Fumigating device for grain storage

Abstract

The fumigation device comprises a granary, a spiral blade, a hydrogen phosphide gas box and a gas treatment box, the spiral blade is installed on the outer wall of a rotating rod in the granary, an annular pipe is installed at the bottom of the granary, gas outlet pipes are installed on the inner wall of the annular pipe at equal intervals, and the gas treatment box is installed on the outer wall of the granary. The phosphine gas tank is arranged on one side of the granary, a first gas pump is installed at the top end of the phosphine gas tank, a gas supply pipeline is installed on one side of the first gas pump, the top end and the bottom end of the gas supply pipeline are used for communicating the granary and the phosphine gas tank correspondingly, and the gas treatment tank is arranged on the other side of the granary. And a first treatment cavity and a second treatment cavity are formed in the gas treatment box, a second gas pump is installed at the top end of the gas treatment box, and a gas cylinder is arranged in the second treatment cavity. The fumigation device not only is more comprehensive and thorough in fumigation and high in fumigation efficiency, but also can be used for treating tail gas, and is small in pollution and harm.

Description

Technical Field

[0001] The utility model relates to the technical field of grain storage, in particular to a fumigation device used for grain storage. Background Art

[0002] During the storage process, grain is susceptible to pests due to various factors, which will not only cause a large amount of grain loss, but also seriously affect the quality of the grain, which is very harmful. Therefore, during the grain storage process, it is necessary to effectively control and kill the stored grain pests. At present, the main means of preventing and controlling stored grain pests is to use phosphine to fumigate the grain. Phosphine is a colorless, highly toxic and flammable gas with good diffusion and volatility. It is a fumigant with good performance and is widely used in the daily pest control operations of grain storage enterprises in my country.

[0003] During fumigation, phosphine gas moves slowly in the granary and grains are piled together, making it difficult for phosphine gas to fully contact the grains. The grain fumigation is not comprehensive and the fumigation efficiency is low. Moreover, after using phosphine to fumigate grains, it is inconvenient to treat the phosphine exhaust gas. Direct discharge of the exhaust gas will pollute the air and endanger the health of workers. Therefore, improvement is urgently needed. Utility Model Content

[0004] The purpose of the utility model is to provide a fumigation device for grain storage to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fumigation device for grain storage, comprising a granary, a spiral blade, a phosphine gas box and a gas treatment box, the spiral blade being installed on the outer wall of a rotating rod inside the granary, an annular tube being installed at the bottom of the granary, and air outlet pipes with equal intervals are installed on the inner wall of the annular tube, the phosphine gas box is arranged on one side of the granary, and a first air pump is installed at the top of the phosphine gas box, and an air supply pipeline is installed on one side of the first air pump, the top and bottom ends of the air supply pipeline are respectively used for communication with the granary and the phosphine gas box, the gas treatment box is arranged on the other side of the granary, and a first processing chamber and a second processing chamber are respectively arranged inside the gas treatment box, a second air pump is installed at the top of the gas treatment box, a gas cylinder is arranged inside the second processing chamber, and the top of the gas cylinder is connected to the first processing chamber through a gas supply pipe.

[0006] Preferably, a rotary drive member is installed at the bottom of the granary, and an output end of the rotary drive member is fixedly connected to the rotating rod.

[0007] Preferably, a gas detector is installed on the outer wall of the granary top to facilitate the detection of the phosphine gas concentration inside the granary.

[0008] Preferably, the bottom of the granary above the annular tube is provided with small holes at equal intervals.

[0009] Preferably, the input end of the first air pump is connected to the air supply pipeline, the output end of the first air pump is connected to the annular tube, and a first valve and a second valve are respectively installed inside the air supply pipeline at the position of the first air pump.

[0010] Preferably, the input end of the second air pump is communicated with the granary, and the output end of the second air pump is communicated with the first processing chamber.

[0011] Preferably, an exhaust pipe is installed on the outer wall of the gas processing box at the position of the first processing chamber.

[0012] Preferably, a solenoid valve is installed inside the gas pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The first air pump transports the phosphine gas in the phosphine gas box to the annular pipe, and the phosphine gas is discharged from the air outlet pipe and reaches the inside of the granary through the small hole. The phosphine gas goes up inside the granary and fully contacts the grain. Then, the first valve is closed and the second valve is opened, so that the phosphine gas enters the air delivery pipeline and circulates into the granary. The first air pump forces the phosphine gas to circulate inside the granary. At the same time, the rotating drive member drives the rotating rod to rotate, and the rotating rod drives the spiral blade to rotate. The spiral blade lifts the grain, so that the grain at the bottom of the granary is continuously turned upward. The phosphine gas is allowed to fully contact with the grain, and the fumigation is more comprehensive and thorough with high fumigation efficiency. The gas detector detects the phosphine gas concentration inside the granary, and the second air pump is started to pump the phosphine gas inside the granary into the first processing chamber inside the gas treatment box. The phosphine gas contacts and absorbs the potassium permanganate solution. During this process, the valve inside the gas pipe is opened, so that the inert gas inside the gas cylinder is transported to the first processing chamber to neutralize the exhaust gas and dilute the phosphine gas, thereby reducing the harm and pollution of the exhaust gas, thereby reducing the pollution to the air and the harm to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is an enlarged structural diagram of a granary of the utility model;

[0017] Figure 3 It is a schematic diagram of the enlarged structure of the annular tube of the utility model from top view;

[0018] Figure 4 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 5 It is a schematic diagram of an enlarged side cross-sectional structure of a gas processing box of the utility model.

[0020] In the figure: 1. granary; 101. small hole; 2. rotating rod; 3. spiral blade; 4. phosphine gas box; 5. first air pump; 6. second air pump; 7. gas treatment box; 701. first treatment chamber; 702. second treatment chamber; 8. rotating drive member; 9. annular pipe; 901. air outlet pipe; 10. gas detector; 11. air supply pipeline; 1101. first valve; 1102. second valve; 12. gas pipe; 13. gas cylinder. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0022] See also Figure 1-5 The utility model provides an embodiment: a fumigation device for grain storage, comprising a grain bin 1, a spiral blade 3, a phosphine gas box 4 and a gas processing box 7, wherein the spiral blade 3 is mounted on the outer wall of a rotating rod 2 inside the grain bin 1, an annular tube 9 is mounted at the bottom of the grain bin 1, and an air outlet pipe 901 with equal spacing is mounted on the inner wall of the annular tube 9;

[0023] The phosphine gas tank 4 is arranged on one side of the granary 1, and a first air pump 5 is installed on the top of the phosphine gas tank 4, and an air supply pipeline 11 is installed on one side of the first air pump 5, and the top and bottom ends of the air supply pipeline 11 are respectively used for communication with the granary 1 and the phosphine gas tank 4;

[0024] The gas processing box 7 is arranged at the other side of the granary 1, and the first processing chamber 701 and the second processing chamber 702 are respectively arranged inside the gas processing box 7, the second air pump 6 is installed at the top of the gas processing box 7, and the gas cylinder 13 is arranged inside the second processing chamber 702, and the top of the gas cylinder 13 is connected with the first processing chamber 701 through the gas delivery pipe 12;

[0025] A rotary drive member 8 is installed at the bottom of the granary 1, and the output end of the rotary drive member 8 is fixedly connected to the rotating rod 2;

[0026] Specifically, the first air pump 5 delivers the phosphine gas in the phosphine gas box 4 to the annular pipe 9, and the phosphine gas is discharged from the air outlet pipe 901 and reaches the inside of the granary 1 through the small hole 101. The phosphine gas ascends inside the granary 1 and fully contacts the grain. Then, the first valve 1101 is closed and the second valve 1102 is opened, so that the phosphine gas enters the air delivery pipeline 11 and circulates into the granary 1. The first air pump 5 forces the phosphine gas to circulate inside the granary 1. At the same time, the rotary drive member 8 drives the rotating rod 2 to rotate, and the rotating rod 2 drives the spiral blade 3 to rotate. The spiral blade 3 lifts the grain, so that the grain at the bottom of the granary 1 is constantly turned upward, so that the phosphine gas fully contacts the grain, and the fumigation is more comprehensive and thorough, and the fumigation efficiency is high.

[0027] A gas detector 10 is installed on the outer wall of the top of the granary 1;

[0028] The bottom of the granary 1 above the annular tube 9 is provided with small holes 101 at equal intervals;

[0029] The input end of the first air pump 5 is connected to the air delivery pipeline 11, the output end of the first air pump 5 is connected to the annular tube 9, and the first valve 1101 and the second valve 1102 are respectively installed inside the air delivery pipeline 11 at the position of the first air pump 5;

[0030] The input end of the second air pump 6 is connected to the granary 1, and the output end of the second air pump 6 is connected to the first processing chamber 701;

[0031] Specifically, the gas detector 10 detects the concentration of phosphine gas inside the granary 1, and starts the second gas pump 6 to pump the phosphine gas inside the granary 1 into the first processing chamber 701 inside the gas processing box 7, and the phosphine gas contacts and absorbs the potassium permanganate solution. During this process, the valve inside the gas pipe 12 is opened, so that the inert gas inside the gas cylinder 13 is transported to the first processing chamber 701 to neutralize the tail gas, dilute the phosphine gas, so that the exhaust gas is less harmful and less polluting, thereby reducing the pollution to the air and the harm to the human body;

[0032] An exhaust pipe is installed on the outer wall of the gas processing box 7 at the position of the first processing chamber 701;

[0033] A solenoid valve is installed inside the gas delivery pipe 12 .

[0034] When the embodiment of the present application is in use: First, the first air pump 5 conveys the phosphine gas inside the phosphine gas tank 4 to the annular pipe 9. The phosphine gas is discharged from the air outlet pipe 901 and reaches the inside of the granary 1 through the small holes 101. The phosphine gas rises inside the granary 1 and comes into full contact with the grains. Then, the first valve 1101 is closed and the second valve 1102 is opened, so that the phosphine gas enters the air supply pipeline 11 and circulates into the granary 1. The first air pump 5 forces the phosphine gas to circulate inside the granary 1. At the same time, the rotation driving member 8 drives the rotating rod 2 to rotate, the rotating rod 2 drives the spiral blade 3 to rotate, and the spiral blade 3 lifts the grains, so that the grains at the bottom of the granary 1 are continuously turned upward, making the phosphine gas fully contact with the grains, the fumigation is more comprehensive and thorough, and the fumigation efficiency is high. Finally, the gas detector 10 detects the concentration of phosphine gas inside the granary 1, and the second air pump 6 is started to pump the phosphine gas inside the granary 1 into the first treatment chamber 701 inside the gas treatment tank 7. The phosphine gas contacts and is absorbed by the potassium permanganate solution. During this process, the valve inside the air delivery pipe 12 is opened, so that the inert gas inside the gas cylinder 13 is conveyed into the first treatment chamber 701 to neutralize the tail gas, diluting the phosphine gas, so that the discharged tail gas has little harm and little pollution, reducing the air pollution and harm to the human body.

Claims

1. A fumigation device for grain storage, characterized in that: The invention comprises a granary (1), a spiral blade (3), a phosphine gas box (4) and a gas processing box (7), wherein the spiral blade (3) is mounted on the outer wall of a rotating rod (2) inside the granary (1), an annular tube (9) is mounted at the bottom of the granary (1), and gas outlet pipes (901) are mounted at equal intervals on the inner wall of the annular tube (9), the phosphine gas box (4) is arranged on one side of the granary (1), and a first air pump (5) is mounted on the top of the phosphine gas box (4), and a gas delivery pipeline (11) is mounted on one side of the first air pump (5). ), the top and bottom ends of the gas delivery pipeline (11) are respectively used for communicating with the granary (1) and the phosphine gas box (4); the gas processing box (7) is arranged on the other side of the granary (1), and a first processing chamber (701) and a second processing chamber (702) are respectively arranged inside the gas processing box (7); a second air pump (6) is installed at the top of the gas processing box (7), a gas cylinder (13) is arranged inside the second processing chamber (702), and the top end of the gas cylinder (13) is communicated with the first processing chamber (701) via a gas delivery pipe (12).

2. A fumigation device for grain storage according to claim 1, characterized in that: A rotating drive member (8) is installed at the bottom of the granary (1), and the output end of the rotating drive member (8) is fixedly connected to the rotating rod (2).

3. A fumigation device for grain storage according to claim 1, characterized in that: A gas detector (10) is installed on the outer wall of the top of the granary (1).

4. A fumigation device for grain storage according to claim 1, characterized in that: The bottom of the granary (1) above the annular tube (9) is provided with small holes (101) at equal intervals.

5. A fumigation device for grain storage according to claim 1, characterized in that: The input end of the first air pump (5) is in communication with the air supply pipeline (11), the output end of the first air pump (5) is in communication with the annular tube (9), and a first valve (1101) and a second valve (1102) are respectively installed inside the air supply pipeline (11) at the position of the first air pump (5).

6. A fumigation device for grain storage according to claim 1, characterized in that: The input end of the second air pump (6) is in communication with the granary (1), and the output end of the second air pump (6) is in communication with the first processing chamber (701).

7. A fumigation device for grain storage according to claim 1, characterized in that: An exhaust pipe is installed on the outer wall of the gas processing box (7) at the position of the first processing chamber (701).

8. A fumigation device for grain storage according to claim 1, characterized in that: A solenoid valve is installed inside the gas delivery pipe (12).

Images