Hot air circulating oven

Abstract

The utility model discloses a hot air circulating drying oven, which aims to solve the problems that the drying effect of a hot air circulating drying oven in the prior art is poor, and the drying quality of medicinal materials is difficult to guarantee due to non-uniform heating of the medicinal materials, and specifically comprises a drying oven mechanism and a circulating mechanism connected to the drying oven mechanism, the circulating mechanism comprises a circulating channel used for circulating hot air and an air inlet hole used for inputting the hot air and connected to the drying oven mechanism, and a drying filter screen is further arranged in the circulating channel. The drying oven mechanism comprises an object placing plate and an air outlet hole which is used for outputting hot air and is connected to the circulating mechanism, and the drying oven mechanism and the circulating mechanism jointly form a hot air circulating system; according to the device, hot air circulation is achieved in the mode that the drying oven mechanism is connected with the circulation mechanism, a circulation channel is large, ventilation is facilitated, hot air can evenly reach the interior of the drying oven, and the drying quality of medicinal materials is guaranteed; in addition, due to the design that a drying filter screen is arranged in the circulating channel, hot air circularly entering the drying oven each time can be dry hot air, and then the drying effect of the medicinal materials is better.

Description

Technical Field

[0001] The utility model relates to the technical field of medicinal material processing equipment, in particular to a hot air circulation oven. Background Art

[0002] Medicinal materials refer to natural or artificially prepared plants, animals, minerals and their processed products that have the function of preventing or treating diseases; among them, plant medicinal materials account for a large proportion, such as various herbs, rhizomes, fruits, etc. In the process of medicinal material processing, since plant medicinal materials contain more or less water, drying them is a common treatment method. Drying can not only prevent the medicinal materials from spoiling and bacterial growth, maintain the color, aroma and taste of the medicinal materials, but also facilitate long-term storage and transportation, ensure the efficacy and safety, and meet the pharmaceutical and processing needs. In order to further ensure the quality and efficacy of medicinal materials, people usually use hot air circulation ovens to dry medicinal materials. This oven can not only speed up the drying speed of medicinal materials, shorten the drying time, and improve production efficiency, but also save energy, reduce exhaust gas emissions, and reduce environmental pollution through circulating air supply; in addition, the temperature in the hot air circulation oven and the drying time of medicinal materials are also key factors affecting the quality of drugs.

[0003] For example, a patent with application number CN202321495890.9 discloses a hot air circulation oven. Although this device can achieve the purpose of heating and hot air circulation drying of medicinal materials, this device does not have a device for drying materials in the circulation system. Since the hot air will take away a certain amount of water vapor when passing through the medicinal materials, the humidity of the hot air is high. When it is recycled again, there will be a problem of poor drying effect; in addition, the circulation channel of this device is small, which is not conducive to hot air circulation, and the circulation channel of this device is a tubular structure. When circulating the hot air, the hot air cannot be evenly distributed, which will affect the drying quality of the medicinal materials, causing the problem that the drying quality is difficult to guarantee. It can be seen that a new type of hot air circulation oven is urgently needed to solve the above problems.

[0004] The information disclosed in this background technology section is only used to deepen the understanding of the background technology of the present disclosure, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to those skilled in the art. Utility Model Content

[0005] In view of at least one of the above technical problems, the present disclosure provides a hot air circulation oven, aiming to solve the problems in the prior art that the hot air circulation oven has poor drying effect and uneven heating of medicinal materials, resulting in difficulty in ensuring the drying quality of the medicinal materials.

[0006] According to one aspect of the present disclosure, there is provided a hot air circulation oven, comprising an oven mechanism, and also comprising a circulation mechanism connected to the oven mechanism;

[0007] The circulation mechanism includes a circulation channel for circulating hot air, and an air inlet hole for inputting hot air and connected to the oven mechanism;

[0008] The oven mechanism includes a placement plate for placing items to be dried, and an air outlet for outputting hot air and connected to the circulation mechanism;

[0009] The oven mechanism, the circulation mechanism and the air inlet and outlet holes therebetween together constitute a hot air circulation system.

[0010] In some embodiments of the present disclosure, the circulation mechanism also includes a drying filter, a circulation fan, and a heating tube. The drying filter is installed in the circulation channel, and the circulation fan and the heating tube are fixed on the air inlet hole in sequence from top to bottom.

[0011] In some embodiments of the present disclosure, the circulation mechanism is also equipped with a control module for driving the circulation fan and the heating tube, as well as a fan switch for controlling the circulation fan and a heating tube switch for controlling the heating tube.

[0012] In some embodiments of the present disclosure, the storage board is further provided with storage board through holes for ventilation and drying and a storage board handle for pushing and pulling.

[0013] In some embodiments of the present disclosure, the oven mechanism further includes a plurality of groove rail groups disposed therein and fixed with the storage plate, and a temperature sensor fixed therein.

[0014] In some embodiments of the present disclosure, an oven door is rotatably mounted on the oven mechanism, the oven door is connected to the main body of the oven mechanism via a hinge, and an oven door handle for opening and closing is also provided on the oven door.

[0015] In some embodiments of the present disclosure, a balancing air hole for balancing the air pressure and an openable and closable drain port for draining water are also provided below the circulation mechanism.

[0016] In some embodiments of the present disclosure, when in use, the rotation of the circulation fan drives the air in the cavity to flow downward, the air is heated by the heating tube to form hot air, the hot air is input into the oven mechanism through the air inlet hole, then passes through the through holes on the placement plate and takes away the moisture on the medicinal materials, and then is output to the circulation mechanism through the air outlet hole, and finally the hot air passes through the circulation channel and the drying filter into the cavity of the circulation fan, and is then driven by the circulation fan to flow downward, thereby realizing the circulation of the hot air.

[0017] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0018] 1. The device of the present application adopts the method of connecting the oven mechanism and the circulation mechanism to realize hot air circulation and drying of medicinal materials. The circulation channel is large, which is conducive to ventilation; and the width of the output port of the circulation channel is also equal to the width of the circulation fan cavity, so that the hot air can be uniform and then reach the oven evenly through the circulation fan, thereby ensuring the drying quality of the medicinal materials.

[0019] 2. The device of the present application is also provided with a drying filter in the circulation channel, so that the hot air entering the oven in each cycle is dry hot air, which can dry the medicinal materials more effectively, not only improving the drying efficiency but also ensuring the quality of the medicinal materials.

[0020] 3. Since some medicinal materials have a high water content, water will seep out of the surface of the medicinal materials when heated by hot air, and flow into the bottom of the circulation channel through the holes in the storage plate and the air outlet holes. In addition, the hot air entering the circulation channel will have a lower temperature due to heat dissipation, and the water vapor in the hot air will condense into water droplets and flow to the bottom of the circulation channel. Therefore, an openable and closable drain port is provided at the bottom of the circulation channel to effectively and timely clean up the moisture dried out, avoid excessive water accumulation affecting the hot air circulation, and achieve better drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A partial cross-sectional view of an oven in an embodiment of the present application;

[0022] Figure 2 for Figure 1 A magnified schematic diagram of the middle part;

[0023] Figure 3 This is a schematic diagram of the structure of the outside of the oven in one embodiment of the present application;

[0024] Figure 4 A partial cross-sectional view of an oven in one embodiment of the present application;

[0025] Figure 5 It is a side cross-sectional view of an oven in one embodiment of the present application.

[0026] In the above figures, 1. oven mechanism; 11. groove rail group; 12. storage plate; 121. storage plate through hole; 122. storage plate handle; 13. oven door; 131. oven door handle; 14. hinge; 15. air outlet; 16. temperature sensor; 2. circulation mechanism; 21. drying filter; 22. circulation fan; 221. fan switch; 23. heating tube; 231. heating tube switch; 24. air inlet; 25. circulation channel; 251. balance air hole; 252. drain outlet; 26. control module. DETAILED DESCRIPTION

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The "first", "second", etc. involved in the present application are used to distinguish the objects being described and do not have any order or technical meaning. The "connection" and "connection" involved in the present application, unless otherwise specified, include direct and indirect connections (connections).

[0028] The embodiment of the present application provides a hot air circulation oven, which solves the problem in the prior art that the hot air circulation oven has poor drying effect and uneven heating of medicinal materials, resulting in difficulty in ensuring the drying quality of medicinal materials. In order to better understand the technical solution of the present application, the above technical solution will be described in detail below in conjunction with the drawings in the specification and specific implementation methods.

[0029] This example discloses a hot air circulation oven, see Figures 1 to 5 , including an oven mechanism 1, and also including a circulation mechanism 2 connected to the oven mechanism 1, the circulation mechanism 2 includes a circulation channel 25 for circulating hot air, and an air inlet 24 for inputting hot air and connected to the oven mechanism 1, the oven mechanism 1 includes a placement plate 12 for placing objects to be dried, and an air outlet 15 for outputting hot air and connected to the circulation mechanism 2, the oven mechanism 1, the circulation mechanism 2 and the air inlet 24 and the air outlet 15 therebetween together constitute a hot air circulation system.

[0030] The storage plate 12 is also provided with storage plate through holes 121 for ventilation and drying and a storage plate handle 122 for pushing and pulling; the oven mechanism 1 also includes a plurality of groove rail groups 11 arranged therein and fixed with the storage plate 12, and a temperature sensor 16 fixed therein; the oven mechanism 1 is also rotatably mounted with an oven door 13, the oven door 13 is connected to the main body of the oven mechanism 1 through a hinge 14, and an oven door handle 131 is also provided on the oven door 13 for easy opening and closing; the operator can dock the storage plate 12 to the groove rail groups 11 at different positions to realize the drying and placement of medicinal materials of different specifications.

[0031] The circulation mechanism 2 also includes a drying filter 21, a circulation fan 22, and a heating tube 23. The drying filter 21 is installed in the circulation channel 25, and the circulation fan 22 and the heating tube 23 are fixed on the air inlet 24 from top to bottom in sequence; the circulation mechanism 2 is also equipped with a control module 26 for driving the circulation fan 22 and the heating tube 23 to work, and a fan switch 221 for controlling the circulation fan 22, and a heating tube switch 231 for controlling the heating tube 23; by setting the drying filter 21 to cooperate with the circulation fan 22, the hot air entering the oven in each cycle can be dry hot air, which can more effectively dry the medicinal materials, not only improve the drying efficiency, but also ensure the quality of the medicinal materials; in addition, in the device of the present application, the control module 26 drives the circulation fan 22 and the heating tube 23 and controls them with the corresponding switches, which are all existing technologies, and the specific working principles will not be repeated.

[0032] Since the temperature in the oven mechanism 1 will increase or decrease, the volume of the air therein will also change accordingly. Therefore, a balancing air hole 251 for balancing the air pressure is also opened below the circulation mechanism 2. In addition, since some medicinal materials have a large water content, water will seep out of the surface of the medicinal materials when heated by hot air, and flow into the bottom of the circulation channel 25 through the through holes 121 of the storage plate and the air outlet 15. Moreover, the hot air entering the circulation channel 25 has a lower temperature due to heat dissipation, and the water vapor therein will condense into water droplets and flow to the bottom of the circulation channel 25. Therefore, an openable and closable drain port 252 for drainage is provided below the circulation channel 25. The drain port 252 can be used to effectively and timely clean the dried water, so that the drying effect is better.

[0033] When the device of the present application is implemented, the fan switch 221 is turned on to control the circulation fan 22 to rotate, and the heating tube switch 231 is turned on to control the heating tube 23 to heat. At this time, the circulation fan 22 drives the air in the cavity to flow downward, and the air is heated by the heating tube 23 to form hot air. The hot air is input into the oven mechanism 1 through the air inlet hole 24, and then passes through the placement plate through hole 121 on the placement plate 12 and takes away the moisture on the surface of the medicinal materials placed on the placement plate 12, and then output to the circulation mechanism 2 through the air outlet hole 15, and finally the hot air passes through the circulation channel 25 And pass through the drying filter 21 into the cavity of the circulation fan 22, and then driven by the circulation fan 22 to flow downward, realize the circulation of hot air, and then achieve the purpose of drying the medicinal materials; the device of the present application adopts the method of connecting the oven mechanism 1 with the circulation mechanism 2 to realize the hot air circulation, and the circulation channel 25 is relatively large, which is conducive to ventilation; and the width of the output port of the circulation channel 25 is also equal to the width of the cavity of the circulation fan 22, so that the hot air can be uniform, and then it can reach the oven mechanism 1 evenly through the circulation fan 22, ensuring the drying quality of the medicinal materials. A temperature sensor 16 for monitoring and displaying the temperature in the oven mechanism 1 is also set in the oven mechanism 1. The temperature monitoring and display of the temperature sensor 16 here are all existing technologies, and the specific working principle is not repeated in this scheme; when the temperature reaches a certain value, turn off the heating tube switch 231, so that the heating tube 23 stops heating, and the circulation fan 22 continues to work at this time, so that while avoiding the excessive temperature affecting the effect of the medicinal materials, the medicine can also be dried continuously.

[0034] Although some preferred embodiments of the utility model have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0035] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of this application and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A hot air circulation oven, comprising an oven mechanism (1), characterized in that: It also includes a circulation mechanism (2) connected to the oven mechanism (1); The circulation mechanism (2) comprises a circulation channel (25) for circulating hot air, an air inlet (24) for inputting hot air and connected to the oven mechanism (1), and a balancing air hole (251) for balancing air pressure and an openable and closable water outlet (252) for draining water are provided below the circulation channel (25); the circulation mechanism (2) further comprises a drying filter (21), a circulation fan (22), and a heating pipe (23); the drying filter (21) is installed in the circulation channel (25), and the circulation fan (22) and the heating pipe (23) are fixed to the air inlet (24) in sequence from top to bottom; the width of the outlet of the circulation channel (25) is equal to the width of the cavity of the circulation fan (22); The drying oven mechanism (1) comprises a placement plate (12) for placing items to be dried, and an air outlet (15) for outputting hot air and connected to the circulation mechanism (2); The oven mechanism (1), the circulation mechanism (2), and the air inlet holes (24) and the air outlet holes (15) therebetween together constitute a hot air circulation system.

2. The hot air circulation oven according to claim 1, characterized in that: The circulation mechanism (2) is also provided with a control module (26) for driving the circulation fan (22) and the heating tube (23) to work, as well as a fan switch (221) for controlling the circulation fan (22) and a heating tube switch (231) for controlling the heating tube (23).

3. The hot air circulation oven according to claim 2, characterized in that: The storage board (12) is also provided with a storage board through hole (121) for ventilation and drying, and a storage board handle (122) for pushing and pulling.

4. The hot air circulation oven according to claim 3, characterized in that: The oven mechanism (1) further comprises a plurality of groove rail groups (11) arranged therein and fixedly coupled with the storage plate (12), and a temperature sensor (16) fixed therein.

5. The hot air circulation oven according to claim 1, characterized in that: An oven door (13) is also rotatably mounted on the oven mechanism (1); the oven door (13) is connected to the main body of the oven mechanism (1) via a hinge (14); and an oven door handle (131) for opening and closing is also provided on the oven door (13).

6. The hot air circulation oven according to claim 4, characterized in that: When in use, the rotation of the circulation fan (22) drives the air in the cavity to flow downward, and the air is heated by the heating tube (23) to form hot air. The hot air is input into the oven mechanism (1) through the air inlet hole (24), then passes through the placement plate through hole (121) on the placement plate (12) and takes away the moisture on the medicinal materials, and then is output into the circulation mechanism (2) through the air outlet hole (15). Finally, the hot air passes through the circulation channel (25) and the drying filter (21) to enter the cavity of the circulation fan (22), and is then driven by the circulation fan (22) to flow downward, thereby realizing the circulation of the hot air.

Images