High-efficiency air conveying type constant-temperature drying box

Abstract

The utility model relates to the technical field of drying boxes, in particular to a high-efficiency air conveying type constant-temperature drying box which comprises a box body and is characterized in that the bottom of the box body is fixedly connected with an air collecting box, the back face of the box body and the back face of the air collecting box are fixedly connected with a heat exchange box, and a door plate is hinged to the front side of the box body. An exhaust fan is fixedly installed at the bottom of the box body, an air guide pipe is fixedly installed in the air collection box, an air inlet pipe is fixedly connected to the top of the heat exchange box, an air inlet nozzle is fixedly connected to the end, away from the heat exchange box, of the air inlet pipe, and the air inlet nozzle is fixedly connected to the top of the box body. And an electric heating wire net is fixedly connected to the interior of the air inlet nozzle. The waste heat recycling device has the advantages that when air with heat in the box body circulates, air newly entering the box body can be preheated, so that waste heat of waste gas can be recycled, the waste gas with water vapor heats the new air and then is directly exhausted, and drying of materials cannot be affected.

Description

Technical Field

[0001] This utility model relates to the field of drying oven technology, and in particular to a high-efficiency air-cooled constant temperature drying oven. Background Technology

[0002] Constant temperature drying ovens are widely used in industry, mainly for drying materials. For example, before testing the parameters and performance of aluminum powder, aluminum powder samples need to be placed in a constant temperature drying oven for drying.

[0003] A thermostatic electric drying oven disclosed in Chinese patent CN222069129U solves the problems of ineffective heat transfer to the dried items and the inability to circulate the hot air inside the drying oven, which increases energy loss and reduces drying efficiency. However, while solving these problems, this thermostatic electric drying oven has the following drawbacks:

[0004] When the hot air is circulated, it is not dried. Therefore, the water vapor generated by heating the material will re-enter the chamber and come into contact with the material, making it difficult to achieve the purpose of drying the material. Utility Model Content

[0005] The purpose of this utility model is to at least solve one of the technical defects described in the background art.

[0006] Therefore, one objective of this utility model is to propose a high-efficiency air-circulating constant temperature drying oven, which aims to solve the problem that in existing electric heating constant temperature drying ovens, the hot air circulation does not result in drying, thus making it difficult to dry materials.

[0007] To achieve the above objectives, one embodiment of the present invention provides a high-efficiency air-cooled constant temperature drying oven, including a box body, an air collection box fixedly connected to the bottom of the box body, a heat exchange box fixedly connected to the back of the box body and the air collection box, and a door panel hinged to the front of the box body.

[0008] An exhaust fan is fixedly installed at the bottom of the box, an air guide pipe is fixedly installed inside the air collection box, an air inlet pipe is fixedly connected to the top of the heat exchange box, an air inlet nozzle is fixedly connected to the end of the air inlet pipe away from the heat exchange box, the air inlet nozzle is fixedly connected to the top of the box, and an electric heating wire mesh is fixedly connected inside the air inlet nozzle.

[0009] Multiple serpentine tubes are fixedly installed inside the heat exchange box. One end of each serpentine tube extends into the interior of the gas collection box, and the other end extends into the exterior of the heat exchange box.

[0010] Multiple support blocks are fixedly connected to the lower part of the box body, and a container groove is attached to the top of the support blocks.

[0011] The beneficial effects are as follows: After the exhaust fan is started, outside air enters the heat exchange box through the air guide pipe, and then enters the box body through the air inlet pipe and air inlet nozzle. The air is heated by the electric heating wire mesh in the air inlet, so that the heated air can heat and dry the material in the box. The air and the water vapor generated in the box enter the gas collection box, and then are discharged to the outside through the serpentine pipe. The residual heat of the air in the gas collection box can preheat the air in the air guide pipe. The air in the gas collection box passes through the heat exchange box through the serpentine pipe, so that the air squeezed into the heat exchange box through the air guide pipe can be reheated. Therefore, the purpose of heat energy recovery can be achieved. Moreover, the air containing water vapor is discharged through the serpentine pipe and will not re-enter the box body, so it will not affect the drying of the material and ensure that the material can be dried quickly.

[0012] Preferably, in any of the above embodiments, fins are fixedly connected to the outer surfaces of the plurality of serpentine tubes, and through holes are formed on the surface of the fins.

[0013] The beneficial effects are as follows: the residual heat of the air inside the serpentine tube can be conducted to the fins, and then conducted to the air inside the heat exchange box through the fins, thereby accelerating the heat exchange efficiency. In addition, the through holes allow the air inside the heat exchange box to flow smoothly between the fins, thereby further accelerating the heat exchange efficiency.

[0014] Preferably, in any of the above embodiments, the container tank includes a filter plate, and a filter ring is fixedly connected to the outer surface of the top of the filter plate.

[0015] The beneficial effects are as follows: the filter plates and filter rings have tiny pores on their surfaces, which allow air to circulate. As a result, hot air can penetrate the container tank, and during the drying process of the material in the container tank, water vapor can be discharged to the sides and downwards, ensuring smooth water vapor flow and improving drying efficiency.

[0016] Preferably, in the above scheme, a power box is fixedly connected to the bottom of the box, a motor is fixedly installed inside the power box, a drive shaft is fixedly connected to the output end of the motor, the drive shaft passes through the inside of the box, a sleeve is fixedly connected to the middle of the filter plate, a horizontal plate is detachably connected to the top of the drive shaft, and multiple levers are fixedly connected to the bottom of the horizontal plate.

[0017] The beneficial effects are as follows: when drying powdery items such as aluminum powder, the motor can drive the horizontal plate to rotate, causing the lever to move the aluminum powder in the container slot, thereby allowing the aluminum powder to come into full contact with the hot air, and allowing the hot air to penetrate through the aluminum powder, thus accelerating the drying efficiency of the aluminum powder.

[0018] Preferably, in the above scheme, a plurality of limiting grooves are fixedly connected to the bottom edge of the filter plate, and the limiting grooves are sleeved on the outer surface of the support block.

[0019] The beneficial effect is that it avoids the problem of the container tank rotating due to aluminum powder during the rotation of the lever.

[0020] Preferably, the drive shaft has a slot at its top end, and an L-shaped groove communicating with the slot is formed on the outer surface of the top end of the drive shaft. A rod is fixedly connected to the lower part of the middle of the cross plate, and a locking block is fixedly connected to the outer surface of the rod.

[0021] The beneficial effects are: it facilitates the disassembly and assembly of the horizontal plate, thus making it easier to disassemble and assemble the container tank when drying aluminum powder. After drying, the container tank can be quickly disassembled and the aluminum powder poured out, improving practicality.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the container tank of this utility model.

[0027] Figure 4 This is a schematic diagram of the structure of the horizontal plate of this utility model.

[0028] The components are as follows: 1. Box body, 11. Door panel, 12. Exhaust fan, 13. Support block, 14. Air inlet, 15. Heating wire mesh, 2. Air collection box, 21. Air guide pipe, 22. Power box, 23. Motor, 24. Drive shaft, 25. L-shaped slot, 26. Drain pipe, 3. Heat exchange box, 31. Serpentine tube, 32. Air inlet pipe, 33. Fins, 34. Through hole, 4. Container tank, 41. Filter plate, 42. Filter ring, 43. Sleeve, 44. Limiting groove, 5. Horizontal plate, 51. Toggle rod, 52. Insert rod, 53. Locking block. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] This invention provides a high-efficiency air-cooled constant temperature drying oven.

[0032] Example 1:

[0033] like Figure 1 As shown, it includes a box body 1, a gas collection box 2 is fixedly connected to the bottom of the box body 1, a heat exchange box 3 is fixedly connected to the back of the box body 1 and the gas collection box 2, and a door panel 11 is hinged to the front of the box body 1.

[0034] like Figure 2 As shown, an exhaust fan 12 is fixedly installed at the bottom of the housing 1. The exhaust fan 12 can discharge the air inside the housing 1 downwards into the air collection box 2. An air guide pipe 21 is fixedly installed inside the air collection box 2. One end of the air guide pipe 21 extends to the front of the air collection box 2, allowing outside air to enter the air guide pipe 21. The other end of the air guide pipe 21 extends into the heat exchange box 3, thereby introducing outside air into the heat exchange box 3. An air inlet pipe 32 is fixedly connected to the top of the heat exchange box 3. The end of the air inlet pipe 32 away from the heat exchange box 3 is fixedly installed... An air inlet 14 is fixedly connected to the top of the chamber 1. The top of the chamber 1 has an air inlet hole that matches the air inlet 14. Air in the heat exchange chamber 3 can be sent into the chamber 1 through the air inlet pipe 32 and the exhaust pipe 14. An electric heating wire mesh 15 is fixedly connected inside the air inlet 14. When the air in the air inlet pipe 32 enters the air inlet 14, it comes into contact with the electric heating wire mesh 15, so that the electric heating wire mesh 15 can heat the air and make the air entering the chamber 1 high temperature air.

[0035] like Figure 2As shown, multiple serpentine tubes 31 are fixedly installed inside the heat exchange box 3. One end of the serpentine tube 31 extends into the inside of the air collection box 2, and the other end extends into the outside of the heat exchange box 3. The exhaust fan 12 sends the air in the box 1 into the air collection box 2, and the air pressure in the air collection box 2 increases, so that the air in the air collection box 2 can pass through the serpentine tubes 31 from the inside of the heat exchange box 3, and then be discharged to the outside of the heat exchange box 3 through the serpentine tubes 31.

[0036] like Figure 1 As shown, multiple support blocks 13 are fixedly connected to the bottom of the box 1. A container trough 4 is attached to the top of the support block 13. The container trough 4 is used to place items that need to be dried. The support blocks 13 keep a certain distance between the container trough 4 and the bottom of the box 1, which is conducive to ventilation under the container trough 4.

[0037] Preferred, such as Figure 3 As shown, the container tank 4 includes a filter plate 41, and a filter ring 42 is fixedly connected to the outer surface of the top of the filter plate 41, so that the container tank 4 is ventilated around and at the bottom. Therefore, after the items in the container tank 4 are heated, the evaporated water vapor can be dispersed downwards and around, ensuring that the water vapor can be quickly discharged to the outside of the container tank 4.

[0038] Preferred, such as Figure 2 As shown, multiple serpentine tubes 31 have fins 33 fixedly connected to their outer surfaces. Air with a certain temperature inside the serpentine tubes 31 can conduct heat to the fins, and then conduct it to the air inside the heat exchange box 3 through the fins, thereby accelerating the heat transfer efficiency. Furthermore, the surface of the fins 33 is provided with through holes 34, and the air entering the heat exchange box 3 through the air guide pipe 21 can flow between the fins 33 through the through holes 34, thereby ensuring that the air can fully contact the fins 33 and further improving the heat exchange efficiency.

[0039] Specifically, such as Figure 1 As shown, a drain pipe 26 is provided at the bottom of one side of the gas collection box 2, and a valve is provided on the drain pipe 26. Water vapor will condense in the gas collection box 2. When there is a certain amount of water in the gas collection box 2, the water can be discharged from the drain pipe 6 by opening the valve.

[0040] Example 2:

[0041] like Figure 1-4As shown, based on Embodiment 1, a power box 22 is fixedly connected to the bottom of the box 1. A motor 23 is fixedly installed inside the power box 22. A transmission shaft 24 is fixedly connected to the output end of the motor 23. The transmission shaft 24 extends through the interior of the box 1. A sleeve 43 is fixedly connected to the middle of the filter plate 41. The filter plate 41 is sleeved on the outer surface of the transmission shaft 24 through the sleeve 43, so that the transmission shaft 24 can pass through the container tank 4. A horizontal plate 5 is detachably connected to the top of the transmission shaft 24. Multiple levers 51 are fixedly connected to the bottom of the horizontal plate 5. The levers 51 on both sides of the transmission shaft 24 are staggered. When the container tank 4 contains a powdery substance similar to aluminum powder, the motor 23 can drive the horizontal plate 5 to rotate through the transmission shaft 24. The levers 51 below the horizontal plate 5 can then move the aluminum powder in the container tank 4, which can stir the aluminum powder and allow the aluminum powder to fully contact the hot air, thereby accelerating the drying of the aluminum powder.

[0042] like Figure 3 As shown, multiple limiting grooves 44 are fixedly connected to the bottom edge of the filter plate 41. The limiting grooves 44 are sleeved on the outer surface of the support block 13, which can limit the container tank 4 and prevent the container tank 4 from rotating during the stirring of aluminum powder by the lever 51.

[0043] Specifically, such as Figure 2 and Figure 4 As shown, a slot is provided at the top of the drive shaft 24, and an L-shaped groove 25 communicating with the slot is provided on the outer surface of the top of the drive shaft 24. A rod 52 is fixedly connected to the lower part of the middle of the cross plate 5, and a locking block 53 is fixedly connected to the outer surface of the rod 52. The rod 52 is inserted into the slot. After the drive shaft 24 rotates, the locking block 53 is locked into the L-shaped groove 25 and drives the rod 52 to rotate. The rod 52 will not fall off upwards during the rotation. This method is easy to disassemble and assemble, thus facilitating the disassembly and assembly of the container tank 4.

[0044] The working principle of this utility model is as follows: When drying aluminum powder, the aluminum powder is placed in the container tank 4, and then the container tank 4 is sleeved onto the outer surface of the drive shaft 24 through the sleeve 43. The horizontal plate 5 is clamped to the top of the drive shaft 24. The motor 23 is started, so that the lever 51 stirs the aluminum powder. The exhaust fan 12 is started, and the exhaust fan 12 discharges the air in the box 1 downward into the gas collection box 2, and then discharges it through the serpentine pipe 31. After the air in the box 1 is transported downward, a negative pressure is formed, so the outside air can pass through the air guide pipe 21 from the gas collection box 2 into the heat exchange box 3. The air then enters from the top of the housing 1 through the air inlet pipe 32 and the air inlet nozzle 14. The air is heated when it passes through the electric heating wire mesh 15. The heated air then heats and dries the aluminum powder in the container tank 4. The evaporated moisture is discharged into the air collection box 2 with the air. The residual heat of the old air heats the air guide pipe 21, thereby initially heating the new air in the air guide pipe 21. When the old air passes through the serpentine pipe 31 from the heat exchange box 3, the heat is conducted to the fins 33, thereby further contacting the new air in the heat exchange box 3 to achieve heat exchange. The heated new air then enters the housing 1 through the air inlet pipe 32.

Claims

1. A high-efficiency air-cooled constant temperature drying oven, comprising a cabinet (1), characterized in that, A gas collection box (2) is fixedly connected to the bottom of the box (1), and a heat exchange box (3) is fixedly connected to the back of the box (1) and the gas collection box (2). A door panel (11) is hinged to the front of the box (1). An exhaust fan (12) is fixedly installed at the bottom of the box (1), an air guide pipe (21) is fixedly installed inside the air collection box (2), an air inlet pipe (32) is fixedly connected to the top of the heat exchange box (3), an air inlet nozzle (14) is fixedly connected to the end of the air inlet pipe (32) away from the heat exchange box (3), the air inlet nozzle (14) is fixedly connected to the top of the box (1), and an electric heating wire mesh (15) is fixedly connected inside the air inlet nozzle (14). Multiple serpentine tubes (31) are fixedly installed inside the heat exchange box (3). One end of the serpentine tube (31) extends into the interior of the gas collection box (2), and the other end of the serpentine tube (31) extends into the exterior of the heat exchange box (3). Multiple support blocks (13) are fixedly connected to the lower part of the box (1), and a container groove (4) overlaps the top of the support blocks (13).

2. The high-efficiency air-cooled constant temperature drying oven according to claim 1, characterized in that, Fins (33) are fixedly connected to the outer surface of the plurality of serpentine tubes (31), and through holes (34) are provided on the surface of the fins (33).

3. The high-efficiency air-cooled constant temperature drying oven according to claim 1, characterized in that, The container tank (4) includes a filter plate (41), and a filter ring (42) is fixedly connected to the outer surface of the top of the filter plate (41).

4. The high-efficiency air-cooled constant temperature drying oven according to claim 3, characterized in that, A power box (22) is fixedly connected to the bottom of the box (1). A motor (23) is fixedly installed inside the power box (22). A transmission shaft (24) is fixedly connected to the output end of the motor (23). The transmission shaft (24) extends through the inside of the box (1). A sleeve (43) is fixedly connected to the middle of the filter plate (41). A horizontal plate (5) is detachably connected to the top of the transmission shaft (24). Multiple levers (51) are fixedly connected to the bottom of the horizontal plate (5).

5. The high-efficiency air-cooled constant temperature drying oven according to claim 4, characterized in that, Multiple limiting grooves (44) are fixedly connected to the bottom edge of the filter plate (41), and the limiting grooves (44) are sleeved on the outer surface of the support block (13).

6. The high-efficiency air-cooled constant temperature drying oven according to claim 4, characterized in that, The top end of the drive shaft (24) is provided with a slot, and the outer surface of the top end of the drive shaft (24) is provided with an L-shaped slot (25) communicating with the slot. A plug rod (52) is fixedly connected to the lower part of the middle of the cross plate (5), and a locking block (53) is fixedly connected to the outer surface of the plug rod (52).

7. The high-efficiency air-cooled constant temperature drying oven according to claim 1, characterized in that, A drain pipe (26) is provided at the bottom of one side of the gas collection box (2), and a valve is provided on the drain pipe (26).

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