Melon seed drying device

Abstract

The utility model relates to a melon seed drying device. The drying device comprises a drying barrel, a lifting barrel and a heating cover, a drying cavity is formed between the drying barrel and the lifting barrel, a sealing cover is arranged at the upper end of the lifting barrel, a feeding hopper is arranged at the upper end of the drying barrel, a cover plate capable of being opened and closed is arranged on the feeding hopper, the upper half section of the lifting barrel is an air outlet section, and the lower half section of the lifting barrel is a discharging section; the drying device further comprises a lifting mechanism capable of pushing the lifting barrel to move up and down, a heating assembly is arranged in the heating cover, an air blowing device for blowing air into the heating cover is further arranged, and a plurality of air inlets communicated with the drying cavity are formed in the drying barrel. In the whole drying and cooling process, melon seeds are in a static state, and certain abrasion can be generated only in the feeding and discharging process, so that the melon seeds produced by the melon seed drying and cooling device can keep relatively complete natural lines, and the appearance is better.

Description

Technical Field

[0001] The utility model relates to a melon seed production device, in particular to a melon seed drying device. Background Art

[0002] The production process of melon seeds is a complex and delicate process. The following are the main steps: raw material preparation, the melon seed raw materials will go through a series of screening and grading steps, including removing impurities and separating the shriveled seeds by a specific gravity machine. The raw materials will also be divided into different grades according to the seed weight for different product productions; cleaning, after screening and grading, the melon seeds will be cleaned to remove the dust and impurities on the surface; boiling and stewing, during the boiling process, corresponding water and auxiliary materials will be added to the melon seeds, heated to a certain temperature and boiled for a period of time to make the melon seeds fully absorb the flavor of the seasonings. After boiling, the melon seeds will be stewed, adding essence and keeping warm for a period of time to make the melon seeds flavorful; baking and cooling, after boiling and stewing, the melon seeds will be transferred to a drying room or other drying facilities for baking until the melon seeds become crispy. After baking, the melon seeds will be cooled for subsequent processing; selection and packaging, the melon seeds will be selected to remove any remaining moldy, yellow-skinned or worm-eaten melon seeds, and then, they will be packaged according to the packaging requirements to ensure that the seal is flat and tight.

[0003] In the existing baking and cooling process, generally, drying equipment is used to bake the boiled melon seeds and then they are naturally cooled and dried. The operating principle of the existing common melon seed baking equipment is similar to that of a drum washing machine. By continuously tumbling, the contact between the melon seeds and the hot dry air is increased to improve the drying rate, but this will increase the wear of the melon seed shells. There is originally a thin skin with patterns on the surface of the melon seed shells. After this thin skin is worn, the melon seed shells no longer have patterns, resulting in a worse appearance of the melon seeds. Therefore, it is necessary to develop a melon seed drying device with high drying efficiency and without damaging the patterns of the melon seeds. Summary of the Invention

[0004] The utility model provides a melon seed drying device, which solves the problem that the patterns of the melon seed shells will be damaged during the drying process in the prior art.

[0005] The above technical problems of the present utility model are mainly solved by the following technical solutions: A melon seed drying device, characterized in that it includes a vertically arranged drying barrel, a hollow lifting barrel arranged inside the drying barrel, and a heating cover sleeved outside the drying barrel. A drying cavity is formed between the drying barrel and the lifting barrel. The lower end of the drying barrel is slidably and fittingly arranged with the outer wall of the lifting barrel. The upper end of the lifting barrel is provided with a conical sealing cover. The upper end of the drying barrel is provided with a feeding hopper facing the sealing cover. The feeding hopper is provided with an openable and closable cover plate. The upper half of the lifting barrel is set as an air outlet section, and the lower half is set as a material discharging section. The air outlet section is provided with a plurality of air outlets, and the material discharging section is provided with a plurality of large-diameter material discharging holes. The drying device further includes a lifting mechanism that can push the lifting barrel to move up and down. The heating cover is provided with a heating component using electric heat or liquid heat, and a blowing device for blowing air into the heating cover is also provided. The drying barrel is provided with a plurality of air inlets communicating with the drying cavity, and melon seeds cannot pass through the air inlets and air outlets.

[0006] The drying process of the present utility model is as follows: Open the cover plate to make the feeding hopper open, pour the melon seeds to be dried from the feeding hopper. These melon seeds will flow towards the surrounding drying cavities under the guidance of the conical sealing cover. The main body of the drying cavity is in a circular cylinder structure and has a relatively thin thickness. The thickness of the melon seeds piled up in the drying cavity is between 4 and 8 cm. Such a thickness allows air to pass through relatively easily. When the melon seeds are almost about to cover the sealing cover, stop feeding and close the cover plate; then the heating component and the blowing device start to work. The hot air will sequentially pass through the air inlets, the drying cavity and the air outlets, continuously flow through the gaps between the melon seeds, accelerate evaporation and take away water vapor. The drying time can be adjusted by presetting. When the drying is completed, the heating component will stop working, and the blowing device will continue to work for cooling and drying the melon seeds. When the melon seeds are cooled, the lifting mechanism can control the lifting barrel to slowly rise until the material discharging section enters the drying cavity. At this time, the melon seeds in the drying cavity will flow out from the material discharging holes to complete the discharging.

[0007] Therefore, the present utility model has the following characteristics compared with the prior art: 1. During the entire drying and cooling process of the present utility model, the melon seeds are in a static state, and only a certain amount of wear will occur during the feeding and discharging processes. Therefore, the melon seeds produced by the present utility model can maintain relatively complete natural textures and have a better appearance; 2. The present utility model can perform air-cooling on the dried melon seeds, which can effectively shorten the overall production time of the melon seeds and improve production efficiency. Description of the Drawings

[0008] Appendix Figure 1 is a structural schematic diagram of the present utility model. Detailed Embodiments

[0009] The technical solution of the present utility model will be further specifically described below through embodiments in conjunction with the accompanying drawings.

[0010] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation to the present utility model.

[0011] Embodiment 1: Refer to Figure 1 , a melon seed drying device, including a bracket 30, a vertically arranged drying barrel 100, a hollow lifting barrel 200 arranged inside the drying barrel, and a heating cover 300 sleeved outside the drying barrel. Both the drying barrel and the lifting barrel are made of stainless steel. A drying cavity 400 is formed between the drying barrel and the lifting barrel. The lower end of the drying barrel is slidably and fittingly arranged with the outer wall of the lifting barrel. The upper end of the lifting barrel is provided with a conical sealing cover 210. The upper end of the drying barrel is provided with a feeding hopper 110 facing the sealing cover. A rotatable and openable cover plate 120 is rotatably connected to the feeding hopper. The upper half of the lifting barrel is set as an air outlet section, and the lower half is set as a blanking section. A plurality of air outlet holes 220 are provided on the air outlet section, and a plurality of large-diameter blanking holes 230 are provided on the blanking section. This embodiment also includes a lifting mechanism that can push the lifting barrel up and down. The lifting mechanism includes three to four electric cylinders 10. The electric cylinders are vertically fixed downward on the upper side of the drying barrel and are distributed in a circular array. The telescopic rods of the electric cylinders penetrate through the drying barrel and are fixedly connected to the sealing cover. An electric heating component 500 is provided inside the heating cover, and a blowing device for blowing air into the heating cover is also provided. A plurality of air inlet holes 130 communicating with the drying cavity and a temperature sensor for measuring temperature are provided on the drying barrel. The air inlet holes and the air outlet holes are vertically distributed thin strips. A plurality of circular hole-shaped air outlet holes can also be provided on the sealing cover, and melon seeds cannot pass through the air inlet holes and the air outlet holes; a collecting hopper 600 and an exhaust and blanking port 610 located at the bottom of the collecting hopper are provided on the lower side of the lifting barrel.

[0012] The drying process of this embodiment is as follows: open the cover plate so that the feeding hopper is open, pour the melon seeds to be dried from the feeding hopper, these melon seeds will flow to the surrounding drying chamber under the guidance of the conical sealing cover, the main body of the drying chamber is a circular cylindrical structure, and the thickness is relatively thin, the thickness of the melon seeds piled in the drying chamber is between 4 and 8 cm, such a thickness allows air to pass relatively easily, when the melon seeds are about to be submerged in the sealing cover, stop feeding and close the cover plate; then the heating component and the blasting device start working, the hot air will pass through the air inlet, the drying chamber and the air outlet in turn, and continuously flow through the gaps between the melon seeds, accelerate evaporation and take away water vapor, the drying time can be adjusted by preset, when the drying is completed, the heating component will stop working, and the blasting device will continue to work, which is used for cooling and drying the melon seeds. When the melon seeds are cooled, the lifting mechanism can control the lifting barrel to rise slowly until the unloading section enters the drying chamber, at which time the melon seeds in the drying chamber will flow out from the unloading hole, and the unloading is completed.

[0013] In the whole drying and cooling process of this embodiment, the melon seeds are in a static state, and only a certain amount of wear and tear occurs during the feeding and unloading process. Therefore, the melon seeds produced by this embodiment can maintain relatively complete natural textures and have a good appearance.

[0014] The outer side of the heating cover in this embodiment is also provided with a heat insulation layer 310. The material of the heat insulation layer is preferably mineral wool, which is a fiber material made of minerals such as asbestos, glass fiber or rock wool, and has good heat insulation and fire resistance.

[0015] The blowing device includes a blower and 3 to 6 blower pipes 20. The blower is connected to the blower pipes, which are arranged in a circular array on the heating cover. This arrangement can make the airflow in various places in the drying chamber tend to be consistent, avoiding large differences in drying rates in different areas.

[0016] It is obvious to those skilled in the art that the utility model can be changed in many ways, and such changes are not considered to be out of the scope of the utility model. All such modifications obvious to those skilled in the art will be included in the scope of the claims.

Claims

1. A melon seed drying device, characterized in that: The invention comprises a drying barrel arranged vertically, a hollow lifting barrel arranged in the drying barrel and a heating cover sleeved on the outside of the drying barrel, a drying chamber is formed between the drying barrel and the lifting barrel, the lower end of the drying barrel is slidably fitted with the outer wall of the lifting barrel, the upper end of the lifting barrel is provided with a conical sealing cover, the upper end of the drying barrel is provided with a feeding hopper facing the sealing cover, the feeding hopper is provided with an openable and closable cover plate, the upper half of the lifting barrel is set as an air outlet section, and the lower half is set as a feeding section, the air outlet section is provided with a plurality of air outlets, and the feeding section is provided with a plurality of large-diameter feeding holes, the drying device also comprises a lifting mechanism which can push the lifting barrel to move up and down, an electric heating or liquid heating heating component is provided in the heating cover, and a blowing device for blowing air into the heating cover is also provided, the drying barrel is provided with a plurality of air inlets which are connected with the drying chamber, and melon seeds cannot pass through the air inlets and air outlets.

2. The melon seed drying device according to claim 1, characterized in that: The lifting mechanism includes three to four electric cylinders, which are fixed vertically downward on the upper side of the drying barrel, and telescopic rods of the electric cylinders penetrate the drying barrel and are fixedly connected to the sealing cover.

3. The melon seed drying device according to claim 2, characterized in that: The outer side of the heating cover is also provided with a heat insulation layer.

4. The melon seed drying device according to claim 1, characterized in that: The blowing device comprises a blower and 3 to 6 blowing pipes, wherein the blower is connected to the blowing pipes, and the blowing pipes are arranged in a circular array and penetrate the heating cover.

5. The melon seed drying device according to claim 1, characterized in that: A material collecting hopper and an exhaust and material dropping port located at the bottom of the material collecting hopper are provided on the lower side of the lifting barrel.

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