Irradiation sterilization method and equipment for mushroom sticks

Abstract

The irradiation sterilization equipment comprises a sterilization chamber, a first conveying belt and a second conveying belt, a feeding port and a discharging port are formed in the left side and the right side of the sterilization chamber respectively, and the first conveying belt and the second conveying belt extend into the sterilization chamber respectively so as to be used for conveying the tremella sticks; an irradiation device and a rotating plate are arranged in the sterilization chamber, the rotating plate is rotationally assembled in the sterilization chamber and is driven by a motor to rotate, a plurality of mushroom stick frames are arranged on the peripheral side of the middle of the rotating plate in a surrounding manner, and an electron beam emitted by an electron accelerator irradiates mushroom sticks below for irradiation sterilization; compared with a traditional pot type steam sterilization mode needing to consume a large amount of energy to maintain generation and circulation of steam, the irradiation sterilization technology adopted by the invention can rapidly and efficiently sterilize and does not depend on high-temperature steam, the energy conversion efficiency is obviously superior to that of a traditional method, the energy demand is obviously reduced, the production cost of an enterprise is reduced, and the production cost of the enterprise is reduced. The environment-friendly concept of sustainable development is embodied.

Description

Technical Field

[0001] The invention relates to the technical field of irradiation sterilization, in particular to a irradiation sterilization method and equipment for mushroom spawn sticks. Background Art

[0002] In the current mushroom cultivation industry, the sterilization process of mushroom sticks is a critical step in ensuring the purity and survival rate of the mushroom strain. Traditional sterilization methods mainly rely on boiler-type steam sterilization. Although this method can achieve a certain degree of sterilization effect, it has several significant drawbacks in practical application.

[0003] First, boiler-style steam sterilization has low sterilization efficiency. During the sterilization process, steam penetration is limited, resulting in uneven heating of certain areas of the culture stick, potentially leading to incomplete inactivation of microorganisms. This uneven sterilization directly impacts subsequent bacterial growth and yield, and can even lead to the failure of an entire production batch.

[0004] Secondly, boiler-type steam sterilization consumes a lot of energy. This method typically requires prolonged, high-temperature heating to achieve a satisfactory sterilization effect. This not only makes the entire sterilization process time-consuming but also leads to high energy costs, placing an additional burden on manufacturers. In the current global climate of promoting energy conservation and emission reduction, finding more efficient sterilization methods is particularly important. Summary of the Invention

[0005] The object of the present invention is to provide a method and apparatus for irradiation sterilization of mushroom spawn sticks, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an irradiation sterilization device for mushroom spawn, comprising a sterilization chamber, a first conveyor belt, and a second conveyor belt, wherein a feed port and a discharge port are respectively provided on the left and right sides of the sterilization chamber, and the first conveyor belt and the second conveyor belt extend into the sterilization chamber through the feed port and the discharge port, respectively, for transporting the mushroom spawn; The sterilization chamber is provided with an irradiation device and a rotating plate. The rotating plate is rotatably assembled in the sterilization chamber and rotates along its own axis under the drive of a motor. A plurality of mushroom stick racks are arranged around the outer peripheral side of the central portion of the rotating plate. The mushroom stick racks are used to place mushroom sticks and drive the mushroom sticks to rotate synchronously with the rotation of the rotating plate. The irradiation device is arranged above the rotating plate, so that the electron beam emitted by the electron accelerator on the irradiation device irradiates the mushroom sticks rotating below it for irradiation sterilization. The first conveyor belt and the second conveyor belt are respectively provided with a first moving device and a second moving device on the side of the end of the sterilization chamber. The first moving device is used to transport the mushroom sticks on the first conveyor belt to the mushroom stick rack for rotation sterilization, and the second moving device is used to transport the irradiated mushroom sticks from the mushroom stick rack to the second conveyor belt.

[0007] Furthermore, the mushroom stick rack includes a fixed frame and an annular frame, the fixed frame is connected to the rotating plate, a first placement plate, a second placement plate, a first connecting plate and a second connecting plate are connected between the annular frame and the fixed frame, the first connecting plate and the second connecting plate are respectively connected to the left and right ends of the annular frame and the fixed frame, the first placement plate and the second placement plate are respectively connected to the upper and lower ends of the annular frame and the fixed frame, and the space between the fixed frame and the annular frame is used to place mushroom sticks; The lower surface of the first placement plate and the upper surface of the second placement plate are both provided with through grooves, and a number of rollers are rotatably arranged at equal intervals along the length direction in the through grooves on both sides. The middle parts of the first placement plate and the second placement plate are both provided with through openings.

[0008] Furthermore, a number of circular grooves are provided at equal intervals around the outer peripheral side of the middle part of the rotating plate, and a connecting block is rotatably installed in the bearing in each circular groove. A connecting rod is provided on the outer end face of the connecting block, and the other end of the connecting rod is connected to the mushroom stick rack, and a gear is provided on the surface of the connecting rod. An arc-shaped rack is provided on the inner wall of the sterilization chamber away from the first conveyor belt. The arc-shaped rack is located on the side of the fixed frame and can be engaged with the gear. When the rotating plate drives the mushroom stick rack to rotate, when the mushroom stick rack rotates to the arc-shaped rack, the gear on it engages with the arc-shaped rack, and as the rotating plate rotates, the gear is driven to rotate along its own axis through the arc-shaped rack, thereby driving the mushroom stick rack to rotate 180° along its own axis.

[0009] Furthermore, the end of the first conveyor belt is located in front of the right side of the front end face of the rotating plate, and the end of the second conveyor belt is located in front of the bottom side of the front end face of the rotating plate; the first moving device and the second moving device respectively include a first telescopic cylinder and a second telescopic cylinder, and the ends of the piston rods of the first telescopic cylinder and the second telescopic cylinder are both provided with flexible push blocks, and the first telescopic cylinder is arranged in the front side of the end of the first conveyor belt, and its piston rod is aligned with the right side of the front end face of the rotating plate; the second telescopic cylinder is assembled on the rear end face of the sterilization chamber and is located behind the end of the second conveyor belt, and the positions corresponding to each mushroom stick rack on the rotating plate are provided with through holes, and the through holes extend into the mushroom stick rack, and the piston rod of the second telescopic cylinder can pass through the through holes and extend into the mushroom stick rack, thereby pushing the mushroom sticks therein out of the mushroom stick rack.

[0010] Furthermore, a ventilation duct is provided on the front side of the interior of the sterilization chamber, and the ventilation duct is located on the middle front side of the rotating plate, and the mushroom stick racks are located around the outer peripheral side of the ventilation duct. A cross partition is provided inside the ventilation duct to divide the interior of the ventilation duct into four ventilation chambers, and a plurality of air inlets are provided on the upper and lower sides of the outer peripheral surface of the ventilation duct, and a plurality of air outlets are provided on the left and right sides of the outer peripheral surface of the ventilation duct, and each air inlet and air outlet is respectively connected to the ventilation chamber on the corresponding side. A filter is provided on the front side of the interior of the ventilation duct, and a fan is provided at the front end of the sterilization chamber, and the air inlet side of the fan is connected with the ventilation chambers on the upper and lower sides through a pipe, and the air outlet side is connected with the ventilation chambers on the left and right sides through a pipe.

[0011] Furthermore, a plurality of partitions are evenly spaced on the conveying surfaces of the first conveyor belt and the second conveyor belt, and the interval between two adjacent partitions forms a limiting path for placing mushroom sticks, and the left and right end surfaces of the partitions are both arc-shaped surfaces.

[0012] Furthermore, a number of position sensors for detecting materials are evenly spaced apart at the side ends of the first conveyor belt and the second conveyor belt.

[0013] Furthermore, each side edge of the annular frame, the first placement plate, the second placement plate, the first connecting plate and the second connecting plate is chamfered, which can effectively prevent the mushroom sticks from being scratched during movement.

[0014] In order to solve the above technical problems, the sterilization method of the sterilization equipment of the present invention comprises the following steps: S1. Place the mushroom sticks to be sterilized on the first conveyor belt and transport them to the sterilization chamber. When the mushroom sticks are transported to the front of the rotating plate, the first moving device is activated to push the mushroom sticks into the mushroom stick rack directly behind it. S2: The rotating plate rotates to drive the mushroom stick rack with the mushroom sticks to the bottom of the irradiation device for irradiation sterilization, and then the rotating plate continues to drive the mushroom stick rack to rotate. After rotating through the arc-shaped rack, the mushroom stick rack rotates 180°, and then the rotating plate drives the mushroom stick rack to the bottom of the irradiation device again, and irradiates the other side of the surface for sterilization; S3: The rotating plate drives the sterilized mushroom sticks to rotate to the bottom side, and the second moving device starts to push the mushroom sticks from the mushroom stick rack to the second conveyor belt in front, and is transported out of the sterilization chamber by the second conveyor belt Compared with the prior art, the present invention has the following beneficial effects: 1. Easy operation and high degree of automation: The present invention consists of a first conveyor belt, a rotating plate, a second conveyor belt, and first and second moving devices working in conjunction. Simply placing white fungus sticks on the first conveyor belt automatically achieves continuous feeding, sterilization, and discharge, significantly shortening the production cycle and meeting the needs of modern large-scale mushroom production. Compared with traditional batch sterilization methods, the assembly line design significantly improves production capacity and can meet higher market demands.

[0015] 2. High sterilization efficiency: Compared with the existing pot-type steam sterilization method, the present invention adopts irradiation sterilization technology, which can effectively kill most microorganisms, including bacteria, viruses and fungi, in a short time. This change effectively reduces the time required for sterilization. In addition, the rotatable mushroom stick rack works in conjunction with the arc-shaped rack, which can automatically complete the flipping of the mushroom stick rack and secondary irradiation during the sterilization movement operation, thereby achieving all-round and thorough sterilization, meeting the needs of modern mushroom production for rapid and efficient sterilization. 3. Low energy consumption: Traditional boiler-type steam sterilization not only consumes a large amount of energy to heat the steam, but also consumes a large amount of energy during the process of maintaining the high temperature and high pressure. The irradiation sterilization method of the present invention has a significant advantage in energy conversion efficiency, which can reduce overall energy consumption and reduce enterprise operating costs. It is also environmentally friendly and meets the requirements of sustainable development.

[0016] 4. Superior environmental performance: Since irradiation sterilization can be performed at room temperature and does not produce byproducts such as boiling or steam, its impact on the environment is minimal. Furthermore, irradiation technology can reduce water waste and thermal pollution caused by steam release, meeting current societal requirements for environmental protection and resource conservation, and providing strong support for green production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the right side structure of the sterilization chamber of the present invention; Figure 2 It is a schematic diagram of the left side structure of the sterilization chamber of the present invention; Figure 3 Schematic diagram of the internal structure of the sterilization chamber of the present invention; Figure 4 For the present invention Figure 3 A partial enlarged view of the middle part; Figure 5 It is the front view of the present invention; Figure 6 is a side view of the present invention; Figure 7 This is a structural schematic diagram of the mushroom stick rack of the present invention; Figure 8 This is a disassembled diagram of the ventilation duct structure of the present invention.

[0018] In the figure, sterilization chamber-1, first conveyor belt-2, second conveyor belt-3, feed port-4, discharge port-5, irradiation device-6, rotating plate-7, motor-8, mushroom stick rack-9, first moving device-10, second moving device-11, fixed frame-901, annular frame-902, first placement plate-903, second placement plate-904, first connecting plate-905, second connecting plate-906, through groove-907, roller-908, opening-909, connecting block-910, connecting rod-911, gear-912, arc-shaped rack-101, through hole-913, ventilator-12, ventilation cavity-121, air inlet-122, air outlet-123, filter screen-124, cross partition-125, fan-13, partition-14, limit channel-15, position sensor-16. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figures 1 to 3 As shown, an irradiation sterilization device for mushroom spawn includes a sterilization chamber 1, a first conveyor belt 2, and a second conveyor belt 3. A feed port 4 and a discharge port 5 are provided on the left and right sides of the sterilization chamber 1, respectively. The first conveyor belt 2 and the second conveyor belt 3 extend into the sterilization chamber 1 through the feed port 4 and the discharge port 5, respectively, for transporting the mushroom spawn. An irradiation device 6 and a rotating plate 7 are provided in the sterilization chamber 1. The rotating plate 7 is rotatably assembled in the sterilization chamber 1 and rotates along its own axis driven by a motor 8. A number of mushroom stick racks 9 are arranged around the outer peripheral side of the middle portion of the rotating plate 7. The mushroom stick racks 9 are used to place mushroom sticks and drive the mushroom sticks to rotate synchronously with the rotation of the rotating plate 7. The irradiation device 6 is provided above the rotating plate 7, so that the electron beam emitted by the electron accelerator on the irradiation device 6 is irradiated to the mushroom sticks rotating below it for irradiation sterilization; The first conveyor belt 2 and the second conveyor belt 3 are respectively provided with a first moving device 10 and a second moving device 11 on the side of the end thereof in the sterilization chamber 1. The first moving device 10 is used to deliver the mushroom sticks on the first conveyor belt 2 to the mushroom stick rack 9 for rotation sterilization, and the second moving device 11 is used to deliver the irradiated mushroom sticks from the mushroom stick rack 9 to the second conveyor belt 3.

[0021] See also Figure 7As shown, the mushroom stick rack 9 includes a fixed frame 901 and an annular frame 902, the fixed frame 901 is connected to the rotating plate 7, and a first placing plate 903, a second placing plate 904, a first connecting plate 905 and a second connecting plate 906 are connected between the annular frame 902 and the fixed frame 901, the first connecting plate 905 and the second connecting plate 906 are respectively connected to the left and right ends of the annular frame 902 and the fixed frame 901, the first placing plate 903 and the second placing plate 904 are respectively connected to the upper and lower ends of the annular frame 902 and the fixed frame 901, and the space between the fixed frame 901 and the annular frame 902 is used to place mushroom sticks; the lower surface of the first placing plate 903 and the upper surface of the second placing plate 904 are both provided with through grooves 907, and a number of rollers 908 are rotatably provided in the through grooves 907 on both sides along the length direction at equal intervals, and the middle parts of the first placing plate 903 and the second placing plate 904 are both provided with through openings 909; When the mushroom stick rack 9 rotates to the bottom or rightmost side along with the rotating plate 7, the first placement plate 903 or the second placement plate 904 is in the bottom state. Therefore, when the first moving device 10 or the second moving device 11 pushes the mushroom stick, the bottom of the mushroom stick contacts the roller 908 on the first placement plate 903 or the second placement plate 904. Then, when the mushroom stick is sent out of or into the mushroom stick rack 9, the rotatable roller can assist the movement of the mushroom stick, and at the same time, it can also avoid excessive sliding friction between the mushroom stick and the mushroom stick rack 9 when the mushroom stick moves, which may cause damage to the mushroom stick. When the mushroom stick rack 9 rotates to the bottom of the irradiation device 6, the first connecting plate 905 is located at the bottom, and the mushroom sticks therein fall on the first connecting plate 905 under the action of gravity as the rotating plate 7 rotates, and are supported and placed by the first connecting plate 905. The openings 909 opened on the first connecting plate 905 and the second connecting plate 906 can minimize the contact area with the mushroom sticks without affecting the supporting effect, thereby avoiding the problem of incomplete sterilization caused by the contact parts.

[0022] See also Figure 3 、 Figure 4 、 Figure 6 and Figure 7 As shown, a number of circular grooves are provided at equal intervals around the outer circumference of the middle part of the rotating plate 7, and a connecting block 910 is rotatably installed in each circular groove. A connecting rod 911 is provided on the outer end surface of the connecting block 910, and the other end of the connecting rod 911 is connected to the mushroom stick rack 9, and a gear 912 is sleeved on the surface of the connecting rod 911. An arc-shaped rack 101 is provided on the inner wall of the sterilization chamber 1 away from the first conveyor belt 2. The arc-shaped rack 101 is located on the side of the fixed frame 901 and can be engaged with the gear 912. When the rotating plate 7 drives the mushroom stick rack 9 to rotate, when the mushroom stick rack 9 rotates to the arc-shaped rack 101, the gear 912 thereon is engaged with the arc-shaped rack 101, and as the rotating plate 7 rotates, the gear 912 is driven to rotate along its own axis through the arc-shaped rack 101, thereby driving the mushroom stick rack 9 to rotate 180° along its own axis. Each mushroom stick needs to be sterilized twice. The first sterilization: it is pushed to the mushroom stick rack 9 by the first conveyor belt 2, and then the mushroom stick rack 9 is driven by the rotating plate 7 to rotate to the bottom of the irradiation device 6. The electron beam emitted by the electron accelerator is irradiated to the upper surface of the mushroom stick. The electron beam passes through the material of the mushroom stick and directly reaches the microorganisms inside. Due to the penetrating ability of the electron beam, it can effectively sterilize the upper surface and the inside of the mushroom stick. The second sterilization: Then the rotating plate 7 continues to drive the mushroom stick rack 9 to rotate one circle. When it rotates to the arc rack 101, the gear 9 on the mushroom stick rack 9 12 is engaged with the arc-shaped rack 101, so that under the action of the arc-shaped rack 101, the mushroom stick rack 9 rotates 180°. Therefore, when the mushroom stick rack 9 is rotated to the bottom of the irradiation device 6 again, the original lower surface of the mushroom stick becomes upward, and the electron beam emitted by the electron accelerator is irradiated to the original lower surface of the mushroom stick, and the lower surface and the interior are irradiated and sterilized. Through two irradiations, the upper and lower surfaces of the mushroom stick are sterilized without dead angles, avoiding the problem of sterilization dead angles caused by the inability of the electron beam to penetrate completely due to the thickness of the mushroom stick, and achieving completely uniform and thorough sterilization.

[0023] See also Figure 5 and Figure 6 As shown, the end of the first conveyor belt 2 is located in front of the right side of the front end face of the rotating plate 7, and the end of the second conveyor belt 3 is located in front of the bottom side of the front end face of the rotating plate 7; the first moving device 10 and the second moving device 11 respectively include a first telescopic cylinder and a second telescopic cylinder, and the ends of the piston rods of the first telescopic cylinder and the second telescopic cylinder are provided with flexible push blocks. The first telescopic cylinder is arranged in front of the end of the first conveyor belt 2, and its piston rod is aligned with the right side of the front end face of the rotating plate 7; the second telescopic cylinder is assembled on the rear end face of the sterilization chamber 1 and is located behind the end of the second conveyor belt 3. The positions corresponding to each mushroom stick rack 9 on the rotating plate 7 are provided with through holes 913, and the through holes 913 extend through and into the mushroom stick rack 9. The piston rod of the second telescopic cylinder can pass through the through holes 913 and extend into the mushroom stick rack 9, thereby pushing the mushroom sticks therein out of the mushroom stick rack 9; When the first conveyor belt 2 transports the mushroom sticks to the front right side of the rotating plate 7, the piston rod of the first telescopic rod is extended, and the mushroom sticks are pushed directly into the mushroom stick rack 9 directly behind through the flexible push block, and the piston rod of the first telescopic rod continues to extend until the mushroom sticks are completely pushed into the mushroom stick rack 9; when the sterilization is completed, the piston rod of the second telescopic cylinder is extended, passes through the through hole 913 and enters the mushroom stick rack 9, thereby pushing the sterilized mushroom sticks straight out of the mushroom stick rack 9 and falling onto the second conveyor belt 3.

[0024] See also Figure 3 、 Figure 6 and Figure 8As shown, a ventilation tube 12 is provided on the front side of the interior of the sterilization chamber 1, and the ventilation tube 12 is located on the front side of the middle part of the rotating plate 7. Each mushroom stick rack 9 is located around the outer peripheral side of the ventilation tube 12. A cross partition 125 is provided inside the ventilation tube 12 to divide the interior of the ventilation tube 12 into four ventilation chambers 121. A plurality of air inlets 122 are provided on the upper and lower sides of the outer peripheral surface of the ventilation tube 12, and a plurality of air outlets 123 are provided on the left and right sides of the outer peripheral surface of the ventilation tube 12. Each air inlet 122 and air outlet 123 is respectively connected to the ventilation chamber 121 on the corresponding side, a filter screen 124 is provided on the front side of the interior of the ventilation tube 12, and a fan 13 is provided at the front end of the sterilization chamber 1, and the air inlet side of the fan 13 is connected to the ventilation chambers 121 on the upper and lower sides through a pipe, and the air outlet side is connected to the ventilation chambers 121 on the left and right sides through a pipe; During the sterilization process of the rotating plate 7, the staff can start the fan 13, and the fan 13 draws the air in the sterilization chamber 1 into the ventilation cavity 121 on one side through the air inlet 122, and then blows it back into the sterilization chamber 1 through the air outlet 123 on the ventilation cavity 121 on the other side. When blowing into the sterilization chamber 1, the air flow blown out of the blowing hole will first impact the surface of the mushroom stick on the side, thereby blowing off and taking away the dust or stains on the surface of the mushroom stick during the production process. The dust and stains will be sucked into the ventilation cavity 121 by the air inlet 122 along with the air flow and intercepted and adsorbed by the filter 124. By cleaning the dust on the surface of the mushroom stick in advance, the dust accumulated on the surface of the mushroom stick can be prevented from affecting the effect of irradiation sterilization. The continuously circulating air flow also helps to reduce the temperature of the sterilization chamber 1 and assist the irradiation device 6 in heat dissipation.

[0025] See also Figure 3 As shown, a number of partitions 14 are evenly spaced on the conveying surfaces of the first conveyor belt 2 and the second conveyor belt 3, and the interval between two adjacent partitions 14 forms a limiting path 15 for placing mushroom sticks. The left and right end surfaces of the partition 14 are both arc-shaped surfaces. A number of position sensors 16 for detecting materials are evenly spaced on the side ends of the first conveyor belt 2 and the second conveyor belt 3; The design of the limiting path 15 facilitates the spacing of the mushroom sticks, and is practical when used with the position sensor 16, so that the mushroom sticks can be accurately positioned during transportation, and can be accurately pushed into the mushroom stick rack 9. On the other hand, the smooth curved surface design of the partitions 14 on both sides prevents the mushroom sticks from being scratched during the pushing process, and can be sent directly into the mushroom stick rack 9 along the limiting path 15 without any skew problems, ensuring that the mushroom sticks will not be damaged during the pushing process.

[0026] This embodiment also provides a sterilization method for the above sterilization equipment, comprising the following steps: S1, placing the mushroom sticks to be sterilized on the first conveyor belt 2, and transporting them to the sterilization chamber 1 by the first conveyor belt 2. When the mushroom sticks are transported to the front of the rotating plate 7, the first moving device 10 is started to push the mushroom sticks into the mushroom stick rack 9 directly behind; S2: The rotating plate 7 rotates to drive the mushroom stick rack 9 with the mushroom sticks placed thereon to rotate to the bottom of the irradiation device 6 for irradiation sterilization. Then the rotating plate 7 continues to drive the mushroom stick rack 9 to rotate. After rotating through the arc-shaped rack 101, the mushroom stick rack 9 rotates 180°. Then the rotating plate 7 drives the mushroom stick rack 9 to rotate to the bottom of the irradiation device 6 again, and irradiates the other side surface thereof for sterilization. S3: The rotating plate 7 drives the sterilized mushroom sticks to rotate to the bottom side, and the second moving device 11 starts to push the mushroom sticks from the mushroom stick rack 9 to the second conveyor belt 3 in front, and is transported out of the sterilization chamber 1 by the second conveyor belt 3.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An irradiation sterilization device for mushroom spawn, characterized by: The sterilization chamber comprises a sterilization chamber, a first conveyor belt and a second conveyor belt, wherein a feed port and a discharge port are respectively provided on the left and right sides of the sterilization chamber, and the first conveyor belt and the second conveyor belt extend into the sterilization chamber through the feed port and the discharge port respectively for transporting mushroom sticks; The sterilization chamber is provided with an irradiation device and a rotating plate. The rotating plate is rotatably assembled in the sterilization chamber and rotates along its own axis under the drive of a motor. A plurality of mushroom stick racks are arranged around the outer peripheral side of the central portion of the rotating plate. The mushroom stick racks are used to place mushroom sticks and drive the mushroom sticks to rotate synchronously with the rotation of the rotating plate. The irradiation device is arranged above the rotating plate, so that the electron beam emitted by the electron accelerator on the irradiation device irradiates the mushroom sticks rotating below it for irradiation sterilization. The first conveyor belt and the second conveyor belt are respectively provided with a first moving device and a second moving device on the side of the end of the sterilization chamber. The first moving device is used to transport the mushroom sticks on the first conveyor belt to the mushroom stick rack for rotation sterilization, and the second moving device is used to transport the irradiated mushroom sticks from the mushroom stick rack to the second conveyor belt.

2. The irradiation sterilization equipment for mushroom spawn according to claim 1, characterized in that: The mushroom stick rack includes a fixed frame and an annular frame, the fixed frame is connected to the rotating plate, a first placement plate, a second placement plate, a first connecting plate and a second connecting plate are connected between the annular frame and the fixed frame, the first connecting plate and the second connecting plate are respectively connected to the left and right ends of the annular frame and the fixed frame, the first placement plate and the second placement plate are respectively connected to the upper and lower ends of the annular frame and the fixed frame, and the space between the fixed frame and the annular frame is used to place mushroom sticks; The lower surface of the first placement plate and the upper surface of the second placement plate are both provided with through grooves, and a number of rollers are rotatably arranged at equal intervals along the length direction in the through grooves on both sides. The middle parts of the first placement plate and the second placement plate are both provided with through openings.

3. The irradiation sterilization equipment for mushroom spawn according to claim 1 or 2, characterized in that: A number of circular grooves are provided at equal intervals around the outer circumference of the middle part of the rotating plate, and a connecting block is rotatably installed in the bearing in each circular groove. A connecting rod is provided on the outer end face of the connecting block, and the other end of the connecting rod is connected to the mushroom stick rack, and a gear is sleeved on the surface of the connecting rod. An arc-shaped rack is provided on the inner wall of the sterilization chamber away from the first conveyor belt. The arc-shaped rack is located on the side of the fixed frame and can be engaged with the gear. When the rotating plate drives the mushroom stick rack to rotate, when the mushroom stick rack rotates to the arc-shaped rack, the gear on it engages with the arc-shaped rack, and as the rotating plate rotates, the gear is driven to rotate along its own axis through the arc-shaped rack, thereby driving the mushroom stick rack to rotate 180° along its own axis.

4. The irradiation sterilization equipment for mushroom spawn according to claim 2, characterized in that: The end of the first conveyor belt is located in front of the right side of the front end face of the rotating plate, and the end of the second conveyor belt is located in front of the bottom side of the front end face of the rotating plate; the first moving device and the second moving device respectively include a first telescopic cylinder and a second telescopic cylinder, and the ends of the piston rods of the first telescopic cylinder and the second telescopic cylinder are both provided with flexible push blocks, and the first telescopic cylinder is arranged in front of the end of the first conveyor belt, and its piston rod is aligned with the right side of the front end face of the rotating plate; the second telescopic cylinder is assembled on the rear end face of the sterilization chamber and is located behind the end of the second conveyor belt, and the positions corresponding to each mushroom stick rack on the rotating plate are provided with through holes, and the through holes extend into the mushroom stick rack, and the piston rod of the second telescopic cylinder can pass through the through holes and extend into the mushroom stick rack, thereby pushing the mushroom sticks therein out of the mushroom stick rack.

5. The irradiation sterilization equipment for mushroom spawn according to claim 1, characterized in that: A ventilation duct is provided on the front side of the interior of the sterilization chamber, and the ventilation duct is located on the middle front side of the rotating plate. The mushroom stick racks are located around the outer peripheral side of the ventilation duct. A cross partition is provided inside the ventilation duct to divide the interior of the ventilation duct into four ventilation chambers. Several air inlets are provided on the upper and lower sides of the outer peripheral surface of the ventilation duct, and several air outlets are provided on the left and right sides of the outer peripheral surface of the ventilation duct. Each air inlet and air outlet is respectively connected to the ventilation chamber on the corresponding side. A filter is provided on the front side of the interior of the ventilation duct, and a fan is provided at the front end of the sterilization chamber, and the air inlet side of the fan is connected to the ventilation chambers on the upper and lower sides through a pipe, and the air outlet side is connected to the ventilation chambers on the left and right sides through a pipe.

6. The irradiation sterilization equipment for mushroom spawn according to claim 1, characterized in that: A plurality of partitions are evenly spaced on the conveying surfaces of the first conveyor belt and the second conveyor belt, and the interval between two adjacent partitions forms a limiting path for placing mushroom sticks, and the left and right end surfaces of the partitions are both arc-shaped surfaces.

7. The irradiation sterilization equipment for mushroom spawn according to claim 1 or 6, characterized in that: Several position sensors for detecting materials are evenly spaced apart on the side ends of the first conveyor belt and the second conveyor belt.

8. The sterilization method for irradiation sterilization equipment for mushroom spawn according to claim 3, characterized in that: The following steps are involved: S1. Place the mushroom sticks to be sterilized on the first conveyor belt and transport them to the sterilization chamber. When the mushroom sticks are transported to the front of the rotating plate, the first moving device is activated to push the mushroom sticks into the mushroom stick rack directly behind it. S2: The rotating plate rotates to drive the mushroom stick rack with the mushroom sticks to the bottom of the irradiation device for irradiation sterilization, and then the rotating plate continues to drive the mushroom stick rack to rotate. After rotating through the arc-shaped rack, the mushroom stick rack rotates 180°, and then the rotating plate drives the mushroom stick rack to the bottom of the irradiation device again, and irradiates the other side of the surface for sterilization; S3: The rotating plate drives the sterilized mushroom sticks to rotate to the bottom side, and the second moving device starts to push the mushroom sticks from the mushroom stick rack to the second conveyor belt in front, and is transported out of the sterilization chamber by the second conveyor belt.

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