A grain storage silo fumigation duct system

Abstract

The application discloses a kind of grain storage warehouse fumigation pipeline systems, including grain storage warehouse, circulation fumigation pipeline assembly, air conditioning valve assembly, circulation fan and aluminium phosphide drug release mechanism, circulation fumigation pipeline assembly is installed in the outer wall of grain storage warehouse, circulation fumigation pipeline assembly is symmetrically provided with ventilation ground cage mouth below, air conditioning valve assembly and circulation fan are connected with circulation fumigation pipeline assembly, aluminium phosphide drug release mechanism includes placing cylinder and the medicine delivery assembly for the uniform delivery of aluminium phosphide tablet, medicine delivery assembly rotation is arranged in the inner chamber of placing cylinder, medicine delivery assembly includes rotating disc and the aluminium phosphide placement assembly for placing aluminium phosphide tablet.The application can effectively carry out phosphine circulation fumigation insecticidal treatment to the grain in grain storage warehouse by circulation fumigation pipeline assembly cooperation air conditioning valve assembly, circulation fan and aluminium phosphide drug release mechanism.

Description

Technical Field

[0001] This invention relates to the field of grain storage circulation system technology, and in particular to a grain storage fumigation pipeline system. Background Technology

[0002] With the continuous expansion of grain production and the increasing awareness of grain quality and safety, grain storage equipment plays an increasingly important role in agricultural production. In recent years, circulating fumigation technology, nitrogen modified atmosphere, and carbon dioxide modified atmosphere technologies have been increasingly used in the traditional grain industry, laying a solid foundation for scientific and green grain storage. However, each technology operates independently during the grain storage process without integration, resulting in messy piping in grain silos, increased enterprise management costs, and complex systems. Currently, most technologies use manual dosing to apply aluminum phosphide tablets, a cumbersome process; aluminum phosphide tablets are highly toxic, and manual dosing also increases the risk of human contact with them.

[0003] A search revealed that invention patent document CN102524383B discloses a grain silo recirculation fumigation system and method, comprising at least one set of recirculation devices, each including a return pipe, a recirculation fan, a gas distribution box, and a ground cage. The top of the return pipe is positioned above the grain surface, and the lower part of the return pipe is connected to one end of the recirculation fan. The other end of the recirculation fan is connected to a first external vent via a first valve and to the gas distribution box via a third valve. The gas distribution box is connected to a second external vent via a second valve. The ground cage is positioned at the bottom of the grain silo and is connected to the gas distribution box.

[0004] The aforementioned circulating fumigation system has a relatively simple distribution of circulating pipes inside the warehouse, which cannot achieve the integration of multiple controlled atmosphere technologies and has low insecticidal efficiency. The aforementioned circulating fumigation method for grain warehouses involves injecting pesticides into the ventilation openings, which is a rather cumbersome process. Summary of the Invention

[0005] The purpose of this invention is to provide a grain storage silo fumigation pipeline system that can regulate the intake of carbon dioxide and nitrogen through a controlled atmosphere valve assembly, a circulating fan, and a ventilation cage, integrating multiple controlled atmosphere technologies, and working with a circulating fumigation pipeline assembly and an aluminum phosphide dispensing mechanism to perform circulating fumigation and pest control treatment on the grain in the grain storage silo.

[0006] The present invention adopts the following technical solution: A grain storage silo fumigation pipeline system includes a grain storage silo, a circulating fumigation pipeline assembly, a controlled atmosphere valve assembly, a circulating fan, and an aluminum phosphide dispensing mechanism. The circulating fumigation pipeline assembly is installed on the outer wall of the grain storage silo. Ventilation cages are symmetrically arranged below the circulating fumigation pipeline assembly. The ventilation cages are installed on the ground and communicate with the interior of the grain storage silo. The aluminum phosphide dispensing mechanism is located on the surface of the grain pile inside the grain storage silo. The controlled atmosphere valve assembly and the circulating fan are both connected to the circulating fumigation pipeline assembly. The aluminum phosphide dispensing mechanism includes a placement cylinder and a dispensing component for uniformly dispensing aluminum phosphide tablets. The dispensing component is rotatably disposed inside the placement cylinder. The dosing assembly includes a rotating disc and an aluminum phosphide placement assembly for placing aluminum phosphide tablets.

[0007] Optionally, the circulating fumigation duct assembly includes two vertically arranged circulating ducts I, one horizontally arranged circulating duct II, one vertically arranged circulating duct III, one horizontally arranged circulating duct IV, one vertically arranged circulating duct V, one horizontally arranged circulating duct VI, and one vertically arranged circulating duct VII, all connected to each other.

[0008] Optionally, the controlled atmosphere valve assembly includes valve one, valve two, valve three, valve four, valve five, valve six, and valve seven.

[0009] Optionally, the lower end of the circulation pipe three is connected to a nitrogen return air pipe, the lower end of the circulation pipe five is connected to a nitrogen inlet pipe, the lower end of the circulation pipe seven is connected to a carbon dioxide inlet pipe, the upper end of the circulation pipe five penetrates the side wall of the grain storage silo and communicates with the inner cavity of the grain storage silo, and the upper opening of the circulation pipe five is located 20 centimeters above the surface of the grain pile.

[0010] Optionally, several inclined slide rails are fixedly arranged in a circle on the circumference of the placement cylinder. A dropping port is opened on the circumference of the placement cylinder at a position corresponding to the upper end of the slide rail. The slide rail communicates with the inner cavity of the placement cylinder through the dropping port. A horizontal medicine placement cylinder is fixedly installed at the lower end of the slide rail. A detachable medicine placement frame is placed inside the medicine placement cylinder. A matching cover plate is installed above the slide rail. A perforated plate fixed to the cover plate is installed above the medicine placement cylinder.

[0011] Optionally, a groove communicating with the dispensing port is provided on the circumferential surface of the placement cylinder at the upper end of the dispensing port. A sealing plate for sealing the dispensing port is slidably arranged in the groove. An inclined surface is provided on the lower end of the sealing plate. Compression springs are symmetrically fixed at the upper end of the sealing plate and are fixed to the placement cylinder.

[0012] Optionally, a baffle is fixedly installed on the lower surface of the cover plate near the perforated plate, and a rotating plate is installed below the baffle. Both the baffle and the rotating plate are vertically arranged. The rotating plate rotates in conjunction with the slide rail. The upper end surface of the rotating plate rotates on the arc surface below the baffle, and the lower end surface of the rotating plate is set as an inclined surface. The inclination angle of the inclined surface is adapted to the slide rail.

[0013] Optionally, a support plate is provided below the placement cylinder, the support plate and the placement cylinder are on the same horizontal plane, an insertion rod is fixedly provided on the lower surface of the support plate, a support rod is fixedly provided on the upper surface of the support plate, a motor frame is fixedly provided on the lower surface of the placement cylinder, the motor frame is fixed to the support rod, and a drive motor is fixedly installed inside the motor frame.

[0014] Optionally, the rotating disk is rotatably mounted inside the placement cylinder. The output shaft of the drive motor passes through the lower end face of the placement cylinder and is fixed to the rotating disk. The upper surface of the rotating disk is provided with an electric push rod and a push rod. The push rod consists of a vertically arranged connecting plate, a symmetrically arranged push rod one, an arc-shaped rod, and a push rod two. The connecting plate is fixed to the output end of the electric push rod. The upper surface of the rotating disk is symmetrically provided with grooves. The protrusion below the connecting plate slides in the grooves. The diameter of the arc-shaped rod is adapted to the diameter of the aluminum phosphide tablet. The distance between the two push rods two is also adapted to the diameter of the aluminum phosphide tablet. Furthermore, the outer end of the push rod two is provided with an inclined surface, and the thickness of the push rod two is adapted to the thickness of the aluminum phosphide tablet.

[0015] Optionally, the aluminum phosphide placement assembly includes a dispensing cartridge and a second sealing cap. The second sealing cap is located at the upper end of the dispensing cartridge and is threadedly fitted. A pressure spring is fixedly installed on the inner surface of the second sealing cap. A pressure plate that slides in the inner cavity of the dispensing cartridge is fixedly installed on the lower end face of the pressure spring. An arc-shaped through groove is opened on the circumferential surface below the dispensing cartridge. The height of the through groove is adapted to the thickness of the aluminum phosphide tablet. A threaded groove is opened on the upper surface of the rotating disk. The lower end of the dispensing cartridge is threadedly fitted with the threaded groove.

[0016] In summary, the present invention has the following beneficial effects: 1. In this invention, the intake state of carbon dioxide and nitrogen is adjusted by a controlled atmosphere valve assembly, a circulating fan and a ventilation cage opening, and combined with a circulating fumigation pipe assembly and an aluminum phosphide dispensing mechanism to perform circulating fumigation and insecticidal treatment on the grain in the grain storage silo. The integration of multiple controlled atmosphere technologies greatly improves the insecticidal efficiency. 2. In this invention, the gas in the grain storage silo can be effectively converted by the gas control valve assembly, the circulating fan, the circulating fumigation pipe assembly and the ventilation cage opening, so that the carbon dioxide in the grain storage silo is evenly distributed in circulation. 3. In this invention, nitrogen is drawn and nitrogen is added through nitrogen return pipe and nitrogen inlet pipe, realizing a circulation mode of drawing air from the ventilation cage opening and adding nitrogen to the grain surface; 4. In this invention, aluminum phosphide tablets are evenly placed on the surface of the grain pile through an aluminum phosphide dispensing mechanism, and the aluminum phosphide tablets do not come into direct contact with the grain, thus eliminating the tedious process of manual dispensing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the circulating fumigation pipe assembly of the present invention; Figure 3 This is a schematic diagram of the aluminum phosphide dispensing mechanism of the present invention; Figure 4 This is a schematic diagram of the drug delivery assembly of the present invention; Figure 5 This is a schematic diagram of the rotating disk of the present invention; Figure 6 This is a schematic diagram of the structure of the push rod of the present invention; Figure 7 This is a schematic diagram of the aluminum phosphide placement assembly of the present invention; Figure 8 This is a cross-sectional view of the aluminum phosphide placement assembly of the present invention; Figure 9 This is a cross-sectional view of the aluminum phosphide dispensing mechanism of the present invention; Figure 10 In this invention Figure 9 A magnified view of the details at point A; Figure 11 In this invention Figure 9 A magnified view of the details at point B; Figure 12 In this invention Figure 9 A magnified view of the details at point C.

[0018] In the diagram: 1. Grain storage silo; 2. Ventilation cage opening; 3. Circulating fumigation duct assembly; 31. Circulating pipe one; 32. Circulating pipe two; 33. Circulating pipe three; 331. Nitrogen return air duct; 34. Circulating pipe four; 35. Circulating pipe five; 351. Nitrogen inlet duct; 36. Circulating pipe six; 37. Circulating pipe seven; 371. Carbon dioxide inlet duct; 4. Atmosphere control valve assembly; 41. Valve one; 42. Valve two; 43. Valve three; 44. Valve four; 45. Valve five; 46. Valve six; 47. Valve seven; 5. Circulating fan; 6. Aluminum phosphide dispensing mechanism; 61. Placement cylinder; 611. Sealing cap one; 612. Groove; 613. Dropper opening; 62. Slide rail; 621. Dropper cartridge; 622. Dropper frame; 63. Cover plate; 631. Perforated plate; 632. Baffle; 633. Rotating plate; 64. Sealing plate; 641. Compression spring; 65. Motor frame; 651. Drive motor; 7. Support plate; 71. Insert rod; 72. Support rod; 81. Rotating disk; 811. Slide groove; 812. Threaded groove; 82. Electric push rod; 83. Dropper rod; 831. Connecting plate; 832. Pusher one; 833. Arc rod; 834. Pusher two; 9. Aluminum phosphide placement assembly; 91. Dropper cartridge; 911. Through groove; 92. Sealing cap two; 93. Pressure spring; 94. Pressure plate; 95. Aluminum phosphide tablet. Detailed Implementation

[0019] The principles and spirit of the present invention will be explained in detail below with reference to several representative embodiments.

[0020] Please see Figure 1-12 The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figure 1-3 As shown, a grain storage silo fumigation pipeline system includes a grain storage silo 1, a circulating fumigation pipeline assembly 3, a controlled atmosphere valve assembly 4, a circulating fan 5, and an aluminum phosphide dispensing mechanism 6. The circulating fumigation pipeline assembly 3 is installed on the outer wall of the grain storage silo 1. Ventilation cage openings 2 are symmetrically arranged below the circulating fumigation pipeline assembly 3. The ventilation cage openings 2 are installed on the ground and communicate with the interior of the grain storage silo 1. An exhaust mechanism connected to the ventilation cage openings 2 is installed inside the grain storage silo 1. The aluminum phosphide application mechanism 6 is set on the surface of the grain pile inside the grain storage silo 1, and uses the method of applying pesticide to the grain surface to carry out phosphine fumigation and insecticidal treatment on the grain inside the grain storage silo 1. The controlled atmosphere valve assembly 4 and the circulating fan 5 are both connected to the circulating fumigation pipe assembly 3. The intake state of carbon dioxide and nitrogen is adjusted by the controlled atmosphere valve assembly 4, the circulating fan 5 and the ventilation cage 2. Together with the aluminum phosphide dispensing mechanism 6, the grain in the grain storage silo 1 is subjected to circulating fumigation and insecticidal treatment.

[0021] The ventilation cage opening 2, exhaust mechanism and circulating fan 5 mentioned above are all existing technologies and will not be drawn and described in detail here.

[0022] In this embodiment, aluminum phosphide tablets 95 are evenly distributed on the surface of the grain pile by the aluminum phosphide dispensing mechanism 6, and the aluminum phosphide tablets 95 do not come into direct contact with the grain. After the aluminum phosphide tablets 95 come into contact with the humid air in the grain storage silo 1, they can generate phosphine gas for insecticidal treatment.

[0023] like Figure 2 As shown, in this embodiment, the circulating fumigation pipe assembly 3 includes two vertically arranged circulating pipes 31, one horizontally arranged circulating pipe 32, one vertically arranged circulating pipe 33, one horizontally arranged circulating pipe 34, one vertically arranged circulating pipe 35, one horizontally arranged circulating pipe 36, and one vertically arranged circulating pipe 37. All of the above circulating pipes are stainless steel anti-corrosion pipes, and the above circulating pipes are interconnected.

[0024] like Figure 2 As shown, in this embodiment, the connection method of the above-mentioned circulating pipe is specifically as follows: Both ends of circulation duct 2 32 are connected to the upper ends of circulation duct 1 31 on both sides. The lower end of circulation duct 1 31 is connected to the ventilation vent 2 below. Circulation duct 2 32 is connected to circulation duct 3 33. The left end of circulation duct 4 34 is connected to circulation duct 3 33. The right end of circulation duct 4 34 is connected to circulation duct 5 35. The left end of circulation duct 6 36 is connected to circulation duct 3 33. The right end of circulation duct 6 36 is connected to circulation duct 5 35. The upper end of circulation duct 7 37 is connected to circulation duct 4 34. Circulation fan 5 is set between circulation duct 4 34 and circulation duct 6 36. The upper air outlet of circulation fan 5 is connected to circulation duct 7 37. The lower air outlet of circulation fan 5 is connected to circulation duct 6 36.

[0025] like Figure 2 As shown, in this embodiment, the lower end of the circulation pipe 33 is connected to the nitrogen return air pipe 331, the lower end of the circulation pipe 5 35 is connected to the nitrogen inlet pipe 351, and the lower end of the circulation pipe 7 37 is connected to the carbon dioxide inlet pipe 371.

[0026] like Figure 2 As shown, in this embodiment, the upper end of the circulating pipe 35 penetrates the side wall of the grain storage silo 1 and communicates with the inner cavity of the grain storage silo 1. The upper opening of the circulating pipe 35 is located 20 centimeters above the surface of the grain pile.

[0027] like Figure 2As shown, in this embodiment, the gas-controlled valve assembly 4 includes valve one 41, valve two 42, valve three 43, valve four 44, valve five 45, valve six 46 and valve seven 47, all of which are butterfly valves.

[0028] like Figure 2 As shown, in this embodiment, the specific connection method between the valve and the circulating pipeline is as follows: Valve 41 is installed on the pipe on the left side of the circulation pipe 34 and is connected to the circulation pipe 34 to control the connection between the circulation pipe 34 and the circulation pipe 33. Valve 2 42 is installed on the right side of the circulation pipe 4 34 to control the connection between circulation pipe 4 34 and circulation pipe 5 35. Valve 3 43 and valve 44 are both installed on the circulation pipe 6 36 and are connected to the circulation pipe 6 36. Valve 3 43 is used to control the connection between the circulation fan 5 and the circulation pipe 3 33, and valve 44 is used to control the connection between the circulation fan 5 and the circulation pipe 5 35. Valve 45 is installed on and connected to the circulation pipe 33 to control the connection between the circulation pipe 33 and the nitrogen return air pipe 331. Valve 646 is installed on and connected to the circulation pipe 737 to control the connection between the circulation pipe 737 and the carbon dioxide intake pipe 371. Valve 747 is installed on and connected to the circulation pipe 535 to control the connection between the circulation pipe 535 and the nitrogen inlet pipe 351.

[0029] In this embodiment, the lower end of the nitrogen return air pipe 331 is connected to the gas collection mechanism of the grain warehouse circulation system, the lower end of the nitrogen inlet pipe 351 is connected to the nitrogen generator for nitrogen filling, and the lower end of the carbon dioxide inlet pipe 371 is connected to the carbon dioxide production device. The gas collection mechanism of the grain warehouse circulation system, the nitrogen generator, and the carbon dioxide production device are all prior art and will not be drawn or described in detail here.

[0030] During the controlled atmosphere insecticide process, carbon dioxide gas is first injected to quickly reduce the oxygen concentration in grain storage 1. After the carbon dioxide forms a stable low-oxygen environment, nitrogen gas is then injected to achieve uniform oxygen control in grain storage 1. When filling with carbon dioxide, open valve 1 41, valve 6 46 and valve 7 47, and close valve 2 42, valve 3 43, valve 44, valve 5 45 and the circulating fan 5. The gas is injected from the carbon dioxide inlet pipe 371, and enters the lower part of the storage room of grain silo 1 through valve 6 46, valve 1 41, the external circulation pipe and the ventilation cage 2. At this time, the air in the upper part of the storage room of grain silo 1 is discharged through valve 7 47 and nitrogen inlet pipe 351 under positive pressure, thus realizing the filling of carbon dioxide gas. When the carbon dioxide concentration in the upper part of the grain storage silo 1 is low, opening valve 2 42, valve 3 43 and circulating fan 5, and closing valve 1 41, valve 44, valve 5 45, valve 6 46 and valve 7 47 can achieve uniform distribution of carbon dioxide gas in the grain storage silo 1. When filling with nitrogen, open valve 5 45 and valve 7 47, and close valve 1 41, valve 2 42, valve 3 43, valve 44, valve 6 46 and circulating fan 5. Nitrogen is drawn out and filled with nitrogen through nitrogen return pipe 331 and nitrogen inlet pipe 351 to achieve a circulation mode of drawing air from the ventilation cage opening 2 and filling nitrogen on the grain surface. When performing phosphine fumigation, opening valve 1 (41), valve 4 (44), and the circulating fan 5, and closing valve 2 (42), valve 3 (43), valve 5 (45), valve 6 (46), and valve 7 (47) allows the phosphine gas generated by the aluminum phosphide tablets 95 evenly distributed on the grain surface to circulate through the ventilation cage opening 2 and the circulating pipe, achieving effective insecticidal treatment.

[0031] Furthermore, according to existing technology, a mixture of carbon dioxide and nitrogen has a significant synergistic effect on the insecticidal properties of phosphine: Nitrogen forces pests to increase their respiratory rate by reducing oxygen concentration, while carbon dioxide further stimulates the opening frequency of the spiracles of pests. The dual effect significantly improves the inhalation efficiency of phosphine. Furthermore, carbon dioxide diffuses much faster than nitrogen and phosphine, and its initial penetration through the grain pile can form a "gas channel," accelerating the subsequent deep penetration of phosphine.

[0032] like Figure 3-12 As shown, in this embodiment, the aluminum phosphide dispensing mechanism 6 includes a placement cylinder 61 and a dispensing assembly. The dispensing assembly is installed inside the placement cylinder 61 to dispense aluminum phosphide tablets 95 in batches, ensuring that the aluminum phosphide tablets 95 are evenly distributed on the surface of the grain pile. A sealing cap 611 is threaded onto the upper end of the placement cylinder 61. Several inclined slide rails 62 are fixedly arranged in a circle on the circumferential surface of the placement cylinder 61, and a drug discharge port 613 is opened on the circumferential surface of the placement cylinder 61 at a position corresponding to the upper end of the slide rail 62. The slide rail 62 communicates with the inner cavity of the placement cylinder 61 through the drug discharge port 613. A horizontal drug placement cylinder 621 is fixedly arranged at the lower end of the slide rail 62. A detachable drug placement frame 622 is placed in the drug placement cylinder 621. The aluminum phosphide tablet 95 enters the slide rail 62 through the drug delivery component and then slides into the drug placement frame 622.

[0033] like Figure 6 and Figure 10 As shown, in this embodiment, a groove 612 communicating with the dispensing port 613 is provided on the circumferential surface of the placement cylinder 61. A sealing plate 64 for sealing the dispensing port 613 is slidably disposed in the groove 612. The lower end face of the sealing plate 64 is provided with an inclined surface. A compression spring 641 is symmetrically fixedly disposed on the upper end of the sealing plate 64. The compression spring 641 is fixed to the placement cylinder 61. The compression spring 641 compresses the sealing plate 64 to seal the dispensing port 613 and prevent the external humid air from affecting the aluminum phosphide tablets 95 in the placement cylinder 61.

[0034] like Figure 3 As shown, in this embodiment, a matching cover plate 63 is installed above the slide rail 62 to close the slide rail 62. A perforated plate 631 fixed to the cover plate 63 is provided above the cartridge 621. The aluminum phosphide tablet 95 combines with humid air through the holes on the surface of the perforated plate 631 to generate phosphine gas.

[0035] like Figure 12 As shown, in this embodiment, to prevent the generated phosphine gas from flowing back into the slide rail 62, a baffle 632 can be fixedly installed on the lower surface of the cover plate 63 near the perforated plate 631. A rotating plate 633 is installed below the baffle 632. Both the baffle 632 and the rotating plate 633 are vertically arranged. The rotating plate 633 rotates in conjunction with the slide rail 62. The upper end surface of the rotating plate 633 rotates on the arc surface below the baffle 632. The lower end surface of the rotating plate 633 is set as an inclined surface, and the inclination angle of the inclined surface is adapted to the slide rail 62.

[0036] Specifically, when the aluminum phosphide tablet 95 slides down the slide rail 62, it will hit the rotating plate 633, causing the rotating plate 633 to rotate. Then the aluminum phosphide tablet 95 enters the dispensing frame 622. Subsequently, the rotating plate 633 will return to a vertical state and come into contact with the inclined surface of the slide rail 62.

[0037] like Figure 3 and Figure 9As shown, in this embodiment, a support plate 7 is provided below the placement cylinder 61. The support plate 7 and the medicine placement cylinder 621 are on the same horizontal plane. An insertion rod 71 is fixedly provided on the lower surface of the support plate 7. The insertion rod 71 is inserted into the grain pile until the support plate 7 contacts the grain surface. A support rod 72 is fixedly provided on the upper surface of the support plate 7. A motor frame 65 is fixedly provided on the lower surface of the placement cylinder 61. The motor frame 65 is fixed to the support rod 72. A drive motor 651 is fixedly installed inside the motor frame 65. The drive motor 651 is used to drive the medicine dispensing component to rotate and dispense medicine.

[0038] like Figure 4 As shown, in this embodiment, the dosing assembly includes a rotating disk 81 and an aluminum phosphide placement assembly 9. The rotating disk 81 is rotatably disposed in the inner cavity of the placement cylinder 61. The output shaft of the drive motor 651 passes through the lower end face of the placement cylinder 61 and is fixed to the rotating disk 81. An electric push rod 82 and a push rod 83 are provided on the upper surface of the rotating disk 81. The electric push rod 82 drives the push rod 83 to push the aluminum phosphide tablet 95, so that the aluminum phosphide tablet 95 is pushed onto the slide rail 62.

[0039] like Figure 6 As shown, in this embodiment, the push rod 83 is composed of a vertically arranged connecting plate 831, a symmetrically arranged push rod 832, an arc-shaped rod 833, and a push rod 834. The connecting plate 831 is fixed to the output end of the electric push rod 82. A sliding groove 811 is symmetrically opened on the upper surface of the rotating disk 81. The protrusion below the connecting plate 831 slides in the sliding groove 811 to ensure the sliding stability of the push rod 83.

[0040] like Figure 7-8 As shown, in this embodiment, the aluminum phosphide placement assembly 9 includes a dispensing cylinder 91 and a sealing cap 92. The sealing cap 92 is disposed on the upper end of the dispensing cylinder 91 and is threadedly fitted. A pressure spring 93 is fixedly disposed on the inner surface of the sealing cap 92. A pressure plate 94 that slides in the inner cavity of the dispensing cylinder 91 is fixedly disposed on the lower end face of the pressure spring 93. An arc-shaped through groove 911 is opened on the circumferential surface below the dispensing cylinder 91. The height of the through groove 911 is adapted to the thickness of the aluminum phosphide tablet 95, so as to facilitate the push rod 83 to push the aluminum phosphide tablet 95.

[0041] like Figure 7-8 As shown, in this embodiment, after several aluminum phosphide tablets 95 are placed into the dispensing cylinder 91, the sealing cap 92 is tightened. At this time, the bottom aluminum phosphide tablet 95 is in the position of the through groove 911. Due to the compression of the aluminum phosphide tablet 95 by the pressure spring 93, the bottom aluminum phosphide tablet 95 will not fall out when the dispensing cylinder 91 is installed.

[0042] like Figure 5-8As shown, in this embodiment, the upper surface of the rotating disk 81 is provided with a threaded groove 812, the lower end of the dispensing cylinder 91 is threadedly engaged with the threaded groove 812, and after the dispensing cylinder 91 is screwed, the position of the through groove 911 relative to the dispensing port 613.

[0043] like Figure 6 As shown, in this embodiment, the diameter of the arc rod 833 is adapted to the diameter of the aluminum phosphide tablet 95, the distance between the two push rods 834 is also adapted to the diameter of the aluminum phosphide tablet 95, and the outer end of the push rod 834 is provided with a bevel, and the thickness of the push rod 834 is adapted to the thickness of the aluminum phosphide tablet 95.

[0044] Specifically, when the drive motor 651 drives the rotating disk 81 to the corresponding position of the dispensing port 613, the electric push rod 82 is activated, driving the push rod 83 to push the aluminum phosphide tablets 95. At this time, the push rod 834 pushes the sealing plate 64 upward, and the arc rod 833 pushes the aluminum phosphide tablets 95. As the push rod 83 moves, after pushing the sealing plate 64 upward, the push rod 834 continues to move towards the slide rail 62 until the arc rod 833 pushes the aluminum phosphide tablets 95 into the slide rail 62. After the pushing is completed, the electric push rod 82 drives the push rod 83 to reset, and the sealing plate 64 is reset by the compression spring 641, closing the dispensing port 613 again. With the rotation of the drive motor 651 and the movement of the electric push rod 82, the aluminum phosphide tablets 95 can be evenly distributed on the surface of the grain pile.

[0045] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0046] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0047] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A fumigation pipeline system for grain storage silos, characterized in that: The system includes a grain storage silo, a circulating fumigation duct assembly, a controlled atmosphere valve assembly, a circulating fan, and an aluminum phosphide dispensing mechanism. The circulating fumigation duct assembly is installed on the outer wall of the grain storage silo. Ventilation cages are symmetrically arranged below the circulating fumigation duct assembly. The ventilation cages are installed on the ground and communicate with the interior of the grain storage silo. The aluminum phosphide dispensing mechanism is located on the surface of the grain pile inside the grain storage silo. The controlled atmosphere valve assembly and the circulating fan are both connected to the circulating fumigation duct assembly. The aluminum phosphide dispensing mechanism includes a placement cylinder and a dispensing component for uniformly dispensing aluminum phosphide tablets. The dispensing component is rotatably disposed inside the placement cylinder. The dosing assembly includes a rotating disc and an aluminum phosphide placement assembly for placing aluminum phosphide tablets; Several inclined slide rails are fixedly arranged in a circle on the circumference of the placement cylinder. A drop hole is opened on the circumference of the placement cylinder at the position corresponding to the upper end of the slide rail. The slide rail communicates with the inner cavity of the placement cylinder through the drop hole. A horizontal placement cylinder is fixedly installed at the lower end of the slide rail. A detachable placement frame is placed inside the placement cylinder. A matching cover plate is installed above the slide rail. A perforated plate fixed to the cover plate is installed above the placement cylinder. A groove communicating with the dispensing port is provided on the circumferential surface of the placement cylinder at the upper end of the dispensing port. A sealing plate for sealing the dispensing port is slidably arranged in the groove. An inclined surface is provided on the lower end of the sealing plate. Compression springs are symmetrically fixed on the upper end of the sealing plate and are fixed to the placement cylinder. A baffle is fixedly installed on the lower surface of the cover plate near the perforated plate. A rotating plate is installed below the baffle. Both the baffle and the rotating plate are vertically installed. The rotating plate rotates in conjunction with the slide rail. The upper end face of the rotating plate rotates on the arc surface below the baffle. The lower end face of the rotating plate is set as an inclined surface. The inclination angle of the inclined surface is adapted to the slide rail. A support plate is provided below the placement cylinder, and the support plate and the placement cylinder are on the same horizontal plane. A rod is fixedly installed on the lower surface of the support plate, and a support rod is fixedly installed on the upper surface of the support plate. A motor frame is fixedly installed on the lower surface of the placement cylinder, and the motor frame is fixed to the support rod. A drive motor is fixedly installed inside the motor frame. The rotating disk is rotatably mounted inside the placement cylinder. The output shaft of the drive motor passes through the lower end face of the placement cylinder and is fixed to the rotating disk. The upper surface of the rotating disk is equipped with an electric push rod and a push rod. The push rod consists of a vertically arranged connecting plate, a symmetrically arranged push rod one, an arc-shaped rod, and a push rod two. The connecting plate is fixed to the output end of the electric push rod. The upper surface of the rotating disk is symmetrically provided with sliding grooves. The protrusion below the connecting plate slides in the sliding grooves. The diameter of the arc-shaped rod is adapted to the diameter of the aluminum phosphide tablet. The distance between the two push rods two is adapted to the diameter of the aluminum phosphide tablet. The outer end of the push rod two is provided with an inclined surface, and the thickness of the push rod two is adapted to the thickness of the aluminum phosphide tablet.

2. The grain storage fumigation pipeline system according to claim 1, characterized in that: The circulating fumigation duct assembly includes two vertically arranged circulating ducts 1, one horizontally arranged circulating duct 2, one vertically arranged circulating duct 3, one horizontally arranged circulating duct 4, one vertically arranged circulating duct 5, one horizontally arranged circulating duct 6, and one vertically arranged circulating duct 7, which are interconnected.

3. The grain storage fumigation pipeline system according to claim 1, characterized in that: The controlled atmosphere valve assembly includes valve one, valve two, valve three, valve four, valve five, valve six, and valve seven.

4. The grain storage fumigation pipeline system according to claim 2, characterized in that: The lower end of the circulation pipe three is connected to a nitrogen return air pipe, the lower end of the circulation pipe five is connected to a nitrogen inlet pipe, the lower end of the circulation pipe seven is connected to a carbon dioxide inlet pipe, the upper end of the circulation pipe five penetrates the side wall of the grain storage silo and communicates with the inner cavity of the grain storage silo, and the upper opening of the circulation pipe five is located 20 centimeters above the surface of the grain pile.

5. The grain storage fumigation pipeline system according to claim 1, characterized in that: The aluminum phosphide placement assembly includes a dispensing cartridge and a second sealing cap. The second sealing cap is located at the upper end of the dispensing cartridge and is threadedly fitted. A pressure spring is fixedly installed on the inner surface of the second sealing cap. A pressure plate that slides in the inner cavity of the dispensing cartridge is fixedly installed on the lower end face of the pressure spring. An arc-shaped through groove is opened on the circumferential surface below the dispensing cartridge. The height of the through groove is adapted to the thickness of the aluminum phosphide tablet. A threaded groove is opened on the upper surface of the rotating disk. The lower end of the dispensing cartridge is threadedly fitted with the threaded groove.

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