A gas circulation device of a special circulation fumigation system for grain depot

Abstract

The utility model discloses a gas circulation device of ring flow fumigation system special for granary belongs to ring flow device field, including flat warehouse, one end of flat warehouse is connected with ring flow main pipe no.

Description

Technical Field

[0001] This utility model relates to the field of circulation device technology, specifically a gas circulation device for a special circulation fumigation system for grain depots. Background Technology

[0002] Fumigation of grain warehouses is an important part of the grain storage process. It can effectively prevent grain pests and mold, and ensure the quality and safety of the grain.

[0003] An investigation revealed that a utility model patent (publication number: CN222516017U) discloses an external dual-pipe circulation device for grain warehouses. This device includes a flat warehouse, a dual-pipe circulation system, a phosphine gas generator, and a gas recovery unit. The dual-pipe circulation system includes circulation branch pipes horizontally connected to two ventilation openings of the flat warehouse, and two longitudinal circulation main pipes are arranged on the exterior of the flat warehouse. This utility model, by setting up a dual-pipe circulation system, a gas recovery unit, and sealed connecting pipes, achieves gas circulation through the external dual-pipe circulation system in conjunction with a circulation fan. This allows the fumigation gas to diffuse evenly and quickly into the grain pile, ensuring uniform distribution of phosphine gas within the grain warehouse, achieving efficient and uniform fumigation, and improving fumigation quality.

[0004] Although the aforementioned patent removes impurities such as dust and fine grain particles carried in the recovered gas through the filter box, the filter box may not be able to completely remove impurities from the recovered gas. Long-term use may cause condenser blockage, affecting recovery efficiency and effectiveness.

[0005] Therefore, this utility model provides a gas circulation device for a special circulating fumigation system for grain depots to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved This utility model provides a gas circulation device for a special circulating fumigation system for grain depots, aiming to solve the problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: Preferably, the device includes a flat warehouse, one end of which is connected to a circulating main pipe I via a plug-in sealing connection. The other end of the circulating main pipe I is fixedly connected to a circulating fan. The other end of the circulating fan is fixedly connected to a circulating main pipe II. The other end of the circulating main pipe II is connected to a circulating branch pipe via a threaded sealing connection. Both ends of the circulating branch pipe are connected to ventilation openings via plug-in sealing connections. The bottom end of the circulating main pipe II is connected to a recovery pipe via an open weld sealing connection. The other end of the recovery pipe is fixedly connected to a cylinder. The outlet of the recovery pipe is close to the inner wall of one end of the cylinder. A cone is fixedly connected to the bottom of the cylinder. A discharge pipe is provided in the middle of the inner cavity of the cylinder and extends upward to the outside of the cylinder. A filter device is provided on one side of the cylinder.

[0008] Preferably, the filtration device includes a connecting pipe, one end of which is sealed to a discharge pipe, and the other end of which is fixedly connected to a dust collection box. A filter plate is fixedly connected to the inner wall of the dust collection box, and a plurality of through holes are opened in the filter plate. Filter bags are installed in the through holes, and a sealing pipe is threadedly connected to the top of the dust collection box.

[0009] Preferably, a flange is fixedly connected to the bottom of the cone, and a dust outlet pipe is bolted to the bottom of the flange. A dust collection box is threaded to the bottom of the dust outlet pipe.

[0010] Preferably, the top of the filter bag is fitted with a retaining ring, and a retaining block is fixedly attached to the top of the retaining ring.

[0011] Preferably, a condenser and a storage tank are sequentially connected to the sealing pipe, and one side wall of the condenser and the storage tank is fixedly connected to the square warehouse.

[0012] Preferably, an electric valve one is provided on the first circulating main pipe, and an electric valve two is provided on the second circulating main pipe.

[0013] Preferably, the dust collection box is equipped with a drawer for dust collection.

[0014] (III) Beneficial Effects 1. In this utility model, by setting up a circulating main pipe with one end fixed to a circulating fan, and the other end of the circulating fan fixed to a circulating main pipe II, and the other end of the circulating main pipe II connected to a circulating branch pipe through a threaded seal, the fixed connection between the circulating fan and the circulating main pipe I and circulating main pipe II forms a stable power transmission channel, reduces airflow resistance, ensures efficient flow of fumigation gas in the pipe, and then evenly diffuses it to the grain pile in the flat warehouse, improving the uniformity of fumigation. By setting up a recovery pipe with one end fixed to a cylinder and the bottom of the cylinder fixed to a cone, the airflow rotates in the cylinder and cone, and the air particles fall along the wall under the action of centrifugal force, achieving preliminary gas-solid separation.

[0015] 2. In this utility model, a discharge pipe is connected to the dust collection box via a connecting pipe in a sealed manner. A filter plate is fixedly attached to the inner wall of the dust collection box. The filter plate has through holes and a filter bag is built in. The fixed connection between the filter plate and the dust collection box provides stable support for the filter bag. The filter bag can accurately intercept residual tiny impurities in the gas, solving the problem of condenser blockage caused by incomplete filtration in traditional filter boxes and improving subsequent recovery efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the filter component in this utility model; Figure 3 This is a schematic diagram of the structure of the collecting component in this utility model; Figure 4 This is a structural schematic diagram of the quick-release component in this utility model.

[0017] In the picture: 1. Flat warehouse; 11. Main circulation pipe 1; 12. Circulation fan; 13. Main circulation pipe 2; 14. Circulation branch pipe; 15. Ventilation outlet; 16. Recovery pipe; 17. Cylinder; 18. Cone; 19. Discharge pipe; 2. Connecting pipe; 21. Dust collection box; 22. Filter plate; 23. Filter bag; 24. Sealing pipe; 3. Flange; 31. Dust outlet pipe; 32. Dust collection box; 4. Clip ring; 41. Clip block; 5. Condenser; 51. Storage tank; 6. Electric valve 1; 61. Electric valve 2; 7. Drawer dust collection. Detailed Implementation

[0018] 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 protection scope of the present utility model.

[0019] This utility model provides a gas circulation device for a special circulating fumigation system for grain depots, such as... Figure 1-4As shown, the system includes a flat warehouse 1. One end of the flat warehouse 1 is connected to a circulating main pipe 11 via a plug-in seal. The other end of the circulating main pipe 11 is fixedly connected to a circulating fan 12. The other end of the circulating fan 12 is fixedly connected to a circulating main pipe 13. The other end of the circulating main pipe 13 is connected to a circulating branch pipe 14 via a threaded seal. Both ends of the circulating branch pipe 14 are connected to vents 15 via plug-in seals. The bottom end of the circulating main pipe 13 is connected to a recovery pipe 16 via a welded seal. The other end of the recovery pipe 16 is fixedly connected to a cylinder 17. The outlet of the recovery pipe 16 is close to the inner wall of one end of the cylinder 17. A cone 18 is fixedly connected to the bottom of the cylinder 17. An exhaust pipe 19 is provided in the middle of the inner cavity of the cylinder 17 and extends upward to the outside of the cylinder 17. A filter device is provided on one side of the cylinder 17. During operation, the filter box filters out dust, fine grain particles, and other impurities carried in the recovered gas. However, since the filter box may not be able to completely remove impurities in the recovered gas, long-term use may cause condenser blockage, affecting recovery efficiency and effect. By setting the other end of the circulating main pipe 11 to be fixed to the circulating fan 12, and the other end of the circulating fan 12 to be fixed to the circulating main pipe 2 13, and the other end of the circulating main pipe 2 13 to be connected to the circulating branch pipe 14 through a threaded seal, the fixed connection between the circulating fan 12 and the circulating main pipe 11 and the circulating main pipe 2 13 forms a stable power transmission channel, reduces airflow resistance, ensures efficient flow of fumigation gas in the pipe, and then evenly diffuses it to the grain pile in the flat warehouse, improving the uniformity of fumigation. By setting the other end of the recovery pipe 16 to be fixed to the cylinder 17, and the bottom of the cylinder 17 to be fixed to the cone 18, the airflow rotates in the cylinder 17 and the cone 18. The air particles fall along the wall under the action of centrifugal force, realizing preliminary gas-solid separation.

[0020] like Figure 1 and Figure 2 As shown, the filtration device includes a connecting pipe 2, one end of which is sealed to the discharge pipe 19, and the other end of which is fixedly connected to a dust collection box 21. A filter plate 22 is fixedly connected to the inner wall of the dust collection box 21. The filter plate 22 has multiple through holes, and filter bags 23 are installed in the through holes. The top of the dust collection box 21 is connected to a sealing pipe 24 by a thread. During operation, the discharge pipe 19 is sealed to the dust collection box 21 through the connecting pipe 2. The filter plate 22 is fixedly connected to the inner wall of the dust collection box 21. The filter plate 22 has through holes and filter bags 23 are installed inside. The fixed connection between the filter plate 22 and the dust collection box 21 provides stable support for the filter bags 23. The filter bags 23 can accurately intercept residual small impurities in the gas, solving the problem of condenser blockage caused by incomplete filtration in traditional filter boxes and improving subsequent recovery efficiency.

[0021] like Figure 1As shown, a flange 3 is fixedly connected to the bottom of the cone 18. The bottom of the flange 3 is connected to the dust outlet pipe 31 by bolt sealing. The bottom of the dust outlet pipe 31 is connected to the dust collection box 32 by thread sealing. During operation, by setting the bottom of the cone 18 to be fixedly connected to the flange 3 and the bottom of the flange 3 to be connected to the dust outlet pipe 31 by bolt sealing, it is convenient to periodically disassemble the dust collection box 32 to clean impurities, and it also prevents the backflow of separated impurities or gas leakage, thus avoiding blockage of the subsequent condenser.

[0022] like Figure 1 As shown, the top of the filter bag 23 is fitted with a retaining ring 4, and a retaining block 41 is fixedly attached to the top of the retaining ring 4. During operation, by setting the top of the filter bag 23 to be fitted with a retaining ring 4 and the retaining block 41 fixedly attached to the top of the retaining ring 4, the filter bag 23 can be quickly fixed in the through hole of the filter plate 22, and disassembly is convenient. The filter bag can be removed for cleaning or replacement simply by moving the retaining block 41.

[0023] like Figure 1 As shown, a condenser 5 and a storage tank 51 are connected sequentially to the sealing pipe 24, and one side wall of the condenser 5 and the storage tank 51 are fixed to the square compartment. During operation, by setting the condenser 5 and the storage tank 51 to be connected sequentially to the sealing pipe 24, the connection between the sealing pipe 24 and the condenser 5 and the storage tank 51 forms a closed condensation recovery channel, which avoids the direct emission of residual fumigation gas. The condenser 5 condenses and liquefies the gas and stores it in the storage tank 51, realizing resource recovery and environmentally friendly emission.

[0024] like Figure 1 As shown, an electric valve 6 is installed on the circulating main pipe 11, and an electric valve 61 is installed on the circulating main pipe 13. During operation, the electric valves 6 and 61 can precisely control the opening and closing of the circulating main pipes 11 and 13. During the fumigation stage, the airflow direction and flow rate can be adjusted to ensure uniform concentration in the chamber. During the recovery stage, the fumigation circulation channel can be cut off to prevent gas backflow and improve the targeting of the recovery.

[0025] like Figure 1 As shown, the dust collection box 32 is equipped with a drawer dust collection 7. During operation, by setting the dust collection box 32 with a drawer dust collection 7, the separated impurities can be directly taken out from the dust collection box 32 for cleaning without disassembling the entire dust collection box. This makes the operation convenient and avoids secondary pollution caused by impurities scattering during the cleaning process.

[0026] Working Principle: Although the filter box removes dust, fine grain particles, and other impurities from the recovered gas, it may not completely remove all impurities. Long-term use could lead to condenser blockage, affecting recovery efficiency and effectiveness. By connecting the other end of the circulating main pipe 11 to the circulating fan 12, and the other end of the circulating fan 12 to the circulating main pipe 2 13, with the other end of the circulating main pipe 2 13 connected to the circulating branch pipe 14 via a threaded seal, a stable power transmission channel is formed. This reduces airflow resistance, ensures efficient flow of fumigation gas within the pipes, and allows for even diffusion to the grain pile within the flat warehouse, enhancing fumigation efficiency. Uniformity is achieved by fixing the other end of the recovery pipe 16 to the cylinder 17, and fixing the bottom of the cylinder 17 to the cone 18, causing the airflow to rotate within the cylinder 17 and the cone 18. The airflow particles fall along the wall under centrifugal force, achieving initial gas-solid separation. An exhaust pipe 19 is connected to the dust collector 21 via a connecting pipe 2. A filter plate 22 is fixed to the inner wall of the dust collector 21, and the filter plate 22 has through holes with built-in filter bags 23. The connection between the filter plate 22 and the dust collector 21 provides stable support for the filter bags 23. The filter bags 23 can accurately intercept residual minute impurities in the gas, solving the problem of incomplete filtration in traditional filter boxes leading to condenser blockage and improving subsequent recovery efficiency. The cone 18... A flange 3 is fixedly connected to the bottom, and a dust outlet pipe 31 is bolted to the bottom of the flange 3. This facilitates the periodic disassembly of the dust collection box 32 for cleaning impurities and prevents backflow of separated impurities or gas leakage, thus avoiding blockage of the subsequent condenser. A retaining ring 4 is fitted over the top of the filter bag 23, and a retaining block 41 is fixed to the top of the retaining ring 4. This allows the filter bag 23 to be quickly fixed in the through hole of the filter plate 22, and disassembly is convenient; simply move the retaining block 41 to remove the filter bag for cleaning or replacement. A condenser 5 and a storage tank 51 are sequentially connected to a sealing pipe 24, forming a closed condensation recovery channel to prevent the direct emission of residual fumigation gas. 5. After the gas is condensed and liquefied, it is stored in storage tank 51 to achieve resource recycling and environmentally friendly emissions. By setting electric valve 6 on the circulating main pipe 11 and electric valve 61 on the circulating main pipe 23, the electric valves 6 and 61 can precisely control the opening and closing of the circulating main pipe 11 and the circulating main pipe 23. During the fumigation stage, the airflow direction and flow rate can be adjusted to ensure uniform concentration in the chamber. During the recovery stage, the fumigation circulation channel can be cut off to prevent gas backflow and improve the targeting of recovery. By setting a drawer dust collection 7 in the dust collection box 32, the separated impurities can be directly taken out from the dust collection box 32 for cleaning without disassembling the entire dust collection box. The operation is convenient and can avoid secondary pollution caused by impurities scattering during the cleaning process.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gas circulation device of a special-purpose circular flow fumigation system for grain storage, comprising a flat warehouse (1), characterized in that: One end of the flat warehouse (1) is connected to a circulating main pipe (11) by a plug-in seal. The other end of the circulating main pipe (11) is fixed to a circulating fan (12). The other end of the circulating fan (12) is fixed to a circulating main pipe (13). The other end of the circulating main pipe (13) is connected to a circulating branch pipe (14) by a thread seal. Both ends of the circulating branch pipe (14) are connected to a vent (15) by a plug-in seal. The bottom end of the circulating main pipe (13) is connected to a recovery pipe (16) by a welded hole. The other end of the recovery pipe (16) is fixed to a cylinder (17). The outlet of the recovery pipe (16) is close to the inner wall of one end of the cylinder (17). The bottom of the cylinder (17) is fixed to a cone (18). The middle of the inner cavity of the cylinder (17) is provided with a discharge pipe (19) that extends upward to the outside of the cylinder (17). A filter device is provided on one side of the cylinder (17).

2. The gas circulating device of the special grain depot circulating fumigation system according to claim 1, characterized in that: The filtration device includes a connecting pipe (2), one end of which is sealed to the discharge pipe (19), and the other end of which is fixed to a dust collection box (21). A filter plate (22) is fixed to the inner wall of the dust collection box (21). Multiple through holes are opened in the filter plate (22), and filter bags (23) are installed in the through holes. A sealing pipe (24) is connected to the top of the dust collection box (21) by a threaded seal.

3. The gas circulating device of the special grain depot circulating fumigation system according to claim 1, characterized in that: The bottom of the cone (18) is fixedly connected to a flange (3), and the bottom of the flange (3) is sealed with a dust outlet pipe (31) by bolts. The bottom of the dust outlet pipe (31) is sealed with a dust collection box (32) by threads.

4. The gas circulating device of the special grain depot circulating fumigation system according to claim 2, characterized in that: The top of the filter bag (23) is fitted with a retaining ring (4), and a retaining block (41) is fixedly attached to the top of the retaining ring (4).

5. The gas circulating device of a special grain depot circulating fumigation system according to claim 2, characterized in that: The sealing pipe (24) is connected in sequence to a condenser (5) and a storage tank (51), and one side wall of the condenser (5) and the storage tank (51) is fixedly connected to the square warehouse.

6. The gas circulating device of a special grain depot circulating fumigation system according to claim 1, characterized in that: The first circulating main pipe (11) is equipped with an electric valve (6), and the second circulating main pipe (13) is equipped with an electric valve (61).

7. The gas circulating device of a special grain depot circulating fumigation system according to claim 3, characterized in that: The dust collection box (32) is equipped with a drawer dust collection (7).

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