An intermittent sulfur-free drying method for gardenia

Abstract

The application discloses a kind of " intermittent " sulfur-free drying method of gardenia, comprising the following steps: first drying;Temperature is set to 30~35 ℃, and drying time is 8~12 hours Dry to the moisture content of gardenia 45%, whole process internal circulation dehumidification, the free water between gardenia organization and outer moisture volatilization;Brewing moistening;Brewing moistening temperature is 35 ℃, and brewing moistening processing time is 18~24 hours, whole process does not dehumidification, the moisture in the inner layer of gardenia organization and the moisture in seed diffuse out through brewing moistening;Second drying;Temperature is set to 50~55 ℃, and humidity is set to 35%, whole process internal circulation dehumidification, using high temperature to force water volatilization, dry to the moisture content of gardenia 13~15%, equipment stops heating;Thus through twice drying and the process of intermediate brewing moistening, can realize the moisture in the inner layer of gardenia, outer layer water and seed, gardenia keeps original color, original form, full, color consistent and color bright.

Description

TECHNICAL FIELD

[0001] The present application relates to gardenia production technology field, especially a kind of " intermittent " sulfur-free drying method of gardenia. BACKGROUND

[0002] Gardenia is an important local medicinal material variety in Xiangzhong region, Shuangfeng County is an important medicinal gardenia production area, and the gardenia planting area reached 10,000 mu in the whole county in 2018.

[0003] In recent years, with the rapid development of China's economy and the rapid improvement of people's living standards, the development of "health" industry has more and more demand for local medicinal materials, and the demand for quality is also higher and higher; The role of traditional Chinese medicine in the prevention and treatment of infectious diseases has been recognized; Therefore, the development of traditional Chinese medicine industry in China will enter a rapid track, and the production of local medicinal materials will become a new economic growth point.

[0004] Gardenia is rich in oil components, and water is not easy to volatilize during drying. Natural drying needs 3-4 days, and the drying quality of gardenia medicinal materials is seriously affected by rainy weather, and even mildew, discoloration and metamorphic quality occur, resulting in low processing efficiency and uneven product quality; And the natural drying process occupies a large area, and the dryness is inconsistent, because the size of the fruit particles is inconsistent, the maturity is inconsistent, the color changes greatly, and it is easy to mildew and turn black in rainy weather.

[0005] Most of the existing production enterprises use high temperature to dry gardenia for improving efficiency, which increases the processing efficiency of gardenia to some extent, but the results show that the beauty of gardenia is destroyed, resulting in that the color of processed gardenia cannot guarantee the original color, and if the temperature control is not good, the processed gardenia is black, green or brown, which is not as good as the color of naturally dried gardenia. SUMMARY

[0006] In order to solve the technical problems of low efficiency, easy mildew and metamorphic quality, discoloration and unsuitable large-scale production of "sun drying method" in the prior art, deep color, low yield of good products and inability to guarantee the original color of gardenia medicinal materials in "high temperature drying", the present application provides a "intermittent" sulfur-free drying method of gardenia.

[0007] The technical scheme of the present application is as follows: a "intermittent" sulfur-free drying method of gardenia, comprising the following steps:

[0008] Step 1, first drying; gardenia is classified according to size and placed in an integrated production device, the temperature is set to 30-35 DEG C, the drying time is 8-12 hours, the moisture content of gardenia is about 45%, and the free water and outer water between gardenia are volatilized by internal circulation and moisture removal;

[0009] Step 2, stewing and moisturizing; set the temperature to 35℃, and the treatment time under closed conditions is 18-24 hours, during which no moisture is discharged, so that the moisture in the inner layer of gardenia and the seed is diffused out through stewing and moisturizing;

[0010] Step 3, second drying; set the temperature to 50-55℃, and the humidity to 35%, and during the whole process, the internal circulation is used to discharge moisture, so that the moisture is forced to evaporate, and the drying is performed until the moisture content of the gardenia is 13-15%, and then the equipment stops heating.

[0011] As a further improvement of the above technical solution:

[0012] Preferably, the integrated device comprises a processing container, a cover lid covering the top of the processing container, a detection assembly arranged on the cover lid, a moisture discharge assembly and a drying assembly penetrating into the processing container.

[0013] Preferably, the processing container comprises a processing inner cylinder and an outer insulation cylinder sleeved from inside to outside, the bottom of the processing inner cylinder is provided with a plurality of supporting legs, the lower end of the supporting leg is connected to the lower surface of the inner wall of the outer insulation cylinder, and the outer wall of the processing inner cylinder and the inner wall of the outer insulation barrel are connected through a connecting ring.

[0014] Preferably, the moisture discharge assembly comprises a moisture discharge pipe penetrating through the outer insulation cylinder and the processing inner cylinder, a dehumidification box in communication with the moisture discharge pipe, a water collecting basin arranged on the lower surface of the dehumidification box, a heat exchange coil arranged in the dehumidification box, and a first heat exchanger in communication with both ends of the heat exchange coil.

[0015] Preferably, the drying assembly comprises a drying pipeline penetrating through the bottom of the processing inner cylinder and the outer insulation cylinder, a plurality of drying holes are arranged on the part of the drying pipeline located in the processing inner cylinder, the end of the drying pipeline located outside the outer insulation barrel is bifurcated, one of the bifurcated ends of the drying pipeline is in communication with a drying fan, a heat supply pipeline is arranged in the drying pipeline, the heat supply pipeline penetrates through the other bifurcated end of the drying pipeline, and the heat supply pipeline is in communication with a second heat exchanger.

[0016] Preferably, the heat supply pipeline is connected to a stirring air pipe at the turning part below the processing inner cylinder, the stirring air pipe is in communication with a stirring power box arranged on the side wall of the processing inner cylinder, the stirring power box is in communication with the processing inner cylinder, a stirring fixed rod is arranged on the side of the stirring power box close to the processing inner cylinder, a stirring rotating rod is rotatably arranged on the stirring fixed rod, power blades are arranged on the side of the stirring rotating rod close to the stirring power box, the stirring air pipe is in communication with a Y-shaped power air pipe, and the power blades are located between the two air outlets of the Y-shaped power air pipe.

[0017] Preferably, ventilation screens are arranged on the left and right sides of the stirring fixed rod.

[0018] Preferably, the heating pipe is provided with a heating pipe fixing disc, a ventilation opening is arranged on the heating pipe fixing disc, a switch plate is slidably connected to the heating pipe fixing disc outside the ventilation opening through a plurality of switch sliding rods, one end of the switch plate is located close to the processing inner cylinder, and a limiting block is arranged at the other end of the switch sliding rod.

[0019] Preferably, a built-in closing magnet is arranged on the surface of the switch plate opposite to the heating pipe fixing disc.

[0020] Preferably, the detection assembly comprises an operation panel arranged on the upper surface of the cover, a material humidity probe, a temperature probe and an air humidity probe arranged on the lower surface of the cover, and the material humidity probe, the temperature probe and the air humidity probe are electrically connected to the operation panel.

[0021] Compared with the prior art, the present application has the following beneficial effects:

[0022] 1. The processing method provided by the present application processes gardenias in a segmented drying manner, first volatilizes free water and outer layer moisture between the gardenias, gives a certain temperature to the inside, then diffuses inner layer water and moisture in the gardenias through stewing, and finally performs secondary drying to evaporate the diffused water. Through the process of twice drying and intermediate stewing, the inner layer water, outer layer water and moisture in the gardenia seeds can be dried. Compared with the direct high-temperature drying in the prior art, the processed gardenias maintain the original color, original form, fullness, uniform color and bright color, and have a high rate of excellent products. Although the natural air-drying can obtain the above-mentioned effects, the efficiency is relatively slow, and the color is difficult to guarantee uniformity. Therefore, the gardenia processing method provided by the present application improves the efficiency of natural air-drying and guarantees the quality of the processed gardenias.

[0023] 2. The gardenia ecological processing method provided by the present application simulates the dry environment in autumn by controlling humidity and simulates the sun exposure temperature in summer by controlling temperature, so that the overall processing environment tends to be the natural air-drying environment, and the drying process tends to be natural drying, thereby guaranteeing the quality of the dried gardenias.

[0024] 3. The gardenia processing method provided by the present application saves more than 60% energy compared with the existing ordinary high-temperature direct drying method, and can be used for materials containing high oil and fat components such as gardenias.

[0025] 4. The present application also provides a special processing equipment suitable for the processing method, an integrated device, which completes the whole process of drying-stewing-redrying at one time, does not need to be transferred in multiple steps, reduces the operation steps of production workers, reduces labor input, avoids the influence of rainy weather on the dried or stewed gardenias during the transfer process, causes the quality of the processed gardenias to be uneven, and realizes all-weather drying processing of gardenia medicinal materials. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall three-dimensional partially exploded structure of the present invention;

[0028] Figure 2 This is a top view (with the cap removed) of the present invention.

[0029] Figure 3 This is a schematic diagram of the structure of the present invention (with the cap and insulation outer cylinder removed);

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the cap of the present invention;

[0031] Figure 5 This is a three-dimensional structural diagram of the drying module of the present invention;

[0032] Figure 6 This is a schematic cross-sectional view of the drying module of the present invention.

[0033] Figure 7 yes Figure 6 Enlarged structural diagram of area A in the middle;

[0034] Figure 8 This is a three-dimensional structural diagram of the heating pipe fixing plate of the present invention;

[0035] Figure 9 This is a three-dimensional structural diagram of the stirring power box of the present invention;

[0036] Figure 10 This is a schematic diagram of the internal three-dimensional structure of the stirring power box of the present invention;

[0037] Figure 11 This is a three-dimensional structural diagram of the dehumidification component of the present invention.

[0038] Mark No. : 1, processing inner cylinder; 2, outer insulation cylinder; 3, supporting leg; 4, connecting ring; 5, moisture removal pipe; 6, dehumidification box; 7, water collecting basin; 8, heat exchange elbow; 9, first heat exchanger; 10, drying pipeline; 11, drying hole; 12, drying fan; 13, heat supply pipeline; 14, second heat exchanger; 15, stirring air pipe; 16, stirring power box; 17, stirring fixed rod; 18, stirring rotating rod; 19, power blade; 20, Y-shaped power air pipe; 21, ventilation screen; 22, heat supply pipe fixing disc; 23, ventilation opening; 24, switch sliding rod; 25, switch plate; 26, limiting block; 27, closing magnet; 28, cover; 29, operation panel; 30, material humidity probe; 31, temperature probe; 32, air humidity probe. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0040] In the description of the present application, it should be understood that the terms "front", "back", "left", "right", "up", "down" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The technical solutions of the embodiments in the present application can be combined, and the technical features in the embodiments can be combined to form new technical solutions.

[0041] The technical solutions provided by the present application are as follows:

[0042] Embodiment 1

[0043] In order to improve the processing efficiency of gardenia and the quality of processed gardenia, the present application provides a processing step, and the specific steps are as follows:

[0044] Step 1, first drying; place the gardenia in the integrated production equipment, set the temperature to 30-35 DEG C, set the humidity to 45%, and dry for 8-12 hours, dry the gardenia to 45% moisture content, and circulate the moisture throughout the process, volatilize the free water and outer water between the gardenias;

[0045] Step 2, stewing; set the temperature to 35 DEG C, and process for 18-24 hours under closed conditions, without moisture removal throughout the process, diffuse the inner moisture of the gardenia and the moisture in the seeds through stewing;

[0046] Step 3, second drying; the temperature is set to 50-55 DEG C, the humidity is set to 45%, the internal circulation is used to exhaust the moisture, the moisture is forcedly volatilized by high temperature, and the drying is performed until the moisture content of the gardenia is 13-15%, and the equipment stops heating.

[0047] The principle of the processing method of the present application is as follows:

[0048] In the whole processing process, the humidity environment is simulated to be similar to that in autumn, and the temperature is simulated to be similar to that in summer, and the temperature and humidity required for processing the gardenia are detected through multiple experiments, and the temperature and humidity are optimized, compared with natural airing, the temperature and humidity of the present application can maintain the required humidity and temperature, and are not affected by weather factors, so that the quality of the processed gardenia is more stable and uniform.

[0049] And the first drying is mainly to dry the moisture on the surface of the gardenia, which can reduce the time required in the second drying process, thereby avoiding the influence of high temperature on the gardenia and reducing the possibility of blackening,

[0050] After the first drying, the gardenia material is subjected to stewing for a period of time, mainly to diffuse the inner layer water and the moisture in the gardenia, because the inner layer of the gardenia contains oil, the traditional drying method is long in time and high in temperature, which is mainly to remove the water in the mixture of water and oil on the inner shell of the gardenia, and the oil on the surface of the inner fruit (seed) of the gardenia, like the inner shell of the gardenia, the water in the fruit cannot be easily evaporated from the surface of the fruit, resulting in long drying time and high drying temperature, which affects the production quality of the gardenia, therefore, the stewing method is adopted to diffuse the moisture in the shell and the fruit to the surface, thereby reducing the time and temperature required for subsequent drying, and reducing the possibility of blackening of the gardenia;

[0051] The last second drying is mainly to dry the moisture diffused by stewing, after stewing, the moisture in the shell and the moisture in the seed of the gardenia is less, the drying temperature can be reduced, and the time can be greatly shortened, and the influence of high temperature and long time drying on the gardenia is avoided.

[0052] Example 2

[0053] In order to realize the processing method of the gardenia in example 1, the present application designs a special processing device, as shown in the accompanying drawings, Figure 1 ~ the accompanying drawings, Figure 11 The processing device used in the gardenia processing method provided by the present application is as follows:

[0054] The processing container is composed of a processing inner cylinder 1 and an outer insulation cylinder 2 which are sequentially sleeved from inside to outside. The lower surface of the processing inner cylinder 1 is provided with a plurality of supporting legs 3 which are fixed to the lower surface of the outer insulation cylinder 2. The outer wall of the processing inner cylinder 1 and the inner wall of the outer insulation cylinder 2 are connected by a connecting ring 4, so that the stability between the processing inner cylinder 1 and the outer insulation cylinder 2 during processing is ensured.

[0055] The drying module includes an L-shaped drying pipeline 10 which penetrates the bottom of the processing inner cylinder 1 and the outer wall of the outer insulation cylinder 2. A plurality of drying holes 11 are arranged on the drying pipeline 10 of the processing inner cylinder 1. A heat supply pipeline 13 is arranged in the drying pipeline 10. The heat supply pipeline 13 is bent from one pipeline and penetrates the outer side of the drying pipeline 10 at both ends, so that the other end of the drying pipeline 10 is an L-shaped bifurcated pipeline. The two ends of the heat supply pipeline 13 penetrate the vertical bifurcated pipeline. The two ends of the heat supply pipeline 13 are connected with a second heat exchanger 14 which is a common hot water circulating converter in the market. The other bifurcated pipeline is connected with a drying fan 12.

[0056] The drying pipeline 10 is further provided with a heat supply pipeline fixing disc 22. Two symmetrical air vents 23 are arranged on the heat supply pipeline fixing disc 22. A switch plate 25 is slidably connected to the heat supply pipeline fixing disc 22 through three switch sliding rods 24 on the outer side of the air vent 23. The switch plate 25 is located near one end of the processing inner cylinder 1. A limiting block 26 is arranged at the other end of the switch sliding rod 24. A built-in closing magnet 27 is arranged on the surface of the switch plate 25 opposite to the heat supply pipeline fixing disc 22.

[0057] During the drying process, the heat supply pipeline 13 continuously ensures the internal temperature through the second heat exchanger 14. The drying fan 12 blows the heat on the heat supply pipeline 13 to the drying holes 11 and the inside gardenia through forward blowing, so as to achieve the drying effect. The blowing method is not a single heat supply method. It is ensured that the gardenia far away from the drying holes 11 can also be blown, so that the drying effect is almost uniform, and the disadvantages of the single heat supply method, i.e. the drying quality of the gardenia close to the heat supply pipeline 13 is good and the drying quality of the gardenia behind is poor, are avoided.

[0058] In the process of stewing, the drying fan 12 blows in the opposite direction, so that the switch plate 25 receives a suction force, the heating pipe fixing disc 22 slides, and finally closes the air vent 23, so that the inside is in a closed state, and the heating pipe 13 can also continue to provide heat to ensure the temperature inside, thereby making the stewing effect better. The closing magnet 27 can close more quickly during the sliding process to avoid the suction force caused by the reverse blowing affecting the gardenia. During the drying process, because the wind is forward, the switch plate 25 receives a pushing force and moves away from the air vent, which does not affect the flow of the wind. Therefore, the suction force of the closing magnet 27 cannot be too large. Under the action of the limiting block 26, there is a limit during the pushing process, and the switch plate 25 will not be separated from the heating pipe fixing disc 22.

[0059] The stirring air pipe 15 is connected to the turning part of the drying pipe 10 below the processing inner cylinder 1. The stirring air pipe 15 is connected to the stirring power box 16 arranged on the side wall of the processing inner cylinder 1. The stirring power box 16 is connected to the processing inner cylinder 1. The stirring fixing rod 17 is arranged on one side of the stirring power box 16 close to the processing inner cylinder 1. The ventilation screen 21 is arranged on the left and right sides of the stirring fixing rod 17. The stirring rotating rod 18 is rotatably arranged on the stirring fixing rod 17. The power blade 19 is arranged on one side of the stirring rotating rod 18 close to the stirring power box 16. The stirring air pipe 15 is connected to the Y-shaped power air pipe 20. The power blade 19 is located between the two air outlets of the Y-shaped power air pipe 20.

[0060] During the drying process, the drying fan 12 blows part of the wind to the drying hole 11 in the forward direction. Part of the wind enters the Y-shaped power air pipe 20 in the stirring power box 16 through the stirring air pipe 15. At this time, the wind blows to the power blade 19. The power blade 19 swings left and right between the two air outlets, thereby driving the stirring rotating rod 18 at one end of the processing inner cylinder 1 to swing left and right. The main reason is that when the wind is blown to the left, the wind force on the right has little effect, and the wind force on the left has a great effect, so it turns to the right, and so on, thereby swinging left and right. In order to better swing, the rotation point of the power blade 19 should not be in the middle of the two air outlets. The specific size of the blowing wind force is adjusted according to the size of the blowing wind force. The gardenia is stirred and the accumulated gardenia is pushed away. The hot air can better contact each gardenia, thereby improving the drying effect. At the same time, the excess wind enters the processing inner cylinder 1 through the ventilation screen 21, which resonates with the drying hole 11 in the middle, thereby achieving bidirectional drying and better drying effect.

[0061] The stirring rotating rod 18 can also be arranged to swing up and down. Only one air outlet is needed, and the wind direction needs to blow downward. Therefore, the power air pipe needs to be C-shaped. The main reason is that when the wind force is less than the pressure received by the stirring rotating rod 18 at one end of the processing inner cylinder 1, it will be pressed downward. However, this method needs to change the size of the wind force at all times, otherwise the size of the wind force will be equal to the pressure, which will make the whole thing fixed.

[0062] The moisture-removing module; one end of the moisture-removing pipe 5 is communicated with the dehumidification box 6, the other end penetrates through the outer insulation cylinder 2 and is communicated with the inner cylinder 1, the water collecting basin 7 is arranged on the lower surface of the dehumidification box 6, the heat exchange elbow 8 is further arranged in the dehumidification box 6, the two ends of the heat exchange elbow 8 are communicated with the first heat exchanger 9 outside, the first heat exchanger 9 is the common cold water circulation converter in the market, thus the gaseous water produced in the two drying processes is converted into liquid water when passing through the heat exchange elbow 8, and is collected in the water collecting basin 7.

[0063] The cover 28; the shape of the lower surface of the cover 28 should match the processing outer cylinder and the insulation outer cylinder, the cover 28 is covered on the processing container during processing, the operation panel 29 is arranged on the upper surface of the cover 28, the material humidity probe 30, the temperature probe 31 and the air humidity probe 32 are arranged on the lower surface of the cover 28, the three are electrically connected with the operation panel 29, meanwhile, the operation panel 29 also needs to be electrically connected with the first heat exchanger 9, the second heat exchanger 14 and the drying fan 12, the blowing amount of the drying fan 12 and the hot water temperature provided by the second heat exchanger 14 are automatically adjusted according to the collected temperature, internal air humidity and material humidity, meanwhile, the forward and reverse rotation of the drying fan 12 is controlled through the operation panel 29, the drying, stewing and drying are realized in sequence, thus the gardenia integrated processing equipment is realized, and the intelligent degree of the equipment is improved.

[0064] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for "intermittent" sulfur-free drying of gardenia, characterized in that, Includes the following steps: Step 1: First drying; grade the gardenias by size and place them in an integrated production equipment. Set the temperature to 30℃~35℃ and the drying time to 8~12 hours until the moisture content of the gardenias is 45%. The entire process involves internal circulation and dehumidification to evaporate the free water and outer moisture of the gardenia fruits. Step 2, moistening; set the temperature to 35℃, and process for 18~24 hours under sealed conditions, without removing moisture throughout the process, so that the moisture in the inner layer of the gardenia and the moisture in the seeds can be diffused out through moistening. Step 3, Second drying: Set the temperature to 50℃~55℃ and the humidity to 35%. The entire process involves internal circulation and dehumidification. The high temperature forces the moisture to evaporate through the diffusion force caused by the humidity difference between the inner and outer layers of the material. The drying process continues until the moisture content of the gardenia is 13%~15%. The equipment then stops heating, which meets the required moisture content of the gardenia. The integrated device includes a processing container, a cover (28) covering the top of the processing container, a detection component set on the cover (28), a dehumidification component and a drying component penetrating the processing container; The processing container includes an inner processing cylinder (1) and an outer insulation cylinder (2) extending from the inside to the outside. The bottom of the inner processing cylinder (1) is provided with multiple support legs (3). The lower ends of the support legs (3) are connected to the lower surface of the inner wall of the outer insulation cylinder (2). The outer wall of the inner processing cylinder (1) and the inner wall of the outer insulation cylinder are connected by a connecting ring (4). The drying assembly includes a drying pipe (10) that runs through the bottom of the inner processing cylinder (1) and through the outer insulation cylinder (2). The portion of the drying pipe (10) inside the inner processing cylinder (1) is provided with multiple drying holes (11). The end of the drying pipe (10) located outside the outer insulation cylinder is bifurcated. One of the bifurcations of the drying pipe (10) is connected to the drying fan (12). A heating pipe (13) is provided inside the drying pipe (10). The heating pipe (13) is connected to another bifurcation of the drying pipe (10) and is connected to the second heat exchanger (14). The detection component includes an operation panel (29) disposed on the upper surface of the cover (28), a material humidity probe (30), a temperature probe (31) and an air humidity probe (32) disposed on the lower surface of the cover (28), and the material humidity probe (30), the temperature probe (31) and the air humidity probe (32) are all electrically connected to the operation panel (29).

2. The "intermittent" sulfur-free drying method for gardenia according to claim 1, characterized in that, The dehumidification assembly includes a dehumidification pipe (5) that runs through the outer insulation cylinder (2) and is connected to the inner cylinder (1), a dehumidification box (6) connected to the dehumidification pipe (5), a water collection basin (7) set on the lower surface of the dehumidification box (6), a heat exchange bend (8) set in the dehumidification box (6), and a first heat exchanger (9) connected to both ends of the heat exchange bend (8).

3. The "intermittent" sulfur-free drying method for gardenia according to claim 1, characterized in that, The heating pipe (13) is connected to the stirring air pipe (15) at the bend below the processing inner cylinder (1). The stirring air pipe (15) is connected to the stirring power box (16) set on the side wall of the processing inner cylinder (1). The stirring power box (16) is connected to the processing inner cylinder (1). The stirring power box (16) is provided with a stirring fixing rod (17) on the side of the processing inner cylinder (1). A stirring rotating rod (18) is rotatably provided on the stirring fixing rod (17). A power blade (19) is provided on the side of the stirring rotating rod (18) near the stirring power box (16). The stirring air pipe (15) is connected to the Y-shaped power air pipe (20). The power blade (19) is located between the two air outlets of the Y-shaped power air pipe (20).

4. The "intermittent" sulfur-free drying method for gardenia according to claim 3, characterized in that, Ventilation screens (21) are provided on the left and right sides of the stirring rod (17).

5. The "intermittent" sulfur-free drying method for gardenia according to claim 1, characterized in that, The heating pipe (13) is provided with a heating pipe fixing plate (22), and a vent (23) is provided on the heating pipe fixing plate (22). A switch plate (25) is slidably connected to the heating pipe fixing plate (22) outside the vent (23) via multiple switch slide rods (24). The switch plate (25) is located at one end close to the processing inner cylinder (1), and a limit block (26) is provided at the other end of the switch slide rod (24).

6. The "intermittent" sulfur-free drying method for gardenia according to claim 5, characterized in that, An embedded closing magnet (27) is provided on the surface of the switch plate (25) opposite to the heating pipe fixing plate (22).

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