a box body 1, an inner tank 11, a box door 12 and a controller 13, and also comprising: a circulation mechanism 2, the circulation mechanism 2 is arranged at the top of the inner tank 11, and the circulation mechanism 2 is used to adjust the air supply direction of the airflow inside the inner tank 11; a cleaning mechanism 3, the cleaning mechanism 3 is arranged at the top of the inner tank 11, and when the box door 12 is opened, the cleaning mechanism 3 is used to control the air supply direction of the circulation mechanism 2, so that the airflow inside the inner tank 11 is blown toward the box door 12.

[0044] The electric drying oven also includes a temperature control system, and the controller 13 can adjust the temperature of the heating tube 217. These are all existing technologies and will not be described in detail here.

[0045] The circulation mechanism 2 includes two regulating chambers 21 fixedly connected to the top of the inner tank 11, the two regulating chambers 21 are symmetrically arranged, the bottom of each regulating chamber 21 is provided with an air inlet 22 connected to the interior of the inner tank 11, the outer wall of each regulating chamber 21 is provided with two symmetrically arranged air outlets 23, and each regulating chamber 21 is slidably connected to a blocking ring 24. Figure 8 As shown, the blocking ring 24 is arranged in a semicircular shape, and rotating the blocking ring 24 can intermittently block the two exhaust ports 23 .

[0046] Since the blocking ring 24 is arranged in a semicircular shape, the blocking state of the two exhaust ports 23 can be changed only by rotating it 180°, that is, when the blocking ring 24 blocks one exhaust port 23, the other exhaust port 23 can be blocked only after rotating it 180°.

[0047] like Figure 6 As shown, each regulating chamber 21 is provided with a blower impeller 25 inside, and the top of each blower impeller 25 is fixedly connected with a connecting rod 26 that passes through the regulating chamber 21, and the inner side of each sealing ring 24 is fixedly connected with an internal gear 27, and the inside of each regulating chamber 21 is rotatably connected with a rotating gear 28 that meshes with the internal gear 27, and the outer wall of each connecting rod 26 is fixedly connected with a toggle member 29 that meshes with the rotating gear 28, and the toggle member 29 can intermittently drive the corresponding rotating gear 28 to rotate during rotation.

[0048] When the impeller 25 rotates, the gas inside the inner container 11 can enter from the air inlet 22 and enter into the air outlet 23 due to the centrifugal force of the rotation of the impeller 25 .

[0049] An air supply bin 210 is provided on the side of the inner liner 11 away from the cabinet door 12, and a first guide bin 211 connected to the interior of the air supply bin 210 is fixedly connected to the top of the inner liner 11. A plurality of first exhaust holes 212 connected to the interior of the inner liner 11 are provided on the side of the air supply bin 210 close to the cabinet door 12. The gas entering the first guide bin 211 can be supplied to the interior of the inner liner 11 through the first exhaust holes 212, and the outer wall of the first guide bin 211 is fixedly connected with two first guide pipes 213.

[0050] The gas entering the first guide chamber 211 can enter the inner liner 11 through the first exhaust hole 212 , and can horizontally supply air to the material inside the inner liner 11 .

[0051] The circulation mechanism 2 also includes a second guide chamber 214 fixedly connected to the top of the inner tank 11. The bottom of the second guide chamber 214 is provided with a plurality of second exhaust holes 215 connected to the interior of the inner tank 11. The gas entering the second guide chamber 214 can supply air to the interior of the inner tank 11 through the second exhaust holes 215. The outer wall of the second guide chamber 214 is fixedly connected with two second guide pipes 216.

[0052] The gas entering the second guide chamber 214 can enter the interior of the inner liner 11 through the second exhaust hole 215 , and can vertically supply air to the material inside the inner liner 11 .

[0053] One end of the two first guide pipes 213 away from the first guide chamber 211 is respectively connected to one of the exhaust ports 23 on the two adjusting chambers 21, and the two second guide pipes 216 are respectively connected to the other exhaust ports 23 on the two adjusting chambers 21. The interior of the air supply chamber 210 and the interior of the second guide chamber 214 are both provided with heating pipes 217. Two driving motors 4 for driving the two connecting rods 26 and the blower impeller 25 to rotate are provided on the top of the box body 1. The two driving motors 4 are both electrically connected to the controller 13, and the controller 13 can control the two driving motors 4 to rotate synchronously.

[0054] When the toggle member 29 rotates one circle, the internal gear 27 can rotate a certain distance by rotating the gear 28. When the toggle member 29 keeps rotating, the sealing ring 24 can intermittently block the two exhaust ports 23 on the regulating chamber 21. The controller 13 can control the two driving motors 4 to rotate synchronously, so as to drive the two sealing rings 24 to rotate synchronously, thereby achieving synchronous blocking of the exhaust ports 23 on the same side of each regulating chamber 21, and enabling the two blower impellers 25 to supply air to the first guide chamber 211 or the second guide chamber 214 at the same time.

[0055] It should be noted that when drying the material, the two driving motors 4 are controlled to rotate synchronously, driving the two connecting rods 26 and the blast impeller 25 to rotate synchronously, and driving the two toggle members 29 to rotate synchronously, so that the two toggle members 29 intermittently drive the two rotating gears 28 to rotate synchronously during the rotation process. When the two blast impellers 25 simultaneously supply air to the first guide bin 211, the gas entering the first guide bin 211 will be heated by the heating pipe 217 and enter the interior of the inner liner 11 through the first exhaust hole 212, which can dredge the material inside the inner liner 11. When the two blower impellers 25 simultaneously supply air to the second guide chamber 214, the gas entering the second guide chamber 214 can be heated by the heating tube 217 and enter the inner liner 11 through the second exhaust hole 215, so as to blow air vertically to the material inside the inner liner 11. Therefore, during the rotation of the two driving motors 4, the horizontal and vertical air supply modes can be intermittently adjusted to avoid maintaining air supply in one direction for a long time, thereby improving the fluidity of the gas and effectively improving the uniformity and drying efficiency of the material drying effect.

[0056] The present invention controls the two driving motors 4 to rotate synchronously when drying materials through the setting of the circulation mechanism 2, so that the two toggle members 29 intermittently drive the two rotating gears 28 to rotate synchronously during the rotation process, and can make the two sealing rings 24 rotate synchronously. When the two blower impellers 25 simultaneously supply air to the first guide bin 211, the gas entering the first guide bin 211 enters the inner liner 11 through the first exhaust hole 212, and can horizontally supply air to the material inside the inner liner 11. When the two blower impellers 25 simultaneously supply air to the second guide bin 214, the gas entering the second guide bin 214 can enter the inner liner 11 through the second exhaust hole 215, and can vertically supply air to the material inside the inner liner 11, thereby realizing the adjustment of horizontal and vertical air supply, avoiding maintaining air supply in one direction for a long time, improving the fluidity of the gas, and improving the uniformity and drying efficiency of the material drying effect.

[0057] Embodiment 2

[0058] Based on the above embodiment, some relatively wet materials will absorb impurities in the air when placed in the drying box. When the drying box heats the relatively wet materials, the impurities adsorbed on the surface of the materials will be scattered to various parts of the inner tank with the gas circulation during the drying process. Long-term use will cause more impurities in the inner tank, affecting its use.

[0059] See also Figure 9-Figure 15The cleaning mechanism 3 includes a connecting tube 31 fixedly connected to the top of the inner tank 11, one end of the connecting tube 31 is connected to the inside of the first guide chamber 211, a partition plate 32 is fixedly connected to the inside of the connecting tube 31, a through hole 33 is provided on the top of the partition plate 32, a movable plate 34 slidably connected to the inner wall of the connecting tube 31 is provided above the partition plate 32, a plurality of guide holes 35 are provided on the top of the movable plate 34, a blocking member 36 for blocking the through hole 33 is fixedly connected to the bottom of the movable plate 34, a first elastic member 37 is connected between the bottom of the movable plate 34 and the top of the partition plate 32, the first elastic member 37 is sleeved on the outer wall of the blocking member 36, and a limiting member 38 is fixedly connected to the top of the movable plate 34.

[0060] like Fig.12 As shown, one end of the connecting tube 31 away from the first guide bin 211 is fixedly connected to two symmetrically arranged third guide tubes 39, the ends of the two third guide tubes 39 close to each other are connected to each other, and the other ends of the two third guide tubes 39 are respectively connected to the inside of the two second guide tubes 216, and each third guide tube 39 is slidably connected to an isolating member 310, and each isolating member 310 is provided with a first limiting plate 311 slidably connected to the inner wall of the corresponding third guide tube 39 on the side away from the second guide tube 216, and each first limiting plate 311 is provided with an air outlet 312, and an extrusion rod 313 fixedly connected to the corresponding isolating member 310 is provided on the inner side of each air outlet 312, and a second elastic member 314 is connected between each isolating member 310 and the corresponding first limiting plate 311.

[0061] like Fig.15 As shown, a fixing member 315 is fixedly connected to the top of the connecting tube 31, a accommodating chamber 316 is opened inside the fixing member 315, a piston plate 317 is slidably connected inside the accommodating chamber 316, a first movable rod 318 penetrating through the box body 1 is fixedly connected to the side of the piston plate 317 close to the box door 12, a second limiting plate 319 is fixedly connected to the end of the first movable rod 318 away from the piston plate 317, a sliding groove 320 connected to the inside of the connecting tube 31 is opened at the bottom of the fixing member 315, a connecting member 321 slidably connected to the sliding groove 320 is provided on the limiting member 38, and a second movable rod 322 fixedly connected to the connecting member 321 is fixedly connected to the side of the piston plate 317 away from the first movable rod 318.

[0062] The purpose of providing the piston plate 317 is to prevent the gas inside the connecting pipe 31 from entering the accommodating chamber 316 and causing gas leakage to the outside.

[0063] Two symmetrically arranged wedge-shaped grooves 323 are provided inside the limiting member 38 , and the two extrusion rods 313 slide inside the two wedge-shaped grooves 323 respectively. An extrusion member 324 for pushing the second limiting plate 319 to move is provided on the top of the box door 12 .

[0064] It should be noted that the isolation member 310 is L-shaped. In a normal state, that is, when the box door 12 is in an open state, the side of the limit member 38 away from the movable plate 34 contacts the inner wall of the side of the third guide tube 39 away from the connecting tube 31, the two extrusion rods 313 are located at the highest point inside the two wedge-shaped grooves 323, the second elastic member 314 is in a stretched state, and the two isolation members 310 are respectively located inside the two second guide tubes 216, and the side of the two isolation members 310 away from the extrusion rods 313 can be away from the second guide tube 216. The inner wall on the side away from the connecting tube 31 is in close contact to form a seal, which can allow the gas entering the second guide tube 216 to enter the third guide tube 39. At this time, the sealing member 36 is separated from the sealing of the through hole 33, and the gas entering the third guide tube 39 can pass through the gap between the outer side of the limit member 38 and the inner wall of the connecting tube 31, and enter the first guide chamber 211 through the guide hole 35 and the through hole 33, so that the gas is blown toward the direction of the box door 12 through the first exhaust hole 212, which can blow impurities in the inner tank 11 to the outside.

[0065] In actual use, after the material is placed inside the drying box, the box door 12 needs to be closed. During the closing process of the box door 12, the extrusion piece 324 on the top of the box door 12 can push the second limit plate 319 to move in the direction close to the box body 1, and drive the piston plate 317 to move through the first movable rod 318, so that the second movable rod 322 can drive the connecting piece 321 and the limit piece 38 to move in the direction away from the box body 1, and the two extrusion rods 313 can slide toward the lowest point inside the two wedge-shaped grooves 323, and further move the movable plate 34 in the direction close to the partition plate 32, which can squeeze the first elastic rod 318 to move the second limit plate 319 in the direction close to the partition plate 32. When the box door 12 is completely closed, the two extrusion rods 313 are just located at the lowest point of the two wedge-shaped grooves 323, and the blocking member 36 can block the through hole 33. The two isolation members 310 can completely enter the interior of the third guide tube 39 under the elastic reset of the second elastic member 314. At this time, the two drive motors 4 rotate synchronously, so that the two blast impellers 25 can simultaneously supply air to the first guide bin 211 or the second guide bin 214, so as to realize the change of the air supply direction; when the material is dried, the drive motor 4 is kept rotating, and the box door 12 is opened, and the extrusion rods 313 at the top of the box door 12 are closed. The pressing piece 324 will be out of contact with the second limiting plate 319, and the first elastic piece 37 will be elastically reset, so that the movable plate 34 can move away from the partition plate 32, and the second limiting plate 319 can be driven to move away from the box body 1, so that the blocking piece 36 can be out of blocking the through hole 33, and further the two extrusion rods 313 can be returned to the highest point inside the two wedge-shaped grooves 323, and then the second elastic piece 314 can be stretched, so that the two isolation pieces 310 can enter the inside of the two second guide tubes 216, and the gas entering the second guide tube 216 can enter the inside of the third guide tube 39. The gas entering the third guide tube 39 can pass through the gap between the limiter 38 and the connecting tube 31, and enter the first guide chamber 211 through the guide hole 35 and the through hole 33, so that the gas is blown toward the direction of the cabinet door 12 through the first exhaust hole 212, and the impurities in the inner tank 11 can be blown to the outside. Therefore, when the cabinet door 12 is opened, whether air is supplied to the first guide chamber 211 or to the second guide chamber 214, the first exhaust hole 212 can always be kept blowing in the direction of the cabinet door 12, and the impurities inside the inner tank 11 can be effectively and quickly blown to the outside.

[0066] The present invention provides a cleaning mechanism 3. After the material is dried, the driving motor 4 is kept rotating and the box door 12 is opened. The extrusion member 324 will be separated from the contact with the second limit plate 319. The first elastic member 37 is elastically reset, so that the blocking member 36 can be separated from the blocking of the through hole 33. The two extrusion rods 313 can be moved to the highest point inside the two wedge-shaped grooves 323, and the two isolation members 310 can enter the inside of the two second guide tubes 216. The gas entering the second guide tube 216 enters the inside of the third guide tube 39 and enters the second guide tube 216. The gas inside the three guide tubes 39 can enter the first guide bin 211 through the guide holes 35 and the through holes 33, so that the gas is blown toward the direction of the cabinet door 12 through the first exhaust hole 212, and the impurities in the liner 11 can be blown to the outside. Therefore, when the cabinet door 12 is opened, no matter whether air is supplied to the first guide bin 211 or the second guide bin 214, the first exhaust hole 212 can always be kept blowing toward the cabinet door 12, and the impurities inside the liner 11 can be effectively and quickly blown to the outside, thereby ensuring the subsequent drying effect.

[0067] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electric drying oven, comprising a box body (1), an inner tank (11), a box door (12) and a controller (13), characterized in that: Also includes: A circulation mechanism (2), the circulation mechanism (2) being arranged on the top of the inner container (11), the circulation mechanism (2) being used to adjust the air supply direction of the airflow inside the inner container (11); a cleaning mechanism (3), the cleaning mechanism (3) being arranged on the top of the inner container (11); and when the cabinet door (12) is open, the cleaning mechanism (3) is used to control the air supply direction of the circulation mechanism (2) so that the airflow inside the inner container (11) is blown in the direction of the cabinet door (12); The circulation mechanism (2) comprises two regulating chambers (21) fixedly connected to the top of the inner liner (11), the two regulating chambers (21) being symmetrically arranged, the bottom of each regulating chamber (21) being provided with an air inlet (22) connected to the interior of the inner liner (11), the outer wall of each regulating chamber (21) being provided with two symmetrically arranged air outlets (23), the interior of each regulating chamber (21) being slidably connected with a blocking ring (24), the blocking ring (24) being arranged in a semicircular shape, and the two air outlets (23) can be intermittently blocked by rotating the blocking ring (24); Each of the regulating chambers (21) is provided with a blast impeller (25) inside, and a connecting rod (26) penetrating the regulating chamber (21) is fixedly connected to the top of each of the blast impellers (25), and an internal gear (27) is fixedly connected to the inner side of each of the sealing rings (24). A rotating gear (28) meshing with the internal gear (27) is rotatably connected to the inside of each of the regulating chambers (21), and a toggle member (29) meshing with the rotating gear (28) is fixedly connected to the outer wall of each of the connecting rods (26), and the toggle member (29) can intermittently drive the corresponding rotating gear (28) to rotate during its rotation; An air supply bin (210) is provided on a side of the inner container (11) away from the box door (12); a first flow guide bin (211) which is in communication with the interior of the air supply bin (210) is fixedly connected to the top of the inner container (11); a plurality of first exhaust holes (212) which are in communication with the interior of the inner container (11) are provided on a side of the air supply bin (210) which is close to the box door (12); gas entering the interior of the first flow guide bin (211) can be supplied to the interior of the inner container (11) through the first exhaust holes (212); and two first flow guide pipes (213) are fixedly connected to the outer wall of the first flow guide bin (211); The circulation mechanism (2) further comprises a second flow guide chamber (214) fixedly connected to the top of the inner container (11); a plurality of second exhaust holes (215) connected to the interior of the inner container (11) are provided at the bottom of the second flow guide chamber (214); gas entering the interior of the second flow guide chamber (214) can be supplied to the interior of the inner container (11) through the second exhaust holes (215); and two second flow guide pipes (216) are fixedly connected to the outer wall of the second flow guide chamber (214); The cleaning mechanism (3) comprises a connecting tube (31) fixedly connected to the top of the inner tank (11), one end of the connecting tube (31) being in communication with the interior of the first flow guide chamber (211), a partition plate (32) being fixedly connected to the interior of the connecting tube (31), a through hole (33) being provided at the top of the partition plate (32), a movable plate (34) being slidably connected to the inner wall of the connecting tube (31) being provided above the partition plate (32), a plurality of flow guide holes (35) being provided at the top of the movable plate (34), a blocking member (36) for blocking the through hole (33) being fixedly connected to the bottom of the movable plate (34), a first elastic member (37) being connected between the bottom of the movable plate (34) and the top of the partition plate (32), the first elastic member (37) being sleeved on the outer wall of the blocking member (36), and a limiting member (38) being fixedly connected to the top of the movable plate (34); One end of the connecting pipe (31) away from the first flow guide chamber (211) is fixedly connected to two symmetrically arranged third flow guide pipes (39); the ends of the two third flow guide pipes (39) close to each other are connected to each other; the other ends of the two third flow guide pipes (39) are respectively connected to the inside of the two second flow guide pipes (216); each of the third flow guide pipes (39) is slidably connected to an isolating member (310); a first limiting plate (311) slidably connected to the inner wall of the corresponding third flow guide pipe (39) is provided on a side of each of the isolating members (310) away from the second flow guide pipe (216); each of the first limiting plates (311) is provided with an air outlet (312); an extrusion rod (313) fixedly connected to the corresponding isolating member (310) is provided on the inner side of each of the air outlet holes (312); and a second elastic member (314) is connected between each of the isolating members (310) and the corresponding first limiting plate (311); A fixing member (315) is fixedly connected to the top of the connecting pipe (31), a receiving chamber (316) is provided inside the fixing member (315), a piston plate (317) is slidably connected inside the receiving chamber (316), a first movable rod (318) penetrating the box (1) is fixedly connected to the side of the piston plate (317) close to the box door (12), and a second limit plate (319) is fixedly connected to the end of the first movable rod (318) away from the piston plate (317); A sliding groove (320) communicating with the interior of the connecting pipe (31) is provided at the bottom of the fixing member (315); a connecting member (321) slidably connected to the sliding groove (320) is provided on the limiting member (38); a second movable rod (322) fixedly connected to the connecting member (321) is fixedly connected to a side of the piston plate (317) away from the first movable rod (318); One end of the two first flow guide pipes (213) away from the first flow guide chamber (211) is respectively connected to one of the exhaust ports (23) on the two regulating chambers (21); the two second flow guide pipes (216) are respectively connected to the other exhaust ports (23) on the two regulating chambers (21); a heating pipe (217) is provided inside the air supply chamber (210) and inside the second flow guide chamber (214); and two driving motors (4) for driving the two connecting rods (26) and the blower impeller (25) to rotate are provided on the top of the box body (1); The limiting member (38) has two symmetrically arranged wedge-shaped grooves (323) formed therein, the two extrusion rods (313) slide respectively inside the two wedge-shaped grooves (323), and the top of the box door (12) is provided with an extrusion member (324) for pushing the second limiting plate (319) to move.

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