Phosphine gas generation system

Abstract

The invention discloses a phosphine gas generation system. According to the technical scheme, the device comprises a material storage module, a material distribution module, a generation module, a processing module, a measurement and control module and a rack box body. According to the scheme provided by the invention, the stored grain fumigation and insect killing can be more effectively realized, the safety risk of personnel dosing is completely avoided, the labor intensity is reduced, the workload is reduced, the medicine can be stored for a long time as long as the medicine is placed in the bin once, and the medicine can be released for multiple times according to the fumigation requirement; the generation opportunity and the dosage of the phosphine can be selected timely and reasonably, and the drug release concentration can be regulated and controlled according to actual conditions, so that the effective optimal CT value of the pest lethal concentration is achieved, and the dosage is reduced to the greatest extent; fumigating residues are subjected to innocent treatment, and residual gas is sent back to a grain pile, so that zero emission of poison gas is realized, the pesticide effect is fully utilized, and the environmental pollution is reduced; the whole fumigation operation and the circulation process are all carried out under the inner film of the granary pile, so that poison gas leakage is avoided, and grains are better protected.

Description

Technical Field

[0001] The invention relates to the technical field of fumigation and pest control of agricultural products such as grains, and in particular to a phosphine gas generating system. Background Art

[0002] At present, the phosphine gas commonly used for grain fumigation is produced by reacting 85% aluminum phosphide powder or 56% aluminum phosphide pills with water. There are many forms of phosphine fumigation in my country's medium and large grain storage warehouses, but generally speaking, there are two types: one is to apply the drug outside the warehouse; the other is to apply the drug inside the warehouse.

[0003] Outside-warehouse pesticide application: During the pesticide application process, the pesticide application personnel do not need to enter the grain storage warehouse or closed environment. They just need to load the medicine into the generator outside the warehouse at one time, and send the poison gas into the grain pile through the circulating fan to complete the pesticide fumigation operation. In the early days, phosphine generators were used to generate a 2:98 mixed gas of phosphine and carbon dioxide or to use a cylinder gas mixed with the two for fumigation outside the warehouse. However, they were not very practical and have been eliminated. Currently, patent application number 200410010343.2 discloses an external phosphine generator for granaries; patent number 201110128634.1 discloses a phosphine generator; patent number 202222752230.6 discloses a semi-automatic phosphine gas generation device, and patent number 201120158453.9 discloses a phosphine generator; CN206735804U discloses a visual phosphine generator; CN212065563U discloses a uniform and efficient granary fumigation equipment; CN107568192A discloses an intelligent dynamic deliquescent phosphine generator, etc. These generators still generate poisonous gas in a one-time centralized manner and send it into the grain pile.

[0004] The advantages of implementing fumigation outside the warehouse are: 1. Although the concentration of phosphine is very high, it can be controlled; 2. The residues can be concentrated and processed at one time; 3. The phosphine gas can be directly incorporated into the circulation pipeline to achieve one-way circulation in the entire warehouse or pile.

[0005] The fumigation outside the warehouse can be implemented, but there are still the following shortcomings: 1. The fumigation outside the warehouse is a one-time centralized drug application. The PH3 concentration of fumigation insecticide is very high in the initial stage, which is easy to cause pests to die in vain. This is not the best medicinal insecticide effect, that is, the effective CT value that kills pests; 2. The fumigation operation time is relatively long, 8-10 hours / time, and personnel are required to be on duty from beginning to end. Carbon dioxide cylinder gas is very easy to be blocked and cause accidents; 3. It is not suitable to place the drug outside the warehouse for a long time and apply it many times, and it can only kill single-insect storage pests; 4. There is more or less leakage of phosphine outside the warehouse, causing environmental pollution and other shortcomings; 5. The residues after fumigation still need to be processed again, and the residual toxic gas is not recycled, but directly discharged into the environment, causing harmful pollution.

[0006] In-warehouse application: During the application process, the application personnel need to enter the grain storage warehouse or a closed environment to complete the fumigation application. At present, this technology is also a commonly used method, mainly including the method of placing the medicine in a container on the grain surface, the method of applying the medicine on the surface of the grain pile with a small medicine bag, the method of layered application of the medicine through a probe tube, and the method of slow-release application.

[0007] The advantages of implementing in-warehouse fumigation are: 1. Less toxic gas leakage and less environmental pollution; 2. No staff is required to be on duty for a long time during fumigation, and the warehouse can be sealed after the application of pesticides; 3. Application of pesticides on the grain surface in the warehouse can also achieve one-way circulation of the entire warehouse.

[0008] The following shortcomings can be implemented for fumigation in warehouses: 1. Multiple people are required to enter the warehouse to apply pesticides; 2. Multiple people are required to enter the warehouse to clean up the residues; 3. The concentration of the drug effect cannot be controlled and can only be determined by the humidity of the grain pile space in the warehouse; 4. The residue still needs to be processed again, and the residual toxic gas is directly discharged into the environment; 5. The grain surface of the entire warehouse cannot be closed; 6. The workload of fumigation operation is large; 7. People who are directly exposed to toxic gases need to wear respirators, which is less safe; 8. The unit dosage is large, but the effective insecticide CT value cannot be achieved; 9. Accurate fumigation and insecticide cannot be achieved within the effective time of the grain storage cycle; 10. The normal inspection of the grain warehouse is affected during the fumigation period, and it is not suitable to close the grain warehouse to protect the grain most effectively; air conditioning and other temperature control measures cannot be used in summer when the whole warehouse is fumigated, resulting in an increase in grain temperature, which is not conducive to grain preservation, etc.

[0009] In short, the current one-time centralized fumigation technology or method, whether outside or inside the warehouse, is not only time-consuming, labor-intensive, and costly, but also causes many unsafe problems such as environmental pollution caused by residues and improper tail gas treatment or toxic gas leakage, and cannot achieve zero pollution and zero emissions. At the same time, the actual demand for fumigation of grain and other agricultural products does not want to increase the CT value by putting too high a concentration of drugs at one time, but hopes to achieve it by delaying the sealing time as much as possible under the condition of effective killing of pests or inhibiting the optimal concentration of mold. Summary of the invention

[0010] In view of the shortcomings of the prior art, the main purpose of the present invention is to provide a phosphine gas generating system, which can more effectively realize the fumigation and pest control of stored grain, without the need to add medicine at multiple points in the warehouse, and without the need for personnel to be on duty for a long time. As long as the medicine is placed in the warehouse once, it can be retained for a long time, and the medicine can be released in multiple times according to the needs of fumigation, completely avoiding the safety risk of personnel adding medicine, reducing labor intensity and workload; the timing of phosphine generation and the dosage of the medicine can be reasonably selected, and the concentration of the medicine can be adjusted according to the actual situation to achieve the optimal CT value of the effective lethal concentration of pests, so as to minimize the amount of medicine used; the fumigation residue is harmlessly treated, and the residual gas is sent back to the grain pile to achieve zero emission of toxic gas, and the efficacy of the medicine is fully utilized, reducing environmental pollution; the entire fumigation operation and circulation process are all carried out under the inner membrane of the grain warehouse pile, which completely avoids the leakage of toxic gas. The application of this technology is more conducive to the daily management of the closed grain storage warehouse and temperature control operations, which is convenient and practical, economical and effective, safe and reliable, and better protects national food security.

[0011] To achieve the above object, the present invention provides the following technical solution: a phosphine gas generating system, comprising: A material storage module, the material storage module includes a material storage mechanism, a material discharge mechanism and a material drop mechanism; the material storage mechanism includes a material storage tank and a material storage cover connected to the material storage tank by a plurality of movable bolts, the central part of the material storage cover is equipped with a material guide pipe vertically upward at an angle of 30 to 45 degrees to the cover surface; the material discharge mechanism includes a material mixing cylinder arranged on the back of the material storage tank and a material mixer arranged inside the material storage tank and connected to the material mixing cylinder, a material drop opening is provided in the material storage tank, and the material mixer opens or closes the material drop opening under the drive of the material mixing cylinder; the material drop mechanism includes a material drop pipe connected to the material drop opening, a reserved pipe connected to the material drop pipe and a flip device capable of closing or opening the bottom opening of the material drop pipe, and the material drop pipe is arranged vertically downward at an angle of 30 to 45 degrees to the bottom surface of the material storage tank; A material distribution module, the material distribution module includes a material pushing mechanism, a material storage mechanism, a primary material turning mechanism and a secondary material turning mechanism; the material pushing mechanism is used to receive the material dropped by the material dropping mechanism and evenly distribute the material into 2n valve chambers through the pushing module, and the volume of each valve chamber is equal; the material storage mechanism is used to open or close the valve chamber, when the valve chamber is opened, the material in the 2n valve chambers enters the primary material turning mechanism, when the valve chamber is closed, the material is stored in the valve chamber; the primary material turning mechanism is used to receive the material in the 2n valve chambers and divide the material into 4n portions before entering the secondary material turning mechanism; the secondary material turning mechanism is used to divide the 4n portions of material received from the primary material turning mechanism into 8n portions of material; A generating module, comprising a plurality of phosphine generating chambers, wherein the plurality of phosphine generating chambers are fixed together by a top fixing plate and a bottom fixing plate, and each phosphine generating chamber comprises a keel mechanism for supporting, wherein a generating mechanism for generating phosphine gas, a material closing mechanism for preventing powder from falling, and a powder collecting mechanism for collecting powder are fixedly arranged inside the keel mechanism, and a dust isolation mechanism for closing the phosphine generating chamber is further arranged outside the keel mechanism; A processing module, including an air compression mechanism, a vacuum suction mechanism, an aluminum phosphide residue generating device, a fan circulation device and a control center; the air compression mechanism includes an air compressor and a high-pressure air supply pipe connected to the air compressor; the vacuum suction mechanism includes a first vacuum feeder and a second vacuum feeder arranged in parallel, the first vacuum feeder and the second vacuum feeder are connected through a high-pressure air supply pipe and a high-pressure air feed pipe, the first vacuum feeder is provided with a first inlet valve and a first outlet valve on both sides, the second vacuum feeder is provided with a second inlet valve and a second outlet valve on both sides, and the second vacuum feeder is connected A powder collecting box for receiving residual powder is connected, and a feeding valve is arranged between the powder collecting box and the second vacuum feeder; the aluminum phosphide residual material generating device comprises a primary reaction tank and a secondary reaction tank connected in series, the primary reaction tank is connected with a high-pressure gas material pipe, the primary reaction tank and the secondary reaction tank are connected through a guide pipe, the fan circulation device comprises a circulation fan connected with the secondary reaction tank, the circulation fan is connected with the circulation air duct system of the grain pile through the positive pressure end air inlet pipe and the return pipe, and the control center is electrically connected with the air compressor, the first vacuum feeder, the second vacuum feeder, the primary reaction tank, the secondary reaction tank and all valves; A measurement and control module, including a detection mechanism, an analysis and control center, a joint control center, an actuator and an operation and display device; the detection mechanism includes a PH3 concentration detector and a temperature and humidity detector arranged inside the grain pile and in the pipeline; the data collected by the detection mechanism is analyzed by the analysis and control center, and then the actuator performs the action; the actuator includes a solenoid valve for controlling each cylinder; a joint control chip controller is arranged in the joint control center, which communicates control information with the operation and display device and is connected to the control center of the processing module; A rack box, the rack box includes an inner fixing bracket, an outer box, a wire pipe tray and a box fixing card; the inner fixing bracket is used to install and fix the storage tank and the turning mechanism of the storage module, the first-level turning and dividing mechanism and the second-level turning and dividing mechanism of the distribution module, and each phosphine generating chamber of the generating module; the outer box surrounds the storage module, the distribution module and the generating module into one, and has two air inlet pipes and two air outlet pipes on both sides of the bottom.

[0012] Preferably, the flipping device includes a valve housing, a valve core, a valve shaft, a valve plate, a front shaft sleeve, a rear shaft sleeve, a driving arm, a movable connector, a flipping cylinder and a counterweight device. The lower end of the valve core is tightly fitted inside the upper end of the valve housing. Shaft sleeve mounting holes are opened on both sides of the left part of the valve housing. The valve shaft is opened with a groove, and a valve plate is installed in the middle. Both ends pass through the front shaft sleeve and the rear shaft sleeve and are prevented from axial movement by "O"-shaped retaining spring pins. The other end of the valve shaft is connected to the driving arm and connected to the movable connector. The movable connector is directly connected to one end of the flipping cylinder for pushing and pulling. The other end of the flipping cylinder is fixedly connected to the frame box. After the reserved tube is filled with medicinal materials, the flipping cylinder drives the driving arm connected to the valve shaft to move, and the valve plate installed on the valve shaft performs a flipping action.

[0013] Preferably, the pushing module includes a material distribution trough pipe, a screw assembly arranged in the material distribution trough pipe and a ratchet gear assembly for driving the screw assembly to rotate, the screw assembly includes a central shaft and a left screw and a right screw sleeved on the central shaft, the threads on the left screw and the right screw are arranged in reverse, the material distribution trough pipe is respectively provided with n valve chambers at the left screw and the right screw, the central shaft is respectively provided with a left gear tray and a right gear tray at the ends of the material distribution trough pipe, and the two ends of the central shaft are respectively supported by a left shaft seat and a right shaft seat.

[0014] Preferably, the ratchet gear assemblies are arranged at both ends of the central axis, and each ratchet gear assembly respectively includes a ratchet, a ratchet rod, a pawl and a stop pin, the ratchet is fixed on the central axis, the stop pin is in contact with the ratchet and is arranged on the tooth pin fixing plate, one end of the ratchet rod is connected to the pull rod through a first Y-type connector, and the other end of the ratchet rod is connected to a pawl that can push the ratchet to rotate, and the pull rod is connected to one end of the push-pull shaft through a second Y-type connector, the push-pull shaft sleeve is arranged in a linear bearing seat, and the other end of the push-pull shaft is connected and fixed to the end of the push-pull plate, and an up and down displacement cylinder that can drive the push-pull shaft to move up and down is installed in the middle of the push-pull plate; a number of residual material chambers for receiving residual materials are also arranged on the left screw and the right screw respectively on the material dividing trough pipe.

[0015] Preferably, the material storage and distribution mechanism includes a valve plate, a valve stem, a valve shaft sleeve, a push-pull rod and a fixed plate; the valve plate is connected to one end of the valve stem, both sides of the valve stem are installed in the valve shaft sleeve, 2n valve stems are fixed on the push-pull rod, 2n valve shaft sleeves are fixed on the fixed plate, and the fixed plate is provided with a push-pull rod and the valve plate can be driven to move back and forth to realize the opening and discharging of the 2n valve chambers and the closing of the storage of materials.

[0016] Preferably, the first-level material turning and distributing mechanism and the second-level material turning and distributing mechanism respectively include a turning shell and an equal turning core arranged in the turning shell, the turning shell includes a material receiving pipe and a left material discharge pipe and a right material discharge pipe located at the lower end of the turning shell, the equal turning core includes a pointed part extending into the material receiving pipe and two material guide plates respectively located above the left material discharge pipe and the right material discharge pipe, and the middle part of the equal turning core is arranged inside the turning shell through a rotating shaft; the material receiving pipe of each turning shell in the first-level material turning and distributing mechanism is arranged at the material discharge port of each valve chamber, and the left material discharge pipe and the right material discharge pipe of each turning shell in the first-level material turning and distributing mechanism are respectively arranged at the material receiving pipe of each turning shell in the second-level material turning and distributing mechanism.

[0017] Preferably, the keel mechanism comprises a plurality of keel rods, an upper solid block, a bottom material cup and a keel ring, the upper ends of the plurality of keel rods are fixed by the upper solid block, the upper solid block is fixedly arranged on the top fixing plate, the lower ends of the plurality of keel rods are passed through and fixed to the bottom material cup, each keel rod is fixedly connected to the upper solid block and the bottom material cup by screws, and the middle parts of the plurality of keel rods are fixedly connected by a plurality of keel rings; the generating mechanism comprises a plurality of deliquescence disks fixed to the outsides of the plurality of keel rods, a bulk material opening is provided in the center of the deliquescence disk; the material closing mechanism comprises a middle solid cup sleeved under the bottommost deliquescence disk, a middle residue drop hole is provided in the center of the middle solid cup, and a A middle discharge cone for blocking the middle residual hole, the several keel rods pass through the middle solid cup and are fixedly connected to the middle solid cup by screws, a two-way cylinder is arranged in the keel mechanism, the upper piston rod of the two-way cylinder is connected to the middle discharge cone, and the middle discharge cone can follow the upper piston rod to open the middle residual hole; the powder collecting mechanism comprises a vacuum feeder arranged below the bottom material cup, the vacuum feeder is connected to the bottom discharge hole in the center of the bottom material cup, the bottom material cup is also provided with a bottom discharge cone capable of blocking the bottom discharge hole, the bottom discharge cone is connected to the lower piston rod of the two-way cylinder; a bottom cover capable of covering the vacuum feeder is also connected below the bottom material cup, and the bottom material cup is fixed to the bottom fixing plate by a bottom cone ring.

[0018] Preferably, a tube expansion core fixedly connected to the keel ring is further provided at the center of the deliquescence dish, the length of the tube expansion core is the same as that of the deliquescence dish, and the cross-sectional area of ​​the tube expansion core is 1 / 3 of the cross-sectional area of ​​the center of the deliquescence dish.

[0019] Preferably, the dust-isolating mechanism comprises a powder-isolating cloth capable of covering the entire keel mechanism, and the powder-isolating cloth is fixed in the cloth-fixing ring grooves of the cloth-fixing plate and the bottom material cup respectively by means of an upper steel hoop clamp and a lower steel hoop clamp.

[0020] Preferably, the primary reaction tank and the secondary reaction tank are also connected to an electric heater auxiliary device, and the control center is electrically connected to the electric heater auxiliary device.

[0021] The present invention has the following advantages over the prior art: 1. Reduce pollution: There are two ways to arrange the equipment of the storage module, the distribution module and the generation module: one is that the equipment is built-in, that is, the three are fixed on the wall above the grain surface in the warehouse, which is convenient for centralized loading of medicines and avoids contact between medicines and food; the other is that the three are placed outside the warehouse and form an integrated machine with the processing and measurement and control modules, which is convenient for random use; no matter which method is used, the technology minimizes the contact between people and medicines and between medicines and the environment, reduces the harm of toxic gases in the environment, and ensures personal safety. This case adopts the former built-in equipment method.

[0022] 2. Convenient management: Both the processing module and the measurement and control module are external to the equipment, which is convenient for operation and management and realizes real-time monitoring.

[0023] 3. Unmanned fumigation: Carry out one-time, fixed-point, centralized, mouth-to-mouth loading of pesticides in the storage tank, avoiding the personal safety risks of multiple-point pesticide application on the grain surface, and realizing unmanned fumigation of stored grain to kill insects.

[0024] 4. Reduce the amount of medicine: The overall application of this technology is to carry out fumigation operations below the grain pile in the warehouse, which can effectively avoid adding medicine to the grain surface and the shortcomings of the whole warehouse circulation fumigation. The amount of medicine used for the invalid concentration in the space can be saved by 30%-50% or even more. At the same time, the high concentration in the warehouse space also increases the possibility of leakage.

[0025] 5. Reduce corrosion: The power sources of the material-dropping mechanism of the storage module, the material-distributing mechanism of the distribution module, and the switch cylinder of the generating module are all pneumatically operated, and important generating components are made of anti-corrosion materials, avoiding safety risks such as electricity consumption and corrosion of the mechanism.

[0026] 6. Speed ​​up and increase efficiency: The screw-propelled one-to-four and equal-weight self-dividing four-to-eight and eight-to-sixteen types of the material-dividing module enable aluminum phosphide to fully expand its surface area in the deliquescence tray in the generating chamber and naturally fall downward, which is more conducive to increasing the deliquescence reaction speed and controlling the effective concentration.

[0027] 7. Harmless treatment: After the aluminum phosphide reaction in the module, the residues in the bottom material cup and the powder separation cloth can be transported by the vacuum feeder and concentrated at the same interface outside the warehouse. Then, they are harmlessly treated in batches in a one-to-many manner by the processing module. At the same time, the residual gas is still sent back to the grain pile, which is beneficial to the utilization of drugs.

[0028] 8. Precision fumigation: The medicine in the storage tank can be stored for a long time and automatically generated multiple times. The timing of phosphine generation and the dosage of the generating module can be reasonably selected, which is more conducive to the slow release of low-agent stored grain, effectively reaching the optimal CT value of the lethal concentration of pests, and realizing precise insecticidal fumigation.

[0029] 9. Safe and reliable: The phosphine generator is built-in, and the processing device is equipped with automatic operation and alarm devices. There is no need for personnel to be on duty for a long time. The fumigation drugs and residual powder are all concentrated in the powder isolation cloth and will not be brought into the grain pile due to the fan circulation to contaminate the grain, ensuring the safety of grain, equipment and personnel.

[0030] 10. Beneficial to grain preservation: The core of this technology is that the application, occurrence and circulation of fumigation are completely embedded in the granary circulation ventilation system, which is beneficial to the daily operation management such as the sealing of grain storage warehouses and air-conditioning temperature control, and better protects the country's grain. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the partial exploded structure of the material storage module, the material distribution module, the generating module and the frame box of the present invention; Figure 2 It is a structural principle diagram of the processing module of the present invention; Figure 3 It is a structural principle diagram of the measurement and control module of the present invention; Figure 4 An exploded view of the storage module of the present invention; Figure 5 It is a front view of the storage module of the present invention; Figure 6 for Figure 5 Cross-sectional view of the AA section; Figure 7 It is a structural schematic diagram of a material mixer of a material storage module of the present invention; Figure 8 It is a structural schematic diagram of the material distribution module of the present invention; Fig. 9 for Figure 8 A cross-sectional view of part A; Fig.10 It is a front view of the material distribution module of the present invention; Fig.11 for Fig.10 Cross-sectional view of the AA section; Fig.12 It is a side view of the material distribution module of the present invention; Fig.13 It is a structural schematic diagram of the material distribution trough pipe of the present invention; Fig.14 It is a structural schematic diagram of the screw assembly of the present invention; Fig.15 It is a structural schematic diagram of the turning shell of the present invention; Fig.16 It is a structural schematic diagram of the isotropic core of the present invention; Fig.17 It is a structural schematic diagram of the generating module of the present invention; Fig.18 For the present invention Fig.17 A schematic diagram of the enlarged structure of the middle part A; Fig.19 It is a structural schematic diagram of the generating mechanism of the present invention; Fig. 20 It is a schematic structural diagram of the deliquescence tray of the present invention; Fig.21 It is a structural schematic diagram of the middle solid cup of the present invention; Fig. 22 It is a front view of the bottom material cup of the present invention; Fig.23 It is a top view of the bottom material cup of the present invention; Fig.24 It is a structural schematic diagram of the expanded tube core of the present invention; Fig.25 It is a front view of the rack box of the present invention; Fig.26 A side view of the rack box of the present invention; Fig. 27 It is a schematic diagram of the structure of the internal fixation bracket of the present invention; Fig.28 It is a schematic structural diagram of the wire-passing tube reel of the present invention. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] The material storage module A000 includes a material storage mechanism, a material discharge mechanism and a material drop mechanism, which are used to store and drop materials, that is, to store aluminum phosphide drugs and drop them into the material distribution module B000.

[0034] The material storage mechanism includes an upper material storage cover A025 and a lower material storage tank A005. The inner bottom surface of the material storage cover A025 is paved with a circular rubber pad A024. The material storage tank A005 between the material storage covers A025 is fixedly installed by four movable bolts A004.

[0035] A material guide pipe A026 is installed in the center of the storage cover A025, which is vertically upward at an angle of 30-45 degrees to the cover surface. The upper end of the material guide pipe A026 is connected to one end of a manual ball valve A027 by a thread, and the other end of the manual ball valve A027 is connected to one end of a drop pipe A028 by a thread. The other end of the drop pipe A028 is connected to the tightening cover A029 by a thread.

[0036] The material discharge mechanism includes a mixer A031 and a mixing cylinder A008. A central axis hole A033 is opened at the center of the bottom of the storage tank A005, and mounting screw holes A034 are opened around the central axis hole A033. A mixer A031 that can rotate around the central axis hole A033 is installed on the inner bottom surface of the storage tank A005, and a countersunk hole A032 is opened on the mixer A031 for accommodating a pressure spring A003; the outer bottom surface of the storage tank A005 is connected to the mixing cylinder A008 that can rotate 90 degrees through the central axis hole A033, and the mixing cylinder A008 is fixed to the fixed plate A006 by bolts, and the fixed plate A006 is fixed to the bottom center of the storage tank A005 by bolts through the mounting screw holes A034.

[0037] The mixer A031 and the mixing cylinder A008 are fixedly connected by bolts A001; the gasket A002 is placed between the bolts A001 and the pressure spring A003 to act as a gasket.

[0038] The pressure spring A003 is mainly used to compress the mixer A031 to close the upper port of the drop pipe A007 when the power is off, thereby increasing the sealing effect of the storage tank A005.

[0039] There is also a groove A030 at the bottom of the mixer A031 to prevent the medicinal powder from being blocked when the mixer A031 rotates, so as to facilitate discharge from the middle.

[0040] The thin edges A036 on both sides of the mixer A031 are conducive to the rotary mixing movement. When it is necessary to drop materials, the mixer A031 can make a 90-degree rotation under the drive of the mixing cylinder A008 to open the drop opening at the bottom of the storage tank A005 for automatic drop feeding. After a short pause when the materials are fully dropped, it will rotate 90 degrees to close the drop opening A035 to stop feeding. The mixer A031 mainly blocks the drop opening A035 and stirs to promote the material to fall into the drop pipe A007 to prevent the material from agglomerating for a long time and blocking the drop opening A035. The mixing cylinder A008 is controlled by the solenoid valve E013.

[0041] The material dropping mechanism includes a material dropping pipe A007, a reserved pipe A009 and a material turning device. The upper end of the material dropping pipe A007 is opened at the bottom of the storage tank A005 and is vertically downward at an angle of 30-45 degrees with the bottom surface. The lower end of the material dropping pipe A007 is connected to the upper end of the reserved pipe A009. The function of the reserved pipe A009 is to reserve a certain volume for containing medicines, and its volume is about 4 times the sum of the volumes of the four valve chambers in the material distribution module. The lower end of the reserved pipe A009 is connected to the upper end of the valve core A019 of the material turning device.

[0042] The material turning device is composed of a valve housing A018, a valve core A019, a valve shaft A017, a valve plate A015, a front shaft sleeve A015 and a rear shaft sleeve A016, a driving arm A020, a movable connector A021, a material turning gas A022 and a counterweight device. The counterweight device plays a counterweight role and is composed of a counterweight hammer A012, a counterweight rod A013, a fixed connector A014 and a locking nut A011.

[0043] The lower end of the valve core A019 is tightly fitted inside the upper end of the valve housing A018. Bushing mounting holes are opened on both sides of the left part of the valve housing A018. The valve shaft A017 is opened with a groove, and the valve plate A010 is installed in the middle. Both ends pass through the front bushing A015 and the rear bushing A016 and are prevented from axial movement by "O" type retaining spring pins. The other end of the valve shaft A017 is also connected to a driving arm A020 ​​and is connected to a movable connector A021. The movable connector A021 is directly connected to one end of the material turning cylinder A022 for pushing and pulling actions, and the other end of the material turning cylinder A022 is fixedly connected to the frame.

[0044] The counterweight device mainly functions as follows: when the power is off, the counterweight pushes back the material turning cylinder A022 so that the valve plate A010 is in a horizontal closed valve core A019 state, thereby increasing the sealing effect of the storage tank A005.

[0045] The counterweight device is fixedly connected to the driving arm A020 ​​through one end of a fixed connector A014, and the other end is connected to one end of a counterweight rod A013, and the other end is equipped with a counterweight hammer A012, and both ends of the counterweight hammer A012 are locked with nuts A011.

[0046] After the reserved tube A009 is filled with medicinal materials, the material turning cylinder A008 is controlled by the solenoid valve E012 and actuates, driving the driving arm A020 ​​connected to the valve shaft A017 to move. At this time, the valve plate A010 installed on the valve shaft A017 will flip over to realize the material turning action.

[0047] The material distribution module is mainly used for evenly distributing and dropping materials. Taking the number of valve chambers on each side n=2 as an example, it includes: The material pushing mechanism B001 is used to receive materials and evenly distribute the materials to four valve chambers numbered B041, B042, B043, and B044 through the pushing module, and the volume of each valve chamber is equal; The material storage and distribution mechanism is used to open or close the valve chamber. When the valve chamber is opened, the materials in the four valve chambers enter the first-level material distribution mechanism. When the valve chamber is closed, the materials are stored in the valve chamber. The first-level material turning and dividing mechanism B002 receives the materials in the four valve chambers and divides the materials into 8 portions before entering the second-level material turning and dividing mechanism; The secondary material dividing mechanism B003 divides the 8 portions of material received from the primary material dividing mechanism B00 into 16 portions of material.

[0048] When the left screw B039 and the right screw B036 rotate, the material in the receiving pipe B010 will move to the left and right in the material distribution trough pipe B022. The left screw B039 enters the left valve chamber B042 and the left valve chamber B041 to push the medicine; the right screw B036 enters the right valve chamber B043 and the right valve chamber B044 to push the medicine, realizing one-to-four. If there is more material, it will be pushed to the left residual material chamber B045 and the right residual material chamber B04. If there is less material, it can enter the next level normally.

[0049] The left screw B039 and the right screw B036 are both mounted on the central shaft B034. The left and right gear trays B040 and B037 are respectively mounted on the left and right sides of the central shaft B034 and are supported by the left shaft seat B017 and the right shaft seat B038. The outermost ends of the central shaft B034 are respectively equipped with ratchet gear mechanisms.

[0050] The ratchet gear mechanism is composed of a ratchet wheel B016, a ratchet rod B032, a pawl B033, and a tooth stop pin B015; the ratchet wheel B016 is fixed on the central shaft B034, the tooth stop pin B015 is in contact with the ratchet wheel B016 and is set on the tooth pin fixing plate B014, the ratchet rod B032 is connected to the pull rod B013 through the first Y-type connector B025; the pull rod B013 is connected to one end of the push-pull shaft B011 through the second Y-type connector B012, and the push-pull shaft B011 is assembled Inside the linear bearing seat B008; the other end of the push-pull shaft B011 is connected and fixed to the two ends of the push-pull plate B009, and the up and down displacement cylinder B027 is installed in the middle of the push-pull plate B009; the ratchet B016 is rotated by the up and down movement of the displacement cylinder B027, thereby realizing the movement of materials in the material distribution trough pipe B022 and reaching the left I valve chamber B042, the left II valve chamber B041, the right I valve chamber B043 and the right II valve chamber B044 respectively. The volumes of these four valve chambers are equal.

[0051] The left and right valve chambers are controlled by the main valve control mechanism to retain or release materials. The main valve control mechanism includes valve plate B023, valve stem B019, valve shaft sleeve B021, push-pull rod B020 and fixed plate B007; the end of the valve plate B023 is connected to one end of the valve stem B019, and both sides of the valve stem B019 are installed in the valve shaft sleeve B021. The other ends of four identical valve stems are fixed on a push-pull rod B020, and the valve shaft sleeve B021 is also fixed on a fixed plate B007. The push-pull rod B020 realizes the opening and discharging and closing of the left and right valve chambers through the back and forth displacement of the push-pull cylinder B048.

[0052] The first-level material turning and distributing mechanism and the second-level material turning and distributing mechanism respectively include a turning shell and an equal turning core B005 arranged in the turning shell B056. The turning shell B056 includes a material receiving pipe B057 and a left material discharge pipe B054 and a right material discharge pipe B055 located at the lower end of the turning shell B056. The equal turning core B005 includes a pointed head B050 extending into the material receiving pipe B057 and two material guide plates B049 located above the left material discharge pipe B054 and the right material discharge pipe B055 respectively. The middle part of the equal turning core B005 is arranged inside the turning shell B056 through a rotating shaft B051. The material receiving pipe B057 of each material turning shell B056 in the first-level material turning and distributing mechanism is arranged at the discharge port of each valve chamber, and the left discharge pipe B054 and the right discharge pipe B055 of each material turning shell B056 in the first-level material turning and distributing mechanism are respectively arranged at the material receiving pipe B057 of each material turning shell B056 in the second-level material turning and distributing mechanism.

[0053] The materials in the left and right Ⅰ and Ⅱ valve chambers will enter the Ⅰ level flap sample divider B002 in turn at the same time, and then enter the Ⅱ level flap sample divider B003; the Ⅰ and Ⅱ level flap sample dividers are composed of an equal flip core B005, a flip shell B056, a material receiving pipe B057, a left discharge pipe B054, and a right discharge pipe B055; after passing through the Ⅰ and Ⅱ level flap sample dividers, the materials are automatically divided and naturally flow into the inlet pipes of the corresponding generating modules, and the Ⅰ level flap sample divider B002 realizes four to eight, and the Ⅱ level flap sample divider B003 realizes eight to sixteen.

[0054] The phosphine gas generation module of this scheme is mainly used for phosphine gas generation, that is, to fully react with moisture in the flowing air to deliquesce, and automatically send the residue into the processing module. Taking 16 phosphine generation chambers C007 as an example, the phosphine generation chambers C007 are composed of keel rods C026, upper solid blocks C031, keel rings C033, cloth solid discs C030, deliquescent discs C032, middle solid cups C023, middle discharge cones C012, two-way cylinders C009, bottom material cups C006, bottom discharge cones C018, bottom cover C005, powder isolation cloth C025, etc.

[0055] The keel rod C026 has three equivalent keel rods C027 and keel rod C035. The upper end is fixed by an upper solid block C031, the lower end is passed through the bottom material cup C006 and fixed, and the middle part is fixed by a keel ring C033. The upper end of the keel ring C033 is equipped with a solid block C031. Each upper solid block C031 is installed on the fixed plate C001. The spacing between each keel ring C033 is equal to the spacing between each deliquescence disk C032. The number of deliquescence disks C032 of the generating mechanism C002 can be increased or decreased according to actual needs, generally 4-10 groups, and this embodiment is 8 groups, which are serially connected on three keel rods.

[0056] The middle solid cup C023 of the material closing mechanism C003 is tightly connected in series to the lower end of the last deliquescence disk C034. The last deliquescence disk C034 does not have a bulk material port C037. A middle discharge cone C012 is installed in the center of the middle solid cup C023. A middle residual hole C052 is arranged in the center of the middle solid cup C023. Several keel rods pass through the middle solid cup C023 and are fixedly connected to the middle solid cup C023 by screws arranged in screw holes C050. When aluminum phosphide medicine material falls into the deliquescence disk C032, the middle discharge cone C012 will close the middle residual hole C052 of the middle solid cup C032 due to its own weight without the action of the upper cylinder C014. After the aluminum phosphide reacts with water molecules in the flowing air to form aluminum hydroxide powder, its volume increases by about two times. The increased medicine material volume will overflow from the edge of the deliquescence disk C032 and fall into the bottom material cup C006 and the powder separation cloth C025. The powder separation cloth C025 is fixed to the cloth fixing plate C030 and the cloth fixing ring groove C040 of the bottom material cup C006 through the upper steel hoop clamp C028 and the lower steel hoop clamp C022 respectively. When the aluminum phosphide medicine material is basically deliquesced, the middle discharge cone C012 will be opened under the action of the upper cylinder C014 of the two-way cylinder to facilitate the powder material to continue to fall freely from the residual hole C052 into the bottom material cup C006.

[0057] The middle discharge cone C012 is connected to the piston rod C013 of the upper cylinder C014, and the bottom discharge cone C018 is connected to the piston rod C016 of the lower cylinder C015.

[0058] In the center of the deliquescence tray C032, an expansion core C047 can be installed according to whether the fumigation material is powder, tablet or pill. If it is powder, an expansion core C047 can be installed to reduce the center volume and reduce the dosage. The length of the expansion core C047 is equal to the total length of the deliquescence tray C032, and the thickness is 1 / 3 of the center cross-sectional area of ​​the deliquescence tray C032. It is fixed to the keel ring C033.

[0059] The bottom material cup C006 is provided with three keel rod holes C046, four air pipe through holes C045 for the air pipe C011 of the two-way cylinder C009 to pass through, and a bottom discharge hole C042. When a certain amount of aluminum hydroxide residual powder accumulates, the lower cylinder C015 of the two-way cylinder drives the bottom discharge cone C018 to open, and the residual powder will be sucked out by the vacuum feeder C021 and sent to the processing module for deep processing.

[0060] The bottom discharge cone C018 is similar to the middle discharge cone C012 and has two pointed ends. The bottom of the bottom material cup C006 is equipped with a bottom cover C005, and each bottom material cup C006 is fixed to the bottom fixing plate C004 through a bottom cone ring 043. The bottom cover 005 is provided with a feeding hole C010 for the vacuum feeder C021 to extend.

[0061] The phosphine tail gas treatment module D000 is mainly used to treat the residual powder after aluminum phosphide deliquescence for further thorough reaction, and to return the poisonous gas after the reaction to the grain pile for effective utilization.

[0062] The phosphine tail gas treatment device D000 consists of a control center D026, an air compressor D003, a first vacuum feeder D004 and a second vacuum feeder D022, a high-pressure air supply pipe D001, a high-pressure gas feed pipe D019, a primary reaction tank D007, a secondary reaction tank D008 also called a purification tank, a circulating fan D016, an air intake pipe D012, a reflux pipe D015 and an electric heater auxiliary device D006.

[0063] The first vacuum feeder D004 is installed at the bottom of the bottom material cup of the phosphine generating device. When the air compressor D003 is working and there is an air source, when the first inlet valve D027, the second outlet valve D020 and the feed valve D024 are all closed, and the second inlet valve D002 and the second outlet valve D021 are all opened, the residual powder in the phosphine generating device will be sucked in by the negative pressure of the vacuum feeder D004 and sent to the primary reaction tank D007 through the high-pressure gas pipe D019. The reaction poisonous gas in the primary reaction tank D007 will enter the purification tank D008 through the guide pipe D017. The two-stage reaction tanks are both in a high-pressure state. After being regulated by the pressure regulating valve D011, they directly enter the positive pressure end air inlet pipe D012 of the circulating fan D016 and enter the circulating air duct D013 system of the grain pile D014 to achieve fumigation and insecticide. The negative pressure airflow on the top of the grain pile D014 is connected to the return pipe D015 and returns to the circulating fan D016, forming a closed loop of circulating fumigation, thereby achieving effective utilization of residual gas and reducing toxic gas emissions.

[0064] The second vacuum feeder D022 is used for residual powder treatment of the original fumigation of the granary, and the powder collecting box D023 is used to receive the residual powder. Its treatment process is similar to the residue treatment in this case, except that the second inlet valve D002 and the second outlet valve D021 need to be closed, and the first inlet valve D027, the second outlet valve D020 and the feed valve D024 need to be opened to carry out the residue treatment. Furthermore, the phosphine tail gas treatment device D000 can not only deeply treat the residual powder generated by the technical equipment, but also be used to treat the residual powder originally picked up by manual operation.

[0065] The tops of the primary reaction tank D007 and the secondary reaction tank D008 are both equipped with air pressure valve gauges D018 to prevent over-high pressure safety explosion. The bottoms of the two reaction tanks are both provided with residual liquid discharge ports D009 to facilitate the removal of residual liquid after the reaction. This embodiment also adds an electric heater auxiliary device D006 to increase the reaction speed and thoroughness of the drugs in the two tanks and minimize the toxicity of the residual liquid.

[0066] The control center D026 is the control center of the whole machine. It mainly controls the air compressor D003 and two sets of vacuum feeders, two-stage reaction tanks and the solenoid valves of the inlet and outlet pipes, the electric heater auxiliary device D006 and the circulating fan D016. It is also equipped with a phosphine leakage prevention alarm device D025. Once there is a leak in the pipeline or joint, the phosphine alarm device D025 can immediately alarm and remind to ensure safe use.

[0067] The measurement and control module E000 is the master control center of the invention technology and is used to detect and control the entire system.

[0068] The measurement and control module E000 mainly includes a detection mechanism E001, an analysis and control center E004, a joint control center E005, an actuator E011 and an operating and display device E014.

[0069] The detection mechanism E001 is mainly responsible for collecting data from the PH3 concentration detector E002 and the temperature and humidity detector E003 inside the grain pile and in the pipeline. After analysis by the analysis and control center E004, the action is executed by the actuator E011.

[0070] The actuator E011 is mainly composed of solenoid valve EQ1E013, solenoid valve EQ2E012, solenoid valve EQ3E007, solenoid valve EQ4E008, solenoid valve EQ5E009 and solenoid valve EQ6E010, which respectively control the mixing cylinder A028, the turning cylinder A016, the moving cylinder B027, the push-pull cylinder B048, the upper cylinder C014 and the lower cylinder C015.

[0071] The joint control center E005 has a joint control chip controller E006, which communicates control information with the system display device E014, and controls the control center D026 of the processing module D000 to realize orderly operation of the entire control system and achieve safe and normal operation of the powder suction processing and circulation system.

[0072] The rack box F000 mainly includes an inner fixing bracket F017, an outer shell box F011, a wire passing pipe plate F012 and box fixing cards, namely an upper fixing card F010, a middle fixing card F009, a lower fixing card F006 and a heat insulation cotton F013.

[0073] The internal fixed bracket F017 is mainly used to install and fix the storage tank A004 and the turning mechanism A007 of the storage module A000, the primary turning and dividing mechanism and the secondary turning and dividing mechanism of the dividing module B000, and the phosphine generating chambers of the generating module C000.

[0074] The outer shell box F011 is mainly used to surround the storage module A000, the distribution module B000 and the generating module C000 into one body, and two air inlet pipes and two air outlet pipes are opened on both sides of the bottom to facilitate the connection to the air duct system of the positive pressure end of the original fumigation circulation fan of the granary. There are two ways to install the air inlet and outlet pipes. One is to install it on the left side of the warehouse: that is, the air inlet pipe F005 at the bottom of the left side of the equipment is the air inlet pipe, and the air outlet pipe F008 on the upper right side of the equipment is the air outlet pipe; the other is to install it on the right side of the warehouse: that is, the air inlet pipe F007 at the bottom of the right side of the equipment is the air inlet pipe, and the air outlet pipe F003 on the upper left side of the equipment is the air outlet pipe.

[0075] There are one wire-passing pipe disc F012 on each side, which are fixed on both sides of the upper end of the outer shell box F011 respectively. Each wire-passing pipe disc F012 is provided with 8 fixing holes F014, 8 air pipe holes F015, and 24 air pressure pipes F016, which are used to connect the air pipes of the cylinders in the storage module A000, the distribution module B000 and the generation module E000.

[0076] The bottom fixing card F006, the middle fixing card F009 and the upper fixing card F010 of the box body fix the box body to the wall from the bottom, middle and upper parts respectively.

[0077] The heat insulation cotton F103 is laid between the box and the wall to play the role of heat insulation and buffering. The area is equal to the back of the outer box.

[0078] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A phosphine gas generating system, characterized in that: include: A material storage module, the material storage module includes a material storage mechanism, a material discharge mechanism and a material drop mechanism; the material storage mechanism includes a material storage tank and a material storage cover connected to the material storage tank by a plurality of movable bolts, the central part of the material storage cover is equipped with a material guide pipe vertically upward at an angle of 30 to 45 degrees to the cover surface; the material discharge mechanism includes a material mixing cylinder arranged on the back of the material storage tank and a material mixer arranged inside the material storage tank and connected to the material mixing cylinder, a material drop opening is provided in the material storage tank, and the material mixer opens or closes the material drop opening under the drive of the material mixing cylinder; the material drop mechanism includes a material drop pipe connected to the material drop opening, a reserved pipe connected to the material drop pipe and a flip device capable of closing or opening the bottom opening of the material drop pipe, and the material drop pipe is arranged vertically downward at an angle of 30 to 45 degrees to the bottom surface of the material storage tank; A material distribution module, the material distribution module includes a material pushing mechanism, a material storage mechanism, a primary material turning mechanism and a secondary material turning mechanism; the material pushing mechanism is used to receive the material dropped by the material dropping mechanism and evenly distribute the material into 2n valve chambers through the pushing module, and the volume of each valve chamber is equal; the material storage mechanism is used to open or close the valve chamber, when the valve chamber is opened, the material in the 2n valve chambers enters the primary material turning mechanism, when the valve chamber is closed, the material is stored in the valve chamber; the primary material turning mechanism is used to receive the material in the 2n valve chambers and divide the material into 4n portions before entering the secondary material turning mechanism; the secondary material turning mechanism is used to divide the 4n portions of material received from the primary material turning mechanism into 8n portions of material; A generating module, comprising a plurality of phosphine generating chambers, wherein the plurality of phosphine generating chambers are fixed together by a top fixing plate and a bottom fixing plate, and each phosphine generating chamber comprises a keel mechanism for supporting, wherein a generating mechanism for generating phosphine gas, a material closing mechanism for preventing powder from falling, and a powder collecting mechanism for collecting powder are fixedly arranged inside the keel mechanism, and a dust isolation mechanism for closing the phosphine generating chamber is further arranged outside the keel mechanism; A processing module, including an air compression mechanism, a vacuum suction mechanism, an aluminum phosphide residue generating device, a fan circulation device and a control center; the air compression mechanism includes an air compressor and a high-pressure air supply pipe connected to the air compressor; the vacuum suction mechanism includes a first vacuum feeder and a second vacuum feeder arranged in parallel, the first vacuum feeder and the second vacuum feeder are connected through a high-pressure air supply pipe and a high-pressure air feed pipe, the first vacuum feeder is provided with a first inlet valve and a first outlet valve on both sides, the second vacuum feeder is provided with a second inlet valve and a second outlet valve on both sides, and the second vacuum feeder is connected A powder collecting box for receiving residual powder is connected, and a feeding valve is arranged between the powder collecting box and the second vacuum feeder; the aluminum phosphide residual material generating device comprises a primary reaction tank and a secondary reaction tank connected in series, the primary reaction tank is connected with a high-pressure gas material pipe, the primary reaction tank and the secondary reaction tank are connected through a guide pipe, the fan circulation device comprises a circulation fan connected with the secondary reaction tank, the circulation fan is connected with the circulation air duct system of the grain pile through the positive pressure end air inlet pipe and the return pipe, and the control center is electrically connected with the air compressor, the first vacuum feeder, the second vacuum feeder, the primary reaction tank, the secondary reaction tank and all valves; A measurement and control module, including a detection mechanism, an analysis and control center, a joint control center, an actuator and an operation and display device; the detection mechanism includes a PH3 concentration detector and a temperature and humidity detector arranged inside the grain pile and in the pipeline; the data collected by the detection mechanism is analyzed by the analysis and control center, and then the actuator performs the action; the actuator includes a solenoid valve for controlling each cylinder; a joint control chip controller is arranged in the joint control center, which communicates control information with the operation and display device and is connected to the control center of the processing module; A rack box, the rack box includes an inner fixing bracket, an outer box, a wire pipe tray and a box fixing card; the inner fixing bracket is used to install and fix the storage tank and the turning mechanism of the storage module, the first-level turning and dividing mechanism and the second-level turning and dividing mechanism of the distribution module, and each phosphine generating chamber of the generating module; the outer box surrounds the storage module, the distribution module and the generating module into one, and has two air inlet pipes and two air outlet pipes on both sides of the bottom.

2. A phosphine gas generating system according to claim 1, characterized in that: The flipping device includes a valve housing, a valve core, a valve shaft, a valve plate, a front shaft sleeve, a rear shaft sleeve, a driving arm, a movable connector, a flipping cylinder and a counterweight device. The lower end of the valve core is tightly fitted inside the upper end of the valve housing. Bushing mounting holes are opened on both sides of the left part of the valve housing. The valve shaft is opened with a groove, and a valve plate is installed in the middle. Both ends pass through the front shaft sleeve and the rear shaft sleeve and are prevented from axial movement by "O"-shaped retaining spring pins. The other end of the valve shaft is connected to the driving arm and connected to the movable connector. The movable connector is directly connected to one end of the flipping cylinder for pushing and pulling. The other end of the flipping cylinder is fixedly connected to the frame box. After the reserved tube is filled with medicinal materials, the flipping cylinder drives the driving arm connected to the valve shaft to move, and the valve plate installed on the valve shaft performs a flipping action.

3. A phosphine gas generating system according to claim 1, characterized in that: The pushing module includes a material distribution trough pipe, a screw assembly arranged in the material distribution trough pipe and a ratchet gear assembly for driving the screw assembly to rotate, the screw assembly includes a central shaft and a left screw and a right screw sleeved on the central shaft, the threads on the left screw and the right screw are arranged in opposite directions, the material distribution trough pipe is respectively provided with n valve chambers at the left screw and the right screw, the central shaft is respectively provided with a left gear tray and a right gear tray at the ends of the material distribution trough pipe, and the two ends of the central shaft are respectively supported by a left shaft seat and a right shaft seat.

4. A phosphine gas generating system according to claim 3, characterized in that: The ratchet gear assemblies are arranged at both ends of the central axis, and each ratchet gear assembly respectively includes a ratchet, a ratchet rod, a pawl and a stop pin. The ratchet is fixed on the central axis, and the stop pin is in contact with the ratchet and is arranged on the tooth pin fixing plate. One end of the ratchet rod is connected to the pull rod through a first Y-type connector, and the other end of the ratchet rod is connected to a pawl that can push the ratchet to rotate. The pull rod is connected to one end of the push-pull shaft through a second Y-type connector. The push-pull shaft sleeve is arranged in a linear bearing seat, and the other end of the push-pull shaft is connected and fixed to the end of the push-pull plate. An up and down displacement cylinder that can drive the push-pull shaft to move up and down is installed in the middle of the push-pull plate; a number of residual material chambers for receiving residual materials are also arranged on the left screw and the right screw on the material dividing trough pipe.

5. A phosphine gas generating system according to claim 3, characterized in that: The material storage and distribution mechanism includes a valve plate, a valve stem, a valve shaft sleeve, a push-pull rod and a fixed plate; the valve plate is connected to one end of the valve stem, and both sides of the valve stem are installed in the valve shaft sleeve, 2n valve stems are fixed on the push-pull rod together, and 2n valve shaft sleeves are fixed on the fixed plate together, and the fixed plate is provided with a push-pull rod and the valve plate that can drive the push-pull rod and the valve plate to move back and forth to realize the opening and discharging of the 2n valve chambers and the closing and storing of the materials.

6. A phosphine gas generating system according to claim 1, characterized in that: The first-level material turning and distributing mechanism and the second-level material turning and distributing mechanism respectively include a turning shell and an equal turning core arranged in the turning shell, the turning shell includes a material receiving pipe and a left material discharge pipe and a right material discharge pipe located at the lower end of the turning shell, the equal turning core includes a pointed part extending into the material receiving pipe and two material guide plates respectively located above the left material discharge pipe and the right material discharge pipe, and the middle part of the equal turning core is arranged inside the turning shell through a rotating shaft; the material receiving pipe of each turning shell in the first-level material turning and distributing mechanism is arranged at the material discharge port of each valve chamber, and the left material discharge pipe and the right material discharge pipe of each turning shell in the first-level material turning and distributing mechanism are respectively arranged at the material receiving pipe of each turning shell in the second-level material turning and distributing mechanism.

7. A phosphine gas generating system according to claim 1, characterized in that: The keel mechanism includes a plurality of keel rods, an upper solid block, a bottom material cup and a keel ring, the upper ends of the plurality of keel rods are fixed by the upper solid block, the upper solid block is fixedly arranged on the top fixing plate, the lower ends of the plurality of keel rods are passed through and fixed in the bottom material cup, each keel rod is fixedly connected to the upper solid block and the bottom material cup by screws, and the middle parts of the plurality of keel rods are fixedly connected by a plurality of keel rings; the generating mechanism includes a plurality of deliquescence disks fixed to the outside of the plurality of keel rods, a bulk material opening is provided in the center of the deliquescence disk; the material closing mechanism includes a middle solid cup sleeved under the bottommost deliquescence disk, a middle residue hole is provided in the center of the middle solid cup, and a sealable A middle discharge cone of the middle residual drop hole, the several keel rods pass through the middle solid cup and are fixedly connected to the middle solid cup by screws, a two-way cylinder is arranged in the keel mechanism, the upper piston rod of the two-way cylinder is connected to the middle discharge cone, and the middle discharge cone can follow the upper piston rod to open the middle residual drop hole; the powder collecting mechanism includes a vacuum feeder arranged below the bottom material cup, the vacuum feeder is connected to the bottom discharge hole in the center of the bottom material cup, the bottom material cup is also provided with a bottom discharge cone capable of blocking the bottom discharge hole, the bottom discharge cone is connected to the lower piston rod of the two-way cylinder; a bottom cover capable of covering the vacuum feeder is also connected below the bottom material cup, and the bottom material cup is fixed to the bottom fixing plate through a bottom cone ring.

8. A phosphine gas generating system according to claim 7, characterized in that: The center of the deliquescent dish is also provided with an expansion core fixedly connected to the keel ring. The length of the expansion core is the same as that of the deliquescent dish, and the cross-sectional area of ​​the expansion core is 1 / 3 of the cross-sectional area of ​​the center of the deliquescent dish.

9. A phosphine gas generating system according to claim 6, characterized in that: The dust-isolating mechanism comprises a powder-isolating cloth capable of covering the entire keel mechanism, and the powder-isolating cloth is respectively fixed in the cloth-fixing ring grooves of the cloth-fixing plate and the bottom material cup through an upper steel hoop clamp and a lower steel hoop clamp.

10. A phosphine gas generating system according to claim 1, characterized in that: The primary reaction tank and the secondary reaction tank are also connected to an electric heater auxiliary device, and the control center is electrically connected to the electric heater auxiliary device.

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