Seed kernel low-temperature steam sterilization device and sterilization process thereof

Abstract

The invention relates to the technical field of seed kernel processing, and discloses a seed kernel low-temperature steam sterilization device and a sterilization process thereof.The seed kernel low-temperature steam sterilization device comprises a roller mechanism which comprises a rotary outer roller, an inner roller and an intermediate shaft coaxial with the outer roller and the inner roller and is used for driving seed kernels in the outer roller to rotate through self rotation for sterilization, and the adhered seed kernels are moved into the inner roller for rotary sterilization. According to the low-temperature steam sterilization device for the seed kernels and the sterilization process of the low-temperature steam sterilization device, through cooperation of the elastic soft sleeve, the rotary baffle and the elastic piece of the hardness adjusting plate, self-adaptive adjustment of the hardness of the end is achieved, slightly-adhered seed kernels can be gently scattered, heavily-adhered seeds can be efficiently scattered by improving the hardness, meanwhile, damage to single seed kernels is avoided, and the sterilization efficiency is improved. Therefore, the defects that the inner-layer seed kernels are difficult to reach the sterilization threshold value and the sterilization effect of the same batch is inconsistent due to the fact that the adhered seeds block steam permeation in the prior art are overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of kernel processing, and specifically to a low-temperature steam sterilization device for kernels and its sterilization process. Background Art

[0002] A low-temperature steam sterilization device for kernels is a device used for kernel sterilization. It precisely controls the temperature of kernels through multiple temperature control areas, can effectively kill microorganisms at a relatively low temperature, and at the same time reduce the impact on the nutritional components and flavors of kernels.

[0003] However, in the prior art, it is generally transported by a mesh belt. When the kernels are sterilized with steam, they will directly contact the steam. The moisture contained in the steam will activate the polysaccharides on the surface of the kernels, resulting in the kernels sticking to each other. If the kernels cannot be dried in time, the stuck kernels will become soft, which not only affects the taste but may also accelerate mildew during subsequent storage. Moreover, the stuck kernels and the kernels in the upper layer will block the penetration of the outer steam, making it difficult for the inner kernels to quickly reach the sterilization threshold, resulting in inconsistent sterilization effects for the kernels in the same batch and reducing the quality of the finished product. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a low-temperature steam sterilization device for kernels and its sterilization process, which solves the problems of kernels sticking to each other caused by steam and uneven sterilization due to the difficulty of steam penetrating into the inner layer of kernels as mentioned in the above background art.

[0005] To achieve the above purposes, the present invention is realized through the following technical solutions: A low-temperature steam sterilization device for kernels and its sterilization process, including: A drum mechanism, including a rotating outer drum, an inner drum, and an intermediate shaft coaxial with the outer drum and the inner drum, for driving the kernels inside the outer drum to rotate for sterilization through its own rotation, and moving the stuck kernels into the inner drum for rotating sterilization; A number of hardness adjustment plates, all fixedly connected to the outside of the intermediate shaft, including stirring plates, soft sleeves arranged at one end of the stirring plates far from the intermediate shaft, and rotating baffles obliquely arranged inside the stirring plates and the soft sleeves. The hardness adjustment plates are used to change the hardness of the end through the bending degree of the soft sleeves and stir the stuck and broken kernels entering the inner drum.

[0006] Preferably, it further includes: A device main body, which is set as a channel structure with both ends open and a cross-section in the shape of a "mouth"; Two sealing doors, respectively arranged at both ends of the device main body, for sealing both ends of the device main body; Two power motors are respectively installed on both sides of the main body of the device and fixedly connected to the main body of the device. The output end is connected to the sealing door thread on the same side to drive the corresponding power motor to move. Several telescopic rods are fixedly connected to the top of the main body of the device; Several sealing partitions are located in the same vertical plane as the corresponding telescopic rods, and are located inside the main body of the device and slidably connected to the main body of the device, for forming a sealed sterilization chamber inside the main body of the device by moving on their own.

[0007] Preferably, the main body of the device is provided with an independent sterilization mechanism and a monitor that are fixedly connected to its own inner wall between each adjacent sealing partition.

[0008] Preferably, the roller mechanism further includes: A drive motor is located on the outside of the device body and is fixedly connected to the device body. The driven block is disposed inside the main body of the device and is slidably connected to the main body of the device and threadedly connected to the output end of the drive motor. It is driven by the drive motor to move horizontally within the main body of the device. A rotary motor is installed inside the driven block, and its output end is fixedly connected to the outer roller, for driving the outer roller and the intermediate shaft to rotate; A closed door is formed on the side wall of the intermediate axis; A limiting slider, with a rectangular cross-section, is fixedly connected to the inner roller and slidably connected to the main body of the device, and is used to limit the state of the inner roller; A steam generator is fixed to the side wall of the outer drum, and its output end extends into the inner drum to replenish the low-temperature steam in the inner drum.

[0009] Preferably, both the outer roller and the inner roller have several holes that penetrate the sidewalls for passing low-temperature steam.

[0010] Preferably, the top of the inner roller has a notch of the same length as the inner roller.

[0011] Preferably, the hardness adjustment plate further includes: A fixing plate is disposed inside the stirring plate and the soft sleeve, and is fixedly connected to the stirring plate; A fixed shaft is disposed inside the agitator and the soft sleeve and is fixedly connected to the agitator, serving as the rotation shaft of the rotating baffle; Several elastic components are respectively disposed between the fixed plate and the rotating baffle, with one end fixedly connected to the fixed plate and the other end fixedly connected to the rotating baffle.

[0012] Preferably, the soft sleeve is made of an elastic material.

[0013] Preferably, the rotating baffle forms an acute angle with the rotation direction of the stirring plate and the soft sleeve.

[0014] A multi-stage, precisely temperature-controlled, low-temperature steam sterilization process for kernels includes the following steps: a. When the two motors are working, they drive the two sealing doors at both ends of the main body of the device to move away from the main body of the device. The main body of the device opens, and then the closed doors are opened. The kernels to be sterilized by low-temperature steam are placed between the outer roller and the inner roller. When the motors are working, the sealing doors reseal the main body of the device. b. When the drive motor is working, it drives the roller mechanism to move inside the main body of the device. Whenever the roller mechanism moves to a certain area inside the main body of the device, the corresponding telescopic rod works, driving the corresponding sealing partition to enter the main body of the device. It works in conjunction with the inner wall of the main body of the device to seal the roller mechanism. The independent sterilization mechanism and monitor in this area work to sterilize the kernels inside the roller mechanism and monitor environmental parameters. c. During this period, the rotary motor drives the outer drum to rotate. Due to mutual adhesion, the heavier grains fall into the inner drum through the notch at the top of the inner drum under the action of gravity, and are gradually dispersed by being hit by several of the aforementioned hardness adjustment plates. d. After being sterilized in multiple sterilization chambers, the roller mechanism moves to the other end of the main body of the device, opens the sealed door on this side, and removes the sterilized kernels through the inner roller, the notch, and the closed door.

[0015] The low-temperature steam sterilization device and sterilization process for kernels provided by this invention have the following beneficial effects: 1. The low-temperature steam sterilization device for kernels and its sterilization process, by setting up a double-layer structure of an outer roller and an inner roller, combined with the notch at the top of the inner roller and the rotation of the roller driven by a rotary motor, allows the kernels that are sticky and heavy to fall into the inner roller under the action of gravity, and then be broken up by the hardness adjustment plate. This solves the defect in the prior art that the kernels stick together due to the activation of surface polysaccharides by steam moisture, which affects the taste and is prone to accelerated mold growth.

[0016] 2. The low-temperature steam sterilization device for kernels and its sterilization process achieve adaptive adjustment of end hardness through the cooperation of the elastic soft sleeve of the hardness adjustment plate, the rotating baffle and the elastic component. It can gently break up slightly sticky kernels and efficiently break up heavily sticky kernels by increasing the hardness, while avoiding damage to individual kernels. This solves the defects of the prior art, where sticky kernels block steam penetration, making it difficult for the inner kernels to reach the sterilization threshold and the sterilization effect of the same batch is inconsistent.

[0017] 3. The low-temperature steam sterilization device for kernels and its sterilization process form multiple independent sterilization chambers by cooperating with several sealed partitions and telescopic rods in the main body of the device. Each sterilization chamber is equipped with an independent sterilization mechanism and monitor, and different temperature parameters can be set to achieve multi-level precise temperature control. At the same time, the opening design of the outer and inner rollers and the supplementary function of the inner roller steamer ensure that the low-temperature steam penetrates fully, thereby solving the defects of the existing technology that cannot accurately control the temperature and have uneven steam penetration, resulting in poor sterilization effect of kernels or damage to nutrients and flavor. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first overall structure of the present invention; Figure 2 This is a schematic diagram of the second overall structure of the present invention; Figure 3 This is a schematic diagram of the first cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the second cross-sectional structure of the present invention; Figure 5 This is a schematic diagram of the third cross-sectional structure of the present invention; Figure 6 This is a schematic diagram of the overall structure of the roller mechanism of the present invention; Figure 7 This is a schematic diagram of the first cross-sectional structure of the roller mechanism of the present invention; Figure 8 This is a schematic diagram of the second cross-sectional structure of the roller mechanism of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the hardness adjustment plate of the present invention; Figure 10 This is a schematic diagram of the overall structure of the stirring plate of the present invention.

[0019] In the diagram: 10. Main body of the device; 11. Sealing door; 12. Power motor; 13. Telescopic rod; 14. Sealing partition; Roller mechanism: 20. Drive motor; 21. Driven block; 22. Rotary motor; 23. Outer roller; 24. Closing door; 25. Intermediate shaft; 26. Inner roller; 27. Limiting slider; 28. Steam generator; Hardness adjustment plate: 30, stirring plate; 31, soft sleeve; 32, fixing plate; 33, fixing shaft; 34, rotating baffle; 35, elastic element. Detailed Implementation

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0021] Reference Figures 1 to 10 , a low-temperature steam sterilization device for seeds and its sterilization process according to a preferred embodiment of the present invention will be elaborated in detail below, including: A drum mechanism, including a rotating outer drum 23, an inner drum 26, and an intermediate shaft 25 coaxial with the outer drum 23 and the inner drum 26, which is used to drive the rotation of the seeds inside the outer drum 23 through its own rotation for sterilization, and move the adhered seeds into the inner drum 26 for rotational sterilization. The outer drum 23 is used for low-temperature steam sterilization treatment of the non-adhered seeds, while the inner drum 26 performs low-temperature steam sterilization treatment on the adhered seeds, so as to perform low-temperature steam sterilization on the non-adhered seeds and the adhered seeds respectively, avoiding the problems of incomplete sterilization of the adhered seeds and excessive sterilization of the non-adhered seeds, resulting in nutrient loss and quality decline.

[0022] A number of hardness adjustment plates, all fixedly connected to the outside of the intermediate shaft 25, including stirring plates 30, soft sleeves 31 arranged at one end of the stirring plates 30 away from the intermediate shaft 25, and rotating baffles 34 inclined inside the stirring plates 30 and the soft sleeves 31. The hardness adjustment plates are used to change the hardness of the end through the bending degree of the soft sleeves 31, and stir the adhered and broken seeds entering the inner drum 26. The soft sleeve 31 is made of an elastic material, and its bending degree can be adaptively adjusted according to the weight of the adhered seeds, so as to avoid the problem of breakage of individual seeds in the adhered seeds and inability to be dispersed due to its own hardness. And when it is bent to a certain extent, that is, when the weight of the adhered seeds is large and the elastic soft sleeve 31 cannot completely disperse them, a certain supporting force is applied to the soft sleeve 31 through the rotating baffle 34, so as to improve the effect of dispersing the adhered seeds and enhance the uniformity of subsequent sterilization.

[0023] It further includes: A device main body 10, which is set as a channel structure with both ends open and a cross-section in the shape of a "mouth", so as to facilitate the feeding and discharging of seeds while the drum mechanism moves from one end of the device main body 10 to the other end, and by setting sealing doors 11 at both ends of the device main body 10, the sealing performance of the internal space of the device main body 10 can also be ensured, reducing the leakage of low-temperature steam.

[0024] Two sealing doors 11 are respectively installed at both ends of the main body 10 of the device, and are used to seal both ends of the main body 10 of the device; Two power motors 12 are respectively set on both sides of the main body 10 and fixedly connected to the main body 10. The output end is threadedly connected to the sealing door 11 on the same side. Utilizing the precise and stable characteristics of the threaded transmission belt, the opening and closing position of the sealing door 11 is ensured to be accurate while driving the corresponding power motor 12 to move. Several telescopic rods 13 are fixedly connected to the top of the main body 10 of the device. Through the independent operation of the telescopic rods 13, the different sealing partitions 14 can be moved precisely, and the multiple independent sterilization chambers can be flexibly switched.

[0025] Several sealing partitions 14 are located in the same vertical plane as the corresponding telescopic rods 13, and are located inside the main body 10 of the device and are slidably connected to the main body 10 of the device. They are used to form a sealed sterilization chamber inside the main body 10 by moving on their own. Each sterilization chamber can be set with different temperature parameters to achieve multi-level precise temperature control and sterilization.

[0026] The main body 10 of the device is equipped with an independent sterilization mechanism and a monitor that are fixedly connected to its inner wall between each adjacent sealed partition 14, so as to ensure that each sterilization chamber can provide a precise low-temperature steam supply according to the sterilization requirements of the kernels. The monitor collects environmental parameters such as temperature and humidity in the chamber in real time, providing data support for the adjustment of the sterilization process, thereby performing precise multi-level temperature-controlled low-temperature steam sterilization of the kernels.

[0027] The roller mechanism also includes: The drive motor 20 is located on the outside of the device body 10 and is fixedly connected to the device body 10. It is used to drive the entire roller mechanism to move horizontally inside the device body 10 through a threaded connection with the driven block 21.

[0028] The driven block 21 is located inside the device body 10 and is slidably connected to the device body 10 and threadedly connected to the output end of the drive motor 20. It is driven by the drive motor 20 to move horizontally within the device body 10. A rotary motor 22 is installed inside the driven block 21, and its output end is fixedly connected to the outer roller 23, which is used to drive the outer roller 23 and the intermediate shaft 25 to rotate. The closing door 24 is located on the side wall of the intermediate shaft 25. The closing door 24 serves as the inlet and outlet of the kernels. Its position matches the notch of the inner roller 26. When feeding, the kernels are prevented from falling directly into the inner roller 26. When discharging, it is convenient to remove the kernels from the outer roller 23 and the inner roller 26 at the same time.

[0029] The limiting slider 27, with a rectangular cross-section, is fixedly connected to the inner roller 26 and slidably connected to the main body 10 of the device. It is used to limit the state of the inner roller 26. The rectangular cross-section of the limiting slider 27 can prevent it from rotating when it slides (the inner wall of the main body 10 of the device has a sliding groove for the limiting slider 27), thereby ensuring that the inner roller 26, which is fixedly connected to the limiting slider 27, will not rotate. This ensures that the notch of the inner roller 26 always faces upward, receiving the large-weight seeds that fall rapidly from the outer roller 23 due to excessive adhesion and do not follow the near-circular motion of the outer roller 23. These seeds are then processed separately.

[0030] The steam generator 28 is fixed to the side wall of the outer drum 23 and its output end extends into the inner drum 26. It is used to replenish the low-temperature steam in the inner drum 26, thereby avoiding the situation where the low-temperature steam from the outside is difficult to enter the outer drum 23 due to the isolation between the outer drum 23 and the inner drum 26, resulting in a thin low-temperature steam in the outer drum 23 and poor sterilization effect. It ensures that the steam generator 28 can replenish the low-temperature steam according to the number, volume, weight and other factors of the grains that are stuck together in the outer drum 23, and ensures that the low-temperature steam can fully contact the grains and kernels that are stuck together, thus ensuring the sterilization effect.

[0031] Both the outer roller 23 and the inner roller 26 have several holes that penetrate the side walls for passing low-temperature steam, so that the low-temperature steam can penetrate evenly into the interior of the outer roller 23 and the inner roller 26 and make full contact with the kernels, ensuring that each kernel can be effectively sterilized.

[0032] The top of the inner roller 26 has a notch of the same length as the inner roller 26, so as to receive the kernels that are heavy due to adhesion in the outer roller 23 to the greatest extent, ensuring that the adhered kernels can enter the inner roller 26 in time for dispersing. The length of the notch is the same as that of the inner roller 26, ensuring that the adhered kernels in different positions can fall into the inner roller 26 through the notch during the rotation of the roller mechanism, avoiding any omissions.

[0033] The following is the complete working process and working principle of the above embodiments: First, the power motor 12 drives the sealing doors 11 at both ends of the device body 10 to move away from the device body 10 through threaded transmission, opening the device body 10. Then, the closing door 24 on the side wall of the intermediate shaft 25 is opened, and the seeds to be sterilized are placed between the outer roller 23 and the inner roller 26 (avoiding the closing door 24 from coinciding with the notch at the top of the inner roller 26 when placing them). After that, the power motor 12 works in reverse, driving the sealing door 11 to close, thus sealing the device body 10.

[0034] Subsequently, the drive motor 20, through a threaded connection with the driven block 21, drives the entire roller mechanism to move horizontally within the main body 10 of the device. When the roller mechanism moves to a certain area within the main body 10, the telescopic rod 13 in the corresponding area drives the sealing partition 14 to slide inward towards the inside of the main body 10, forming a sealed sterilization chamber with the inner wall of the main body 10. The independent sterilization mechanism in this area starts to supply low-temperature steam. The low-temperature steam permeates into the inside of the rollers through the holes in the side walls of the outer roller 23 and the inner roller 26. At the same time, the monitor monitors environmental parameters such as temperature and humidity inside the chamber in real time. During this process, the rotary motor 22 drives the outer roller 23 and the intermediate shaft 25 to rotate. The kernels in the outer roller 23 are sterilized as the roller rotates. Kernels that are stuck together and have a large weight fall into the inner roller 26 under the action of gravity through the notch at the top of the inner roller 26. The hardness adjustment plate on the outside of the intermediate shaft 25 rotates synchronously, contacting and breaking up the kernels that are stuck together and have a large weight. At the same time, the steam generator 28 replenishes the inner roller 26 with low-temperature steam to ensure the sterilization effect. The roller mechanism passes through multiple independent sterilization chambers in sequence. Each sterilization chamber achieves multi-level precise temperature control and sterilization according to preset temperature parameters. Finally, the roller mechanism moves to the other end of the main body 10 of the device.

[0035] Finally, the sealing door 11 on this side is opened, and the sterilized kernels are taken out through the notch of the inner roller 26 and the closed door 24. Throughout the process, the limiting slider 27 prevents the inner roller 26 from rotating, ensuring that the notch always faces upward to receive the stuck kernels, thus achieving efficient and uniform sterilization of the kernels while reducing the loss of nutrients and flavor. Example 2

[0036] refer to Figures 7 to 10 The hardness adjustment plate also includes: The fixing plate 32 is disposed inside the stirring plate 30 and the soft sleeve 31 and is fixedly connected to the stirring plate 30. The fixing plate 32 is the fixing base of the elastic element 35, thereby ensuring the installation stability of the elastic element 35 and indirectly providing support for the elastic element 35. When the soft sleeve 31 is bent to a certain extent, the rotating baffle 34, together with the elastic element 35 and the fixing plate 32, provides a certain support force to the soft sleeve 31, ensuring that the fixing plate 32 can break up the grains that are sticking together.

[0037] The fixed shaft 33 is set inside the stirring plate 30 and the soft sleeve 31 and is fixedly connected to the stirring plate 30. It serves as the rotation shaft of the rotating baffle 34, ensuring that the rotating baffle 34 can rotate flexibly around the fixed shaft 33 to adapt to the bending degree of the soft sleeve 31.

[0038] Several elastic elements 35 are respectively disposed between the fixed plate 32 and the rotating baffle 34, with one end fixedly connected to the fixed plate 32 and the other end fixedly connected to the rotating baffle 34. The elastic elements 35 provide the rotating baffle 34 with restoring force and buffering force through their own elastic deformation. When the rotating baffle 34 is impacted by the adhering kernels, the elastic elements 35 deform to absorb the impact force and prevent the kernels from breaking. At the same time, they push the rotating baffle 34 to fit against the inner wall of the bent soft sleeve 31, increasing the "hardness" of the soft sleeve 31. This allows for a greater force to be applied to larger kernels that have bent the soft sleeve 31 to a certain extent, thereby improving the crushing effect.

[0039] The soft sleeve 31 is made of an elastic material that can adaptively bend according to the size of the kernels it contacts. When contacting kernels with less adhesion, the bending degree is small to avoid excessive force that could cause the kernels to break directly. When contacting kernels with more adhesion, the bending degree is large, and its "hardness" is increased through contact with the rotating baffle 34 to ensure the kernels are properly crushed. This adaptive adjustment characteristic allows the hardness adjustment plate to adapt to kernels in different states, ensuring the crushing effect while protecting the integrity of the kernels.

[0040] The rotating baffle 34 is at an acute angle to the rotation direction of the stirring plate 30 and the soft sleeve 31, so as to ensure that when the soft sleeve 31 is rotating and bending, it can better fit with the inclined rotating baffle 34, and its "hardness" is evenly increased after bending to a certain extent.

[0041] The following is the complete working process and working principle of the above embodiments: Throughout the sterilization process, when the rotary motor 22 drives the intermediate shaft 25 to rotate, the hardness adjustment plate on the outer side of the intermediate shaft 25 rotates synchronously with it. During this process, the elastic sleeve 31 first contacts the kernels that are stuck together inside the inner roller 26: when facing kernels that are less stuck and lighter, the sleeve 31 bends less, gently stirring with its own elasticity, breaking them up while avoiding damage to individual kernels; when encountering kernels that are more stuck and heavier, the sleeve 31 is compressed and bends more significantly, its inner wall gradually fitting against the inclined rotating baffle 34, pushing the rotating baffle 34 to rotate around the fixed shaft 33. At this time, the elastic element 35 elastically deforms. The flexible sleeve 31 absorbs some of the impact force to act as a buffer, and also provides reverse support to the rotating baffle 34 through its own elasticity. This allows the "hardness" of the end of the flexible sleeve 31 to adaptively increase, enhancing the impact force on heavy, sticky kernels and achieving efficient dispersal. Once the sticky kernels are dispersed, the pressure on the flexible sleeve 31 decreases, the elastic element 35 drives the rotating baffle 34 to reset, and the flexible sleeve 31 returns to its original state, continuing to adaptively stir the subsequent kernels. This ensures the dispersal effect to improve the uniformity of sterilization while maximizing the protection of the kernel integrity. Example 3

[0042] refer to Figures 1 to 10 A multi-stage, precisely temperature-controlled, low-temperature steam sterilization process for kernels includes the following steps: a. The two motors 12 operate, driving the two sealed doors 11 at both ends of the main body 10 to move away from the main body 10, opening the main body 10. Then, the closed door 24 is opened, and the kernels to be sterilized by low-temperature steam are placed between the outer roller 23 and the inner roller 26. Figure 8 As shown, when placing the kernels, it is necessary to avoid the notch of the closed door 24 coinciding with the notch of the inner roller 26, which would cause the kernels to be directly placed inside the inner roller 26. The power motor 12 operates, and the sealing door 11 re-seals the main body 10 of the device. b. The drive motor 20 operates, driving the roller mechanism to move inside the main body 10 of the device. Whenever the roller mechanism moves to a certain area inside the main body 10 of the device, the corresponding telescopic rod 13 operates, driving the corresponding sealing partition 14 into the interior of the main body 10 of the device. Together with the inner wall of the main body 10 of the device, the roller mechanism is sealed. The independent sterilization mechanism and monitor in this area operate to sterilize the kernels inside the roller mechanism and monitor the environmental parameters. Thus, the targeted temperature parameters can be set according to the sterilization requirements of the kernels at different stages. The environmental data fed back by the monitor in real time can adjust the working status of the sterilization mechanism in a timely manner, achieve precise temperature control sterilization, and improve the controllability and stability of the sterilization process. c. During this period, the rotary motor 22 drives the outer drum 23 to rotate, generating a combined effect of centrifugal force and gravity. The grains that are stuck together and are relatively heavy fall into the inner drum 26 through the notch at the top of the inner drum 26 under the action of gravity. They are gradually dispersed by being hit by several hardness adjustment plates, thus ensuring that the dispersed grains can come into more full contact with the low-temperature steam, thereby solving the problem of steam not being able to penetrate and uneven sterilization caused by sticking. d. After being sterilized in multiple sterilization chambers, the roller mechanism moves to the other end of the main body 10 of the device. During this period, the kernels undergo multi-stage precise temperature control sterilization through progressive processing in multiple sterilization chambers to fully kill microorganisms while preserving nutrients and flavor to the greatest extent. Then, the sealed door 11 on this side is opened, and the sterilized kernels are taken out through the inner roller 26, the notch, and the closed door 24.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-temperature steam sterilization device for kernels, characterized in that, Comprising: A drum mechanism, including a rotating outer drum (23), an inner drum (26), and an intermediate shaft (25) coaxial with the outer drum (23) and the inner drum (26), for driving the kernels inside the outer drum (23) to rotate for sterilization through its own rotation, and moving the agglomerated kernels into the inner drum (26) for rotational sterilization; A number of hardness adjustment plates, all fixedly connected to the outside of the intermediate shaft (25), including stirring plates (30), soft sleeves (31) provided at one end of the stirring plates (30) away from the intermediate shaft (25), and rotating baffles (34) inclined inside the stirring plates (30) and the soft sleeves (31), the hardness adjustment plates being used to change the hardness of the end through the bending degree of the soft sleeves (31) and stirring the agglomerated and crushed grains entering the inner drum (26).

2. The low-temperature steam sterilization device for kernels according to claim 1, characterized in that, It further includes: A device main body (10), which is set as a channel structure with both ends open and a cross-section in the shape of a "mouth"; Two sealing doors (11), respectively arranged at both ends of the device main body (10), for sealing both ends of the device main body (10); Two power motors (12), respectively arranged on both sides of the device main body (10) and fixedly connected to the device main body (10), the output ends being threadedly connected to the sealing doors (11) on the same side, for driving the corresponding power motors (12) to move; A number of telescopic rods (13), respectively fixedly connected to the top of the device main body (10); A number of sealing partitions (14), in the same vertical plane as the corresponding telescopic rods (13), and located inside the device main body (10) and slidably connected to the device main body (10), for forming a sealed sterilization chamber inside the device main body (10) through its own movement.

3. The low-temperature steam sterilization device for kernels according to claim 2, characterized in that: The device main body (10) is provided with independent sterilization mechanisms and monitors fixedly connected to its inner wall between each adjacent sealing partition (14).

4. The low-temperature steam sterilization device for kernels according to claim 2, characterized in that: The drum mechanism further includes: A driving motor (20), arranged outside the device main body (10) and fixedly connected to the device main body (10); A driven block (21), arranged inside the device main body (10), and slidably connected to the device main body (10) and threadedly connected to the output end of the driving motor (20), being driven by the driving motor (20) to move horizontally inside the device main body (10); A rotating motor (22), arranged inside the driven block (21), and the output end being fixedly connected to the outer drum (23), for driving the outer drum (23) and the intermediate shaft (25) to rotate; A closing door (24), opened on the side wall of the intermediate shaft (25); A limit slider (27), with a rectangular cross-section, fixedly connected to the inner drum (26), and slidably connected to the device main body (10), for limiting the state of the inner drum (26); A steam generator (28), fixed to the side wall of the outer drum (23), and the output end extending into the inner drum (26), for supplementing the low-temperature steam inside the inner drum (26).

5. The low-temperature steam sterilization device for kernels according to claim 1, characterized in that: Both the outer roller (23) and the inner roller (26) have several holes that penetrate the sidewalls for passing low-temperature steam.

6. The low-temperature steam sterilization device for kernels according to claim 1, characterized in that: The top of the inner roller (26) has a notch of the same length as the inner roller (26).

7. The low-temperature steam sterilization device for kernels according to claim 4, characterized in that: The hardness adjustment plate also includes: A fixing plate (32) is disposed inside the stirring plate (30) and the soft sleeve (31) and is fixedly connected to the stirring plate (30); A fixed shaft (33) is disposed inside the stirring plate (30) and the soft sleeve (31) and is fixedly connected to the stirring plate (30) as the rotating shaft of the rotating baffle (34); Several elastic components (35) are respectively disposed between the fixed plate (32) and the rotating baffle (34), with one end fixedly connected to the fixed plate (32) and the other end fixedly connected to the rotating baffle (34).

8. The low-temperature steam sterilization device for kernels according to claim 1, characterized in that: The soft sleeve (31) is made of an elastic material.

9. The low-temperature steam sterilization device for kernels according to claim 1, characterized in that: The rotating baffle (34) forms an acute angle with the rotation direction of the stirring plate (30) and the soft sleeve (31).

10. A low-temperature steam sterilization process for kernels, employing the low-temperature steam sterilization device for kernels as described in claim 7, characterized in that, Includes the following steps: a. When the two motors (12) are working, they drive the two sealing doors (11) at both ends of the main body (10) of the device to move away from the main body (10) of the device. The main body (10) of the device opens, and then the closed door (24) is opened. The kernels to be sterilized by low-temperature steam are placed between the outer roller (23) and the inner roller (26). The motors (12) are working, and the sealing doors (11) reseal the main body (10) of the device. b. The drive motor (20) works, driving the roller mechanism to move inside the main body (10) of the device. Whenever the roller mechanism moves to a certain area inside the main body (10), the corresponding telescopic rod (13) works, driving the corresponding sealing partition (14) to enter the interior of the main body (10) of the device, and sealing the roller mechanism with the inner wall of the main body (10). The independent sterilization mechanism and monitor in this area work to sterilize the kernels inside the roller mechanism and monitor environmental parameters. c. During this period, the rotary motor (22) drives the outer roller (23) to rotate. Due to mutual adhesion, the heavy grains fall into the inner roller (26) through the gap at the top of the inner roller (26) under the action of gravity, and are gradually dispersed by being hit by several hardness adjustment plates. d. After being sterilized in multiple sterilization chambers, the roller mechanism moves to the other end of the main body (10) of the device, opens the sealing door (11) on this side, and takes out the sterilized kernels through the inner roller (26) and the notch and closing door (24).

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