CN111227277B - Production equipment and production process of fresh and crisp melon seeds - Google Patents

Abstract

The invention discloses a production device for fresh and crisp melon seeds and a production process thereof. The production device adopts an upside-down overturned drum structure, and electric heating devices and stirring mechanisms are arranged at the top and bottom of the drum. The stirring blades of the stirring mechanism also have long blades and short blades, which can effectively overturn the melon seeds at the center and edge of the drum bottom, so that the melon seeds in the drum body can flow evenly and quickly along the stirring shaft as a whole; in addition, the drum overturns once at intervals, so that the melon seeds in the drum are lifted up and fall back to the bottom of the drum, so that all the melon seeds in the drum can be overturned and flow, and combined with baking with electric heating wires, the melon seeds can be heated more evenly and fully, the probability of insufficient or excessive baking of the melon seeds can be reduced, the overall quality of the melon seeds product can be significantly improved, and the obtained melon seeds are fresh, crisp and delicious; and the frying method of coordinating up and down rolling with stirring can make the melon seeds be fried more quickly and shorten the frying time.

Description

A kind of production equipment and production process of fresh and crisp melon seeds

Technical Field

The invention relates to food processing equipment, and more particularly to production equipment and a production process for fresh and crisp melon seeds.

Background Art

Melon seeds are very popular for their unique taste and high nutritional value. There are many kinds of melon seeds on the market, and the flavors of melon seeds are becoming more and more diverse to provide consumers with more choices. Especially fried melon seeds are more popular. At present, automatic roasting machines have long replaced the traditional manual roasting method and become the most commonly used melon seed production equipment.

Whether the melon seeds can be evenly roasted directly affects the taste of the melon seeds. Melon seeds that are evenly and fully heated have a fresh and crisp taste, while melon seeds that are not heated enough or over-roasted will not have a fresh and crisp taste. Therefore, whether the melon seeds can be fully and evenly roasted is also an important performance indicator of the automatic roasting machine.

A Chinese patent with patent number CN201620177766.1 discloses an automatic melon seed roasting machine. By arranging a stirring shaft inside the machine body and a heating tube on the inner wall of the machine body, the melon seeds can be evenly heated while being stirred and heated.

However, this type of melon seed roasting machine only stirs the melon seeds through a stirring shaft. Only the melon seeds close to the stirring shaft can be effectively stirred, while the melon seeds far away from the stirring shaft will not be effectively stirred. The melon seeds in the machine cannot flow evenly over a large range. It usually takes a long time to roast the melon seeds, and there is often a certain amount of under-roasted or over-roasted melon seeds among the roasted melon seeds. The overall quality of the produced melon seeds still has room for improvement.

Summary of the invention

In view of the deficiencies in the prior art, the object of the present invention is to provide a production device and a production process for fresh and crisp melon seeds, which can improve the overall quality of the melon seeds to obtain a fresh and crisp taste and can shorten the frying time.

To achieve the above object, the present invention provides the following technical solutions:

A production device for fresh and crisp melon seeds, comprising a base, a pair of vertical support columns fixed on the base, a roller arranged between the two support columns, the roller being a sealed structure, both sides of the roller being rotatably connected to the upper ends of support rods, a closable bin cover being also arranged on the side of the roller, a flip motor for driving the roller to flip up and down is fixedly installed on the outer side of the support column on one side of the roller, the interior of the roller is a vertically symmetrical structure, comprising a middle section, a top end and a bottom end, the top end and the bottom end of the cylinder are both funnel-shaped structures, and a sandwich structure is arranged in the top end and the bottom end of the cylinder, the sandwich structure is a containing cavity, electric heating wires are arranged in the containing cavity at the top end and the containing cavity at the bottom end, and the electric heating wires are bent and coiled and attached to the inner wall of the roller And welded on the inner wall of the drum, the outer layer of the drum is provided with a heat insulation layer, and the top and bottom ends of the drum are also provided with a stirring mechanism which is symmetrical up and down, the stirring mechanism includes a stirring shaft and a driving motor, the shell of the driving motor is connected and fixed to the drum, the output shaft of the driving motor penetrates into the drum and is fixed coaxially with the stirring shaft, and the stirring shaft is sequentially fixed with a stirring short blade and a stirring long blade along its length direction, the distance between the stirring short blade and the driving motor is smaller than the distance between the stirring long blade and the driving motor, the stirring long blade and the stirring short blade are both arranged along the radial direction of the stirring shaft, and the length of the stirring long blade is greater than the length of the stirring short blade, the stirring long blade and the stirring short blade are both curled in shape, and the stirring long blade and the stirring short blade are both upwardly curled.

As a preferred solution: a spiral conveying blade is coaxially fixed on the stirring shaft, and the distance between the spiral conveying blade and the driving motor is greater than the distance between the long stirring blade and the driving motor. A long strip-shaped propulsion arm is also fixed on the stirring shaft, and the propulsion arm is arranged along the radial direction of the stirring shaft. The distance between the propulsion arm and the driving motor is greater than the distance between the spiral conveying blade and the driving motor. Multiple groups of pushing plates are arranged on the top and bottom surfaces of the propulsion arm, one end of the pushing plate is connected and fixed to the propulsion arm, and the other end of the pushing plate extends to the rear of the propulsion arm, and the pushing plate is inclined toward the outside of the stirring shaft.

As a preferred solution: a lower pressure plate is also provided at the end of the propulsion arm, the front and rear parts of the lower pressure plate both protrude from the propulsion arm, the front part of the lower pressure plate is an upwardly inclined upturned part, and the rear part of the lower pressure plate is a downwardly inclined downturned part.

As a preferred solution: the top end of the drum and the connecting portion between the top end and the middle section of the drum are arc-shaped.

As a preferred solution: the stirring shaft is fixed with a rotary cutting blade, the distance between the rotary cutting blade and the driving motor is greater than the distance between the propulsion arm and the driving motor, and the rotary cutting blade includes a plurality of blades arranged radially along the stirring shaft.

As a preferred solution: the blades of the rotary cutting blades are grid-shaped blades having a plurality of mesh holes arranged in a grid shape.

As a preferred solution: an annular inwardly protruding ramp is provided in the middle of the drum, the inner edge of the ramp is sealed with the inner wall of the drum, the top and bottom surfaces of the ramp are both annular conical surfaces, so that the thickness of the inner part of the ramp is smaller than the thickness of the outer part, and the rotary cutting blades are all located on the inner side of the ramp.

As a preferred solution: the interior of the inclined platform is a hollow structure, and a plurality of arc-shaped grooves are opened on the top and bottom surfaces of the inclined platform along its circumference, and a movable arc-shaped vibration plate is arranged in each groove, a vibrator is installed and fixed on the inner side surface of the vibration plate, and the edge of the vibration plate is connected to the edge of the groove by a flexible connecting frame.

A production process of fresh and crisp melon seeds, characterized in that it comprises the following steps:

S1. Place an appropriate amount of washed and dried raw melon seeds into the drum, add an appropriate amount of sand, and close the lid.

S2. Start the production equipment and control the electric heating wire to start heating, and heat the top and bottom walls of the drum to 200°C.

S3, control the second motor to start and the third motor to stop at the same time, the second motor rotates at 6 rpm for 2 minutes, and controls the first motor to turn the drum upward by 180°;

S4, controlling the third motor to start running and the second motor to stop, the third motor continuously rotates at a speed of 6 rpm for 2 min, and controlling the first motor to flip the drum upward by 180°;

S5, repeating steps S3 and S4 10 times in a loop, thereby obtaining fresh and crisp melon seeds;

S6. Turn off the production equipment and pour out the roasted melon seeds.

Compared with the prior art, the present invention has the following advantages:

1. The production equipment adopts an upside-down flipping drum structure, and electric heating devices and stirring mechanisms are arranged at the top and bottom of the drum. The stirring blades of the stirring mechanism also have long blades and short blades, which can effectively flip the melon seeds in the center and edge of the bottom of the drum, so that the melon seeds in the drum can flow evenly and quickly along the stirring shaft; in addition, the drum flips once every period of time, so that the melon seeds in the drum are lifted up and fall back to the bottom of the drum, so that the melon seeds in the drum can be flipped and flowed, and combined with the baking of the electric heating wire, the melon seeds can be heated more evenly and fully, reducing the probability of insufficient or over-baking of the melon seeds, significantly improving the overall quality of the finished melon seeds, and the obtained melon seeds are fresh, crisp and delicious; and the frying method of rolling up and down and stirring can make the melon seeds fried more quickly and shorten the frying time.

2. Due to the special structure of the stirring shaft, the melon seeds will circulate at the bottom of the cylinder when they are fried, allowing the melon seeds to be heated more fully and evenly.

3. The melon seeds are broken up twice in the process of being lifted up and falling back, so they can be evenly scattered to various parts of the bottom of the cylinder, which is also conducive to uniform heating during the frying process.

4. The falling melon seeds are collected to the scattering mechanism through the inclined platform structure, and the melon seeds are made to collide with each other in the air through the vibration plate, which can further improve the uniformity of the scattering of the melon seeds and further promote the uniform frying of the melon seeds.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the external structure of a fresh and crisp melon seed production equipment;

Fig. 2 is a schematic diagram of the internal structure of a fresh and crisp melon seed production equipment;

FIG3 is a schematic diagram of the structure of a rotary cutting blade;

FIG4 is a schematic diagram of the structure of the propulsion arm;

Fig. 5 is a top view of the ramp;

FIG. 6 is a schematic diagram of the internal structure of the ramp.

Explanation of the reference numerals: 1. base; 2. support column; 3. roller; 301. cylinder; 302. accommodating chamber; 303. heat insulation layer; 4. bin cover; 5. bearing; 6. connecting shaft; 7. gear commutator; 8. first motor; 9. second motor; 10. third motor; 11. heating wire; 12. stirring shaft; 13. stirring short blades; 14. stirring long blades; 15. spiral conveying blades; 16. propulsion arm; 17. pushing plate; 18. lower pressure plate; 19. rotary cutting blades; 20. mesh; 21. inclined table; 22. vibration plate; 23. connecting frame; 24. vibrator; 25. threading hole.

DETAILED DESCRIPTION

Embodiment 1:

Referring to Fig. 1, a production device for fresh and crisp melon seeds includes a base 1, a pair of vertical support columns 2 are fixed on the base 1, a drum 3 is arranged between the two support columns 2, the drum 3 is a sealing structure, a bearing 5 is installed on the upper end of the support column 2, the outer ring of the bearing 5 is relatively fixed to the support column 2, and a horizontal connecting shaft 6 is fixed on both sides of the drum 3, the connecting shaft 6 passes through the inner ring of the bearing 5 and is relatively fixed thereto, so that the drum 3 can rotate freely around the connecting shaft 6. A closable bin cover 4 is also arranged on the side of the drum 3, which is used to pour raw melon seeds into the drum 3 and pour out the cooked melon seeds in the drum 3. In order to facilitate the pouring out of the cooked melon seeds, in this embodiment, the side of the drum 3 where the bin cover 4 is located is set to be funnel-shaped.

Fig. 2 is a schematic diagram of the initial state of the production setting. As shown in Fig. 2, a first motor 8 is fixedly mounted on the outer side of the support column 2 on one side of the drum 3, and the output shaft of the first motor 8 is connected to the connecting shaft 6 through a gear commutator 7. The rotation of the first motor 8 can drive the connecting shaft 6 to rotate, thereby driving the drum 3 to rotate.

The interior of the drum 3 is a vertically symmetrical structure, including a middle section, a top and a bottom. The top and bottom of the cylinder 301 are both funnel-shaped structures, and a sandwich structure is provided in the top and bottom of the cylinder 301. The sandwich structure is a receiving cavity 302. The receiving cavity 302 at the top and the receiving cavity 302 at the bottom are both provided with electric heating wires 11. The electric heating wires 11 are bent and coiled against the inner wall of the drum 3 and welded and fixed on the inner wall of the drum 3. The outer layer of the drum 3 is provided with a heat insulation layer 303 to prevent people from being scalded. The top and bottom of the drum 3 are also provided with a first stirring mechanism and a second stirring mechanism that are vertically symmetrical. The first stirring mechanism has the same structure as the second stirring mechanism, and the first stirring mechanism and the second stirring mechanism are both driven by a motor. Take the first stirring mechanism as an example: the first stirring mechanism includes a stirring shaft 12 and a second motor 9, the housing of the second motor 9 is connected and fixed to the top of the drum 3, the output shaft of the second motor 9 penetrates into the drum 3 and is coaxially fixed with the stirring shaft 12, and a sealing gasket is sleeved on the output shaft of the second motor 9 to prevent melon seeds or impurities from falling into the gap between the output shaft and the drum 3, and a stirring short blade 13 and a stirring long blade 14 are fixed in sequence along the length direction of the stirring shaft 12, wherein the distance between the stirring short blade 13 and the second motor 9 is less than the distance between the stirring long blade 14 and the second motor 9. The stirring long blade 14 and the stirring short blade 13 are both arranged along the radial direction of the stirring shaft 12, and the length of the stirring long blade 14 is greater than the length of the stirring short blade 13, and the stirring long blade 14 and the stirring short blade 13 are both in a curled shape and the stirring long blade 14 and the stirring short blade 13 are both upwardly tilted. Similarly, the second stirring mechanism includes a stirring shaft 12 and a third motor 10.

The working principle of the production equipment is as follows: the drum 3 is turned to a suitable angle to facilitate opening the bin cover 4, and then the bin cover 4 is opened, and the washed and dried raw melon seeds are poured into the drum 3, and then the bin cover 4 is closed. The amount of raw melon seeds poured into the drum 3 should be such that both the stirring long leaves 14 and the stirring short leaves 13 are covered with melon seeds. Then the bin cover 4 is closed and the production equipment of the equipment is started. After the production equipment is started, the electric heating wires 11 in the top and bottom ends of the drum 3 are energized at the same time and start to generate heat, heating the inner top wall and the inner bottom wall of the drum 3, and at the same time the third motor 10 is started, thereby driving the second stirring mechanism to stir the melon seeds, and baking the melon seeds while stirring; after a period of time, the first motor 8 is started and drives the drum 3 to turn upward 180 degrees, at which time the top and bottom ends of the drum 3 are interchanged, the first stirring mechanism is switched to the lower end of the drum 3, and the second stirring mechanism is switched to the upper end of the drum 3. During this process, the melon seeds in the drum 3 will be lifted up and fall back to the bottom of the drum 3 again; then, the second stirring structure switched to the upper end of the drum 3 stops moving, and at the same time the first stirring mechanism switched to the lower end of the drum 3 is driven by the second motor 9 to start running, and the stirring short leaves 13 will move the drum The melon seeds in the center area of the bottom are stirred, and the long stirring leaves 14 stir the melon seeds in the edge area of the bottom of the cylinder. The melon seeds at the bottom of the cylinder can be fully stirred by the cooperation of the long stirring leaves 14 and the short stirring leaves 13, and the melon seeds are heated and baked by the electric heating wire 11 at the bottom of the cylinder during the stirring process, so that the melon seeds at the bottom of the cylinder can be fully and evenly heated; after a period of time, the first motor 8 drives the drum 3 to flip 180 degrees in the opposite direction. At this time, the first stirring mechanism and the second stirring mechanism exchange positions again. During this process, the melon seeds in the drum 3 are lifted up and fall back to the bottom of the drum 3, and then the first stirring mechanism stops moving and the second stirring mechanism starts running again, and the melon seeds at the bottom of the cylinder are stirred by the second stirring mechanism again; after a period of time, the first motor 8 drives the drum 3 to flip 180 degrees upward again, and the cycle is repeated.

The production equipment, through the upside-down flipping drum 3 structure, flips the melon seeds in the drum 3 at intervals, and electric heating areas are set in the top and bottom of the drum 3 to fully and evenly stir the melon seeds at the bottom of the drum 3, so that the melon seeds at the bottom of the drum 3 are generally stirred while being baked. Through repeated stirring and baking and multiple flipping of the drum 3, the melon seeds in the drum 3 can be fully in contact with the heating area at the bottom of the drum, avoiding some melon seeds from being insufficiently baked and not crispy, and some melon seeds from being over-baked and burnt, thus affecting the taste. The melon seeds produced by the production equipment are evenly fried and have a fresh and crisp taste.

Referring to Fig. 2, in this embodiment, spiral conveying blades 15 are coaxially fixed on the stirring shafts 12 of the first stirring mechanism and the second stirring mechanism, and the distance between the spiral conveying blades 15 on each stirring mechanism and the driving motor of the stirring mechanism is greater than the distance between the stirring blades 14 on the stirring mechanism and the driving motor of the stirring mechanism; in addition, a long strip-shaped propulsion arm 16 is also fixed on the stirring shaft 12 of each stirring mechanism, and the propulsion arm 16 is arranged along the radial direction of the stirring shaft 12, and the distance between the propulsion arm 16 on each stirring mechanism and the driving motor of the stirring mechanism is greater than the distance between the spiral conveying blades 15 on the stirring mechanism and the driving motor of the stirring mechanism. Referring to Fig. 4, multiple groups of pushing plates 17 are arranged on the top and bottom surfaces of the pushing arm 16, one end of the pushing plate 17 is connected and fixed to the pushing arm 16, and the other end of the pushing plate 17 extends to the rear of the pushing arm 16, and the pushing plate 17 is inclined to the outside of the stirring shaft 12.

During the operation of the stirring shaft 12, the spiral conveying blades 15 convey the melon seeds in the area around the stirring shaft 12 upward, so that the melon seeds below the central area of the bottom of the cylinder can be turned up from bottom to top, thereby forming a gap below the central area of the bottom of the cylinder; the long stirring blades 14 and the short stirring blades 13 stir the melon seeds in the central area and the edge area of the bottom of the cylinder respectively, so that there are melon seeds to fill the aforementioned gap; in addition, since the inclined pushing plates 17 on the top and bottom surfaces of the propulsion arms 16 have a guiding function, when the propulsion arms 16 rotate synchronously with the stirring shaft 12, the melon seeds can be filled in the above-mentioned gap. During the process, the pushing plate 17 can tilt the melon seeds away from the stirring shaft 12, that is, the melon seeds transported upward by the spiral conveying blades 15 can be gradually pushed to the edge of the bottom of the cylinder, so that these melon seeds can be stirred by the stirring short blades 13 and the stirring long blades 14, so that the melon seeds transported upward by the spiral conveying blades 15 can eventually fall back to the lower layer of the bottom of the cylinder from the outer side of the central area of the bottom of the cylinder and the edge of the bottom of the cylinder, and gather along the bottom wall of the drum 3 to the lower end area of the stirring shaft 12, and are lifted up by the spiral conveying blades 15 again, and so on. The direction of the circulation of melon seeds at the bottom of the cylinder is shown by the dotted arrow in Figure 2. Through the cooperation of the spiral conveying blades 15, the propulsion arm 16, the stirring long blades 14 and the stirring short blades 13, a large circulation of melon seeds can be formed at the bottom of the cylinder, and the melon seeds as a whole will move in the direction of rotation of the stirring shaft 12, while moving, circulating and baking, so that the melon seeds at the bottom of the cylinder can be more fully and evenly fried, further improving the fresh and crisp taste of the melon seeds as a whole.

Since the edge of the bottom of the drum is far away from the stirring shaft 12, the melon seeds at the edge of the bottom of the drum will flow back to the lower end area of the stirring shaft 12 relatively slowly, so there is still room for improvement.

As shown in FIG4 , in this embodiment, a lower pressing plate 18 is also provided at the end of the propulsion arm 16. The front and rear parts of the lower pressing plate 18 both protrude from the propulsion arm 16. The front part of the lower pressing plate 18 is an upwardly inclined upturned part, and the rear part of the lower pressing plate 18 is a downwardly inclined downturned part. When the propulsion arm 16 rotates with the stirring shaft 12, the upwardly inclined part and the downwardly inclined part of the lower pressing plate 18 can generate a downward component force on the melon seeds, and the component force applies pressure to the melon seeds. The upwardly inclined part guides the melon seeds that are higher than the propulsion arm 16 to the bottom of the push-down pressing plate 18, so that the lower pressing plate 18 compacts the melon seeds, and then the downwardly inclined part applies downward pressure to the compacted melon seeds, so that the melon seeds at the edge of the bottom of the cylinder are squeezed to the lower layer, and finally flow back to the lower end area of the stirring shaft 12 along the bottom wall of the drum 3. The addition of the lower pressure plate 18 can exert pressure on the melon seeds at the edge of the bottom of the cylinder, thereby increasing the speed of the melon seeds returning from the edge, making the large circulation of the melon seeds more uniform and thorough.

In order to enable the melon seeds at the edge of the bottom of the drum to be pressed down to the lower layer of the edge more smoothly, in this embodiment, the top of the drum 3 and the connecting part between the top and the middle section of the drum 3 are designed to be arc-shaped.

Referring to Fig. 1, in this embodiment, rotary cutting blades 19 are fixed on the stirring shafts 12 of the first stirring mechanism and the second stirring mechanism, and the distance between the rotary cutting blades 19 on each stirring mechanism and the driving motor of the stirring mechanism is greater than the distance between the propulsion arm 16 on the stirring mechanism and the driving motor of the stirring mechanism. Referring to Fig. 4, each set of rotary cutting blades 19 includes a plurality of blades arranged along the radial direction of the stirring shaft 12. The rotary cutting blades 19 rotate synchronously with the stirring shaft 12. In the process of the first motor 8 driving the drum 3 to flip up and down, the melon seeds will be lifted up and fall back to the bottom of the drum. In the process of falling back, the melon seeds will contact the rotary cutting blades 19 and then continue to fall. The rotary cutting blades 19 can break up the melon seeds that fall together, so that the melon seeds are evenly scattered on the bottom of the drum, avoiding local accumulation too high, which is conducive to subsequent stirring and frying. In this embodiment, two sets of rotary cutting blades 19 are used to break up the falling melon seeds, which can achieve a better breaking effect.

Referring to FIG3 , the rotary blade 19 in this embodiment is a grid-shaped blade having a plurality of meshes 20 arranged in a grid shape. The size of the meshes 20 is large enough to allow the melon seeds to pass through. After the falling melon seeds come into contact with the rotary blade 19, a portion of the melon seeds directly pass through the meshes 20 in a dispersed manner and fall freely, while the other portion of the melon seeds are thrown out and fall to the edge of the bottom of the cylinder. In this way, the melon seeds can fall back in a more dispersed manner.

In this embodiment, an annular inwardly protruding ramp 21 is also provided in the middle of the drum 3. The inner edge of the ramp 21 is sealed to the inner wall of the drum 3. The top and bottom surfaces of the ramp 21 are both annular conical surfaces, so that the thickness of the inner part of the ramp 21 is less than the thickness of the outer part. Both groups of rotary cutting blades 19 are located on the inner side of the ramp 21. When the first motor 8 drives the drum 3 to flip up and down, the melon seeds falling from the edge of the drum 3 will fall on the annular conical surface of the ramp 21 during the falling process, and will gather along the conical surface to the inner part, and then fall onto the rotary cutting blade 19. By providing the ramp 21, the melon seeds can be gathered above the rotary cutting blade 19, so that the melon seeds are concentrated and fall from the top of the rotary cutting blade 19. In this way, all the lifted melon seeds can pass through the rotary cutting blade 19, thereby improving the effect of breaking up.

Referring to Figures 2, 4 and 5, the interior of the inclined platform 21 in this embodiment is a hollow structure, and a plurality of arc-shaped slots are provided on the top and bottom surfaces of the inclined platform 21 along its circumference, and a movable arc-shaped vibration plate 22 is provided in each slot, and a vibrator 24 is fixedly mounted on the inner side of the vibration plate 22, and a flexible connection frame 23 is provided between the edge of the vibration plate 22 and the edge of the slot, and a threading hole 25 connected to the interior of the inclined platform 21 is provided on the side wall of the drum 3 for the cable connected to the vibrator 24 to pass through. It should be pointed out that: threading holes 25 (not shown in the figure) connected to the accommodating cavity 302 are also provided on the side walls at both ends of the drum 3, so as to allow the cable connected to the heating wire 11 to pass through. The connection frame 23 in this embodiment is a rubber frame, which is riveted to the edge of the slotted edge or the edge of the vibration plate 22.

During the process of the drum 3 flipping up and down, the vibrator 24 starts, driving the vibration plate 22 to vibrate synchronously. When the falling melon seeds fall onto the inclined platform 21 and contact the vibration plate 22, the vibration plate 22 vibrates the melon seeds and throws them to the rotary cutting blades 19, so that the melon seeds can collide with each other above the rotary cutting blades 19 and then be broken up by the rotary cutting blades 19, which can achieve a better breaking effect and make the melon seeds fall back to the bottom of the drum 3 more evenly.

Embodiment 2:

A production process for fresh and crisp melon seeds requires the production equipment in Example 1, and the production process comprises the following steps:

S1. Place an appropriate amount of washed and dried raw melon seeds into the drum, add an appropriate amount of sand, and close the lid.

S2. Start the production equipment and control the electric heating wire to start heating, and heat the top and bottom walls of the drum to 200°C.

S3, control the second motor to start and the third motor to stop at the same time, the second motor rotates at 6 rpm for 2 minutes, and controls the first motor to turn the drum upward by 180°;

S4, controlling the third motor to start running and the second motor to stop, the third motor continuously rotates at a speed of 6 rpm for 2 min, and controlling the first motor to flip the drum upward by 180°;

S5, repeating steps S3 and S4 10 times in a loop, thereby obtaining fresh and crisp melon seeds;

S6. Turn off the production equipment and pour out the roasted melon seeds.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (7)

1. A production equipment for fresh and crisp melon seeds, comprising a base, on which a pair of vertical support columns are fixed, characterized in that: a roller is arranged between the two support columns, the roller is a sealing structure, both sides of the roller are rotatably connected to the upper ends of the support rods, and the side of the roller is also provided with an openable and closable bin cover, and a turning motor for driving the roller to turn up and down is fixedly installed on the outer side of the support column on one side of the roller, the interior of the roller is a top-down symmetrical structure, including a middle section, a top end and a bottom end, the top end and the bottom end of the roller are both funnel-shaped structures, and sandwich structures are arranged in the top end and the bottom end of the roller, the sandwich structure is a accommodating cavity, and electric heating wires are arranged in the accommodating cavity at the top end and the accommodating cavity at the bottom end, and the electric heating wires are bent and coiled and close to the roller The inner wall of the cylinder is welded to the inner wall of the drum, the outer layer of the drum is provided with a heat insulation layer, the top and bottom ends of the drum are also provided with a stirring mechanism symmetrical up and down, the stirring mechanism includes a stirring shaft and a driving motor, the housing of the driving motor is connected and fixed to the drum, the output shaft of the driving motor penetrates into the drum and is coaxially fixed with the stirring shaft, the stirring shaft is sequentially fixed with a stirring short blade and a stirring long blade along its length direction, the distance between the stirring short blade and the driving motor is smaller than the distance between the stirring long blade and the driving motor, the stirring long blade and the stirring short blade are both arranged along the radial direction of the stirring shaft, and the length of the stirring long blade is greater than the length of the stirring short blade, the stirring long blade and the stirring short blade are both in a curled shape, and the stirring long blade and the stirring short blade are both upwardly tilted; An annular inwardly protruding inclined platform is provided in the middle of the drum, the inner edge of the inclined platform is sealed with the inner wall of the drum, the top and bottom surfaces of the inclined platform are both annular conical surfaces, so that the thickness of the inner part of the inclined platform is smaller than the thickness of the outer part thereof, and rotary cutting blades are fixed on the stirring shaft, and the rotary cutting blades are all located on the inner side of the inclined platform; The interior of the inclined platform is a hollow structure, and a plurality of arc-shaped grooves are provided on the top and bottom surfaces of the inclined platform along the circumference thereof, and a movable arc-shaped vibration plate is provided in each groove, a vibrator is fixedly mounted on the inner side surface of the vibration plate, and the edge of the vibration plate is connected to the edge of the groove by a flexible connecting frame. 2. The production equipment of fresh and crisp melon seeds according to claim 1 is characterized in that: a spiral conveying blade is coaxially fixed on the stirring shaft, the distance between the spiral conveying blade and the driving motor is greater than the distance between the long stirring blade and the driving motor, and a long strip-shaped propulsion arm is also fixed on the stirring shaft, the propulsion arm is arranged along the radial direction of the stirring shaft, the distance between the propulsion arm and the driving motor is greater than the distance between the spiral conveying blade and the driving motor, and multiple groups of pushing plates are arranged on the top and bottom surfaces of the propulsion arm, one end of the pushing plate is connected and fixed to the propulsion arm, and the other end of the pushing plate extends to the rear of the propulsion arm, and the pushing plate is inclined toward the outside of the stirring shaft. 3. The production equipment of fresh and crisp melon seeds according to claim 2 is characterized in that: a lower pressure plate is also provided at the end of the propulsion arm, the front and rear parts of the lower pressure plate both protrude from the propulsion arm, the front part of the lower pressure plate is an upwardly inclined upturned part, and the rear part of the lower pressure plate is a downwardly inclined downward inclined part. 4. The production equipment for fresh and crisp melon seeds according to claim 3 is characterized in that the top end of the drum and the connecting part between the top end and the middle section of the drum are arc-shaped. 5. The production equipment of fresh and crisp melon seeds according to claim 4 is characterized in that the distance between the rotary cutting blade and the driving motor is greater than the distance between the propulsion arm and the driving motor, and the rotary cutting blade includes a plurality of blades arranged radially along the stirring shaft. 6. The production equipment of fresh and crisp melon seeds according to claim 5 is characterized in that the blades of the rotary cutting leaves are grid-shaped blades having a plurality of mesh holes arranged in a grid shape. 7. A production process for fresh and crisp melon seeds, using the production equipment according to any one of claims 1 to 6 for production, characterized in that it comprises the following steps: S1. Place an appropriate amount of washed and dried raw melon seeds into the drum, add an appropriate amount of sand, and close the lid; S2. Start the production equipment and control the electric heating wire to start heating, and heat the top and bottom walls of the drum to 200°C. S3, control the second motor to start and the third motor to stop at the same time, the second motor rotates at 6 rpm for 2 minutes, and controls the first motor to turn the drum upward by 180°; S4, controlling the third motor to start running and the second motor to stop, the third motor continuously rotates at a speed of 6 rpm for 2 min, and controlling the first motor to flip the drum upward by 180°; S5, repeating steps S3 and S4 10 times in a loop, thereby obtaining fresh and crisp melon seeds; S6. Turn off the production equipment and pour out the roasted melon seeds.