Three-dimensional circulation fumigation device for granary
By introducing a stirring rod and a filtration mechanism into the three-dimensional circulating fumigation device for grain silos, the problem of harmful gas pollution after the fumigation device is completed is solved, and the gas is effectively filtered and purified, thus protecting the environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN HONGRUN STORAGE EQUIP CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-05-26
AI Technical Summary
After the fumigation equipment finishes working, harmful gases such as formaldehyde and ethylene oxide in the fumigation chamber pollute the air and emit odors, affecting the environment.
A three-dimensional circulating fumigation device for grain storage was designed, comprising a fumigation machine, a fumigation chamber, a stirring rod, a filtration mechanism, and a fan. The stirring rod evenly distributes the fumigation gas, and activated carbon and polyester fiber filters are used to filter and purify harmful gases.
It effectively filters and purifies harmful gases in the fumigation chamber, preventing air pollution and odor emissions, and protecting the environment.
Smart Images

Figure CN224267994U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fumigation devices, specifically a three-dimensional circulating fumigation device for grain warehouses. Background Technology
[0002] A fumigation device is a fumigation equipment used in enclosed spaces. It uses a forced gas circulation system to distribute the fumigant evenly to every corner of the target area, thereby improving the insecticidal, sterilization, or disinfection effects.
[0003] After the fumigation equipment finishes operating, the fumigation chamber contains fumigation gas. This gas has a complex composition and contains large amounts of harmful substances such as formaldehyde and ethylene oxide. These gases not only severely pollute the air and damage the surrounding ecological environment, but also emit a pungent odor, affecting the working area environment. Utility Model Content
[0004] To address the shortcomings of existing technologies, after the fumigation device has finished operating, the fumigation chamber contains fumigation gas. This gas has a complex composition and contains a large amount of harmful substances such as formaldehyde and ethylene oxide. These gases not only seriously pollute the air and damage the surrounding ecological environment, but also emit a pungent odor, affecting the working area environment. This utility model proposes a three-dimensional circulating fumigation device for grain warehouses.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a three-dimensional circulating fumigation device for grain storage, including a fumigation device body, the fumigation device body including a fumigation machine, a fumigation box fixedly connected to one side of the fumigation machine, a placement tank fixedly connected to the inner cavity of the fumigation box, a sealing door movably connected to one side of the fumigation box via a hinge, a motor fixedly connected to the other side of the fumigation box, a rotating shaft fixedly connected to the output end of the motor, a stirring rod fixedly connected to the surface of the rotating shaft, and a plurality of stirring rods, the surface of the stirring rods being movably connected to the inner cavity of the placement tank;
[0006] A filtration mechanism is provided on one side of the fumigation chamber. The filtration mechanism includes a fixed frame, one side of which is fixedly connected to one side of the fumigation chamber. A fan is fixedly connected to one side of the inner cavity of the fixed frame. The output end of the fan is fixedly connected to an output pipe, one end of which is fixedly connected to the inner cavity of the fumigation chamber. The input end of the fan is fixedly connected to a connecting pipe, one end of which is fixedly connected to a filter box. Two mounting plates are movably connected to one side of the inner cavity of the filter box. A first filter screen, made of activated carbon, is fixedly connected to one side of each mounting plate.
[0007] Preferably, a sealing gasket is movably connected to one side of the mounting plate, and one side of the sealing gasket is fixedly connected to one side of the inner cavity of the filter box.
[0008] Preferably, a second filter screen is fixedly connected to one side of another mounting plate, and the second filter screen is made of polyester fiber.
[0009] Preferably, a connecting plate is fixedly connected to one side of the filter box. There are four connecting plates, arranged in pairs. A fixing column is movably connected to the inner cavity of the connecting plate. A fixing ring is fixedly connected to one side of the fixing column, and a pull rod is fixedly connected to one side of the fixing ring.
[0010] Preferably, a connecting post is fixedly connected to one side of the mounting plate, a connecting block is fixedly connected to one end of the connecting post, a fixing groove is provided on one side of the connecting block, and one end of the fixing post is inserted into the fixing groove.
[0011] Preferably, a limiting block is fixedly connected to the other end of the fixed column, and one side of the limiting block is movably connected to one side of the connecting plate.
[0012] Preferably, a spring is slidably fitted on the surface of the fixing column, with one end of the spring fixedly connected to one side of the fixing ring and the other end of the spring fixedly connected to the other side of the connecting plate.
[0013] The advantages of this utility model are:
[0014] This invention utilizes a fan to absorb gas from inside the fumigation chamber. The gas is then transported to the fan's interior through an output pipe, and subsequently to the filter chamber. After effective filtration by the first filter screen, the gas is discharged to the outside, achieving a filtration effect. This solves the problem of the complex composition of the fumigation gas inside the chamber after the fumigation device has finished operating. This gas contains a large amount of harmful substances such as formaldehyde and ethylene oxide, which not only seriously pollute the air and damage the surrounding ecological environment but also emit a pungent odor, affecting the working area environment. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the connection of the stirring rod structure of this utility model;
[0018] Figure 3This is a schematic diagram of the connecting pipe structure of this utility model;
[0019] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structural connection at point A;
[0020] Figure 5 This is a cross-sectional view of the filter box structure of this utility model.
[0021] In the diagram: 1. Fumigation device body; 101. Fumigation machine; 102. Fumigation box; 103. Motor; 104. Sealing door; 105. Rotating shaft; 106. Placement tank; 107. Stirring rod; 2. Filtration mechanism; 201. Fan; 202. Output pipe; 203. Fixing frame; 204. Connecting pipe; 205. Filter box; 206. First filter screen; 207. Mounting plate; 208. Sealing gasket; 209. Connecting column; 210. Connecting block; 211. Connecting plate; 212. Fixing column; 213. Fixing ring; 214. Pull rod; 215. Spring; 216. Limiting block; 217. Fixing groove; 218. Second filter screen. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0023] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0024] This application discloses a three-dimensional circulating fumigation device for grain warehouses. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4 A three-dimensional circulating fumigation device for grain storage includes a fumigation device body 1, which includes a fumigation machine 101. A fumigation box 102 is fixedly connected to one side of the fumigation machine 101. A placement tank 106 is fixedly connected to the inner cavity of the fumigation box 102. A sealing door 104 is movably connected to one side of the fumigation box 102 via a hinge. A motor 103 is fixedly connected to the other side of the fumigation box 102. A rotating shaft 105 is fixedly connected to the output end of the motor 103. A stirring rod 107 is fixedly connected to the surface of the rotating shaft 105. There are multiple stirring rods 107, and the surface of the stirring rod 107 is movably connected to the inner cavity of the placement tank 106.
[0025] A filter mechanism 2 is provided on one side of the fumigation chamber 102. The filter mechanism 2 includes a fixed frame 203. One side of the fixed frame 203 is fixedly connected to one side of the fumigation chamber 102. A fan 201 is fixedly connected to one side of the inner cavity of the fixed frame 203. An output pipe 202 is fixedly connected to the output end of the fan 201. One end of the output pipe 202 is fixedly connected to the inner cavity of the fumigation chamber 102. A connecting pipe 204 is fixedly connected to the input end of the fan 201. One end of the connecting pipe 204 is fixedly connected to a filter box 205. An installation plate 207 is movably connected to one side of the inner cavity of the filter box 205. There are two installation plates 207. A first filter screen 206 is fixedly connected to one side of the installation plate 207. The material of the first filter screen 206 is activated carbon.
[0026] Reference Figure 4 A sealing gasket 208 is movably connected to one side of the mounting plate 207. One side of the sealing gasket 208 is fixedly connected to one side of the inner cavity of the filter box 205. The sealing gasket 208 forms a sealing barrier, which can effectively prevent gas from leaking through the gap between the mounting plates 207.
[0027] Reference Figure 5 Another mounting plate 207 has a second filter screen 218 fixedly connected to one side. The second filter screen 218 is made of polyester fiber. Through the setting of the second filter screen 218, and the fact that the second filter screen 218 can form a dense filter layer, it can intercept tiny debris and dust, and prevent debris and dust from clogging the inside of the filter box 205.
[0028] Reference Figure 4 A connecting plate 211 is fixedly connected to one side of the filter box 205. There are four connecting plates 211, which are arranged in pairs. A fixing column 212 is movably connected to the inner cavity of the connecting plate 211. A fixing ring 213 is fixedly connected to one side of the fixing column 212. A pull rod 214 is fixedly connected to one side of the fixing ring 213. The connecting plate 211 can support the position of the fixing column 212, making the movement of the connecting plate 211 more stable.
[0029] Reference Figure 4 A connecting post 209 is fixedly connected to one side of the mounting plate 207, and a connecting block 210 is fixedly connected to one end of the connecting post 209. A fixing groove 217 is provided on one side of the connecting block 210, and one end of the fixing post 212 is inserted into the inside of the fixing groove 217. By setting the fixing groove 217, the position of the mounting plate 207 can be fixed, so as to prevent the mounting plate 207 from detaching from the inside of the filter box 205 during operation, thereby affecting the operation of the first filter screen 206 and the second filter screen 218.
[0030] Reference Figure 4The other end of the fixed column 212 is fixedly connected to the limiting block 216. One side of the limiting block 216 is movably connected to one side of the connecting plate 211. By setting the limiting block 216, the movement of the fixed column 212 can be limited, so as to prevent the fixed column 212 from leaving the interior of the connecting plate 211, thereby affecting the fixing of the fixed column 212 to the mounting plate 207.
[0031] Reference Figure 4 A spring 215 is slidably sleeved on the surface of the fixed column 212. One end of the spring 215 is fixedly connected to one side of the fixed ring 213, and the other end of the spring 215 is fixedly connected to the other side of the connecting plate 211. With the setting of the spring 215, when the fixed ring 213 moves, the spring 215 is stretched and deformed. After the spring 215 loses its stretching force, it can drive the moving column 214 to reset, so that the fixed column 212 fits into the interior of the fixed groove 217.
[0032] Working principle: After placing the grain into the storage tank 106, the sealing door 104 is closed, and the fumigation machine 101 is started. The fumigation machine 101 consists of a vaporization component, a chemical storage unit, and a fan. The vaporization component rapidly converts the liquid fumigant into a gaseous state through electric heating. The vaporized fumigant gas is then transported to the interior of the fumigation chamber 102 through a pipe connected to the fumigation machine 101 by the fan. Since the heated fumigant easily produces harmful substances such as formaldehyde and ethylene oxide, the motor 103 is then turned on, driving the rotating shaft 1. 05. Rotation: The rotating shaft 105 drives the stirring rod 107 to rotate, causing the grain in the storage tank 106 to tumble fully, ensuring that each grain is evenly contacted by the fumigation gas. The operator pulls the connecting block 210 to move the connecting column 209, which in turn moves the mounting plate 207. The mounting plate 207 then moves the first filter screen 206 and the second filter screen 218 into the filter box 205. Once the first filter screen 206 and the second filter screen 218 reach the appropriate positions, the operator pulls the lever 214 to move the fixed... The fixed ring 213 moves, simultaneously moving the fixed column 212. The movement of the fixed ring 213 causes the spring 215 to be stretched and deformed. After the spring 215 loses its tension, it can drive the fixed column 212 to return to its original position, allowing the fixed column 212 to fit snugly into the fixed groove 217. This fixes the positions of the first filter screen 206 and the second filter screen 218, preventing them from shifting under external force. Then, the fan 201 is started, and its suction removes residual formaldehyde and epoxy resin from the fumigation chamber 102. Gases such as alkanes are drawn into the blower through the output pipe 202. Then, the blower 201 continuously operates, pressurizing the gas and pushing it through the output end to the inside of the connecting pipe 204. The gas is then transported to the inside of the filter box 205 through the connecting pipe 204. When the gas passes through the second filter screen 218, the particles and dust in the gas are adsorbed and filtered by the second filter screen 218. Then, when the gas passes through the first filter screen 206, the toxic gases are filtered by the first filter screen 206 to prevent the gas from polluting the environment.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A three-dimensional circular flow fumigation device for granaries, comprising a fumigation device body (1), characterized in that: The fumigation device body (1) includes a fumigation machine (101), a fumigation box (102) is fixedly connected to one side of the fumigation machine (101), a placement tank (106) is fixedly connected to the inner cavity of the fumigation box (102), a sealing door (104) is movably connected to one side of the fumigation box (102) via a hinge, a motor (103) is fixedly connected to the other side of the fumigation box (102), a rotating shaft (105) is fixedly connected to the output end of the motor (103), a stirring rod (107) is fixedly connected to the surface of the rotating shaft (105), and there are multiple stirring rods (107), the surface of the stirring rods (107) is movably connected to the inner cavity of the placement tank (106); A filtration mechanism (2) is provided on one side of the fumigation box (102). The filtration mechanism (2) includes a fixing frame (203). One side of the fixing frame (203) is fixedly connected to one side of the fumigation box (102). A fan (201) is fixedly connected to one side of the inner cavity of the fixing frame (203). An output pipe (202) is fixedly connected to the output end of the fan (201). One end of the output pipe (202) is fixedly connected to the inner cavity of the fumigation box (102). A connecting pipe (204) is fixedly connected to the input end of the fan (201). One end of the connecting pipe (204) is fixedly connected to a filter box (205). An installation plate (207) is movably connected to one side of the inner cavity of the filter box (205). There are two installation plates (207). A first filter screen (206) is fixedly connected to one side of the installation plate (207). The material of the first filter screen (206) is activated carbon.
2. The three-dimensional circulating fumigation device for granaries according to claim 1, characterized in that: A sealing gasket (208) is movably connected to one side of the mounting plate (207), and one side of the sealing gasket (208) is fixedly connected to one side of the inner cavity of the filter box (205).
3. The three-dimensional circulating fumigation device for granaries according to claim 1, characterized in that: A second filter screen (218) is fixedly connected to one side of another mounting plate (207), the second filter screen (218) being made of polyester fiber.
4. The three-dimensional circulating fumigation device for granaries according to claim 1, characterized in that: A connecting plate (211) is fixedly connected to one side of the filter box (205). There are four connecting plates (211), which are arranged in pairs. A fixing column (212) is movably connected to the inner cavity of the connecting plate (211). A fixing ring (213) is fixedly connected to one side of the fixing column (212). A pull rod (214) is fixedly connected to one side of the fixing ring (213).
5. The three-dimensional circulating fumigation device for granaries according to claim 4, characterized in that: A connecting post (209) is fixedly connected to one side of the mounting plate (207), and a connecting block (210) is fixedly connected to one end of the connecting post (209). A fixing groove (217) is provided on one side of the connecting block (210), and one end of the fixing post (212) is inserted into the inside of the fixing groove (217).
6. The three-dimensional circulating fumigation device for granaries according to claim 4, characterized in that: The other end of the fixed column (212) is fixedly connected to a limiting block (216), and one side of the limiting block (216) is movably connected to one side of the connecting plate (211).
7. The three-dimensional circulating fumigation device for granaries according to claim 4, characterized in that: The surface of the fixed column (212) is sleeved with a spring (215), one end of the spring (215) is fixedly connected to one side of the fixed ring (213), and the other end of the spring (215) is fixedly connected to the other side of the connecting plate (211).