Production method for circulating and drying shelled materials, circulating and drying device, and production line for drying shelled materials

Abstract

A production method for circulating and drying shelled materials, a circulating drying device, and a production line for drying shelled materials. This method primarily addresses technical issues with existing drying equipment, such as large production site footprint, reduced space utilization, low thermal energy utilization, and high costs. Key technical features include: the circulating drying device comprises a dryer housing, a conveyor belt, a discharge air-blocking mechanism, a conveying mechanism, a shelling mechanism, a separating mechanism, and a hot air mechanism. The conveyor belt and discharge air-blocking mechanism are movably disposed within the dryer housing, extending from one end of the dryer housing to the other. The shelling mechanism, separating mechanism, and hot air mechanism are disposed outside the dryer housing and are each connected to the dryer housing. Conveying mechanisms are provided between the dryer housing and the shelling mechanism, between the shelling mechanism and the separating mechanism, and between the separating mechanism and the dryer housing. Material within the dryer housing passes through the shelling mechanism and the separating mechanism before returning to the dryer housing. This method is primarily used for drying shelled materials.

Description

Technical Field

[0001] The invention relates to a circulating drying device, in particular to a production method for circulating and drying shelled materials, a circulating drying device and a production line for drying shelled materials. Background Art

[0002] At present, there are many tea fruit bursting and drying machines on the market. This set of equipment is generally composed of a bursting machine, a seed-pu-li separator, a tea seed secondary dryer, a heat source and a conveying equipment. Such tea fruit drying equipment must be equipped with two sets of drying lines, because there is a layer of pu-li on the surface of the tea fruit, and the seed-pu-li must be separated before oil extraction. The main purpose of the front-end bursting machine is to burst the tea fruit, not to dry the tea pu-li thoroughly, which requires lower heat energy. The subsequent tea fruit needs high-temperature drying to produce the finished product. It is precisely because of this that the bursting and drying process of tea fruit is complicated and tedious, resulting in an increase in the cost of bursting and drying of tea fruit. At the same time, there are also problems such as large production site occupation area, reduced space utilization, and low heat energy utilization.

[0003] For example, in the invention application No. 2021112874035, a production process and system for oil-tea camellia fruit is used, and multiple devices are used. The entire production line is very long and occupies a large area, and the space utilization rate is not high. At the same time, the existing system uses a camellia seed blasting machine at the front end and an oil-tea camellia seed drying machine at the back end, which consumes a lot of electricity. The combined thermal energy utilization rate of the two is not high;

[0004] Based on the existing production line or system, the present invention greatly reduces unnecessary equipment, improves the drying environment, and uses heat energy for processing different processes through the differential distribution characteristics of heat energy in the drying equipment. The present invention can also perform multiple cycle processing when necessary, saving energy. Summary of the Invention

[0005] The purpose of the present invention is to provide a production method for circulating and drying shelled materials, a circulating drying device and a production line for drying shelled materials, which have high thermal energy utilization, greatly reduce the production site footprint, reduce costs and are simple to operate.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a production method for circulating and drying shelled materials, comprising the following steps:

[0007] S1. Start the hot air mechanism, which delivers hot air to the sides and / or bottom of the dryer casing into the dryer casing. The amount of hot air delivered to the upper side of the dryer casing by the hot air mechanism is greater than the amount of hot air delivered to the lower side and / or bottom of the dryer casing by the hot air mechanism, so that the temperature of the upper end of the dryer casing is controlled at 65°C to 70°C, and the temperature of the lower end of the dryer casing is controlled at 60°C to 65°C. The hot air mechanism recovers the weakened hot air from the top of the dryer casing, reheats it, and delivers the hot air to the bottom and / or sides of the dryer casing into the dryer casing, forming a hot air circulation to ensure a stable temperature inside the dryer casing.

[0008] S2, put the shelled material into the conveyor belt at the upper end of the dryer shell from the feed port, and increase the time the material stays in the dryer shell through the conveyor belt to ensure pre-treatment heating, so that the shell of the shelled material is in a cracked state, and is transported to the discharge port by the conveyor belt and taken out of the dryer shell;

[0009] S3, the shelled material leaving the drying shell is transported to the shelling mechanism by the conveying mechanism, and the shell of the shelled material is shelled and crushed;

[0010] S4, after the shell is crushed, the shelled material is transported to the separation mechanism through the conveying mechanism for separation processing;

[0011] S5, the shelled material after separation is transported back to the conveyor belt of the lower end feed port of the drying machine shell by the conveyor mechanism, and the shelled material is transported by the conveyor belt to ensure the drying time in the drying machine shell. After the drying is completed, it is transported by the conveyor belt to the discharge port and taken out of the drying machine shell;

[0012] S6. The shelled material leaving the drying machine shell is transported to the separation mechanism again along the conveying mechanism for secondary separation treatment to obtain the required finished product material.

[0013] A circulation drying device, the circulation drying device comprises a drying machine shell, multiple conveyor belts, a discharge air-blocking mechanism, multiple conveying mechanisms, a shelling mechanism, a separation mechanism and a hot air mechanism, the multiple conveyor belts and the discharge air-blocking mechanism are arranged in the drying machine shell, the conveyor belt extends from one end inside the drying machine shell to the other end inside the drying machine shell, the conveyor belt is arranged horizontally, the shelling mechanism, the separation mechanism and the hot air mechanism are arranged outside the drying machine shell and are respectively connected to the drying machine shell, the conveying mechanisms are respectively arranged between the drying machine shell and the shelling mechanism, between the shelling mechanism and the separation mechanism, and between the separation mechanism and the drying machine shell, the materials in the drying machine shell are sequentially returned to the drying machine shell after passing through the shelling mechanism and the separation mechanism, so as to realize circulation drying of the materials;

[0014] The dryer shell of the present invention is provided with a feed port, a discharge port, an air inlet and a return air port. A conveyor belt is provided at the lower end of the feed port to transport materials and help the materials to be processed for a long time in the dryer shell. The discharge port is provided below the conveying end of the conveyor belt. The discharge air-blocking mechanism is provided on the discharge port to assist in discharging materials and reduce the entry of external air into the dryer shell.

[0015] The circulating drying device of the present invention further comprises a feed air-blocking mechanism, which is arranged on the feed inlet to assist in uniform feeding and reduce the entry of external air into the drying machine housing;

[0016] The feed inlet of the present invention includes a first feed inlet and a second feed inlet, wherein the first feed inlet is arranged at the top of the dryer shell, preferably, one side of the top of the dryer shell is close to the short side of the dryer shell, and the second feed inlet is arranged on the side of the dryer shell, preferably, the second feed inlet is arranged on the short side of the dryer shell;

[0017] The air inlet of the present invention is arranged at the upper end of the side surface of the dryer casing near the conveyor belt and the lower end of the side surface of the dryer casing and / or at the bottom end of the dryer casing. Preferably, the air inlet is arranged on the long side surface of the dryer casing near the conveyor belt and / or at the bottom end of the dryer casing and close to the bottom of the conveyor belt; the return air inlet is arranged at the upper end of the side surface of the dryer casing and / or at the top end of the dryer casing. Preferably, the return air inlet is arranged at the upper end of the long side surface of the dryer casing and higher than the air inlet arranged on the long side surface and / or at the top end of the dryer casing and close to the top of the conveyor belt.

[0018] The hot air mechanism of the present invention circulates and recovers drying hot air to the drying machine housing, and the hot air mechanism is connected to the air inlet and the return air outlet respectively;

[0019] The conveying mechanism of the present invention is used to transport the dried materials to the shelling mechanism and the separation mechanism in sequence to carry out the shelling and separation processes of the materials.

[0020] The conveying mechanism of the present invention includes a first conveying mechanism, a second conveying mechanism and a third conveying mechanism, wherein one end of the first conveying mechanism is arranged at the lower end of the discharge port, and the other end is connected to the feed end of the shelling mechanism;

[0021] One end of the second conveying mechanism of the present invention is connected to the discharging end of the shelling mechanism, and the other end is connected to the feeding end of the separation mechanism;

[0022] One end of the third conveying mechanism of the present invention is connected to the discharge end of the separation mechanism, and the other end is connected to the second feed port.

[0023] A discharge trough is provided on the dryer shell of the present invention at the connection with the discharge port, the discharge air-blocking mechanism is arranged in the discharge trough and rotates, the discharge port includes a first discharge port and a second discharge port, and the lower end of the first discharge port corresponds to the first conveying mechanism.

[0024] The discharging and air-blocking mechanism of the present invention includes a discharging shaft movably connected to the discharging trough, a plurality of discharging plates connected to the discharging shaft, and a plurality of air-blocking plates connected to the discharging plates. One end of the discharging plate is fixedly connected to the discharging shaft, and the discharging shaft drives the discharging plate to rotate; the other end is bent inward to prevent excessive material from squeezing the inner wall of the discharging trough, causing increased friction and making it impossible to discharge material; the air-blocking plate extends outward along the end of the discharging plate close to the discharging trough, reducing the gap between the plate and the discharging trough, so that when the discharging and air-blocking mechanism is not working, the hot air in the drying machine casing cannot overflow from the discharge port.

[0025] The conveyor belt of the present invention includes a pretreatment conveyor belt and a drying conveyor belt. One end of the pretreatment conveyor belt is correspondingly arranged at the lower end of the first feed port, and the other end extends to the upper end of the first discharge port. The material enters the drying machine shell through the first feed port for a preheating treatment process and then leaves the drying machine shell; one end of the drying conveyor belt is correspondingly arranged at the lower end of the second feed port, and the other end extends to the upper end of the second discharge port. The treated material enters the drying machine shell again through the second feed port for a drying treatment process and then leaves the drying machine shell, realizing double-circulation drying of two production processes.

[0026] The pretreatment conveyor belt of the present invention includes a first pretreatment conveyor belt and a second pretreatment conveyor belt, and a pretreatment guide plate is provided between the end of the first pretreatment conveyor belt and the end of the second pretreatment conveyor belt, one end of the first pretreatment conveyor belt is correspondingly arranged at the lower end of the first feed port, and the other end extends along the side end of the dryer shell close to the end inside the dryer shell, the end of the first pretreatment conveyor belt is close to the pretreatment guide plate, and the pretreatment guide plate is inclined facing the second pretreatment conveyor belt, and one end of the second pretreatment conveyor belt is correspondingly arranged at the lower end of the pretreatment guide plate, and the other end extends along the side end of the dryer shell to the upper end of the first discharge port at the inner end of the dryer shell.

[0027] Optionally, the pretreatment conveyor belt of the present invention includes a first pretreatment conveyor belt, a second pretreatment conveyor belt and a third pretreatment conveyor belt, the first pretreatment conveyor belt, the second pretreatment conveyor belt and the third pretreatment conveyor belt are arranged in sequence from top to bottom, and pretreatment guide plates are respectively provided between the first pretreatment conveyor belt and the second pretreatment conveyor belt and between the second pretreatment conveyor belt and the third pretreatment conveyor belt, one end of the first pretreatment conveyor belt is correspondingly arranged at the lower end of the first feed port, one end of the second pretreatment conveyor belt is arranged at the lower end of the corresponding pretreatment guide plate, one end of the third pretreatment conveyor belt is arranged at the lower end of the corresponding pretreatment guide plate, and the other end extends along the side end of the dryer shell to the upper end of the first discharge port at the inner end of the dryer shell.

[0028] The drying conveyor belt of the present invention includes a first drying conveyor belt and a second drying conveyor belt. A drying guide plate is provided between the end of the first drying conveyor belt and the end of the second drying conveyor belt. One end of the first drying conveyor belt is correspondingly arranged at the lower end of the second feed port, and the other end extends along the side end of the dryer shell close to the end inside the dryer shell. The end of the first drying conveyor belt is close to the drying guide plate, and the drying guide plate is inclined facing the second drying conveyor belt. One end of the second drying conveyor belt is correspondingly arranged at the lower end of the drying guide plate, and the other end extends along the side end of the dryer shell to the upper end of the second discharge port at the inner end of the dryer shell.

[0029] Optionally, the drying conveyor belt of the present invention includes a first drying conveyor belt, a second drying conveyor belt and a third drying conveyor belt, which are arranged in sequence from top to bottom, and drying guide plates are respectively provided between the first drying conveyor belt and the second drying conveyor belt and between the second drying conveyor belt and the third drying conveyor belt, one end of the first drying conveyor belt is correspondingly arranged at the lower end of the second feed port, one end of the second drying conveyor belt is arranged at the lower end of the corresponding drying guide plate, one end of the third drying conveyor belt is arranged at the lower end of the corresponding drying guide plate, and the other end extends along the side end of the drying machine shell to the upper end of the second discharge port at the inner end of the drying machine shell.

[0030] The hot air mechanism of the present invention includes a hot air device, an air supply device, and a return air device. The hot air device is used to provide hot air to the inside of the dryer shell. The hot air device is connected to the air supply device. The air supply device is used to pressurize and supply the hot air generated by the hot air device. The air supply device is provided with an air supply duct connected to the air inlet on the dryer shell; the return air device is provided with a return air duct connected to the return air outlet on the dryer shell. The return air device is connected to the hot air device. The return air device is used to recover the hot air inside the dryer shell and transport it to the hot air device for reheating.

[0031] Optionally, the air supply device of the present invention includes a first air supply device and a second air supply device, the first air supply device is connected to the air inlet arranged on the upper part of the side of the dryer shell, and the second air supply device is connected to the air inlet arranged on the lower part of the side of the dryer shell; it can directly act on the material on the conveyor belt inside the dryer shell.

[0032] Optionally, the air supply device of the present invention includes a first air supply device and a second air supply device. The first air supply device is connected to the air inlet arranged on the upper side of the dryer shell, and the second air supply device is connected to the air inlet arranged at the bottom end of the dryer shell, which can quickly fill the dryer shell with hot air.

[0033] Preferably, the air supply device of the present invention includes a first air supply device, a second air supply device and a third air supply device. The first air supply device is connected to the air inlet arranged on the upper part of the side of the dryer shell, and the second air supply device is connected to the air inlet arranged on the lower part of the side of the dryer shell; the third air supply device is connected to the air inlet arranged at the bottom end of the dryer shell, which can ensure that the temperature inside the dryer shell is stable and the material is heated steadily.

[0034] The conveying mechanism of the present invention also includes a fourth conveying mechanism, one end of which is arranged at the lower end of the second discharge port on the drying machine shell, and the other end is connected to the feed end of the separation mechanism to perform secondary separation and screening on the material.

[0035] The outer peripheral surface of the drying machine shell of the present invention is wrapped with heat-insulating material to reduce heat loss.

[0036] The present invention provides a production line for drying shelled materials, which includes the above-mentioned circulating drying device, a loader connected to the feed port and a control system that simultaneously controls the circulating drying device and the loader. A plurality of sensing controllers are respectively provided on the drying machine shell, conveyor belt, discharging air-proof mechanism, conveying mechanism, shelling mechanism, separation mechanism, hot air mechanism and loader in the circulating drying device. The control system monitors and controls the start and stop of the drying machine shell, conveyor belt, discharging air-proof mechanism, conveying mechanism, shelling mechanism, separation mechanism, hot air mechanism and loader in real time by receiving the sensing controller signal, and monitors and detects the internal temperature of the drying machine shell, the transportation speed of the material on the conveyor belt, the discharge amount of the discharging air-proof mechanism, the transportation speed of the conveying mechanism, the shelling efficiency of the shelling mechanism, the output of the separation mechanism, the air outlet of the hot air mechanism and the unloading amount of the loader, and coordinates the conveyor belt, discharging air-proof mechanism, conveying mechanism, shelling mechanism, separation mechanism, hot air mechanism and loader.

[0037] The beneficial effects of the present invention are: the steps and equipment for drying the oil tea fruit twice are combined into one, thereby reducing the cost of the dryer; since the number of dryers is reduced, the hot air device is also reduced, thereby reducing the cost of the entire oil tea fruit production line; the overall area of ​​the oil tea fruit production line is made more compact and the utilization rate is high. A site where only one oil tea fruit production line could be originally set up can be used to set up two sets of the production lines of the present invention, thereby improving the processing efficiency of the oil tea fruit and reducing the processing cost of the oil tea fruit. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the structure inside the drying machine shell of the present invention;

[0039] Figure 2 This is a schematic structural diagram of the discharge air-blocking mechanism of the present invention;

[0040] Figure 3 It is a schematic diagram of the conveyor belt assembly structure of the present invention;

[0041] Figure 4 This is a schematic diagram of the outer structure of the drying machine of the present invention;

[0042] Figure 5 is a top view of the drying machine housing of the present invention;

[0043] Figure 6 It is a schematic diagram of the production line of the present invention;

[0044] Figure 7 is a top view of the hot air mechanism of the present invention;

[0045] Figure 8 It is a side view of the hot air mechanism of the present invention.

[0046] In the figure: 1-circulation drying device, 2-loader, 11-drying machine shell, 12-conveyor belt, 13-discharging air-blocking mechanism, 14-conveyor mechanism, 15-shelling mechanism, 16-separation mechanism, 17-hot air mechanism, 111-first feeding port, 112-second feeding port, 113-first discharging port, 114-second discharging port, 116-air inlet, 118-return air outlet, 121-pretreatment conveyor belt, 1211-first pretreatment conveyor belt, 1212-second pretreatment conveyor belt, 1219- Pretreatment guide plate, 122-drying conveyor belt, 131-discharge shaft, 132-discharge plate, 133-air shut-off plate, 1161-first air inlet, 1162-second air inlet, 1163-third air inlet, 181-first feed air shut-off mechanism, 182-second feed air shut-off mechanism, 141-first conveying mechanism, 142-second conveying mechanism, 143-third conveying mechanism, 144-fourth conveying mechanism, 171-hot air device, 172-first air supply device, 173-second air supply device. DETAILED DESCRIPTION

[0047] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and does not constitute any limitation on the present application and its application or use. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0051] Unless otherwise specified, the relative arrangement of components and steps, numerical expressions, and values ​​described in these embodiments do not limit the scope of this application. It should be understood that, for ease of description, the structures, proportions, sizes, etc. shown in the accompanying drawings are merely intended to complement the disclosure disclosed herein for those skilled in the art to understand and appreciate, and are not intended to limit the limitations upon which this application may be implemented. Any structural modifications, changes in proportional relationships, or adjustments in size, without affecting the efficacy and objectives achieved by this application, should still fall within the scope of the technical content disclosed herein. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but, where appropriate, should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely illustrative and not limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures represent similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0052] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0053] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0054] Example 1, see Figure 1 The circulating drying device of the present invention includes a drying machine shell 11, multiple conveyor belts 12, and a discharge air-blocking mechanism 13. The multiple conveyor belts 12 and the discharge air-blocking mechanism 13 are movably arranged in the drying machine shell 11. The conveyor belt 12 extends from one end of the drying machine shell 11 to the other end of the drying machine shell. The conveyor belt 12 is arranged horizontally. The drying machine shell 11 is provided with a feed port and a discharge port. The feed port includes a first feed port 111 and a second feed port 112. The first feed port 111 is arranged on the top side of the drying machine shell 11 close to the short side of the drying machine shell, and the second feed port 112 is arranged on the top side of the drying machine shell 11 close to the short side of the drying machine shell. The feed port 112 is arranged on the short side of the drying machine shell 11, and the discharge port includes a first discharge port 113 and a second discharge port 114, and the discharge air-blocking mechanism 13 is respectively arranged on the first discharge port 113 and the second discharge port 114; the conveyor belt 12 of the present invention includes a pretreatment conveyor belt 121 and a drying conveyor belt 122, and one end of the pretreatment conveyor belt 121 is correspondingly arranged at the lower end of the first feed port 111; one end of the drying conveyor belt 122 is correspondingly arranged at the lower end of the second feed port 112; the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0055] Example 2, see Figure 2The discharging and air-blocking mechanism 13 of the present invention includes a discharging shaft 131 movably connected to the discharging trough, a plurality of discharging plates 132 connected to the discharging shaft, and a plurality of air-blocking plates 133 connected to the discharging plates. One end of the discharging plate 132 is fixedly connected to the discharging shaft 131, and the discharging shaft 131 drives the discharging plate 132 to rotate; the other end is bent inward to prevent excessive material from squeezing the inner wall of the discharging trough, causing increased friction and making it impossible to discharge material; the air-blocking plate 133 extends outward along the end of the discharging plate 132 to approach the discharging trough of the drying machine shell 11, reducing the gap between the discharging and air-blocking mechanism 13, so that when the discharging and air-blocking mechanism 13 is not working, the hot air in the drying machine shell cannot overflow from the discharge port; the rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0056] Example 3, see Figure 3 The pretreatment conveyor belt 121 of the present invention includes a first pretreatment conveyor belt 1211 and a second pretreatment conveyor belt 1212, and a pretreatment guide plate 1219 is provided between the end of the first pretreatment conveyor belt 1211 and the end of the second pretreatment conveyor belt 1212. One end of the first pretreatment conveyor belt 1211 is correspondingly arranged at the lower end of the first feed port 111, and the other end extends along the side end of the dryer shell close to the end inside the dryer shell. The end of the first pretreatment conveyor belt 1211 is close to the pretreatment guide plate 1219, and the pretreatment guide plate 1219 is inclined facing the second pretreatment conveyor belt 1212. One end of the second pretreatment conveyor belt 1212 is correspondingly arranged at the lower end of the pretreatment guide plate 1219, and the other end extends along the side end of the dryer shell to the end inside the dryer shell; the rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0057] Example 4, see Figure 1 The drying conveyor belt 122 of the present invention includes a first drying conveyor belt and a second drying conveyor belt, a drying guide plate is provided between the end of the first drying conveyor belt and the end of the second drying conveyor belt, one end of the first drying conveyor belt is correspondingly arranged at the lower end of the second feeding port, and the other end extends along the side end of the drying machine shell close to the end inside the drying machine shell, the end of the first drying conveyor belt is close to the drying guide plate, and the drying guide plate is inclined facing the second drying conveyor belt, one end of the second drying conveyor belt is correspondingly arranged at the lower end of the drying guide plate, and the other end extends along the side end of the drying machine shell to the upper end of the second discharge port at the inner end of the drying machine shell; the rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0058] Example 5, see Figure 4The dryer shell 11 of the present invention is provided with an air inlet 116, and the air inlet 116 includes a first air inlet 1161, a second air inlet 1162 and a third air inlet 1163. The second air inlet 1162 is provided on the long side of the dryer shell close to the conveyor belt, the first air inlet 1161 is provided at the upper end of the long side of the dryer shell and is higher than the second air inlet 1162 provided on the long side, and the third air inlet 1163 is provided at the bottom end of the dryer shell and close to the bottom of the conveyor belt; the rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0059] Example 6, see Figure 5 The drying machine shell 11 of the present invention is also provided with a return air port 118, and the return air port 118 is arranged at the top of the drying machine shell and close to the top of the conveyor belt. The circulating drying device 1 of the present invention also includes a feeding air-blocking mechanism, and the feeding air-blocking mechanism includes a first feeding air-blocking mechanism 181 and a second feeding air-blocking mechanism 182. The first feeding air-blocking mechanism 181 is correspondingly arranged on the first feeding port 111, and the second feeding air-blocking mechanism 182 is correspondingly arranged on the second feeding port 112, to assist in uniform feeding and reduce the entry of external air into the drying machine shell; the rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0060] Example 7, see Figure 6The present invention provides a production line for drying shelled materials, the production line comprising the above-mentioned circulating drying device 1, a feeder 2 connected to the feed port of the circulating drying device 1, the circulating drying device comprising a plurality of conveying mechanisms 14, a shelling mechanism 15, a separation mechanism 16 and a hot air mechanism 17, the shelling mechanism 15, the separation mechanism 16 and the hot air mechanism 17 are arranged outside the drying machine shell and are respectively connected to the drying machine shell, the conveying mechanism 14 of the present invention comprises a first conveying mechanism 141, a second conveying mechanism 142, a third conveying mechanism 143 and a fourth conveying mechanism 144, the first conveying mechanism 141 is arranged between the drying machine shell and the shelling mechanism 15, the second conveying mechanism 142 is arranged between the shelling mechanism 15 and the separation mechanism 16, and the third conveying mechanism 143 is respectively arranged between the separation mechanism 16 and the drying machine shell. The conveying mechanism 143 and the fourth conveying mechanism 144, the material in the dryer shell is returned to the dryer shell after passing through the shelling mechanism and the separation mechanism in turn, so as to realize the circulating drying of the material. One end of the first conveying mechanism 141 is arranged at the lower end of the first discharge port, and the other end is connected to the feed end of the shelling mechanism 15; one end of the second conveying mechanism 142 of the present invention is connected to the discharge end of the shelling mechanism 15, and the other end is connected to the feed end of the separation mechanism 16; one end of the third conveying mechanism 143 of the present invention is connected to the discharge end of the separation mechanism 16, and the other end is connected to the second feed port; one end of the fourth conveying mechanism 144 is arranged at the lower end of the second discharge port on the dryer shell, and the other end is connected to the feed end of the separation mechanism 16, so as to perform secondary separation and screening on the material; the rest is the same as any other embodiment of the present invention or a combination of more than two embodiments.

[0061] Example 8, see Figure 7 The hot air mechanism 17 of the present invention includes a hot air device 171, a first air supply device 172, and a second air supply device 173. The hot air device 171 is used to provide hot air to the inside of the drying machine casing. The hot air device 171 is connected to the first air supply device 172 and the second air supply device 173. The air supply device is used to pressurize the hot air generated by the hot air device 171 and supply air. The air supply device is provided with an air supply duct connected to the air inlet on the drying machine casing. The second air supply device 173 is arranged close to the hot air device 171 to preferentially transport the hot air into the drying machine casing to ensure the high temperature of the first process; the return air device is provided with a return air duct connected to the return air outlet on the drying machine casing, the return air device is connected to the hot air device 171, and the return air device is used to recover the hot air inside the drying machine casing and transport it to the hot air device for reheating; the rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.

[0062] Example 9. The present invention provides a production line for drying shelled materials. The production line includes the above-mentioned circulating drying device, a loader connected to the feed port, and a control system for simultaneously controlling the circulating drying device and the loader. A plurality of sensing controllers are respectively provided on the drying machine shell, conveyor belt, discharge air-blocking mechanism, conveying mechanism, shelling mechanism, separation mechanism, hot air mechanism and loader in the circulating drying device. The control system monitors and controls the start and stop of the drying machine shell, conveyor belt, discharge air-blocking mechanism, conveying mechanism, shelling mechanism, separation mechanism, hot air mechanism and loader in real time by receiving signals from the sensing controllers. It monitors and detects the internal temperature of the drying machine shell, the transportation speed of the material on the conveyor belt, the discharge amount of the discharge air-blocking mechanism, the transportation speed of the conveying mechanism, the shelling efficiency of the shelling mechanism, the output of the separation mechanism, the air outlet of the hot air mechanism and the unloading amount of the loader, and coordinates the conveyor belt, discharge air-blocking mechanism, conveying mechanism, shelling mechanism, separation mechanism, hot air mechanism and loader.

Claims

1. A production method for circulating and drying shelled materials, characterized by: The following steps are involved: S1. The hot air mechanism is activated to deliver hot air to the sides and / or bottom of the dryer casing into the dryer casing. The amount of hot air delivered to the upper side of the dryer casing by the hot air mechanism is greater than the amount of hot air delivered to the lower side and / or bottom of the dryer casing by the hot air mechanism, so that the temperature of the upper end of the dryer casing is controlled at 65°C to 70°C and the temperature of the lower end of the dryer casing is controlled at 60°C to 65°C. The hot air mechanism recovers the cooled hot air from the top of the dryer casing, reheats it, and delivers the hot air to the bottom and / or sides of the dryer casing into the dryer casing, forming a hot air circulation to ensure a stable temperature inside the dryer casing. S2. The shelled material is placed into the conveyor belt at the upper end of the dryer shell from the feed port. The shelled material is heated in the area of ​​65 to 70 degrees at the upper end of the dryer shell. The material is transported by the conveyor belt to increase the time it stays in the dryer shell to ensure pre-treatment heating. The shell of the shelled material is heated to a cracked state and is transported by the conveyor belt to the discharge port and taken out of the dryer shell; S3, the shelled material leaving the drying shell is transported to the shelling mechanism by the conveying mechanism, and the shell of the shelled material is shelled and crushed; S4, after the shell is crushed, the shelled material is transported to the separation mechanism through the conveying mechanism, and the shell and the material are separated and screened; S5, the shelled material after separation is transported back to the conveyor belt at the lower end feed port of the drying shell in step S1 by the conveying mechanism, and the shelled material is dried and heated in the area of ​​60 degrees to 65 degrees at the lower end of the drying shell. The shelled material is transported by the conveyor belt to ensure the drying time in the drying shell. After the drying is completed, it is transported by the conveyor belt to the discharge port and taken out of the drying shell; S6. The shelled material leaving the drying machine shell is transported to the separation mechanism again along the conveying mechanism for secondary separation treatment to obtain the required finished product material.

2. A circulating drying device, characterized in that: The circulating drying device includes a drying machine shell, multiple conveyor belts, a discharge air-blocking mechanism, multiple conveying mechanisms, a shelling mechanism, a separation mechanism and a hot air mechanism. The multiple conveyor belts and the discharge air-blocking mechanism are arranged in the drying machine shell, the conveyor belts extend from one end inside the drying machine shell to the other end inside the drying machine shell, the shelling mechanism, the separation mechanism and the hot air mechanism are arranged outside the drying machine shell and are respectively connected to the drying machine shell, and conveying mechanisms are respectively arranged between the drying machine shell and the shelling mechanism, between the shelling mechanism and the separation mechanism, and between the separation mechanism and the drying machine shell. The material in the drying machine shell returns to the drying machine shell after passing through the shelling mechanism and the separation mechanism; The drying machine shell is provided with a feed port, a discharge port, an air inlet and a return air port. A conveyor belt is provided at the lower end of the feed port, the discharge port is provided below the conveying end of the conveyor belt, and the discharge air-blocking mechanism is provided on the discharge port. The feed inlet includes a first feed inlet and a second feed inlet, the first feed inlet is arranged at the top of the drying machine shell, and the second feed inlet is arranged on the side of the drying machine shell; The air inlet is arranged at the upper end of the side of the drying shell near the conveyor belt and the lower end of the side of the drying shell and / or at the bottom end of the drying shell, and the return air outlet is arranged at the upper end of the side of the drying shell and / or at the top of the drying shell; The hot air mechanism circulates drying hot air to the dryer shell and recovers the drying hot air. The hot air mechanism is respectively connected to the air inlet at the upper end of the side of the dryer shell near the conveyor belt and the air inlet and return air outlet at the lower end of the side of the dryer shell; The conveying mechanism includes a first conveying mechanism, a second conveying mechanism and a third conveying mechanism, wherein one end of the first conveying mechanism is arranged at the lower end of the discharge port, and the other end is connected to the feeding end of the shelling mechanism; One end of the second conveying mechanism is connected to the discharging end of the shelling mechanism, and the other end is connected to the feeding end of the separation mechanism; One end of the third conveying mechanism is connected to the discharge end of the separation mechanism, and the other end is connected to the second feed port.

3. The circulating drying device according to claim 2, characterized in that: A discharge trough is provided at the connection between the dryer shell and the discharge port, the discharge air-blocking mechanism is arranged in the discharge trough and rotates, the discharge port includes a first discharge port and a second discharge port, and the lower end of the first discharge port corresponds to the first conveying mechanism.

4. The circulating drying device according to claim 3, characterized in that: The discharging and air-blocking mechanism includes a discharging shaft movably connected to the discharging trough, a plurality of discharging plates connected to the discharging shaft, and a plurality of air-blocking plates connected to the discharging plates. One end of the discharging plate is fixedly connected to the discharging shaft, and the other end is bent inward; the air-blocking plate extends outward along the end of the discharging plate close to the discharging trough, so that when the discharging and air-blocking mechanism is not working, the hot air in the drying machine casing cannot overflow from the discharging port.

5. The circulating drying device according to claim 3, characterized in that: The conveyor belt includes a pretreatment conveyor belt and a drying conveyor belt. One end of the pretreatment conveyor belt is correspondingly arranged at the lower end of the first feed port, and the other end extends to the upper end of the first discharge port; one end of the drying conveyor belt is correspondingly arranged at the lower end of the second feed port, and the other end extends to the upper end of the second discharge port.

6. The circulating drying device according to claim 5, characterized in that: The pretreatment conveyor belt includes a first pretreatment conveyor belt and a second pretreatment conveyor belt, and a pretreatment guide plate is provided between the end of the first pretreatment conveyor belt and the end of the second pretreatment conveyor belt. One end of the first pretreatment conveyor belt is correspondingly arranged at the lower end of the first feed port, and the other end extends along the side end of the dryer shell close to the end inside the dryer shell. The end of the first pretreatment conveyor belt is close to the pretreatment guide plate, and the pretreatment guide plate is inclined facing the second pretreatment conveyor belt. One end of the second pretreatment conveyor belt is correspondingly arranged at the lower end of the pretreatment guide plate, and the other end extends along the side end of the dryer shell to the upper end of the first discharge port at the inner end of the dryer shell.

7. The circulating drying device according to claim 5, characterized in that: The drying conveyor belt includes a first drying conveyor belt and a second drying conveyor belt. A drying guide plate is provided between the end of the first drying conveyor belt and the end of the second drying conveyor belt. One end of the first drying conveyor belt is correspondingly arranged at the lower end of the second feeding port, and the other end extends along the side end of the dryer shell close to the end inside the dryer shell. The end of the first drying conveyor belt is close to the drying guide plate, and the drying guide plate is inclined facing the second drying conveyor belt. One end of the second drying conveyor belt is correspondingly arranged at the lower end of the drying guide plate, and the other end extends along the side end of the dryer shell to the upper end of the second discharging port at the inner end of the dryer shell.

8. The circulating drying device according to claim 2, characterized in that: The hot air mechanism includes a hot air device, an air supply device, and an air return device. The hot air device is used to provide hot air to the inside of the dryer shell. The hot air device is connected to the air supply device. The air supply device is used to pressurize the hot air generated by the hot air device and supply air. The air supply device is provided with an air supply duct connected to the air inlet on the dryer shell; the return air device is provided with a return air duct connected to the return air outlet on the dryer shell. The return air device is connected to the hot air device. The return air device is used to recover the hot air inside the dryer shell and transport it to the hot air device for reheating.

9. The circulating drying device according to claim 3, characterized in that: The conveying mechanism further includes a fourth conveying mechanism, one end of which is arranged at the lower end of the second discharge port on the drying machine shell, and the other end of which is connected to the feed end of the separation mechanism.

10. A production line for drying shelled materials, characterized by: The production line includes the circulating drying device described in any one of claims 2 to 9 above, and the production line also includes a loader connected to the feed port and a control system that simultaneously controls the circulating drying device and the loader. A plurality of sensing controllers are respectively provided on the drying machine shell, conveyor belt, discharging air-proof mechanism, conveying mechanism, shelling mechanism, separation mechanism, hot air mechanism and loader in the circulating drying device. The control system monitors and controls the start and stop of the drying machine shell, conveyor belt, discharging air-proof mechanism, conveying mechanism, shelling mechanism, separation mechanism, hot air mechanism and loader in real time by receiving the sensing controller signal, and monitors and detects the internal temperature of the drying machine shell, the transportation speed of the material on the conveyor belt, the discharge amount of the discharging air-proof mechanism, the transportation speed of the conveying mechanism, the shelling efficiency of the shelling mechanism, the output of the separation mechanism, the air outlet of the hot air mechanism and the unloading amount of the loader, and coordinates and controls the conveyor belt, discharging air-proof mechanism, conveying mechanism, shelling mechanism, separation mechanism, hot air mechanism and loader.

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