Spice blanching device

Abstract

The utility model provides a spice blanching device, which belongs to the technical field of agricultural product mechanical processing, solves the technical problem that flavor is damaged in the spice processing process in the prior art, and adopts the technical scheme that the device comprises a heating area and an area which is mainly enclosed by an upper cover 14, a lower cover 15, a left shielding curtain 4 and a right shielding curtain 5, the spices are blanched through the heating area; one end of the exhaust fan 9 is connected with the upper cover 14, and the other end of the exhaust fan 9 is connected with the condenser pipe 8; the condensation pipe 8 is used for condensing the gas conveyed from the exhaust fan 9; and the recovery device 16 is used for collecting liquid condensed by the condensation pipe. According to the device, the shape characteristics of raw materials do not need to be considered, the effect of thoroughly blanching spices can be achieved, volatile flavor substances generated in the blanching process of the spices can be recycled, and the device is good in applicability, continuous and rapid in production and high in efficiency; the structure is simple, practicability is high, and environmental pollution is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural product machining technical field especially, relate to a spice blanching device. BACKGROUND

[0002] This section aims to provide background or context for the embodiments of the utility model recited in the claims. The description herein can include concepts that can be pursued, but are not necessarily prior to the application. Therefore, unless otherwise indicated herein, that which is described in this section is not prior art to the description and claims in this application and should not be admitted to be prior art merely because it is included in this section.

[0003] Traditional spice blanching technology is a commonly used pretreatment technology in food processing, mainly used for cleaning, removing impurities, microorganisms and part of enzyme activity on the surface of spices, to improve the quality and safety of spices. Although traditional spice blanching technology has many advantages, but in the actual application also has some shortcomings:

[0004] In the blanching process of spices, the volatilization of flavor substances is a non-negligible disadvantage. Spices, such as pepper, Sichuan pepper, clove, etc., contain rich volatile flavor components, which play a crucial role in imparting unique aroma and taste to food. However, in the pretreatment link of blanching, especially in the process of boiling water blanching, these flavor substances tend to volatilize in large quantities, resulting in the flavor of the final product being damaged. SUMMARY

[0005] In order to solve the technical problem of flavor damage in the processing of spices in the prior art, the purpose of the utility model is to provide a spice blanching device, the device comprises:

[0006] Heating area, mainly by the area surrounded by upper cover 14, lower cover 15, left shielding curtain 4, right shielding curtain 5, the spice 12 is blanched through the heating area;

[0007] Exhaust fan 9, one end is connected with the upper cover 14, the other end is connected with the condenser tube 8;

[0008] The condenser tube 8 condenses the gas delivered in the exhaust fan 9;

[0009] Recovery device 16, collecting the liquid condensed after the condenser tube.

[0010] Optionally, in some embodiments, the device further comprises: radio frequency heating upper plate 5 and radio frequency heating lower plate 2;

[0011] The radio frequency heating upper plate 5 is located above the heating area, and the radio frequency heating lower plate 2 is located below the heating area.

[0012] The radio frequency heating upper plate 5 and the radio frequency heating lower plate 2 are connected with the controller 6 through a radio frequency power supply.

[0013] Optionally, in some embodiments, the radio frequency heating upper plate 5 and the radio frequency heating lower plate 2 are placed parallel to each other, and the distance between the radio frequency heating upper plate 5 and the radio frequency heating lower plate 2 is between 8 cm and 15 cm.

[0014] Optionally, in some embodiments, further comprising: fixing screw rods 13, at least two, for fixing the radio frequency heating upper plate 5 and the radio frequency heating lower plate 2, so that the radio frequency heating upper plate 5 and the radio frequency heating lower plate 2 are parallel to each other and in a horizontal state.

[0015] Optionally, in some embodiments, the heating area is surrounded by a cover made of polytetrafluoroethylene, and the air pipe of the exhaust fan 9 communicates with the upper cover 14.

[0016] Optionally, in some embodiments, the radio frequency heating upper plate 5 and / or the radio frequency heating lower plate 2 are provided with a plurality of holes for airflow.

[0017] Optionally, in some embodiments, the motor of the hot air blower 7 is a variable frequency motor, and the temperature of the hot air blower 7 is 70-90℃.

[0018] Optionally, in some embodiments, further comprising: a hot air blower 7 connected with the lower cover 15 to provide heat source for the heating area.

[0019] Optionally, in some embodiments, further comprising: a conveyor belt 1 entering from the feeding port 3 of the heating area, crossing the heating area, and exiting from the discharging port 11 of the heating area, under the drive of the conveyor belt 1 drive motor, conveying the spices 12 placed on the conveyor belt 1 to the heating area.

[0020] Optionally, in some embodiments, the condenser pipe 8 is provided with a switch to control the oil-water mixture obtained after condensation to fall into the recycling device 16.

[0021] Optionally, in some embodiments, the heating area is further provided with a temperature measuring element connected with the controller 6.

[0022] Optionally, in some embodiments, the conveyor belt 1 drive motor is connected with the controller 6, and / or, the conveyor belt 1 is provided with holes for airflow to pass through.

[0023] The above technical solutions of the utility model have at least the following beneficial technical effects:

[0024] The spice blanching device provided by the utility model does not need to consider the shape characteristics of raw materials, can achieve the effect of completely blanching spices, can recycle volatile flavor substances generated by spices during the blanching process, has good applicability, continuous and rapid production and high efficiency, simple structure, high practicability, no pollution to the environment, and solves the problem of flavor damage during the processing of spices. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or in the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0026] Fig. 1 It is a kind of spice blanching device schematic diagram provided by the utility model embodiment;

[0027] Fig. 2 It is a kind of local enlarged view between conveyor belt and radio frequency upper and lower polar plate provided by the utility model embodiment;

[0028] Fig. 3 It is a kind of schematic diagram of conveyor belt and radio frequency upper and lower polar plate provided by the utility model embodiment.

[0029] Wherein, Figs. 1 to 3 The correspondence between the reference signs in and the component names is as follows:

[0030] 1-conveyor belt, 2-radio frequency heating lower polar plate, 3-feed inlet, 4-left shielding curtain, 5-radio frequency heating upper polar plate, 6-controller, 7-hot air blower, 8-condenser pipe, 9-exhaust fan, 10-right shielding curtain, 11-discharge port, 12-spice, 13-fixed screw, 14-upper cover, 15-lower cover, 16-recovery device. DETAILED DESCRIPTION

[0031] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0032] In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0033] If the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature; the technical solutions of various embodiments can be combined with each other, based on the realization of ordinary skilled in the art.

[0034] In the embodiments of the present application, when referring to A and / or B, it means A, B, and A and B.

[0035] It should be noted that the sequence numbers mentioned in the present application do not necessarily represent the strict order of execution in the actual specific implementation process. The sequence numbers are used to distinguish each step and prevent confusion.

[0036] In the drawings, a layer structure schematic diagram according to the embodiments of the present application is shown. These drawings are not drawn to scale, in which certain details are enlarged for the purpose of clarity, and certain details can be omitted. The shapes of various regions, layers shown in the drawings, and their relative size, position relationship are only exemplary, and in actual, there can be deviations due to manufacturing tolerances or technical limitations, and the skilled in the art can additionally design regions / layers with different shapes, sizes, relative positions according to actual needs.

[0037] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0038] During the blanching process of spices, the volatilization of flavor substances is a non-negligible disadvantage. Spices, such as pepper, Sichuan pepper, clove, etc., contain rich volatile flavor components, which play a crucial role in imparting unique aroma and taste to food. However, during the blanching process, especially during the boiling water blanching process, these flavor substances tend to volatilize in large quantities, resulting in the loss of flavor of the final product.

[0039] If these flavor substances can be effectively collected and recycled, they can be re-added in subsequent cooking or processing processes, thereby maintaining or even enhancing the original flavor of the spices, making the final product have a more rich and lasting aroma.

[0040] To solve the above problems, an embodiment of the utility model provides a kind of spice blanching device, as shown in Figs. 1 to 3 As shown, the device comprises:

[0041] Heating area, mainly by the region that upper cover 14, lower cover 15, left shielding curtain 4, right shielding curtain 5 are collectively enclosed, the spice is blanched by the heating area;

[0042] Exhaust fan 9, one end is connected with the upper cover 14, the other end is connected with condenser pipe 8;

[0043] The condenser pipe 8, gas delivered in the exhaust fan 9 is condensed;

[0044] Recycling device 16, collect the liquid condensed after the condenser pipe.

[0045] The utility model provides a kind of spice blanching device, without considering the shape characteristics of raw material, can reach the effect of thoroughly blanching spice, can also recycle volatile flavor substances generated in the blanching process of spice, the device is good in applicability, production is continuous fast and high in efficiency;Simple structure, strong practicality, no pollution to environment, solve the problem that flavor is damaged in the processing of spice.

[0046] As one of the embodiments, the device further comprises: RF heating upper plate 5 and RF heating lower plate 2;

[0047] The RF heating upper plate 5 is located above the heating area, and the RF heating lower plate 2 is located below the heating area;

[0048] The RF heating upper plate 5 and the RF heating lower plate 2 are connected to the controller 6 through the RF power supply.

[0049] As one of the embodiments, the RF heating upper plate 5 and the RF heating lower plate 2 are placed parallel to each other, and the distance between the RF heating upper plate 5 and the RF heating lower plate 2 is between 8 cm and 15 cm.

[0050] As one of the embodiments, it further comprises: fixed screw rod 13, the fixed screw rod 13 is at least two, used for fixing the RF heating upper plate 5 and the RF heating lower plate 2, so that the RF heating upper plate 5 and the RF heating lower plate 2 are parallel to each other and in a horizontal state.

[0051] As one of the embodiments, the heating area is surrounded by a cover made of polytetrafluoroethylene, and the air pipe of the air extractor 9 is in communication with the upper cover 14.

[0052] The heating of the upper plate 5 and the RF heating lower plate 2 can achieve rapid and efficient heating. RF heating has the characteristics of rapid and uniform heating, which can rapidly increase the temperature of the spices, thereby achieving efficient blanching. This efficient heating method helps to shorten the processing time and improve the production efficiency; and effectively improves the texture and flavor. During the RF heating process, the cell structure of the spices will change, such as cell wall degradation and cell membrane damage, which helps to improve the texture and flavor of the spices. At the same time, RF heating can also promote the release of volatile components in the spices, further enhancing their aroma and flavor; it can also effectively reduce the loss of nutrients. Compared with traditional heating methods, RF heating can reach the required temperature in a shorter time, thereby reducing the loss of nutrient components in the spices, which is of great significance to maintain the nutritional value and quality of the spices.

[0053] As one of the embodiments, the RF heating upper plate 5 and / or the RF heating lower plate 2 are provided with holes for airflow.

[0054] As one of the embodiments, the motor of the hot air blower 7 is a variable frequency motor, and the temperature of the hot air blower 7 is 70-90°C.

[0055] As one of the embodiments, it further comprises a hot air blower 7 connected to the lower cover 15 to provide heat source for the heating area.

[0056] As one of the embodiments, it further comprises a conveyor belt 1 which enters from the feeding port 3 of the heating area, crosses the heating area, and exits from the discharging port 11 of the heating area. Under the drive of the conveyor belt 1 drive motor, the spices placed on the conveyor belt 1 are conveyed to the heating area.

[0057] As one of the embodiments, the condenser pipe 8 is provided with a switch which controls the falling of the oil-water mixture obtained after condensation into the recycling device 16.

[0058] As one of the embodiments, the heating area is also provided with a temperature measuring element connected to the controller 6.

[0059] As one of the embodiments, the conveyor belt 1 drive motor is connected to the controller 6, and / or the conveyor belt 1 is provided with holes for airflow.

[0060] As Figs. 1 to 3As shown, a spice blanching device comprises a radio frequency heating upper plate 5, a radio frequency heating lower plate 2, a feeding port 3, a discharging port 11, a shielding curtain 2, a sample conveyor belt 1, an air extractor 9, a hot air machine 7, and a condenser tube 8. The radio frequency heating upper plate 5 is connected with a top cover made of polytetrafluoroethylene, which is further connected with the air extractor 9. The radio frequency heating lower plate 2 is connected with the hot air machine 7 at the bottom. The radio frequency heating upper plate 5 and the radio frequency heating lower plate 2 form a heating area therebetween. The conveyor belt 1 is arranged between and across the heating area. The radio frequency heating upper plate 5 and the radio frequency heating lower plate 2 are both connected with a radio frequency power source, which is connected with a controller. The feeding port 3 and the discharging port 11 are arranged at two ends of the area respectively, and each of the feeding port 3 and the discharging port 11 is provided with a shielding curtain. The distance between the radio frequency heating upper plate 5 and the radio frequency heating lower plate 2 is adjustable. The driving wheel of the conveyor belt 1 is driven by a speed-adjustable motor, which is connected with the controller 6. The conveyor belt 1 is uniformly provided with mesh holes. The radio frequency heating upper plate 5 and the radio frequency heating lower plate 2 are both provided with a plurality of holes through which air flows. The radio frequency heating lower plate 2 is provided below the hot air machine 7. The air pipe outlet of the hot air machine 7 is communicated with the holes provided on the radio frequency heating lower plate 2. The motor of the hot air machine 7 is a variable frequency motor. The radio frequency heating upper plate is provided above the air extractor 9. The air pipe of the air extractor 9 is communicated with the holes provided on the radio frequency heating upper plate. The motor of the air extractor 9 is a variable frequency motor. The outlet of the air extractor 9 is connected with the condenser tube 8. A recovery device is arranged below the condenser tube. The device further comprises a rack, which is arranged below a cavity. The conveyor belt 1 is arranged on the top of the rack. The radio frequency heating lower plate 2 is fixedly connected with the rack. A temperature measuring element is further arranged in the cavity, which is connected with the controller.

[0061] Fig. 1 The arrows in the figure represent the direction of the wind and the movement direction of the conveyor belt.

[0062] The distance between the radio frequency heating upper plate 5 and the radio frequency heating lower plate 2 can be flexibly adjusted according to the size of the spice, so as to achieve the optimal heating distance.

[0063] The conveyor belt and the radio frequency heating lower plate are uniformly provided with mesh holes, so that the hot air machine can more easily assist in heating and has the functions of drying and promoting ventilation. The air speed of the hot air machine can also be automatically adjusted. The radio frequency heating upper plate is also provided with uniform mesh holes, so that the volatile flavor substances of the spice can more easily flow into the air extractor.

[0064] The outlet of the air extractor is connected with the condenser tube. A recovery device is arranged below the condenser tube. Two shielding curtains are further arranged at the two ends of the feeding port and the discharging port.

[0065] The device further comprises a rack, which is arranged below a cavity. The conveyor belt is arranged on the top of the rack. The radio frequency heating lower plate is fixedly connected with the rack. A temperature measuring element is further arranged in the cavity, which is connected with the controller.

[0066] The heating temperature in the cavity is measured by the temperature measuring element arranged in the cavity, and is fed back to the controller, which adjusts the heating power according to the requirement.

[0067] The amount of spices dried each time is 3-7kg, and the oil-water mixture is 210g-490g, wherein the oil content is 178.5g-416.5g.

[0068] The distance between the upper RF heating plate 5 and the lower RF heating plate 2 can be adjusted according to the characteristics of the material;

[0069] The upper RF heating plate 5 and the lower RF heating plate 2 are made of titanium alloy, and the output power of the RF generator is 13.56, 27.12 or 40.68MHz;

[0070] The hot air fan has a power of 15kW, and the air extractor has a power of 15kW;

[0071] The conveying belt 1 passes through the heating area between the upper RF heating plate 5 and the lower RF heating plate 2 from the middle position in the vertical direction;

[0072] The distance between the upper RF heating plate 5 and the lower RF heating plate 2 is 8cm-15cm, and the accumulation thickness of the spices is 4-7cm.

[0073] The lower RF heating plate 2 is uniformly provided with circular holes for the hot air to pass through, and the upper RF heating plate is uniformly provided with circular holes for the volatile flavoring substances to pass through;

[0074] The air speed and the hot air temperature of the hot air fan 7 can be adjusted, and the hot air fan 7 is a variable frequency fan; the air speed of the air extractor 7 can be adjusted, and the air extractor is connected with the condenser pipe 8.

[0075] Optionally, as one of the embodiments, the conveying belt 1 is also provided with holes for a plurality of air flows to pass through, which can be the same as the holes on the upper RF heating plate 5 and / or the lower RF heating plate 2, so that the same process is adopted during processing, and the air flow can pass through conveniently; the holes are relatively small compared with the spices, and can carry the spices, and the air flow can pass through conveniently; the small holes are beneficial to the air flow of the hot air fan entering the heating area between the RF.

[0076] The upper conveying belt 1 is used for carrying the spices, and when reaching the conveying terminal, the carried spices fall to the designated position, and the conveying belt 1 returns to the lower position to carry the spices again.

[0077] The second purpose of the utility model is to provide a kind of drying method of spices RF, comprising:

[0078] 1) according to the resistant temperature and the kind of drying sample, select the distance between the upper RF plate and the lower RF plate suitable for the RF;

[0079] 2) According to the resistant temperature and the kind of the dried sample, the suitable control heating time can be selected by changing the conveying speed of the conveying belt, and the automatic adjustment can be realized.

[0080] Example 1: star anise radio frequency dry blanching

[0081] With reference to Fig. 1 , one embodiment of the utility model is the curing method of 5kg per hour. 5kg star anise needing drying is put into from the feed port 3, along with the movement of the conveying belt 1, the star anise is slowly sent to the heating chamber, that is, the heating area between the radio frequency heating upper plate 5 and the radio frequency heating lower plate 2, the distance between the upper plate 5 and the lower plate 2 is adjusted to 10cm, the star anise accumulation thickness is 6cm, the radio frequency generator is started to make the radio frequency output power 6kw, the radio frequency frequency is 27.12MHz, the controller 6 controls the radio frequency heating upper plate 5 and the radio frequency heating lower plate 2 to heat and dry the star anise, and the hot air blower 7 under the radio frequency heating lower plate 2 is started, the temperature is adjusted to 85 DEG C, the temperature in the thermostat is kept at 85 DEG C, the air extractor above the radio frequency heating upper plate 5, the controller 6 provides suitable heating power and time according to the quality of the star anise in the current heating chamber, to ensure that the material is completely dried and the volatile flavoring material is fully recovered;Finally, after the predetermined heating time 1 hour, the star anise is discharged by the movement of the conveying belt 1 through the discharge port 11, finally 350g of oil-water mixture is obtained, and the oil content is 300g by using the soxhlet extraction method.

[0082] The star anise is conveyed to the heating area in the cavity through an adjustable speed nylon conveying belt 1, the distance between the radio frequency heating plates is adjusted according to the speed of the conveying belt, the dielectric heating technology of radio frequency is used, when the star anise is placed in the high-frequency alternating electric field, the two poles of the polar molecules in the star anise will change rapidly with the change of the electric field, therefore the intermolecular friction and collision will generate heat, so that the temperature of the star anise is increased, the volatile flavoring material is extracted to the condenser tube 8 by the air extractor 9, to achieve the purpose of heating, drying and recovering the volatile flavoring material.

[0083] Example 2: Cinnamon radio frequency dry blanching

[0084] With reference to Fig. 1The utility model discloses a one embodiment for unit hour output is kg's ripening method. The need drying cassia bark is put from the feed inlet 3, along with the movement of conveyer belt 1, and cassia bark is slowly sent to the heating chamber, that is, the heating area between radio frequency heating upper polar plate 5 and radio frequency heating lower polar plate 2, and the distance between upper polar plate 5 and lower polar plate 2 is adjusted to 10cm, and the thickness of the eight corners is 6cm, and radio frequency generator is started to make the output power of radio frequency 6kw, and the radio frequency frequency is 27.12MHz, and controller 6 controls radio frequency heating upper polar plate 5 and radio frequency heating lower polar plate 2 to heat and dry cassia bark, and the hot air blower 7 under radio frequency heating lower polar plate 2 is started, and the temperature is adjusted to 85 DEG C, and the temperature in the thermostat is kept at 85 DEG C, and the air extractor on radio frequency heating upper polar plate 5, and controller 6 provides suitable heating power and time according to the quality of cassia bark in the current heating chamber, to ensure that the material is completely dried and the volatile flavoring material is fully recovered, and finally after the predetermined heating time 1 hour, cassia bark is discharged by the movement of conveyer belt 1 through the discharge port 11, and finally the oil-water mixture 350g is obtained, and the oil content is 300g by using the soxhlet extraction method.

[0085] Cassia bark is conveyed to the heating area in the cavity through an adjustable speed nylon conveyer belt 1, and the spacing between the radio frequency heating polar plates is adjusted according to the speed of the conveyer belt, and the dielectric heating technology of radio frequency is used, when the cassia bark is placed in the high-frequency alternating electric field, the two poles of the polar molecules in the cassia bark will change rapidly with the change of the electric field, so that the intermolecular friction and collision will generate heat, so that the temperature of the cassia bark is increased, and the volatile flavoring material is extracted to the condenser tube 8 by the air extractor 9 to achieve the purpose of heating and drying and recovering the volatile flavoring material.

[0086] Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0087] It should be understood that the above specific embodiments of the utility model are only used for example or explanation of the principle of the utility model, and do not constitute the limitation of the utility model. Therefore, any modification, equivalent replacement, improvement, etc. made without deviating from the spirit and scope of the utility model should be included in the protection scope of the utility model. In addition, the utility model claims attached are intended to cover all changes and modifications falling within the scope and boundary of the attached claims, or the equivalent form of such scope and boundary.

Claims

1. A spice blanching apparatus, characterized by, The device comprises: a heating area, mainly surrounded by the upper cover (14), the lower cover (15), the left shielding curtain (4) and the right shielding curtain (10), and the spice (12) is blanched through the heating area; a radio frequency heating upper plate (5) and a radio frequency heating lower plate (2), the radio frequency heating upper plate (5) is located above the heating area, the radio frequency heating lower plate (2) is located below the heating area, and the radio frequency heating upper plate (5) and the radio frequency heating lower plate (2) are connected with the controller (6) through a radio frequency power supply; an air extractor (9) connected with the upper cover (14) at one end and connected with a condenser pipe (8) at the other end; the condenser pipe (8) condenses the gas delivered from the air extractor (9); 2. The apparatus of claim 1, wherein, a recovery device (16) for collecting the liquid condensed by the condenser pipe.

3. The apparatus of claim 1, wherein, The radio frequency heating upper plate (5) and the radio frequency heating lower plate (2) are placed parallel to each other, and the distance between the radio frequency heating upper plate (5) and the radio frequency heating lower plate (2) is between 8 cm and 15 cm. Further comprising:

4. The apparatus of claim 1, wherein, a fixed screw rod (13), at least two, for fixing the radio frequency heating upper plate (5) and the radio frequency heating lower plate (2), so that the radio frequency heating upper plate (5) and the radio frequency heating lower plate (2) are parallel to each other and in a horizontal state.

5. The apparatus of claim 1, wherein, The heating area is also surrounded by a cover made of polytetrafluoroethylene, and the air pipe of the air extractor (9) communicates with the upper cover (14).

6. The apparatus of claim 1, wherein, The radio frequency heating upper plate (5) and / or the radio frequency heating lower plate (2) are provided with a plurality of holes for airflow.

7. The apparatus of claim 1, wherein, The condenser pipe (8) is provided with a switch, which controls the oil-water mixture obtained after condensation to fall into the recovery device (16). Further comprising:

8. The apparatus of any one of claims 1 to 6, wherein, a hot air blower (7) connected with the lower cover (15) to provide a heat source for the heating area. Further comprising:

9. The apparatus of claim 8, wherein, a conveyor belt (1) entering from the feeding port (3) of the heating area, crossing the heating area, and exiting from the discharging port (11) of the heating area, and under the drive of the drive motor of the conveyor belt (1), the spice (12) placed on the conveyor belt (1) is conveyed to the heating area. The drive motor of the conveyor belt (1) is connected with the controller (6), and / or a plurality of holes for airflow are provided on the conveyor belt (1).

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