A plasma sterilization device for grain storage

Abstract

The present invention discloses a plasma sterilization device for grain storage. The following scheme is now proposed. It includes a housing, on which a rotating cylinder is rotatably connected. A sieve plate is slidably connected to the rotating cylinder. Telescopic tubes are installed on both sides of the sieve plate. A plasma generator is installed on the housing. A toothed plate is slidably connected to the sieve holes of the sieve plate. A plug is inserted into the sieve plate, and a screw rod is rotatably connected to the plug. In the present invention, by pouring grains into the telescopic tube and slowly leaking them through the sieve plate, the plasma generator blows the plasmaized air into the sieve plate and sprays it out through the air holes, thereby sterilizing the grains. When the sieve plate moves, the toothed plate reciprocates back and forth, thereby pulling the toothed plate to move, facilitating the screening of grains. When the grains are agglomerated and blocked, it is convenient to crush them. The sieve plate drives the plug to move upward, driving the screw rod to move, thereby facilitating the driving of grains into the plug for collection. By turning the handle, the grains are driven to be output outward, facilitating sampling.

Description

Technical Field

[0001] The present invention relates to the technical field of grain engineering, and particularly to a plasma sterilization device for grain storage. Background Art

[0002] After long-term storage of grains, if the environmental humidity is high or the grains are not completely dry, mildew will occur. The mildewed grains will produce toxins, which are highly harmful to the human body and cannot be used for normal consumption. To reduce losses, under the condition that the mildew problem is not serious, the grains will be processed and used as livestock feed.

[0003] Referring to the Chinese invention patent with the publication number: CN113397089B and the name: A plasma grain mildew treatment machine, this invention effectively realizes the full introduction of plasma into the interior of grains, especially the bottom position of the grains in a stacked state, enabling the grains to fully contact the plasma and achieving the purpose of complete sterilization. At the same time, the rotating deep rod can promote the separation between the bonded grain particles, reducing the residue of molds and mildew products.

[0004] However, in the actual use process, the above and similar technical solutions still have some problems:

[0005] 1. When using the deep rod for the spraying operation of plasma gas, the penetration area of the deep rod is limited, and the plasma gas is prone to float, making it difficult to effectively stay at the bottom of the target area for a long time, thereby having an adverse impact on the sterilization effect;

[0006] 2. After the sterilization operation is completed, when sampling and analyzing to evaluate the sterilization effect, there is a problem that it is difficult to obtain samples at different depths at one time, which increases the technical difficulty of accurately judging the sterilization situation;

[0007] 3. During the rotation operation of the deep rod, small clump-like adhesions are easily pushed away, resulting in incomplete crushing treatment and a risk of sterilization blind spots or uneven sterilization effects. Summary of the Invention

[0008] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a plasma sterilization device for grain storage that is easy to crush and has thorough sterilization.

[0009] To achieve the above purpose, the present invention adopts the following technical solutions:

[0010] A plasma sterilization device for grain storage, comprising a housing, a sterilization mechanism is connected to the housing, the sterilization mechanism includes a rotating cylinder, the rotating cylinder is rotatably connected to the housing, a sieve plate is slidably connected to the rotating cylinder, telescopic tubes are installed on both sides of the sieve plate, end plates are installed at the ends of the telescopic tubes, the end plates are fixedly connected to the rotating cylinder, air holes are provided at one end of the sieve plate located inside a pair of telescopic tubes, a plasma generator is installed on the housing, and an output pipe of the plasma generator is installed outside the sieve plate and communicated with the air holes;

[0011] A screening mechanism is connected to the sieve plate, the screening mechanism includes a toothed plate, and the toothed plate is slidably connected to the sieve holes of the sieve plate;

[0012] A sampling mechanism is connected to the sieve plate, the sampling mechanism includes an insertion bar, the insertion bar is inserted into the sieve plate, a screw rod is rotatably connected to the insertion bar, and a material port is provided on the upper side of the insertion bar located inside the telescopic tube.

[0013] Preferably, a driving component is connected to the insertion bar, the driving component includes a second gear, the second gear is rotatably connected to the insertion bar, there are a pair of screw rods, first gears are installed at the ends of the screw rods, both of the pair of first gears are meshed with the second gear, a through groove is provided on the toothed plate, the insertion bar and the toothed plate are movably connected through the through groove, a rack is slidably connected to one of the toothed plates, a spring is installed between the rack and the toothed plate, the teeth of the rack are in the shape of ratchet teeth, and the rack is meshed with the second gear.

[0014] Preferably, a shaking component is connected to the insertion bar, the shaking component includes a sliding cover, the sliding cover is slidably connected to one end of the insertion bar located outside the sieve plate, an insertion shaft is slidably connected to the screw rod, the insertion shaft is movably connected to the insertion bar, the insertion shaft is rotatably connected to the sliding cover, pulleys are installed on the insertion shaft, a belt is wound and connected between the pair of pulleys, and a handle is installed on one of the insertion shafts.

[0015] Preferably, a leakage groove is provided at the bottom of one end of the insertion bar where the sliding cover is located, the sliding cover covers the leakage groove, a cover plate is rotatably connected to the top of the insertion bar, and the cover plate covers above the pair of screw rods.

[0016] Preferably, a shielding plate is slidably connected to the insertion bar at the material port, and a pull rod is slidably connected to the insertion bar, and the pull rod is fixedly connected to the shielding plate.

[0017] Preferably, a moving mechanism is connected to the rotating cylinder, the moving mechanism includes a sliding rod and a lead screw, the rotating cylinder is provided with a sliding rod and a lead screw on both sides of the sieve plate, the lead screw is rotatably connected to the rotating cylinder, a pair of second motors are installed on the rotating cylinder, and the end of the lead screw is installed on the output shaft of the second motor.

[0018] Preferably, a pair of guide plates are installed on both sides of the sieve plate where the rotating cylinder is located. A guide groove is provided on the guide plate. A cross bar is installed at the end of the toothed plate. There are two pairs of toothed plates, and the two pairs of toothed plates are respectively arranged at both ends of the sieve plate. The end of the cross bar extends into the guide groove.

[0019] Preferably, a loosening mechanism is connected to the sieve plate. The loosening mechanism includes a telescopic rod. Telescopic rods are installed on both sides of the sieve plate. The telescopic end of the telescopic rod is fixedly connected to the end plate on the same side. The adjacent two joint rods of the telescopic rod are movably connected. A push block is installed at the end of each joint of the telescopic rod. A spiral groove is provided on the inner wall of each joint of the telescopic rod. A convex block is installed at the outer wall end of the telescopic rod, and the convex block extends into the spiral groove of the adjacent joint.

[0020] Preferably, a feeding mechanism is connected to the outer shell. The feeding mechanism includes a feed hopper and a discharge hopper. The feed hopper and the discharge hopper are respectively installed at the top and bottom of the outer shell. A material pipe and an air pipe are installed on the end plate. Solenoid valves are installed on both the material pipe and the air pipe. The material pipe is communicated with the feed hopper and the discharge hopper respectively through the solenoid valve. A discharge pipe is installed on the outer shell, and the discharge pipe is communicated with the air pipe through the solenoid valve.

[0021] Preferably, a rotating mechanism is connected to the rotating cylinder. The rotating mechanism includes a fixed shaft. The fixed shaft is installed at the end of the rotating cylinder. The fixed shaft is rotatably connected to the outer shell. A third gear is installed on the fixed shaft. A first motor is installed on the outer shell. A fourth gear is installed on the output shaft of the first motor. The third gear meshes with the fourth gear. Four rotating rollers are rotatably connected to the outer shell, and the outer wall of the rotating roller is in rolling contact with the outer wall of the rotating cylinder.

[0022] Compared with the prior art, the present invention provides a plasma sterilization device for grain storage, which has the following beneficial effects:

[0023] 1. For the plasma sterilization device for grain storage, pour the grain into the telescopic pipe, and it slowly leaks through the sieve plate. The plasma generator blows the plasmaized air into the sieve plate and sprays it out through the air holes, so as to sterilize the grain. Start the second motor to drive the sieve plate to move upward. While screening the grain, the sieve plate sprays out the plasmaized gas through the air holes, so that the gas fills each layer of the grain. Start the first motor to drive the fixed shaft and the rotating cylinder to rotate, so as to drive the telescopic pipes at the top and bottom to deflect and exchange positions, so that the sieve plate rotates to the bottom, and the grain will move above the sieve plate and continue to be screened down, so as to facilitate spraying the plasmaized air again, so as to facilitate deep sterilization and ensure the sterilization effect.

[0024] 2. When the sieve plate moves, the toothed plate movement crossbar is driven to move along the guide groove. The guide groove is wavy, which facilitates driving the crossbar to reciprocate back and forth, thereby pulling the toothed plate to move, facilitating the screening of grains. When the grains are caked and blocked, it is convenient to crush them. At the same time, the sieve plate drives the telescopic rod to compress or stretch, driving the convex block to move in the spiral groove, thereby driving the telescopic joint of the telescopic rod to rotate, and then driving the push block to rotate, which is convenient for stirring the grains, making the grains smooth when being screened, and preventing the grains from accumulating and sticking together and being unable to be screened.

[0025] 3. For the plasma sterilization device for grain storage, when the grains enter the leakage trough, the sieve plate drives the insert bar to move upward. When the toothed plate moves back and forth, the rack drives the second gear to move unidirectionally, driving the screw rod to move, which is convenient for driving the grains into the insert bar. Every time the sieve plate drives the insert bar to move upward by a certain distance, the screw rod rotates one circle, so that the grains at the entire depth can enter the insert bar, which is convenient for pulling out the insert bar and opening the cover plate to observe the grains, and then the situation of the grains can be judged. The sampling is comprehensive. By turning the handle, the handle drives the screw rod to rotate, driving the grains to be output outward, which is convenient for sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a perspective view of a plasma sterilization device for grain storage proposed by the present invention;

[0027] Figure 2 is a view of the connection structure of the third gear of the present invention;

[0028] Figure 3 is a view of the connection structure of the rotating roller of the present invention;

[0029] Figure 4 is a view of the connection structure of the rotating cylinder of the present invention;

[0030] Figure 5 is a view of the connection structure of the telescopic tube of the present invention;

[0031] Figure 6 is a view of the connection structure of the guide plate of the present invention;

[0032] Figure 7 is a view of the connection structure of the end plate of the present invention;

[0033] Figure 8 is a view of the connection structure of the sieve plate of the present invention;

[0034] Figure 9 is a view of the sieve plate and the toothed plate of the present invention;

[0035] Figure 10 is a view of the connection structure of the telescopic rod of the present invention;

[0036] Figure 11View of the tooth plate connection structure of the present invention;

[0037] Figure 12 View of the insert connection structure of the present invention;

[0038] Figure 13 View of the rack connection structure of the present invention;

[0039] Figure 14 View of the cover plate connection structure of the present invention;

[0040] Figure 15 View of the sliding cover connection structure of the present invention;

[0041] Figure 16 View of the shielding plate connection structure of the present invention.

[0042] In the figure: 1, outer shell; 2, sterilization mechanism; 21, sieve plate; 22, telescopic tube; 23, plasma generator; 24, rotating cylinder; 25, end plate; 26, material tube; 27, air tube; 28, solenoid valve; 29, air hole; 3, sampling mechanism; 31, shaking assembly; 311, sliding cover; 312, handle; 313, insertion shaft; 314, pulley; 315, belt; 32, insert; 33, through groove; 34, cover plate; 35, screw rod; 36, driving assembly; 361, first gear; 362, second gear; 363, rack; 364, spring; 365, leakage groove; 37, shielding plate; 38, pull rod; 39, material port; 4, discharging mechanism; 41, feeding hopper; 42, discharging hopper; 5, rotating mechanism; 51, rotating roller; 52, third gear; 53, fourth gear; 54, first motor; 55, fixed shaft; 6, moving mechanism; 61, lead screw; 62, second motor; 63, sliding rod; 7, screening mechanism; 71, cross bar; 72, guide plate; 73, guide groove; 74, tooth plate; 8, loosening mechanism; 81, telescopic rod; 82, spiral groove; 83, convex block; 84, pushing block; 9, discharge pipe. Detailed implementation manners

[0043] 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 of the embodiments.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0045] Example 1

[0046] Refer to Figures 1-16 Figures 1-16 , a plasma sterilization device for grain storage, including a housing 1, a sterilization mechanism 2 is connected to the housing 1. The sterilization mechanism 2 includes a rotating cylinder 24, the rotating cylinder 24 is rotatably connected to the housing 1, a sieve plate 21 is slidably connected to the rotating cylinder 24, telescopic tubes 22 are installed on both sides of the sieve plate 21, end plates 25 are installed at the ends of the telescopic tubes 22, the end plates 25 are fixedly connected to the rotating cylinder 24, air holes 29 are provided at one end of the sieve plate 21 located inside a pair of telescopic tubes 22, a plasma generator 23 is installed on the housing 1, and the output pipe of the plasma generator 23 is installed outside the sieve plate 21 and communicated with the air holes 29. The plasma generator 23 ionizes the air, and the air enters the telescopic tubes 22 from the air holes 29, thereby sterilizing the grain.

[0047] In the present invention, a feeding mechanism 4 is connected to the housing 1. The feeding mechanism 4 includes a feeding hopper 41 and a discharging hopper 42. The feeding hopper 41 and the discharging hopper 42 are respectively installed at the top end and the bottom end of the housing 1. A material pipe 26 and an air pipe 27 are installed on the end plate 25. Solenoid valves 28 are installed on both the material pipe 26 and the air pipe 27. The material pipe 26 is communicated with the feeding hopper 41 and the discharging hopper 42 respectively through the solenoid valves 28. A discharge pipe 9 is installed on the housing 1, and the discharge pipe 9 is communicated with the air pipe 27 through the solenoid valve 28, thereby facilitating the feeding and discharging of the grain.

[0048] In the present invention, a rotating mechanism 5 is connected to the rotating cylinder 24. The rotating mechanism 5 includes a fixed shaft 55. The fixed shaft 55 is installed at the end of the rotating cylinder 24. The fixed shaft 55 is rotatably connected to the housing 1. A third gear 52 is installed on the fixed shaft 55. A first motor 54 is installed on the housing 1. A fourth gear 53 is installed on the output shaft of the first motor 54. The third gear 52 meshes with the fourth gear 53. Four rotating rollers 51 are rotatably connected to the housing 1. The outer wall of the rotating rollers 51 rolls against the outer wall of the rotating cylinder 24, thereby facilitating the driving of the telescopic tubes 22 and the grain to flip, facilitating the loosening of the grain, enabling the ionized air to be evenly distributed to each layer of the grain, and thus ensuring the sterilization effect.

[0049] In the present invention, a moving mechanism 6 is connected to the rotating cylinder 24. The moving mechanism 6 includes a slide bar 63 and a lead screw 61. The rotating cylinder 24 is provided with the slide bar 63 and the lead screw 61 on both sides of the sieve plate 21. The lead screw 61 is rotatably connected to the rotating cylinder 24. A pair of second motors 62 are installed on the rotating cylinder 24. The end of the lead screw 61 is installed on the output shaft of the second motor 62, thereby facilitating the adjustment of the position of the sieve plate 21.

[0050] Example 2

[0051] On the basis of Embodiment 1, a plasma sterilization device for grain storage, a screening mechanism 7 is connected to the sieve plate 21. The screening mechanism 7 includes a toothed plate 74. The toothed plate 74 is slidably connected to the sieve holes of the sieve plate 21, so as to facilitate the screening of grains and avoid blockage.

[0052] In the present invention, a pair of guide plates 72 are installed on both sides of the sieve plate 21 where the rotating cylinder 24 is located. The guide plates 72 are provided with guide grooves 73. A cross bar 71 is installed at the end of the toothed plate 74. There are two pairs of toothed plates 74, and the two pairs of toothed plates 74 are respectively arranged at both ends of the sieve plate 21. The end of the cross bar 71 extends into the guide groove 73, so as to facilitate driving the toothed plate 74 to move back and forth.

[0053] In the present invention, a loosening mechanism 8 is connected to the sieve plate 21. The loosening mechanism 8 includes a telescopic rod 81. The telescopic rods 81 are installed on both sides of the sieve plate 21. The telescopic ends of the telescopic rods 81 are fixedly connected to the end plates 25 on the same side. The adjacent two joint rods of the telescopic rod 81 are movably connected. A push block 84 is installed at each end of each joint of the telescopic rod 81. A spiral groove 82 is provided on the inner wall of each joint of the telescopic rod 81. A convex block 83 is installed at the end of the outer wall of the telescopic rod 81. The convex block 83 extends into the spiral groove 82 of the adjacent joint, so as to facilitate the falling of grains.

[0054] Embodiment Three

[0055] On the basis of Embodiment 2, a plasma sterilization device for grain storage, a sampling mechanism 3 is connected to the sieve plate 21. The sampling mechanism 3 includes an insertion strip 32. The insertion strip 32 is inserted into the sieve plate 21. A spiral rod 35 is rotatably connected to the insertion strip 32. A material port 39 is provided on the upper side of the insertion strip 32 located inside the telescopic tube 22, which is convenient for taking out grains through the spiral rod 35.

[0056] In the present invention, a driving assembly 36 is connected to the insertion strip 32. The driving assembly 36 includes a second gear 362. The second gear 362 is rotatably connected to the insertion strip 32. There are a pair of spiral rods 35. The ends of the spiral rods 35 are installed with first gears 361. Both pairs of first gears 361 are meshed with the second gear 362. A through groove 33 is provided on the toothed plate 74. The insertion strip 32 is movably connected to the toothed plate 74 through the through groove 33. A rack 363 is slidably connected to one of the toothed plates 74. A spring 364 is installed between the rack 363 and the toothed plate 74. The teeth of the rack 363 are in the shape of ratchet teeth. The rack 363 is meshed with the second gear 362, so as to facilitate driving the spiral rod 35 to rotate and taking out grains at different depths.

[0057] In the present invention, a shaking assembly 31 is connected to the cutting slip 32. The shaking assembly 31 includes a sliding cover 311. One end of the cutting slip 32 located outside the sieve plate 21 is slidably connected to the sliding cover 311. A plug shaft 313 is slidably connected to the screw rod 35. The plug shaft 313 is movably connected to the cutting slip 32. The plug shaft 313 is rotatably connected to the sliding cover 311. A pulley 314 is installed on the plug shaft 313. A belt 315 is wound and connected between a pair of pulleys 314. A handle 312 is installed on one of the plug shafts 313. Thus, when the handle 312 is rotated, it is convenient to take out the grains.

[0058] In the present invention, a leakage groove 365 is provided at the bottom of one end of the cutting slip 32 where the sliding cover 311 is located. The sliding cover 311 shields the leakage groove 365. The top end of the cutting slip 32 is rotatably connected to a cover plate 34. The cover plate 34 shields the upper part of a pair of screw rods 35. The cutting slip 32 is pulled out and the cover plate 34 is opened, which is convenient for observing the grains on each layer.

[0059] In the present invention, a shielding plate 37 is slidably connected to the cutting slip 32 at the material inlet 39. A pull rod 38 is slidably connected to the cutting slip 32. The pull rod 38 is fixedly connected to the shielding plate 37. Thus, it is convenient to control whether to take samples.

[0060] Working principle: Pour the grains into the internal part of the feed hopper 41. Start the solenoid valve 28 on the top material pipe 26. The grains inside the feed hopper 41 will enter the telescopic pipe 22 through the solenoid valve 28 and the material pipe 26, and slowly leak down through the sieve plate 21. At this time, start the plasma generator 23. External air is sucked in and ionized by the plasma generator 23. The ionized air is blown into the sieve plate 21 and ejected through the air holes 29, thereby sterilizing the grains. Start the second motor 62. The second motor 62 drives the lead screw 61 to rotate, thereby driving the sieve plate 21 to move upward. The sieve plate 21 slides along the slide bar 63. When the sieve plate 21 moves, the sieve plate 21 sieves down the grains while ejecting the ionized gas through the air holes 29, so that the gas fills each layer of the grains. Start the solenoid valve 28 on the top air pipe 27. The excess gas can be discharged from the top air pipe 27 and the discharge pipe 9. After the grains are filled, the sieve plate 21 moves to the top, and the solenoid valve 28 at the top is closed, thereby sealing the telescopic pipe 22 and the air pipe 27. After waiting for a period of time, start the first motor 54. The first motor 54 drives the fourth gear 53, thereby driving the third gear 52 to rotate, driving the fixed shaft 55 and the rotating cylinder 24 to rotate, thereby driving the telescopic pipes 22 at the top and bottom to deflect and exchange positions, so that the sieve plate 21 rotates to the bottom, and the grains will move above the sieve plate 21 and continue to sieve down, so as to facilitate spraying the ionized air again, so as to facilitate deep sterilization and ensure the sterilization effect. Start the solenoid valve 28 on the bottom material pipe 26, so as to facilitate the grains to be discharged through the material pipe 26 and the discharge hopper 42;

[0061] When the sieve plate 21 moves, the sieve plate 21 drives the toothed plate 74 to move, thereby driving the cross bar 71 to move. The cross bar 71 moves along the guide groove 73, and the guide groove 73 is wavy, which facilitates driving the cross bar 71 to reciprocate back and forth, thereby pulling the toothed plate 74 to move, facilitating the screening of grains. When the grains are agglomerated and blocked, it is convenient to crush them. At the same time, the sieve plate 21 drives the telescopic rod 81 to compress or stretch. When the telescopic section of the telescopic rod 81 moves, it drives the convex block 83 to move in the spiral groove 82, thereby driving the telescopic section of the telescopic rod 81 to rotate, and then driving the push block 84 to rotate, which facilitates stirring the grains, making the grains smooth when being screened, and preventing the grains from accumulating and sticking together and being unable to be screened;

[0062] After the grains are stored for a period of time and it is necessary to take a sample of the grains for observation, push the pull rod 38. The pull rod 38 drives the shielding plate 37, so that the leakage groove 365 is exposed, and the grains can enter the leakage groove 365. The sieve plate 21 drives the insert 32 to move upward. When the toothed plate 74 moves back and forth, the rack 363 at the bottom of the toothed plate 74 moves. The teeth on the rack 363 are spiny teeth. Under the action of the spring 364, the rack 363 drives the second gear 362 to move unidirectionally, thereby driving a pair of first gears 361 and the screw rod 35 to move, which facilitates driving the grains into the insert 32. Every time the sieve plate 21 drives the insert 32 to move upward by a certain distance, the screw rod 35 rotates one circle, so that the grains at the entire depth can enter the insert 32, which facilitates pulling out the insert 32, opening the cover plate 34 to observe the grains, and then the situation of the grains can be judged. The sampling is comprehensive. During the whole process of inserting the insert 32, pull the sliding cover 311 outward, thereby pulling the insert shaft 313 to slide outward, exposing the leakage groove 365. Rotate the handle 312, and the handle 312 drives the insert shaft 313 to rotate. Under the action of the belt pulley 314 and the belt 315, a pair of insert shafts 313 rotate, thereby driving a pair of screw rods 35 to rotate, driving the grains to be output outward, and the grains leak out from the leakage groove 365, which is convenient for sampling and the operation is convenient.

[0063] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A plasma sterilization device for grain storage, comprising a housing (1), and a sterilization mechanism (2) is connected to the housing (1), characterized in that: The sterilization mechanism (2) includes a rotating cylinder (24). The rotating cylinder (24) is rotatably connected to the outer shell (1). A sieve plate (21) is slidably connected to the rotating cylinder (24). Expansion tubes (22) are installed on both sides of the sieve plate (21). End plates (25) are installed at the ends of the expansion tubes (22). The end plates (25) are fixedly connected to the rotating cylinder (24). Air holes (29) are provided at one end of the sieve plate (21) located inside a pair of expansion tubes (22). A plasma generator (23) is installed on the outer shell (1). The output pipe of the plasma generator (23) is installed outside the sieve plate (21) and communicates with the air holes (29). A screening mechanism (7) is connected to the sieve plate (21). The screening mechanism (7) includes a toothed plate (74). The toothed plate (74) is slidably connected to the sieve holes of the sieve plate (21). A pair of guide plates (72) are installed on both sides of the rotating cylinder (24) where the sieve plate (21) is located. Guide grooves (73) are provided on the guide plates (72). Cross bars (71) are installed at the ends of the toothed plate (74). There are two pairs of toothed plates (74). The two pairs of toothed plates (74) are respectively arranged at both ends of the sieve plate (21). The ends of the cross bars (71) extend into the guide grooves (73). A sampling mechanism (3) is connected to the sieve plate (21). The sampling mechanism (3) includes an insertion strip (32). The insertion strip (32) is inserted into the sieve plate (21). A screw rod (35) is rotatably connected to the insertion strip (32). A material inlet (39) is provided on the upper side of the insertion strip (32) located inside the expansion tube (22).

2. The plasma sterilization device for grain storage according to claim 1, characterized in that, A driving assembly (36) is connected to the insertion strip (32). The driving assembly (36) includes a second gear (362). The second gear (362) is rotatably connected to the insertion strip (32). There are a pair of screw rods (35). First gears (361) are installed at the ends of the screw rods (35). Both pairs of first gears (361) are meshed with the second gear (362). A through groove (33) is provided on the toothed plate (74). The insertion strip (32) is movably connected to the toothed plate (74) through the through groove (33). A rack (363) is slidably connected to one of the toothed plates (74). A spring (364) is installed between the rack (363) and the toothed plate (74). The teeth of the rack (363) are in the shape of ratchet teeth. The rack (363) is meshed with the second gear (362).

3. The plasma sterilization device for grain storage according to claim 1, characterized in that, A shaking component (31) is connected to the cutting strip (32). The shaking component (31) includes a sliding cover (311). One end of the cutting strip (32) located outside the sieve plate (21) is slidably connected to the sliding cover (311). A plug shaft (313) is slidably connected to the screw rod (35). The plug shaft (313) is movably connected to the cutting strip (32). The plug shaft (313) is rotatably connected to the sliding cover (311). A pulley (314) is installed on the plug shaft (313). A belt (315) is wound and connected between a pair of the pulleys (314). A handle (312) is installed on one of the plug shafts (313).

4. A plasma sterilization device for grain storage according to claim 3, characterized in that, A leakage groove (365) is provided at the bottom of one end of the cutting strip (32) located at the sliding cover (311). The sliding cover (311) shields the leakage groove (365). The top end of the cutting strip (32) is rotatably connected to a cover plate (34). The cover plate (34) shields above a pair of screw rods (35).

5. A plasma sterilization device for grain storage according to claim 4, characterized in that, A shielding plate (37) is slidably connected to the cutting strip (32) at the material inlet (39). A pull rod (38) is slidably connected to the cutting strip (32). The pull rod (38) is fixedly connected to the shielding plate (37).

6. The plasma sterilization device for grain storage according to claim 1, characterized in that, A moving mechanism (6) is connected to the rotating cylinder (24). The moving mechanism (6) includes a slide rod (63) and a lead screw (61). Slide rods (63) and lead screws (61) are installed on both sides of the rotating cylinder (24) located at the sieve plate (21). The lead screw (61) is rotatably connected to the rotating cylinder (24). A pair of second motors (62) are installed on the rotating cylinder (24). The end of the lead screw (61) is installed on the output shaft of the second motor (62).

7. A plasma sterilization device for grain storage according to claim 1, characterized in that, A loosening mechanism (8) is connected to the sieve plate (21). The loosening mechanism (8) includes a telescopic rod (81). Telescopic rods (81) are installed on both sides of the sieve plate (21). The telescopic end of the telescopic rod (81) is fixedly connected to the end plate (25) on the same side. Adjacent two joint rods of the telescopic rod (81) are movably connected. A push block (84) is installed at the end of each section of the telescopic rod (81). A spiral groove (82) is provided on the inner wall of each section of the telescopic rod (81). A convex block (83) is installed at the outer wall end of the telescopic rod (81). The convex block (83) extends into the spiral groove (82) of the adjacent section.

8. A plasma sterilization device for grain storage according to claim 1, characterized in that, A feeding mechanism (4) is connected to the outer shell (1). The feeding mechanism (4) includes a feeding hopper (41) and a discharging hopper (42). The feeding hopper (41) and the discharging hopper (42) are respectively installed at the top end and the bottom end of the outer shell (1). A material pipe (26) and an air pipe (27) are installed on the end plate (25). Solenoid valves (28) are installed on both the material pipe (26) and the air pipe (27). The material pipe (26) is communicated with the feeding hopper (41) and the discharging hopper (42) respectively through the solenoid valve (28). A discharge pipe (9) is installed on the outer shell (1). The discharge pipe (9) is communicated with the air pipe (27) through the solenoid valve (28).

9. A plasma sterilization device for grain storage according to claim 1, characterized in that, A rotating mechanism (5) is connected to the rotating cylinder (24). The rotating mechanism (5) includes a fixed shaft (55). The end of the rotating cylinder (24) is provided with the fixed shaft (55). The fixed shaft (55) is rotatably connected to the housing (1). A third gear (52) is mounted on the fixed shaft (55). A first motor (54) is mounted on the housing (1). A fourth gear (53) is mounted on the output shaft of the first motor (54). The third gear (52) meshes with the fourth gear (53). Four rotating rollers (51) are rotatably connected to the housing (1). The outer wall of the rotating roller (51) is in rolling contact with the outer wall of the rotating cylinder (24).

Images