Medicinal hot air circulating oven

Abstract

The medicinal hot air circulating oven comprises an oven body, air blocking fan blades and an air injection rotating frame, backflow air channels are arranged in the two transverse ends of the oven body, air channel openings are formed between an inner cavity of the upper end of the oven body and the backflow air channels, a motor is fixed in the inner cavity of the upper end of the oven body, and the air blocking fan blades are arranged in the air injection rotating frame. A long-strip-shaped hole is formed between an inner cavity of the upper end of the box body and an inner cavity of the lower end of the box body, a tray is movably inserted into the inner cavity of the lower end of the box body in a front-back mode, one end of the air injection rotating frame is fixed to the output end of the motor, and the lower end of the air injection rotating frame penetrates through the long-strip-shaped hole. While a conventional drying effect is achieved, the direction of air flow sprayed out of the air spraying rotating frame can be changed, meanwhile, the direction of the air flow is controlled in cooperation with rotation of the air blocking fan blades, then medicinal materials are dried in different directions, the medicinal materials are heated more evenly, the drying effect is more stable, and the drying efficiency is improved. The drying effect difference of all parts of the medicinal materials is smaller.

Description

Technical Field

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

[0002] After freshly picked, medicinal materials need to be placed in an oven for drying. On the one hand, it can remove moisture from the medicinal materials, prevent them from spoiling, facilitate later transportation, and increase the fragrance of the medicinal materials. On the other hand, it can improve the efficacy of the medicinal materials, reduce moisture, and increase the content of aromatic substances.

[0003] The medicinal hot air circulation oven is a box that uses internal circulating airflow to dry medicinal materials. It includes heating components, heat insulation components, airflow generating components, etc. However, some existing medicinal hot air circulation ovens have some defects, such as:

[0004] The air outlet and inlet inside the oven are fixed, and the drying direction of the medicinal materials is also fixed, which causes uneven heating of the medicinal materials, resulting in good drying effect for some parts of the medicinal materials and poor drying effect for some parts, that is, there is a difference in drying effect. Summary of the invention

[0005] The utility model provides a medicinal hot air circulation oven to solve the problems raised in the above background technology.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A medicinal hot air circulation oven comprises a box body, fan blades and an air jet rotating frame;

[0008] Box body: both lateral ends of the box body are provided with return air ducts, an air duct opening is provided between the upper inner cavity of the box body and the return air duct, a motor is fixed in the upper inner cavity of the box body, a long hole is provided between the upper inner cavity of the box body and the lower inner cavity of the box body, and a tray is inserted in the lower inner cavity of the box body so as to move forward and backward;

[0009] Jet rotating frame: one end of the jet rotating frame is fixed to the output end of the motor, the lower end of the jet rotating frame passes through the long hole, the width of the jet rotating frame is smaller than the width of the long hole, and a hot air supply component is installed between the jet rotating frame and the upper inner cavity of the box body;

[0010] Fan block blades: The fan block blades have two rows, and the two rows of fan block blades are respectively rotated through the rotating shaft in the side wall between the inner cavity at the lower end of the box body and the two return air ducts. The two rows of fan block blades are perpendicular to each other, and a power transmission component is installed between the output end of the motor and the fan block blades to drive the two rows of fan block blades to rotate simultaneously;

[0011] By adopting the above technical solution, the hot air supply component generates hot air, so that the hot air flows between the return air duct, the upper inner cavity of the box, the jet rotating frame and the lower inner cavity of the box to dry the medicinal materials on the tray, thereby achieving a conventional drying effect;

[0012] The motor drives the jet rotating frame to rotate forward and reverse, so that the direction of the airflow ejected from the jet rotating frame changes. At the same time, the rotation of the fan blades is coordinated to control the direction of the airflow, thereby drying the medicinal materials from different directions. The drying effect is more stable and the drying effects of different parts of the medicinal materials are less different.

[0013] Preferably, the hot air supply assembly is mainly composed of a fan and an electric heating rod, the fan is fixed in the upper inner cavity of the box, and the electric heating rods are arranged in a linear array in the jet rotating frame;

[0014] By adopting the above technical solution, the fan works to generate airflow, and the electric heating rod heats the airflow to form a hot airflow, thereby supplying the hot airflow.

[0015] Preferably, the power transmission assembly includes a first bevel gear, a second bevel gear, a transmission shaft, a third bevel gear, a fourth bevel gear, a worm gear and a worm, the first bevel gear is fixed to the output end of the motor, the first bevel gear is meshed with the second bevel gear, the second bevel gear is fixed to one end of the transmission shaft, the transmission shaft rotates in the upper end of the box body, the other end of the transmission shaft is fixed with a third bevel gear, the third bevel gear is meshed with the fourth bevel gear, the fourth bevel gear is fixed to the upper end of the worm, the worm rotates in the box body, the worm is meshed with the worm gear, and the worm gear is fixed to the end of the rotating shaft of the fan blade;

[0016] By adopting the above technical solution, the motor drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the transmission shaft to rotate, the transmission shaft drives the third bevel gear to rotate, the third bevel gear drives the fourth bevel gear to rotate, the fourth bevel gear drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the fan baffle blades to rotate, thereby adjusting the rotation of the fan baffle blades while controlling the motor to drive the jet rotating frame to rotate, so that the fan baffle blades can rotate at any time in coordination with the rotation of the jet rotating frame, and then cooperate to control the direction of airflow.

[0017] Preferably, a pressure stabilizing hole is provided on the side of the return airway, a filter is fixed on the side of the box, a filter cotton plate is fixed inside the filter, and the filter is located outside the pressure stabilizing hole;

[0018] By adopting the above technical solution, the pressure-stabilizing hole allows the hot air flow to be discharged outside the box, and also allows the air flow outside the box to be sucked into the box, thereby adjusting the air pressure of the air flow inside the box, and the filter can filter impurities in the air flow to ensure the quality of the air flow for drying medicinal materials.

[0019] Preferably, a corrugated sleeve is fixed between the edge of the jet rotating frame and the edge of the long hole;

[0020] By adopting the above technical solution, the corrugated sleeve blocks the gap between the jet rotating frame and the long hole, thereby preventing the airflow from flowing out of the gap between the jet rotating frame and the long hole.

[0021] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0022] The utility model utilizes a hot air supply component to generate hot air, so that the hot air flows between the return air duct, the upper inner cavity of the box, the jet rotating frame and the lower inner cavity of the box to dry the medicinal materials on the tray, thereby achieving a conventional drying effect;

[0023] The motor drives the jet rotating frame to rotate forward and reverse, which changes the direction of the airflow ejected from the jet rotating frame. At the same time, the rotation of the fan blades is coordinated to control the direction of the airflow, thereby drying the medicinal materials from different directions. The medicinal materials are heated more evenly, the drying effect is more stable, and the drying effects of different parts of the medicinal materials are less different. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a three-dimensional diagram of the utility model;

[0026] Figure 2 It is the front view of the utility model;

[0027] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA;

[0028] Figure 4 It is a top view of the utility model;

[0029] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at BB;

[0030] Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure at CC;

[0031] Figure 7 for Figure 4 Schematic diagram of the cross-sectional structure at DD.

[0032] Among them: 1. filter; 2. box body; 3. tray; 4. fan blades; 5. jet rotor frame; 6. airway opening; 7. power transmission component; 71. first bevel gear; 72. second bevel gear; 73. transmission shaft; 74. third bevel gear; 75. fourth bevel gear; 76. worm gear; 77. worm; 8. motor; 9. fan; 10. corrugated sleeve; 11. electric heating rod; 12. return airway. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0034] See also Figure 1 and Figure 6 , a medicinal hot air circulation oven, comprising a box body 2, fan blades 4 and an air jet rotating frame 5;

[0035] Box 2: See Figure 1 , a door is installed at the front end of the box body 2 through hinge rotation, and the lower end cavity of the box body 2 can be closed by closing the door, and a return air duct 12 is provided in both lateral ends of the box body 2, and an air duct opening 6 is provided between the upper end cavity of the box body 2 and the return air duct 12, and a pressure stabilizing hole is provided on the side of the return air duct 12, and a filter 1 is fixed on the side of the box body 2, and a filter cotton plate is fixed in the filter 1, and the filter 1 is located outside the pressure stabilizing hole, and a motor 8 is fixed in the upper end cavity of the box body 2, and the output end of the motor 8 faces backward, and the input end of the motor 8 is electrically connected to the output end of the external mains power supply, and a long strip hole in the front-to-back direction is provided between the upper end cavity of the box body 2 and the lower end cavity of the box body 2, and a tray 3 is inserted in the lower end cavity of the box body 2 for front-to-back movement;

[0036] Jet rotating frame 5: One end of the jet rotating frame 5 is fixed to the output end of the motor 8, the lower end of the jet rotating frame 5 passes through the long hole, the width of the jet rotating frame 5 is smaller than the width of the long hole, and a corrugated sleeve 10 is fixed between the edge of the jet rotating frame 5 and the edge of the long hole, and the lower end of the jet rotating frame 5 has spray holes in a linear array in front and back, and a hot air supply component is installed between the jet rotating frame 5 and the upper end inner cavity of the box body 2. The hot air supply component is mainly composed of a fan 9 and an electric heating rod 11. The fan 9 is fixed in the upper end inner cavity of the box body 2, and the electric heating rod 11 is linearly arrayed in the jet rotating frame 5. The input ends of the fan 9 and the electric heating rod 11 are electrically connected to the output end of the external AC power supply;

[0037] Fan block blades 4: There are two rows of fan block blades 4, and the two rows of fan block blades 4 are respectively rotated through the rotating shaft in the side wall between the inner cavity at the lower end of the box body 2 and the two return air ducts 12, and the two rows of fan block blades 4 are perpendicular to each other. For example, when the angle between the left row of fan block blades 4 and the vertical plane is 45°, the angle between the right row of fan block blades 4 and the vertical plane is 135°. There are two fan block blades 4 in each row, that is, the left end of the tray 3 is located between the upper and lower fan block blades 4 in the left row, and the right end of the tray 3 is located between the upper and lower fan block blades 4 in the right row. A power transmission component 7 is installed between the output end of the motor 8 and the fan block blades 4 to drive the two rows of fan block blades 4 to rotate simultaneously.

[0038] In this embodiment, the power transmission assembly 7 includes a first bevel gear 71, a second bevel gear 72, a transmission shaft 73, a third bevel gear 74, a fourth bevel gear 75, a worm gear 76 and a worm 77. Figure 3 , Figure 5 and Figure 7 The first bevel gear 71 is fixed to the output end of the motor 8, and the first bevel gear 71 is meshed with the two second bevel gears 72. The two second bevel gears 72 are respectively fixed to the ends of the two transmission shafts 73 that are close to each other. The two transmission shafts 73 rotate respectively in the upper end of the box body 2, and the ends of the two transmission shafts 73 that are away from each other are fixed with third bevel gears 74. The third bevel gear 74 is meshed with the fourth bevel gear 75. The two fourth bevel gears 75 are respectively fixed to the upper ends of the two worm gears 77. The two worm gears 77 rotate respectively in the two ends of the box body 2. Each worm gear 77 is meshed with two worm wheels 76. The two worm wheels 76 in the same row are respectively fixed to the ends of the rotating shafts of the two fan blades 4 in the same row.

[0039] Working principle:

[0040] When in use, the medicinal materials are placed in the tray 3, the tray 3 is placed in the box body 2, and then the box door 2 is closed, the fan 9 is powered on to generate airflow, and the airflow passes through the upper inner cavity of the box body 2, the jet rotating frame 5, the lower inner cavity of the box body 2, the fan blades 4, the return air duct 12 and the air duct opening 6 in sequence for circulation. When the airflow passes through the jet rotating frame 5, the electric heating rod 11 is powered on to heat the airflow to form a hot airflow to dry the medicinal materials. At the same time, the motor 8 drives the first bevel gear 71 to rotate, the first bevel gear 71 drives the second bevel gear 72 to rotate, the second bevel gear 72 drives the transmission shaft 73 to rotate, the transmission shaft 73 drives the third bevel gear 74 to rotate, the third bevel gear 74 drives the fourth bevel gear 75 to rotate, and the fourth bevel gear 75 The worm gear 77 is driven to rotate, and the worm gear 76 is driven to rotate, and the worm gear 76 drives the fan baffle blades 4 to rotate, so that the rotation of the fan baffle blades 4 is adjusted while the control motor 8 drives the jet rotary frame 5 to rotate. When the jet rotary frame 5 ejects air flow to the left, the fan baffle blades 4 on the left rotate from the horizontal direction to the vertical direction, that is, the amount of air flow flowing from the left return air duct 12 is reduced, so that most of the air flow flows from the right return air duct 12. Similarly, when the jet rotary frame 5 ejects air flow to the right, the fan baffle blades 4 on the right rotate from the horizontal direction to the vertical direction, that is, the amount of air flow flowing from the right return air duct 12 is reduced, so that most of the air flow flows from the left return air duct 12. In this way, the air flow can pass completely over the entire tray 3.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A medicinal hot air circulation oven, characterized in that: It comprises a box body (2), fan blades (4) and an air jet rotating frame (5); Box body (2): both lateral ends of the box body (2) are provided with return air ducts (12), an air duct opening (6) is provided between the upper inner cavity of the box body (2) and the return air duct (12), a motor (8) is fixed in the upper inner cavity of the box body (2), a long hole is provided between the upper inner cavity of the box body (2) and the lower inner cavity of the box body (2), and a tray (3) is inserted in the lower inner cavity of the box body (2) so as to move forward and backward; An air jet rotating frame (5): one end of the air jet rotating frame (5) is fixed to the output end of the motor (8), the lower end of the air jet rotating frame (5) passes through the long hole, the width of the air jet rotating frame (5) is smaller than the width of the long hole, and a hot air supply component is installed between the air jet rotating frame (5) and the upper inner cavity of the box body (2); Fan block blades (4): The fan block blades (4) have two rows, and the two rows of fan block blades (4) are respectively rotated through the rotating shaft in the side wall between the inner cavity at the lower end of the box body (2) and the two return air ducts (12). The two rows of fan block blades (4) are perpendicular to each other. A power transmission component (7) is installed between the output end of the motor (8) and the fan block blades (4) to drive the two rows of fan block blades (4) to rotate simultaneously.

2. A medicinal hot air circulation oven according to claim 1, characterized in that: The hot air supply assembly is mainly composed of a fan (9) and an electric heating rod (11); the fan (9) is fixed in the upper inner cavity of the box body (2); and the electric heating rod (11) is arranged in a linear array in the jet rotating frame (5).

3. A medicinal hot air circulation oven according to claim 1, characterized in that: The power transmission assembly (7) comprises a first bevel gear (71), a second bevel gear (72), a transmission shaft (73), a third bevel gear (74), a fourth bevel gear (75), a worm wheel (76) and a worm (77); the first bevel gear (71) is fixed to the output end of the motor (8); the first bevel gear (71) and the second bevel gear (72) are meshed with each other; the second bevel gear (72) is fixed to one end of the transmission shaft (73); the transmission shaft (73) rotates in the upper end of the housing (2); the third bevel gear (74) is fixed to the other end of the transmission shaft (73); the third bevel gear (74) and the fourth bevel gear (75) are meshed with each other; the fourth bevel gear (75) is fixed to the upper end of the worm wheel (77); the worm wheel (77) rotates in the housing (2); the worm wheel (77) and the worm wheel (76) are meshed with each other; the worm wheel (76) is fixed to the end of the rotating shaft of the fan blade (4).

4. A medicinal hot air circulation oven according to claim 1, characterized in that: A pressure stabilizing hole is provided on the side of the return air duct (12), a filter (1) is fixed on the side of the box body (2), a filter cotton plate is fixed inside the filter (1), and the filter (1) is located outside the pressure stabilizing hole.

5. The medicinal hot air circulation oven according to claim 1, characterized in that: A corrugated sleeve (10) is fixed between the edge of the jet rotating frame (5) and the edge of the long hole.

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