Unattended granary hydrogen phosphide fumigation device

Abstract

The unattended granary hydrogen phosphide fumigation device comprises a first supporting plate and a second supporting plate, two groups of generating gas tanks are symmetrically arranged between the first supporting plate and the second supporting plate, and heat dissipation assemblies are arranged in the two groups of generating gas tanks and on the surfaces of the two groups of generating gas tanks; the heat dissipation assembly comprises a conveying pipe, the upper end of the conveying pipe is in through connection with a first flow dividing pipe and a second flow dividing pipe, the end, away from the conveying pipe, of the surface of the second flow dividing pipe is in through connection with a heat dissipation plate, and a wavy water guide groove is formed in the heat dissipation plate. Water is conveyed into a second flow dividing pipe, the water entering the second flow dividing pipe flows into a heat dissipation plate, is guided by a wave groove and then flows into a filtering water tank again through a water drainage pipe, and the circulation is carried out, so that rapid heat dissipation of the heat dissipation plate can be realized, heat generated when hydrogen phosphide is generated in the gas generation tank is reduced, and the reaction stability is improved.

Description

Technical Field

[0001] This invention relates to the field of phosphine fumigation technology, specifically to an unattended phosphine fumigation device for grain warehouses. Background Technology

[0002] Phosphine fumigation in grain storage is a widely used method for pest control, utilizing the toxicity of phosphine gas to kill pests in the grain warehouse. Phosphine is a toxic gas with strong toxicity to insects. During fumigation, phosphine is released into the sealed environment of the grain warehouse. The gas can penetrate into all parts of the grain pile. Pests inhale phosphine during respiration, which inhibits their nervous and respiratory systems, ultimately leading to poisoning and death, thus protecting the grain from pests.

[0003] In phosphine fumigation of grain warehouses, most methods use aluminum phosphide hydrolysis to generate phosphine, which is relatively simple and easy to operate. However, existing aluminum phosphide hydrolysis fumigation devices rely on manual addition of aluminum phosphide and water, which is dangerous and cannot accurately control the amount of aluminum phosphide and water added, leading to excessively high or low phosphine concentrations and poor insecticidal effects. Furthermore, the generation of phosphine generates heat, which conventional fumigation devices cannot dissipate in time, causing the reaction system temperature to rise continuously, leading to uncontrolled reaction and difficulty in controlling the gas release rate and quantity, hindering precise fumigation and affecting effective control of grain warehouse pests. Additionally, residues and impurities remain inside the generator after phosphine generation; if not removed promptly, this will affect the accuracy of subsequent phosphine fumigation operations. Therefore, this invention proposes an unattended phosphine fumigation device for grain warehouses. Summary of the Invention

[0004] The purpose of this invention is to provide an unattended phosphine fumigation device for grain warehouses to solve the problems mentioned in the background above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an unattended grain warehouse phosphine fumigation device, comprising a movable base, a box body disposed above the movable base, a drying chamber and a control panel disposed on the surface of the box body, a filter water tank disposed on the lower side of the box body, a water pump disposed on the upper surface of the filter water tank away from the control panel, a first support plate and a second support plate disposed inside the box body, two sets of gas generating tanks symmetrically disposed between the first support plate and the second support plate, and heat dissipation components disposed inside and on the surface of the two sets of gas generating tanks; The heat dissipation assembly includes a delivery pipe, the upper end of which is connected to a first branch pipe and a second branch pipe. The end of the surface of the first branch pipe away from the delivery pipe is connected to the interior of the two sets of gas generating tanks. The end of the surface of the second branch pipe away from the delivery pipe is connected to a heat dissipation plate. The interior of each set of gas generating tanks is provided with a heat dissipation plate. The heat dissipation plate is provided with a corrugated water guide groove. The upper end of the heat dissipation plate is fixedly connected to a sealing cap. The surface of the sealing cap is provided with an exhaust groove. The exhaust grooves above the two sets of gas generating tanks are connected to a gas collecting pipe. The lower end of the heat dissipation plate is connected to a drain pipe.

[0006] Preferably, the surface of the first support plate is symmetrically provided with a fixing groove, a first sliding groove and a second sliding groove, a support block is fixedly installed on the surface of the first support plate, and a switching component for controlling the release of water and aluminum phosphide particles is provided between the first sliding groove and the support block.

[0007] Preferably, the switching assembly includes a rotating shaft, a driven shaft, and several sets of sliders. The rotating shaft rotatably passes through the surface of the support block. Two sets of sliders are fixedly installed on the surface of the rotating shaft. U-shaped slide plates are provided on the lower side of each set of sliders. A rack is provided at the bottom of each U-shaped slide plate. The U-shaped slide plate slides on the surface of the second slide groove. The driven shaft rotates inside the first support plate. A mating rack is fixedly provided on the surface of the second slide groove on the lower side of the U-shaped slide plate. The mating rack meshes with the rack at the bottom of the U-shaped slide plate for transmission. A rocker arm is symmetrically fixedly connected to both ends of the driven shaft. A control groove is provided at both ends of the two sets of rocker arms. A telescopic shaft is provided on the surface of each set of sliders. The telescopic shaft slides on the inner surface of the control groove. The end of the slider surface away from the telescopic shaft slides up and down inside the first slide groove. An upper push rod and a lower push rod are fixedly provided on the surface of the slider.

[0008] Preferably, the surface of the second support plate is provided with a snap-fit ​​groove and a through groove, one end of the second support plate is provided with a snap-fit ​​block, and the surface of the second support plate is provided with a release component for driving and cleaning impurities.

[0009] Preferably, the release assembly includes a motor, a drive shaft, and a limiting plate. The output end of the motor is fixedly connected to a drive shaft. An arc-shaped protrusion is fixedly provided on the end of the drive shaft away from the motor. An arc-shaped mating protrusion is fixedly provided on the end of the drive shaft near the arc-shaped protrusion. The arc-shaped mating protrusion engages with the arc-shaped protrusion. Limiting teeth are fixedly provided on the surface of the arc-shaped mating protrusion. A splined sleeve shaft is slidably connected to the end of the drive shaft away from the arc-shaped mating protrusion. A transmission belt is sleeved on the surface of the splined sleeve shaft.

[0010] Preferably, a push groove is fixedly installed in the middle of the surface of the drive shaft, a drive plate is rotatably sleeved on the surface of the push groove, a return spring is sleeved on one end of the drive shaft surface near the arc-shaped mating protrusion, the limiting plate slides inside the snap-fit ​​groove, a number of compression springs are provided on the surface of the limiting plate, and the limiting plate is slidably connected to the limiting teeth.

[0011] Preferably, the two sets of gas generating tanks are provided with liquid discharge ports and aluminum phosphide discharge ports on both sides. The liquid discharge ports are connected to one end of the first diversion pipe. A first sealing plate is slidably arranged between the liquid discharge ports and the first diversion pipe. A first support spring is arranged on the lower side of the first sealing plate.

[0012] Preferably, a storage chamber is connected through the end of the aluminum phosphide discharge port away from the gas generator. A second sealing plate is slidably disposed between the storage chamber and the aluminum phosphide discharge port, and a second support spring is disposed on the lower side of the second sealing plate.

[0013] Preferably, the upper end of the gas generating tank is provided with a gas release port, and a sealing cap is sealed and slidable on the outer surface of the gas release port. The bottom of the gas generating tank is provided with a purification port and a hole, and a drain pipe is sealed and slidable on the surface of the hole. A rotary sealing pipe is rotatably connected to the surface of the purification port, and the rotary sealing pipe is meshed and driven by the gear rack of the drive plate.

[0014] Preferably, the filter tank is equipped with a filter layer inside to treat and remove impurities and chemical components remaining in the water after the reaction.

[0015] The beneficial effects of this invention are as follows: In this invention, the amount of phosphine gas generated can be controlled simply by controlling the forward and reverse rotation of the motor and the start and stop times, avoiding the hazards caused by manually adding aluminum phosphide and water, reducing the risk factor, and accurately controlling the amount of aluminum phosphide and water added, resulting in better fumigation effect.

[0016] This invention delivers water to the second diversion pipe through a heat dissipation component. The water entering the second diversion pipe flows into the heat dissipation plate, is guided by a wave groove, and then flows back into the filter water tank through a drain pipe. This cycle is repeated to achieve rapid heat dissipation from the heat dissipation plate, reduce the heat generated when phosphine is generated inside the gas generator, and improve reaction stability.

[0017] In this invention, when the motor rotates forward, a switching component is used to enable the two sets of gas generating tanks to intermittently generate phosphine gas, so that the amount of fumigation work in a single operation is completed through the two sets of gas generating tanks, thereby improving the reaction stability. When the motor rotates in reverse, the impurities and unreacted water remaining inside the two sets of gas generating tanks are released in a timely manner, so as to avoid affecting the accuracy of the next fumigation operation and improve the sustainability of the fumigation device. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of an unmanned grain warehouse phosphine fumigation device; Figure 2 This is a schematic diagram of the internal structure of the fumigation device; Figure 3 This is a schematic diagram showing the positional relationship between the first support plate and the second support plate; Figure 4 This is a schematic diagram of the structure of the first and second support plates; Figure 5 This is a schematic diagram of the heat dissipation component structure; Figure 6 This is a schematic diagram of a partial structure of the heat dissipation component; Figure 7 This is a schematic diagram of the heat sink structure; Figure 8 This is a schematic diagram of the switching component structure; Figure 9 This is a schematic diagram of the component structure for release; Figure 10 This is a schematic diagram showing the positional relationship between the limiting teeth and the limiting plate; Figure 11 This is a schematic diagram showing the motion relationship between the drive plate and the rotary sealing tube; In the diagram: 1. Movable base; 2. Housing; 21. Filter water tank; 22. Water pump; 23. Drying chamber; 24. Control panel; 3. First support plate; 31. Fixing groove; 32. First sliding groove; 33. Second sliding groove; 34. Support block; 4. Second support plate; 41. Snap-fit ​​groove; 42. Through groove; 43. Snap-fit ​​block; 5. Release assembly; 51. Motor; 52. Drive shaft; 521. Arc-shaped protrusion; 53. Transmission shaft; 531. Arc-shaped mating protrusion; 532. Limiting tooth; 533. Push groove; 54. Return spring; 55. Splined sleeve shaft; 56. Limiting plate; 561. Compression spring; 57. Drive plate; 58. Transmission belt; 6. Switching assembly; 61. Rotating shaft; 62. U-shaped sliding plate; 63. Driven shaft; 631. Matching rack; 632. Swing rod; 633. Control groove; 64. Slider; 641. Upper push rod; 642. Lower push rod; 7. Gas generator; 71. Liquid discharge port; 711. First sealing plate; 712. First support spring; 72. Aluminum phosphide discharge port; 721. Second sealing plate; 722. Second support spring; 73. Gas release port; 74. Impurity removal port; 75. Rotary sealing tube; 8. Heat dissipation assembly; 81. Conveying pipe; 82. First diversion pipe; 83. Second diversion pipe; 831. Heat dissipation plate; 832. Drain pipe; 833. Sealing cover; 834. Exhaust groove; 9. Storage chamber; 10. Gas collection pipe. Detailed Implementation

[0019] Because phosphine generates heat during fumigation, conventional fumigation devices cannot dissipate this heat in time, causing the temperature of the reaction system to rise continuously, leading to uncontrolled reaction. Furthermore, it is difficult to control the rate and amount of gas release, which is not conducive to achieving precise fumigation and affects the effective control of grain storage pests. In addition, residues and impurities remain inside the generator during phosphine generation. If these are not removed in time, they will affect the accuracy of the next phosphine fumigation operation. Therefore, as Figures 1 to 4 As shown, the present invention proposes an unattended grain warehouse phosphine fumigation device, including a movable base 1, a box 2 arranged above the movable base 1, a drying chamber 23 and a control panel 24 arranged on the surface of the box 2, a filter water tank 21 arranged on the lower side of the box 2, a water pump 22 arranged on the upper surface of the filter water tank 21 away from the control panel 24, a first support plate 3 and a second support plate 4 arranged inside the box 2, two sets of gas generating tanks 7 symmetrically arranged between the first support plate 3 and the second support plate 4, and heat dissipation components 8 arranged inside and on the surface of the two sets of gas generating tanks 7. like Figures 5 to 7 As shown, the heat dissipation assembly 8 includes a delivery pipe 81. The upper end of the delivery pipe 81 is connected to a first branch pipe 82 and a second branch pipe 83. The end of the surface of the first branch pipe 82 away from the delivery pipe 81 is connected to the interior of the two sets of gas generating tanks 7. The end of the surface of the second branch pipe 83 away from the delivery pipe 81 is connected to a heat dissipation plate 831. The interior of the two sets of gas generating tanks 7 is provided with a heat dissipation plate 831. The heat dissipation plate 831 is provided with a corrugated water guide groove. The upper end of the heat dissipation plate 831 is fixedly connected to a sealing cover 833. The surface of the sealing cover 833 is provided with an exhaust groove 834. The surface of the exhaust groove 834 above the two sets of gas generating tanks 7 is connected to a gas collecting pipe 10. The lower end of the heat dissipation plate 831 is connected to a drain pipe 832.

[0020] The surface of the first support plate 3 is symmetrically provided with a fixing groove 31, a first sliding groove 32 and a second sliding groove 33. A support block 34 is fixedly installed on the surface of the first support plate 3. A switching component 6 for controlling the release of water and aluminum phosphide particles is provided between the first sliding groove 32 and the support block 34.

[0021] like Figure 8As shown, the switching component 6 includes a rotating shaft 61, a driven shaft 63, and several sets of sliders 64. The rotating shaft 61 rotatably passes through the surface of the support block 34. Two sets of 611 are fixedly installed on the surface of the rotating shaft 61. U-shaped slide plates 62 are provided on the lower side of each set of 611. A rack is provided at the bottom of the U-shaped slide plate 62. The U-shaped slide plate 62 slides on the surface of the second slide groove 33. The driven shaft 63 rotates inside the first support plate 3. The surface of the second slide groove 33 is fixedly provided with a mating part on the lower side of the U-shaped slide plate 62. The rack 631 meshes with the rack at the bottom of the U-shaped slide plate 62 for transmission. Both ends of the driven shaft 63 are symmetrically fixed with rocker arms 632. Both ends of the two sets of rocker arms 632 are provided with control grooves 633. Several sets of sliders 64 are provided with telescopic shafts on their surfaces. The telescopic shafts slide on the inner surface of the control grooves 633. The end of the slider 64 away from the telescopic shaft slides up and down inside the first slide groove 32. The surface of the slider 64 is fixedly provided with an upper push rod 641 and a lower push rod 642.

[0022] The surface of the second support plate 4 is provided with a snap-fit ​​groove 41 and a through groove 42, one end of the second support plate 4 is provided with a snap-fit ​​block 43, and the surface of the second support plate 4 is provided with a release component 5 for driving and impurity cleaning.

[0023] like Figures 9 to 11 As shown, the release assembly 5 includes a motor 51, a drive shaft 53, and a limiting plate 56. The output end of the motor 51 is fixedly connected to a drive shaft 52. An arc-shaped protrusion 521 is fixedly provided on the end of the drive shaft 52 away from the motor 51. An arc-shaped mating protrusion 531 is fixedly provided on the end of the drive shaft 53 near the arc-shaped protrusion 521. The arc-shaped mating protrusion 531 meshes with the arc-shaped protrusion 521. A limiting tooth 532 is fixedly provided on the surface of the arc-shaped mating protrusion 531. A splined sleeve shaft 55 is slidably connected to the end of the drive shaft 53 away from the arc-shaped mating protrusion 531. A transmission belt 58 is sleeved on the surface of the splined sleeve shaft 55.

[0024] A push groove 533 is fixedly installed in the middle of the surface of the drive shaft 53. A drive plate 57 is rotatably sleeved on the surface of the push groove 533. A return spring 54 is sleeved on one end of the drive shaft 53 near the arc-shaped mating protrusion 531. A limiting plate 56 slides inside the snap-fit ​​groove 41. Several sets of compression springs 561 are provided on the surface of the limiting plate 56. The limiting plate 56 is slidably connected to the limiting tooth 532. Both the limiting plate 56 and the limiting tooth 532 have an arc surface on one side. When the motor 51 rotates forward, the two arc surfaces contact each other, and the limiting plate 56 slides. When the motor 51 rotates in reverse, the two straight surfaces contact each other, and the rotation of the arc-shaped mating protrusion 531 is restricted.

[0025] Two sets of gas generating tanks 7 are provided with liquid discharge ports 71 and aluminum phosphide discharge ports 72 on both sides. The liquid discharge port 71 is connected to one end of the first diversion pipe 82. A first sealing plate 711 is slidably arranged between the liquid discharge port 71 and the first diversion pipe 82. A first support spring 712 is arranged on the lower side of the first sealing plate 711.

[0026] A storage chamber 9 is connected through the end of the aluminum phosphide discharge port 72 away from the gas generator 7. A second sealing plate 721 is slidably arranged between the storage chamber 9 and the aluminum phosphide discharge port 72. A second support spring 722 is arranged on the lower side of the second sealing plate 721.

[0027] The upper end of the gas generating tank 7 is provided with a gas release port 73, and the sealing cover 833 is sealed and slidable on the outer surface of the gas release port 73. The bottom of the gas generating tank 7 is provided with a cleaning port 74 and a hole, and the drain pipe 832 is sealed and slidable on the surface of the hole. The surface of the cleaning port 74 is rotatably connected to a rotating sealing pipe 75, and the rotating sealing pipe 75 is meshed and connected to the drive plate 57 with a gear rack.

[0028] The water tank 21 is equipped with a filter layer and a cooler. The filter layer is used to treat and remove impurities and chemical components remaining in the water after the reaction, and the cooler is used to cool the water.

[0029] Working principle: This fumigation device can be used in conjunction with a circulating fumigation device or independently. When used with a circulating fumigation device, first connect the pipe above the drying chamber 23 of the fumigation device to the circulating system. Arrange gas sampling points in the grain silo, start the circulating fan to circulate the air in the grain silo, and simultaneously turn on the fumigation device to inject the generated phosphine gas into the circulating airflow. Monitor the gas concentration at different locations in the grain silo in real time through the gas sampling device, and adjust the phosphine generation of the fumigation device according to the concentration changes to ensure that the gas concentration reaches and is maintained within the effective fumigation range. Through the circulating fumigation device, the phosphine gas forms a relatively closed circulating system in the grain silo, allowing the gas to circulate continuously inside and outside the grain pile to achieve a more uniform distribution effect. When used alone, the fumigation device is placed directly into the grain silo, and the mechanical ventilation system installed in the grain silo accelerates the diffusion and distribution of phosphine gas within the silo.

[0030] When the fumigation device is in use, the motor 51 in the release assembly 5 is started to rotate alternately in both directions, alternating once for each revolution. This is used to check whether the swing arm 632, the first sealing plate 711, the second sealing plate 721, the sealing cover 833, and the rotating sealing tube 75 are moving normally. After several alternating rotations, the motor 51 is turned off when the swing arm 632 is parallel to the first support plate 3. At this time, the first sealing plate 711 and the second sealing plate 721 are respectively in a blocking state of the first diversion pipe 82 and the storage chamber 9. The sealing cover 833 is pressed on the gas release port 73 by the gravity sealing of the heat dissipation plate 831. The heat dissipation plate 831 contacts the bottom of the gas generating tank 7 to isolate the inside of the gas generating tank 7. The impurity removal port 74 and the pipe opening on the surface of the rotating sealing tube 75 are in a staggered state. At this point, the aluminum phosphide granules are evenly placed inside the two sets of storage chambers 9 to complete the preparation work. When fumigation is required, the water pump 22 is started first to input the water inside the filter water tank 21 into the heat dissipation component 8. Then, the heat dissipation component 8 delivers the water to the first diversion pipe 82 and the second diversion pipe 83. The water entering the second diversion pipe 83 flows into the heat dissipation plate 831. After being guided by the wave groove, it flows back into the filter water tank 21 through the drain pipe 832. This cycle can achieve rapid heat dissipation of the heat dissipation plate 831, reduce the heat generated when phosphine is generated inside the gas generating tank 7, and improve the reaction stability. When the motor 51 starts rotating forward, it drives the drive shaft 52 to rotate. During forward rotation, the arc-shaped protrusion 521 engages with the plane in the arc-shaped mating protrusion 531, causing the drive shaft 52 to rotate synchronously and drive the transmission shaft 53 to rotate. The transmission shaft 53, in turn, drives the spline sleeve shaft 55 to rotate via the spline, which in turn drives the rotating shaft 61 to rotate via the transmission belt 58. The rotation of the rotating shaft 61 drives the 611 to rotate, which controls the U-shaped slide plate 62 to slide back and forth on the surface of the second slide groove 33. When the U-shaped slide plate 62 slides back and forth, it engages with the mating rack 631 on the surface of the driven shaft 63, causing the driven shaft 63 to oscillate back and forth. The oscillation of the driven shaft 63 drives the swing rods 6 at both ends. The 32 swings back and forth around the center of the driven shaft 63. The two swing rods 632 swing synchronously in the same direction, which can control the four sets of sliders 64 to slide up and down in the corresponding four sets of first slide grooves 32. Among them, the sliders 64 on both sides of a single set of gas tank 7 move synchronously. When the two lower push rods 642 press down on the first sealing plate 711 and the second sealing plate 721 respectively, the motor 51 is turned off. At this time, water and aluminum phosphide particles can be released synchronously. However, due to the partition of the heat sink 831, they do not come into contact at this time. The purpose of the partition is to avoid the water flow impact being too large, causing the instantaneous reaction with the aluminum phosphide particles to be too intense. At the same time, the water flow washes onto the surface of the heat sink 831, which can further cool the heat sink 831 in advance. When the water and aluminum phosphide particles reach the single production amount, the motor 51 is started. The swing rod 632 continues to swing to control the upper push rod 641 and the lower push rod 642 to move upward. At this time, the first sealing plate 711 and the second sealing plate 721 are respectively reset upward by the first support spring 712 and the second support spring 722, which seals the first diversion pipe 82 and the storage chamber 9 to stop the feeding. The motor 51 is then turned off again. At the same time, the upward movement of the upper rod 641 will cause the sealing cover 833 to move upward on the surface of the gas release port 73. The upward movement of the sealing cover 833 will cause the heat sink 831 to move synchronously, thereby removing the barrier between the heat sink 831 and the inside of the gas generating tank 7, allowing water to slowly enter the aluminum phosphide particle area from the bottom of the heat sink 831. Since the upward movement distance of the heat sink 831 is small, the opening between it and the bottom of the gas generating tank 7 is small, so the water flow can slowly and evenly react with the aluminum phosphide particles, improving the reaction stability. At this time, the gas release port 73 is connected to the exhaust groove 834, and the phosphine gas inside the gas generating tank 7 can enter the drying chamber 23 through the gas collecting pipe 10. After drying, the phosphine gas release effect is achieved.

[0031] Since the swing arm 632 controls the two sets of gas generating tanks 7 to intermittently generate phosphine gas while swinging, a single fumigation operation can be completed through two sets of gas generating tanks 7. This avoids the drawbacks of excessive aluminum phosphide added to one set of gas generating tanks 7 at a time, which would cause the reaction to be too strong and the generation amount to be difficult to control. Furthermore, by adjusting the interval between the opening and closing of motor 51, the amount of phosphine gas generated can be controlled. When water and aluminum phosphide particles are released, if the closing time of motor 51 is longer, more aluminum phosphide particles will be released, and the amount of phosphine gas generated in a single operation will be greater. If the closing time is shorter, the amount released will be less, and the amount of phosphine gas generated will be less. This time control can be set according to the specific fumigation operation.

[0032] Each time gas is generated inside the two gas tanks 7, the motor 51 controls the swing arm 632 to be parallel to the first support plate 3 once. During this period, the motor 51 reverses direction, causing the arc-shaped protrusion 521 and the arc-shaped mating protrusion 531 to slide into contact. The arc-shaped protrusion 521 no longer engages with the arc-shaped mating protrusion 531, and is simultaneously limited by the limiting plate 56. During the contact of their arc surfaces, the arc-shaped mating protrusion 531 drives the transmission shaft 53 to slide relative to each other. The return spring 54 prevents the sliding transmission... When the drive shaft 53 is reset, the drive shaft 53 can reciprocate during the continuous rotation of the arc-shaped protrusion 521. When the drive shaft 53 slides, the drive plate 57 is controlled to reciprocate synchronously through the push groove 533. The reciprocating sliding of the drive plate 57 controls the reciprocating rotation of the rotating sealing tubes 75 in the two sets of gas generating tanks 7, so that the pipe opening in the rotating sealing tube 75 and the impurity removal port 74 are intermittently connected and closed, thereby releasing the impurities and unreacted water remaining inside the gas generating tank 7 after the reaction, avoiding interference with the next phosphine generation and improving the accuracy of the generation.

[0033] Once the impurities and unreacted water have been completely released, turn off motor 51 to complete a single fumigation operation. For the next operation, motor 51 can be turned on directly to improve the continuity of the fumigation device.

[0034] The embodiments described above merely illustrate implementation methods of the present invention and should not be construed as limiting the scope of the invention patent, nor as imposing any form of limitation on the structure of the present invention. It should be noted that those skilled in the art can make various changes and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. An unattended grain warehouse phosphine fumigation device, comprising a movable base (1), a housing (2) disposed above the movable base (1), a drying chamber (23) and a control panel (24) disposed on the surface of the housing (2), a filter water tank (21) disposed on the lower side of the housing (2), and a water pump (22) disposed on the upper surface of the filter water tank (21) away from the control panel (24), characterized in that: The box (2) is provided with a first support plate (3) and a second support plate (4) inside. Two sets of gas generating tanks (7) are symmetrically arranged between the first support plate (3) and the second support plate (4). Heat dissipation components (8) are provided inside and on the surface of the two sets of gas generating tanks (7). The heat dissipation assembly (8) includes a delivery pipe (81), the upper end of which is connected to a first diversion pipe (82) and a second diversion pipe (83). The end of the surface of the first diversion pipe (82) away from the delivery pipe (81) is connected to the interior of the two sets of gas generating tanks (7). The end of the surface of the second diversion pipe (83) away from the delivery pipe (81) is connected to a heat dissipation plate (831). The interior of the two sets of gas generating tanks (7) is provided with a heat dissipation plate (831). The interior of the heat dissipation plate (831) is provided with a wavy water guide groove. The upper end of the heat dissipation plate (831) is fixedly connected to a sealing cap (833). The surface of the sealing cap (833) is provided with an exhaust groove (834). The surface of the exhaust groove (834) above the two sets of gas generating tanks (7) is connected to a gas collecting pipe (10). The lower end of the heat dissipation plate (831) is connected to a drain pipe (832).

2. The unmanned grain silo phosphine fumigation device according to claim 1, characterized in that: The surface of the first support plate (3) is symmetrically provided with a fixing groove (31), a first sliding groove (32) and a second sliding groove (33). A support block (34) is fixedly installed on the surface of the first support plate (3). A switching component (6) for controlling the release of water and aluminum phosphide particles is provided between the first sliding groove (32) and the support block (34).

3. The unmanned grain warehouse phosphine fumigation device according to claim 2, characterized in that: The switching component (6) includes a rotating shaft (61), a driven shaft (63), and several sets of sliders (64). The rotating shaft (61) rotatably passes through the surface of the support block (34). Two sets (611) are fixedly installed on the surface of the rotating shaft (61). A U-shaped sliding plate (62) is provided on the lower side of each set (611). A rack is provided at the bottom of the U-shaped sliding plate (62). The U-shaped sliding plate (62) slides on the surface of the second slide groove (33). The driven shaft (63) rotates inside the first support plate (3). The surface of the second slide groove (33) is fixedly located on the lower side of the U-shaped sliding plate (62). There is a matching rack (631), which meshes with the bottom rack of the U-shaped slide (62) for transmission. Both ends of the driven shaft (63) are symmetrically fixedly connected with rocker arms (632). Both ends of the two sets of rocker arms (632) are provided with control grooves (633). Several sets of sliders (64) are provided with telescopic shafts on their surfaces. The telescopic shafts slide on the inner surface of the control grooves (633). The end of the slider (64) away from the telescopic shaft slides up and down inside the first slide groove (32). The surface of the slider (64) is fixedly provided with an upper push rod (641) and a lower push rod (642).

4. The unmanned grain warehouse phosphine fumigation device according to claim 1, characterized in that: The surface of the second support plate (4) is provided with a snap-fit ​​groove (41) and a through groove (42), one end of the second support plate (4) is provided with a snap-fit ​​block (43), and the surface of the second support plate (4) is provided with a release component (5) for driving and cleaning impurities.

5. The unmanned grain silo phosphine fumigation device according to claim 4, characterized in that: The release assembly (5) includes a motor (51), a drive shaft (53), and a limiting plate (56). The output end of the motor (51) is fixedly connected to a drive shaft (52). An arc-shaped protrusion (521) is fixedly provided on the end of the drive shaft (52) away from the motor (51). An arc-shaped mating protrusion (531) is fixedly provided on the end of the drive shaft (53) near the arc-shaped protrusion (521). The arc-shaped mating protrusion (531) meshes with the arc-shaped protrusion (521). A limiting tooth (532) is fixedly provided on the surface of the arc-shaped mating protrusion (531). A spline sleeve shaft (55) is slidably connected on the end of the drive shaft (53) away from the arc-shaped mating protrusion (531). A transmission belt (58) is sleeved on the surface of the spline sleeve shaft (55).

6. The unmanned grain silo phosphine fumigation device according to claim 5, characterized in that: A push groove (533) is fixedly installed in the middle of the surface of the drive shaft (53). A drive plate (57) is rotatably sleeved on the surface of the push groove (533). A reset spring (54) is sleeved on one end of the drive shaft (53) near the arc-shaped mating protrusion (531). The limiting plate (56) slides inside the snap-fit ​​groove (41). Several sets of compression springs (561) are provided on the surface of the limiting plate (56). The limiting plate (56) is slidably connected to the limiting tooth (532).

7. The unmanned grain warehouse phosphine fumigation device according to claim 1, characterized in that: The two sets of gas generating tanks (7) are provided with liquid discharge port (71) and aluminum phosphide discharge port (72) on both sides. The liquid discharge port (71) is connected to one end of the first diversion pipe (82). A first sealing plate (711) is slidably arranged between the liquid discharge port (71) and the first diversion pipe (82). A first support spring (712) is arranged on the lower side of the first sealing plate (711).

8. The unmanned grain silo phosphine fumigation device according to claim 7, characterized in that: The surface of the aluminum phosphide discharge port (72) is connected to a storage chamber (9) at the end away from the gas generator (7). A second sealing plate (721) is slidably arranged between the storage chamber (9) and the aluminum phosphide discharge port (72). A second support spring (722) is arranged on the lower side of the second sealing plate (721).

9. The unmanned grain warehouse phosphine fumigation device according to claim 8, characterized in that: The upper end of the gas generating tank (7) is provided with a gas release port (73), and the sealing cover (833) slides on the outer surface of the gas release port (73). The bottom of the gas generating tank (7) is provided with a cleaning port (74) and a hole, and the drain pipe (832) slides on the surface of the hole. The surface of the cleaning port (74) is rotatably connected to a rotating sealing pipe (75), and the rotating sealing pipe (75) is meshed with the gear rack of the drive plate (57) for transmission.

10. The unmanned grain silo phosphine fumigation device according to claim 1, characterized in that: The filter tank (21) is equipped with a filter layer inside, which is used to treat and remove impurities and chemical components remaining in the water after the reaction.

Images