Freeze-drying peeling processing and screening equipment for torreya grandis seeds

Abstract

The utility model relates to the technical field of nut processing, in particular to torreya grandis seed freeze-drying peeling processing and screening equipment. The technical problems that in the process of removing the seed coats of the torreya grandis kernels, the torreya grandis kernels easily become soft through a boiling peeling method, pulp is easily corroded through an alkali liquor soaking peeling method, and the method that the torreya grandis kernels are fried firstly and then the seed coats of the torreya grandis kernels are removed through rapid operation of a device cannot avoid loss of nutritional ingredients in the torreya grandis kernels due to long-time high-temperature treatment. According to the technical scheme, the freeze-drying, peeling, processing and screening equipment for the torreya grandis seeds comprises a freezing assembly, a drying assembly, a peeling assembly and a screening assembly. According to the device, the freeze-drying system, the drying and peeling system and the screening system are arranged, the freeze-drying system is used for performing freeze-drying treatment on the torreya grandis kernels, the subsequent peeling procedure is facilitated, nutrition of the torreya grandis seeds is prevented from being lost due to high temperature, the drying and peeling system can effectively peel off seed coats of the freeze-dried torreya grandis kernels, and the screening efficiency is improved. And removing peeled seed coat fragments by using a screening system.

Description

Technical Field

[0001] The utility model relates to the technical field of nut processing, in particular to a freeze-drying, stripping, processing and screening device for Torreya grandis seeds. Background Art

[0002] The surface of Torreya grandis kernels is covered with a tightly wrapped black seed coat, which is rich in dietary fiber and can promote intestinal peristalsis, thereby improving gastrointestinal function, but the taste is relatively rough and bitter, which affects the quality and taste of Torreya grandis kernels. There are many methods to remove the seed coat of Torreya grandis kernels in traditional technology, mainly boiling, soaking, peeling, etc. However, each has its own disadvantages. For example, the longer the stewing time, the better the peeling effect of the boiling peeling method, but as the stewing time increases, the Torreya grandis kernels will become cottony and the texture will deteriorate, and some nutrients will also dissolve in the water, causing the loss of nutrients; such as the alkaline solution soaking peeling method, but the acid-base degree is difficult to accurately grasp. When the alkalinity is too strong, it will not only corrode the seed coat, but also corrode the pulp, causing the pulp quality loss. At the same time, the texture of the walnut kernel becomes soft and the color becomes white, affecting the taste of the final product, which is not conducive to subsequent processing and utilization; peeling the Torreya grandis kernel seed coat also needs to be directly torn off by hand after soaking, which will also cause some nutrients to dissolve in the water, causing the loss of nutrients. In order to avoid these shortcomings, the prior art also provides some technical solutions, such as first frying the Torreya grandis kernels and then removing the Torreya grandis kernel seed coat by rapid operation of the device. Although this method can remove the seed coat of Torreya grandis kernels, the Torreya grandis kernels will lose nutrients due to the continuous action of high temperature and high external force due to long-term high temperature treatment, which will also affect the appearance of the Torreya grandis kernels and subsequent storage. Utility Model Content

[0003] In order to overcome the problem that the boiling peeling method easily makes the Torreya nuts become cottony, and the alkali solution soaking peeling method easily corrodes the pulp, the method of first frying the Torreya nuts and then removing the Torreya nuts' seed coat through rapid operation of the device also cannot avoid the problem that the nutrients in the Torreya kernels are lost due to long-term high-temperature treatment.

[0004] The technical scheme of the utility model is: a freeze-drying, stripping, processing and screening equipment for Torreya grandis seeds, comprising a shell breaking component, a freezing component, a drying component, a stripping component and a screening component; a freezing component for freezing Torreya grandis seeds is arranged on one side of the shell breaking component; a drying component for drying Torreya grandis seeds is arranged at the lower end of the freezing component; a stripping component for peeling off the seed coat of Torreya grandis seeds is arranged at the lower end of the drying component; a screening component for classifying Torreya grandis kernels according to their size, weight or other quality indicators is arranged at the lower end of the stripping component.

[0005] Preferably, the shell breaking component is used to remove the shell of Torreya grandis seeds, the freezing component is used to quickly freeze the Torreya grandis seeds, the drying component is used to dry the Torreya grandis seeds, the stripping component is used to remove the seed coat of the Torreya grandis seeds, and the screening component is used to classify the Torreya grandis kernels according to their size, weight or other quality indicators.

[0006] Preferably, the shell breaking assembly includes an oscillator, a first vibrating screen, a shell discharge port, a seed discharge port, a first transmission device, and a first conveyor belt; the first vibrating screen is provided at the lower end of the oscillator; a shell discharge port is provided on one side of the first vibrating screen; a seed discharge port is provided on one side of the lower end of the shell discharge port; the first transmission device is provided at the lower end of the first vibrating screen; and the first conveyor belt is rotatably connected to the first transmission device. Torreya grandis is put into the oscillator to break the shell of Torreya grandis, and then the broken shell and Torreya grandis seeds fall on the first vibrating screen, the first vibrating screen separates the shell from Torreya grandis seeds, and makes Torreya grandis seeds fall on the first conveyor belt, and then the first transmission device rotates the first conveyor belt to throw the Torreya grandis seeds into the freezing chamber.

[0007] Preferably, the freezing assembly includes a first valve plate, a freezing chamber, a stirring motor, a spiral stirring shaft, a low-temperature airflow box, and a second valve plate; the first valve plate is provided at the lower end of one side of the first transmission device; the lower end of the first valve plate is fixedly connected to the freezing chamber; a stirring motor is installed in the freezing chamber through a fixed frame; the lower end of the stirring motor is rotatably connected to the spiral stirring shaft through a connecting shaft and a coupling; one side of the freezing chamber is connected to the low-temperature airflow box through a pipeline; the lower end of the freezing chamber is fixedly connected to the second valve plate. After the Chinese torreya seeds are thrown into the freezing chamber, the first valve plate is closed, and then the low-temperature gas is injected into the freezing chamber through the low-temperature airflow box, and the time and temperature of the low-temperature airflow box are selected before injecting the low-temperature gas. Subsequently, the stirring motor is started to stir the Chinese torreya seeds through the spiral stirring shaft so that the Chinese torreya seeds are frozen more evenly. After the freezing is completed, the second valve plate is opened to make the Chinese torreya seeds fall into the drying chamber, and then the second valve plate is closed. In the process of the Chinese torreya seeds being frozen, the density of water is greater than that of ice, and the seed coat will expand to a certain extent.

[0008] Preferably, the drying assembly includes a drying chamber, a microwave heater, a cold trap, a vacuum pump, and a third valve plate; the lower end of the second valve plate is fixedly connected to the drying chamber; the rear end of the cabin wall of the drying chamber is fixedly connected to the microwave heater; one side of the drying chamber is connected to the cold trap through a pipeline; a vacuum pump is provided at the rear end of the freezing chamber, and the vacuum pump is connected to the cold trap through a pipeline; the lower end of the drying chamber is fixedly connected to the third valve plate. The air pressure in the drying chamber is reduced by a vacuum pump, and the frozen Torreya grandis seeds are heated by a microwave heater. Under low-pressure conditions, the solid ice crystals on the surface of the Torreya grandis seeds will directly sublime into water vapor instead of melting into liquid. In this stage, the sublimated water vapor is captured by a cold trap to prevent it from re-condensing on the Torreya grandis seeds, and the Torreya grandis seeds are heated to a certain extent by a microwave heater to accelerate the direct sublimation of ice crystals and the drying speed of the Torreya grandis seeds. After the Torreya grandis seeds are dried, a large number of tiny holes and cracks will appear on the seed coat, and a gap will appear between the seed coat and the Torreya grandis kernel. After drying is completed, the microwave heater and vacuum pump are turned off, and the third valve plate is opened to allow the Torreya grandis seeds to fall onto the second conveyor belt installed on the second transmission device.

[0009] Preferably, the stripping assembly includes a bracket, a second transmission device, a third transmission device, a second conveyor belt, and a soft friction belt; the lower end of the third valve plate is fixedly connected to the bracket; the second transmission device is installed on the bracket; the upper end of the second transmission device is provided with a third transmission device installed on the bracket; the second transmission device and the third transmission device are both rotatably connected to the second conveyor belt; the front of the second conveyor belt is fixedly connected to the soft friction belt. The second transmission device rotates the second conveyor belt downward, and the third transmission device rotates the second conveyor belt upward, and the rotation speed of the second transmission device is faster than that of the third transmission device, so that when the Torreya grandis kernel moves downward between the two second conveyor belts, the seed coat of the Torreya grandis seed is rubbed off by the soft friction belt.

[0010] Preferably, the screening assembly includes a screen, a negative pressure cabin, a vacuum cleaner, a second vibrating screen, a first finished product discharge port, and a second discharge port; a screen mounted on a bracket is provided at the rear end of the second transmission device, and the size of the screen aperture is similar to that of soybeans; a negative pressure cabin opened at the rear end of the bracket is provided at the rear end of the screen; a vacuum cleaner connected to the negative pressure cabin through a pipeline is provided on one side of the negative pressure cabin. While the Torreya grandis seeds and seed coats fall from the rear end of the second conveyor belt, the vacuum cleaner sucks away the broken seed coats that fall on the screen through the negative pressure cabin, and the screen intercepts the Torreya grandis seeds and causes them to fall onto the second vibrating screen.

[0011] Preferably, a second vibrating screen is provided at the lower end of the screen; a first finished product discharge port is provided at the front end of the second vibrating screen; and a second discharge port is provided at the rear end of the second vibrating screen. The second vibrating screen screens the Torreya grandis kernels according to their size, weight or other quality indicators, and allows Torreya grandis kernels of different specifications to roll down from the first finished product discharge port and the second discharge port, respectively.

[0012] Beneficial effects of the utility model:

[0013] 1. By setting up a freeze-drying system, a drying and stripping system and a screening system, the freeze-drying system is used to freeze-dry the Torreya grandis kernels, which is convenient for the subsequent stripping process and avoids the loss of nutrients of Torreya grandis seeds due to high temperature. The drying and stripping system adopts a special mechanical structure, which can effectively strip the seed coat of the freeze-dried Torreya grandis kernels, and the screening system is used to remove the peeled seed coat fragments to ensure the purity of the final product;

[0014] 2. Put the Chinese torreya nuts into the oscillator to break the shell of the Chinese torreya nuts, and then the broken shell and Chinese torreya seeds fall onto the first vibrating screen. The first vibrating screen separates the shell from the Chinese torreya seeds and makes the Chinese torreya seeds fall onto the first conveyor belt. Then the first transmission device rotates the first conveyor belt to drop the Chinese torreya seeds into the freezing chamber. After the Chinese torreya seeds are dropped into the freezing chamber, the first valve plate is closed, and then low-temperature gas is injected into the freezing chamber through the low-temperature air flow box. Before injecting the low-temperature gas, the time and temperature of the low-temperature air flow box are selected. Then, the stirring motor is started to stir the Chinese torreya seeds through the spiral stirring shaft so that the Chinese torreya seeds are frozen more evenly. After freezing, the second valve plate is opened to make the Chinese torreya seeds fall into the drying chamber, and then the second valve plate is closed. In the process of freezing the Chinese torreya seeds, since the density of water is greater than that of ice, the seed coat will expand to a certain extent. This not only facilitates feeding, but also avoids the loss of nutrients in the Chinese torreya seeds due to high temperature during processing;

[0015] 3. Use a vacuum pump to reduce the air pressure in the drying chamber, and use a microwave heater to heat the frozen Torreya grandis seeds. Under low pressure, the solid ice crystals on the surface of Torreya grandis seeds will directly sublime into water vapor instead of melting into liquid. In this stage, the sublimated water vapor is captured by a cold trap to prevent it from re-condensing on the Torreya grandis seeds, and the Torreya grandis seeds are heated to a certain extent by a microwave heater to speed up the direct sublimation of ice crystals and the drying of Torreya grandis seeds. After the Torreya grandis seeds are dried, a large number of tiny holes and cracks will appear on the seed coat. And there will be a gap between the seed coat and the Torreya grandis kernel. After drying is completed, the microwave heater and the vacuum pump are turned off, and the third valve plate is opened, so that the Torreya grandis seeds fall onto the second conveyor belt installed on the second transmission device. The second transmission device rotates the second conveyor belt downward, and the third transmission device rotates the second conveyor belt upward. The rotation speed of the second transmission device is faster than that of the third transmission device. When the Torreya grandis kernel moves downward between the two second conveyor belts, the seed coat of the Torreya grandis seeds is rubbed off by the soft friction belt, thereby effectively peeling off the seed coat of the freeze-dried Torreya grandis kernel.

[0016] 4. While the seeds and seed coats of Torreya grandis fall from the rear end of the second conveyor belt, the vacuum cleaner sucks away the broken seed coats that fall on the screen through the negative pressure cabin, and the screen intercepts the seeds of Torreya grandis and makes them fall on the second vibrating screen. The second vibrating screen screens the Torreya grandis kernels according to their size, weight or other quality indicators, and makes Torreya grandis kernels of different specifications roll down from the first finished product discharge port and the second discharge port respectively, thereby efficiently removing the peeled seed coat fragments, ensuring the purity of the final product, and facilitating the classification of the quality of Torreya grandis kernels. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 What is shown is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 What is shown is a schematic diagram of the first vibrating screen structure of the utility model;

[0019] Figure 3 The first transmission structure schematic diagram of the present utility model is shown;

[0020] Figure 4 What is shown is a schematic diagram of the structure of the spiral stirring shaft of the utility model;

[0021] Figure 5 What is shown is a schematic diagram of the cold trap structure of the utility model;

[0022] Figure 6 What is shown is a schematic diagram of the screen structure of the utility model;

[0023] Figure 7 The schematic diagram of the second vibrating screen structure of the utility model is shown;

[0024] Figure 8 What is shown is a schematic diagram of the structure of the vacuum cleaner of the present utility model;.

[0025] Description of reference numerals: 1, shell breaking assembly; 2, freezing assembly; 3, drying assembly; 4, stripping assembly; 5, screening assembly; 101, oscillator; 102, first vibrating screen; 103, shell discharge port; 104, seed discharge port; 105, first transmission device; 106, first conveyor belt; 201, first valve plate; 202, freezing chamber; 203, stirring motor; 204, spiral stirring shaft; 205, low-temperature air flow box; 206, The second valve plate; 301, drying chamber; 302, microwave heater; 303, cold trap; 304, vacuum pump; 305, third valve plate; 401, bracket; 402, second transmission device; 403, third transmission device; 404, second conveyor belt; 405, soft friction belt; 501, screen; 502, negative pressure chamber; 503, vacuum cleaner; 504, second vibrating screen; 505, first finished product discharge port; 506, second discharge port. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] See also Figure 1-4The utility model provides an embodiment: a freeze-drying, stripping and screening equipment for Torreya grandis seeds, comprising a shell breaking component 1, a freezing component 2, a drying component 3, a stripping component 4 and a screening component 5; a freezing component 2 for freezing Torreya grandis seeds is arranged on one side of the shell breaking component 1; a drying component 3 for drying Torreya grandis seeds is arranged at the lower end of the freezing component 2; a stripping component 4 for stripping Torreya grandis seeds seed coat is arranged at the lower end of the drying component 3; a screening component 5 for classifying Torreya grandis kernels according to their size, weight or other quality indicators is arranged at the lower end of the stripping component 4. The shell breaking component 1 is used to remove the shell of Torreya grandis seeds, the freezing component 2 is used to quickly freeze Torreya grandis seeds, the drying component 3 is used to dry Torreya grandis seeds, the stripping component 4 is used to remove the seed coat of Torreya grandis seeds, and the screening component 5 is used to classify Torreya grandis kernels according to their size, weight or other quality indicators. The shell breaking assembly 1 includes an oscillator 101, a first vibrating screen 102, a shell discharge port 103, a seed discharge port 104, a first transmission device 105, and a first conveyor belt 106; the first vibrating screen 102 is provided at the lower end of the oscillator 101; a shell discharge port 103 is provided on one side of the first vibrating screen 102; a seed discharge port 104 is provided on one side of the lower end of the shell discharge port 103; a first transmission device 105 is provided at the lower end of the first vibrating screen 102; and a first conveyor belt 106 is rotatably connected to the first transmission device 105. Torreya grandis is put into the oscillator 101 to break the shell of Torreya grandis, and then the broken shell and Torreya grandis seeds fall on the first vibrating screen 102, the first vibrating screen 102 separates the shell from Torreya grandis seeds, and makes Torreya grandis seeds fall on the first conveyor belt 106, and then the first transmission device 105 rotates the first conveyor belt 106 to throw the Torreya grandis seeds into the freezing chamber 202. The refrigeration assembly 2 includes a first valve plate 201, a refrigeration chamber 202, a stirring motor 203, a spiral stirring shaft 204, a low-temperature airflow box 205, and a second valve plate 206; the first valve plate 201 is arranged at the lower end of one side of the first transmission device 105; the lower end of the first valve plate 201 is fixedly connected to the refrigeration chamber 202; the stirring motor 203 is installed in the refrigeration chamber 202 through a fixed frame; the lower end of the stirring motor 203 is rotatably connected to the spiral stirring shaft 204 through a connecting shaft and a coupling; one side of the refrigeration chamber 202 is connected to the low-temperature airflow box 205 through a pipeline; the lower end of the refrigeration chamber 202 is fixedly connected to the second valve plate 206. After the Torreya grandis seeds are thrown into the freezing chamber 202, the first valve plate 201 is closed, and then low-temperature gas is injected into the freezing chamber 202 through the low-temperature gas flow box 205, and the time and temperature of the low-temperature gas flow box 205 for injecting gas are selected before injecting the low-temperature gas. Subsequently, the stirring motor 203 is started to stir the Torreya grandis seeds through the spiral stirring shaft 204 so that the Torreya grandis seeds are frozen more evenly. After the freezing is completed, the second valve plate 206 is opened to allow the Torreya grandis seeds to fall into the drying chamber 301, and then the second valve plate 206 is closed. In the process of freezing the Torreya grandis seeds, since the density of water is greater than that of ice, the seed coat will expand to a certain extent.

[0028] See also Figure 5-8In this embodiment, the drying component 3 includes a drying chamber 301, a microwave heater 302, a cold trap 303, a vacuum pump 304, and a third valve plate 305; the lower end of the second valve plate 206 is fixedly connected to the drying chamber 301; the rear end of the cabin wall of the drying chamber 301 is fixedly connected to the microwave heater 302; one side of the drying chamber 301 is connected to the cold trap 303 through a pipeline; the rear end of the freezing chamber 202 is provided with a vacuum pump 304, and the vacuum pump 304 is connected to the cold trap 303 through a pipeline; the lower end of the drying chamber 301 is fixedly connected to the third valve plate 305. The air pressure in the drying chamber 301 is reduced by the vacuum pump 304, and the frozen Torreya grandis seeds are heated by the microwave heater 302. Under the low-pressure environment, the solid ice crystals on the surface of the Torreya grandis seeds will directly sublime into water vapor instead of melting into liquid. In this stage, the sublimated water vapor is captured by the cold trap 303 to prevent it from re-condensing on the Torreya grandis seeds, and the Torreya grandis seeds are heated to a certain extent by the microwave heater 302 to accelerate the direct sublimation of ice crystals and the drying speed of the Torreya grandis seeds. After the Torreya grandis seeds are dried, a large number of tiny holes and cracks will appear on the seed coat, and a gap will appear between the seed coat and the Torreya grandis kernel. After drying is completed, the microwave heater 302 and the vacuum pump 304 are turned off, and the third valve plate 305 is opened to make the Torreya grandis seeds fall onto the second conveyor belt 404 installed on the second transmission device 402. The stripping assembly 4 includes a bracket 401, a second transmission device 402, a third transmission device 403, a second conveyor belt 404, and a soft friction belt 405; the bracket 401 is fixedly connected to the lower end of the third valve plate 305; the second transmission device 402 is installed on the bracket 401; the third transmission device 403 installed on the bracket 401 is arranged on the upper end of the second transmission device 402; the second conveyor belt 404 is rotatably connected to the second transmission device 402 and the third transmission device 403; the front of the second conveyor belt 404 is fixedly connected with the soft friction belt 405. The second transmission device 402 rotates the second conveyor belt 404 downward, and the third transmission device 403 rotates the second conveyor belt 404 upward, and the rotation speed of the second transmission device 402 is faster than that of the third transmission device 403, so that when the Torreya grandis kernel moves downward between the two second conveyor belts 404, the seed coat of the Torreya grandis seed is rubbed off by the soft friction belt 405. The screening assembly 5 includes a screen 501, a negative pressure cabin 502, a vacuum cleaner 503, a second vibrating screen 504, a first finished product discharge port 505, and a second discharge port 506; the rear end of the second transmission device 402 is provided with a screen 501 mounted on the bracket 401, and the aperture of the screen 501 is similar to that of soybeans; the rear end of the screen 501 is provided with a negative pressure cabin 502 opened at the rear end of the bracket 401; one side of the negative pressure cabin 502 is provided with a vacuum cleaner 503 connected to the negative pressure cabin 502 through a pipeline. When the Torreya grandis seeds and seed coats fall from the rear end of the second conveyor belt 404, the vacuum cleaner 503 sucks away the broken seed coats falling on the screen 501 through the negative pressure cabin 502, and the screen 501 intercepts the Torreya grandis seeds and makes the Torreya grandis seeds fall on the second vibrating screen 504.A second vibrating screen 504 is provided at the lower end of the screen 501; a first finished product discharge port 505 is provided at the front end of the second vibrating screen 504; and a second discharge port 506 is provided at the rear end of the second vibrating screen 504. The second vibrating screen 504 screens the Torreya grandis kernels according to their size, weight or other quality indicators, and allows Torreya grandis kernels of different specifications to roll down from the first finished product discharge port 505 and the second discharge port 506, respectively.

[0029] During operation, Torreya grandis is put into the vibrator 101 to break the shell of Torreya grandis, and then the broken shell and Torreya grandis seeds fall onto the first vibrating screen 102. The first vibrating screen 102 separates the shell from Torreya grandis seeds and makes Torreya grandis seeds fall onto the first conveyor belt 106. Then the first transmission device 105 rotates the first conveyor belt 106 to drop Torreya grandis seeds into the freezing chamber 202. After Torreya grandis seeds are dropped into the freezing chamber 202, the first valve plate 201 is closed, and then the Torreya grandis seeds are sent to the cold chamber 202 through the low-temperature air flow box 205. Inject low-temperature gas into the freezing chamber 202, and select the time and temperature for the low-temperature gas flow box 205 to release gas before injecting low-temperature gas. Then, start the stirring motor 203 to stir the Torreya grandis seeds through the spiral stirring shaft 204 so that the Torreya grandis seeds are frozen more evenly. After freezing, open the second valve plate 206 to let the Torreya grandis seeds fall into the drying chamber 301, and then close the second valve plate 206. During the freezing process of Torreya grandis seeds, the density of water is greater than that of ice, and the seed coat will expand to a certain extent. This not only facilitates feeding, but also avoids the loss of nutrients in Torreya grandis seeds due to high temperature during processing;

[0030] The air pressure in the drying chamber 301 is reduced by a vacuum pump 304, and the frozen Torreya grandis seeds are heated by a microwave heater 302. In a low-pressure environment, the solid ice crystals on the surface of the Torreya grandis seeds will directly sublime into water vapor instead of melting into liquid. In this stage, the sublimated water vapor is captured by a cold trap 303 to prevent it from re-condensing on the Torreya grandis seeds, and the Torreya grandis seeds are heated to a certain extent by the microwave heater 302 to accelerate the direct sublimation of ice crystals and the drying speed of the Torreya grandis seeds. After the Torreya grandis seeds are dried, a large number of tiny holes and cracks will appear on the seed coat. And there will be a gap between the seed coat and the Torreya grandis kernel. After drying is completed, the microwave heater 302 and the vacuum pump 304 are turned off, and the third valve plate 305 is opened, so that the Torreya grandis seeds fall onto the second conveyor belt 404 installed on the second transmission device 402. The second transmission device 402 rotates the second conveyor belt 404 downward, and the third transmission device 403 rotates the second conveyor belt 404 upward. The rotation speed of the second transmission device 402 is faster than that of the third transmission device 403. When the Torreya grandis kernel moves downward between the two second conveyor belts 404, the seed coat of the Torreya grandis seeds is rubbed off by the soft friction belt 405, thereby effectively peeling off the seed coat of the freeze-dried Torreya grandis kernel.

[0031] While the Torreya grandis seeds and seed coats fall from the rear end of the second conveyor belt 404, the vacuum cleaner 503 sucks away the broken seed coats that fall on the screen 501 through the negative pressure chamber 502, and the screen 501 intercepts the Torreya grandis seeds and makes them fall on the second vibrating screen 504. The second vibrating screen 504 screens the Torreya grandis kernels according to their size, weight or other quality indicators, and makes Torreya grandis kernels of different specifications roll down from the first finished product discharge port 505 and the second discharge port 506 respectively, thereby efficiently removing the peeled seed coat fragments, ensuring the purity of the final product, and facilitating the classification of the Torreya grandis kernel quality.

[0032] Through the above steps, a freeze-drying system, a drying and stripping system and a screening system are set up, and the freeze-drying system is used to freeze-dry the Torreya grandis kernels, which is convenient for the subsequent stripping process and avoids the loss of nutrients in the Torreya grandis seeds due to high temperature. The drying and stripping system adopts a special mechanical structure, which can effectively strip the seed coat of the freeze-dried Torreya grandis kernels, and the screening system is used to remove the peeled seed coat fragments to ensure the purity of the final product.

[0033] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A freeze-drying, peeling, processing and screening device for Torreya grandis seeds, comprising a shell breaking component (1); characterized in that: The invention also comprises a freezing component (2), a drying component (3), a stripping component (4), and a screening component (5); a freezing component (2) for freezing Torreya grandis seeds is arranged on one side of the shell breaking component (1); a drying component (3) for drying Torreya grandis seeds is arranged at the lower end of the freezing component (2); a stripping component (4) for stripping Torreya grandis seed coats is arranged at the lower end of the drying component (3); and a screening component (5) for classifying Torreya grandis kernels according to their size and weight is arranged at the lower end of the stripping component (4).

2. The freeze-drying, undressing, processing and screening equipment for Torreya grandis seeds according to claim 1, characterized in that: The shell breaking assembly (1) comprises an oscillator (101), a first vibrating screen (102), a shell discharge port (103), a seed discharge port (104), a first transmission device (105), and a first conveyor belt (106); the first vibrating screen (102) is arranged at the lower end of the oscillator (101); a shell discharge port (103) is arranged on one side of the first vibrating screen (102); a seed discharge port (104) is arranged on one side of the lower end of the shell discharge port (103); a first transmission device (105) is arranged at the lower end of the first vibrating screen (102); and a first conveyor belt (106) is rotatably connected to the first transmission device (105).

3. The freeze-drying, undressing, processing and screening equipment for Torreya grandis seeds according to claim 2, characterized in that: The freezing assembly (2) comprises a first valve plate (201), a freezing chamber (202), a stirring motor (203), a spiral stirring shaft (204), a low-temperature airflow box (205), and a second valve plate (206); the first valve plate (201) is arranged at the lower end of one side of the first transmission device (105); the lower end of the first valve plate (201) is fixedly connected to the freezing chamber (202); the stirring motor (203) is installed in the freezing chamber (202) via a fixing frame; the lower end of the stirring motor (203) is rotatably connected to the spiral stirring shaft (204) via a connecting shaft and a coupling; one side of the freezing chamber (202) is connected to the low-temperature airflow box (205) via a pipeline; and the lower end of the freezing chamber (202) is fixedly connected to the second valve plate (206).

4. The freeze-drying, undressing, processing and screening equipment for Torreya grandis seeds according to claim 3, characterized in that: The drying assembly (3) comprises a drying chamber (301), a microwave heater (302), a cold trap (303), a vacuum pump (304), and a third valve plate (305); the drying chamber (301) is fixedly connected to the lower end of the second valve plate (206); the microwave heater (302) is fixedly connected to the rear end of the bulkhead of the drying chamber (301); one side of the drying chamber (301) is connected to the cold trap (303) via a pipeline; the rear end of the freezing chamber (202) is provided with a vacuum pump (304), and the vacuum pump (304) is connected to the cold trap (303) via a pipeline; and the lower end of the drying chamber (301) is fixedly connected to the third valve plate (305).

5. The freeze-drying, undressing, processing and screening equipment for Torreya grandis seeds according to claim 4, characterized in that: The undressing assembly (4) comprises a bracket (401), a second transmission device (402), a third transmission device (403), a second conveyor belt (404), and a soft friction belt (405); the lower end of the third valve plate (305) is fixedly connected to the bracket (401); the second transmission device (402) is mounted on the bracket (401); the upper end of the second transmission device (402) is provided with a third transmission device (403) mounted on the bracket (401); the second transmission device (402) and the third transmission device (403) are both rotatably connected to the second conveyor belt (404); and the front side of the second conveyor belt (404) is fixedly connected to the soft friction belt (405).

6. The freeze-drying, stripping, processing and screening equipment for Torreya grandis seeds according to claim 5, characterized in that: The screening assembly (5) comprises a screen (501), a negative pressure chamber (502), a vacuum cleaner (503), a second vibrating screen (504), a first finished product discharge port (505), and a second discharge port (506); a screen (501) mounted on a bracket (401) is arranged at the rear end of the second transmission device (402), and the aperture of the screen (501) is similar to that of soybeans; a negative pressure chamber (502) opened at the rear end of the bracket (401) is arranged at the rear end of the screen (501); and a vacuum cleaner (503) connected to the negative pressure chamber (502) through a pipeline is arranged on one side of the negative pressure chamber (502).

7. The freeze-drying, undressing, processing and screening equipment for Torreya grandis seeds according to claim 5, characterized in that: A second vibrating screen (504) is provided at the lower end of the screen (501); a first finished product discharge port (505) is provided at the front end of the second vibrating screen (504); and a second discharge port (506) is provided at the rear end of the second vibrating screen (504).

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