Circulation ventilation device and bungalow grain storage system

Abstract

The utility model discloses a circulation ventilation device and a bungalow grain storage system, and relates to the technical field of grain storage equipment, the circulation ventilation device comprises a ventilation assembly, a first fan assembly, a second fan assembly, a first air pipe, a second air pipe, a third air pipe, a fourth air pipe, a first valve and a second valve, the first fan assembly and the second fan assembly are arranged outside the granary, the first air pipe is communicated with the upper portion of the granary and the first fan assembly and provided with a first connector, the second air pipe is communicated with the first air pipe and the second fan assembly, and the third air pipe is communicated with the second fan assembly and the ventilation assembly and provided with a second connector. The fourth air pipe is communicated with the ventilation assembly and the first fan assembly, a first valve is arranged on the second air pipe, and a second valve is arranged on the fourth air pipe. According to the technical scheme provided by the utility model, the integration level of equipment required for realizing three functions of circulation temperature equalization, circulation fumigation and nitrogen-rich gas regulation is improved, and the structure is simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to a grain storage equipment technical field, especially relates to a circulating air device and flat warehouse grain storage system. BACKGROUND

[0002] Grain storage is an important link of grain industry, and the control of temperature, mildew, insect damage and the like of grain in flat warehouse grain storage system is extremely important, and currently commonly used means mainly includes circulating temperature equalization technology, circulating fumigation technology, nitrogen-rich air conditioning technology and the like.

[0003] The circulating temperature equalization technology carries out temperature reduction treatment to the warehouse by selecting and using different cold sources or grain coolers.The circulating fumigation technology utilizes the circulating fumigation equipment to force the circulation of fumigation gas, promotes the rapid and uniform distribution of fumigation gas in the grain pile, so as to achieve the purpose of fumigation and insect killing.The nitrogen-rich air conditioning technology utilizes nitrogen as the dominant gas in the grain storage environment, replaces oxygen in the air, so as to achieve the purpose of inhibiting the growth and reproduction of pests and microorganisms, delaying the metabolic rate of grain itself, and maintaining the quality of grain.

[0004] However, the operation equipment for realizing the circulating temperature equalization, the circulating fumigation and the nitrogen-rich air conditioning is independent of each other, the number of parts is large, and the structure is complex. CONTENT OF THE UTILITY MODEL

[0005] The main purpose of the utility model is to provide a circulating air device and flat warehouse grain storage system, which aims to improve the integration of equipment required for realizing the three functions of circulating temperature equalization, circulating fumigation and nitrogen-rich air conditioning, and simplify the structure.

[0006] In order to achieve the above-mentioned purpose, the circulating air device provided by the utility model is applied to the flat warehouse grain storage system, and the circulating air device comprises:

[0007] A ventilation assembly is used for communicating with the bottom of the grain warehouse;

[0008] A first fan assembly is arranged outside the grain warehouse;

[0009] A second fan assembly is arranged outside the grain warehouse;

[0010] A first air pipe is communicated with the first fan assembly at one end, and communicated with the upper part of the grain warehouse at the other end, and the first air pipe is provided with a first interface which can be communicated with the outside;

[0011] A second air pipe is communicated with the first air pipe and the second fan assembly, and the connection part of the second air pipe and the first air pipe is arranged on the side of the first interface which is away from the first fan assembly;

[0012] A third air duct is connected to the second air fan assembly and the ventilation assembly, and the third air duct is provided with a second interface connected to the outside;

[0013] A fourth air duct is connected to the ventilation assembly and the first air fan assembly;

[0014] A first valve is arranged in the second air duct to open or close the second air duct; and

[0015] A second valve is arranged in the fourth air duct to open or close the fourth air duct.

[0016] In an embodiment, the first valve is a manually controlled valve; and / or,

[0017] The second valve is an electromagnetically controlled valve.

[0018] In an embodiment, the ventilation assembly comprises a box arranged outside the grain storehouse and provided with a ventilation cavity, the box is further provided with a first ventilation opening connected to the ventilation cavity, a third interface connected to the third air duct, and a fourth interface connected to the fourth air duct, the first ventilation opening is used to be connected to the bottom of the grain storehouse.

[0019] In an embodiment, the box is further provided with a second ventilation opening arranged opposite to the first ventilation opening, and the ventilation assembly further comprises a door body detachably connected to the box to close or open the second ventilation opening; and / or,

[0020] The box comprises an inner box and an outer box, the inner box is provided with the ventilation cavity, the outer box is arranged outside the inner box, and a thermal insulation material is filled between the inner box and the outer box.

[0021] In an embodiment, the first air fan assembly comprises:

[0022] A first motor arranged outside the grain storehouse; and

[0023] A first volute arranged in the first motor, the first volute is provided with a first air inlet and a first air outlet, the first air inlet is connected to the first air duct, and the first air outlet is connected to the fourth air duct.

[0024] In an embodiment, the first air fan assembly further comprises a thermal insulation layer arranged on the inner side and / or the outer side of the first volute; and / or,

[0025] The first air fan assembly further comprises a rain shield fixed to the first volute and covering the first motor.

[0026] In an embodiment, the second fan assembly comprises:

[0027] a second motor arranged outside the granary; and

[0028] a second volute arranged at the second motor, the second volute being provided with a second air inlet and a second air outlet, the second air inlet being communicated with the second air pipe, and the second air outlet being communicated with the third air pipe.

[0029] In an embodiment, the circular-flow ventilation device further comprises a third fan assembly, the third fan assembly being detachably connected with the second interface; or,

[0030] The circular-flow ventilation device further comprises a drug delivery assembly, the drug delivery assembly being detachably connected with the second interface.

[0031] In an embodiment, the circular-flow ventilation device further comprises a nitrogen production assembly, the nitrogen production assembly being detachably connected with the first interface, and being used for producing nitrogen; and / or,

[0032] At least one of the first air pipe, the second air pipe, the third air pipe and the fourth air pipe is a double-layer heat-insulating pipe.

[0033] The utility model further provides a flat warehouse grain storage system, include:

[0034] a granary provided with a grain storage space; and

[0035] The circular-flow ventilation device, the ventilation assembly is communicated with the bottom of the grain storage space, and one end of the first air pipe away from the first fan assembly is communicated with the upper part of the grain storage space.

[0036] The technical scheme of the utility model discloses a circulation ventilation device including ventilation subassembly, first fan subassembly, second fan subassembly, first air pipe, second air pipe, third air pipe, fourth air pipe, first valve and second valve.In summer, the temperature of the center of the grain in the granary is lower, and the temperature of the top layer of grain is higher, and the grain in the higher temperature area is easy to be damaged, and the circulation ventilation device can realize the function of uniform temperature, specifically, the first interface, the second interface and the first valve are closed, the second valve is opened, and the first fan subassembly is started, under the action of the first fan subassembly, the air flow passes through ventilation subassembly, fourth air pipe, first fan subassembly, first air pipe in order from the bottom of the granary and returns to the upper part of the granary, so that the low-temperature air in the center of the grain flows to the upper part of the grain and circulates continuously, realizing the function of circulation uniform temperature, reducing the possibility of grain deterioration and prolonging the storage period of the grain.In order to reduce pests and microorganisms in the grain pile, the circulation ventilation device can also realize the fumigation function, specifically, the first interface and the second valve are closed, the second interface and the first valve are opened, and the second fan subassembly is started, under the action of the second fan subassembly, the air flow passes through first air pipe, second air pipe, second fan subassembly, third air pipe, ventilation subassembly in order from the upper part of the granary and returns to the bottom of the granary, wherein the fumigation gas for killing pests is injected into the third air pipe from the second interface and enters the grain pile together with the air flow from the ventilation subassembly, realizing the function of circulation fumigation, reducing the number of pests and microorganisms in the grain, and prolonging the storage period of the grain.The circulation ventilation device can also realize the function of nitrogen enrichment, that is, nitrogen is filled into the granary to prevent and control pests and mildew, specifically, when nitrogen is filled into the granary, the first valve, the second valve and the second interface are closed, the first interface is opened, nitrogen is filled through the first interface, nitrogen enters the upper part of the granary through the first interface and the first air pipe in order, so as to change the gas composition in the granary, reduce the possibility of pests and mildew, and prolong the storage period of the grain;when nitrogen is discharged, the first valve and the second valve are closed, the first interface and the second interface are opened, and the nitrogen in the granary passes through ventilation subassembly, third air pipe and second interface in order and is discharged, and the air in the external environment enters the inside of the granary through the first air pipe from the first interface under the action of the pressure difference, so that the air in the granary returns to normal composition.The circulation ventilation device realizes the functions of circulation uniform temperature, circulation fumigation and nitrogen enrichment, can switch different functions according to actual needs, reduces the possibility of local heating, mildew, pest damage and other problems in the granary, has high integration, reduces the number of parts required to realize the three functions, simplifies the overall structure, is easy to arrange, and reduces the overall equipment cost. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0038] Figure 1 Structure diagram of the circulation temperature equalization of the embodiment of the circulation ventilation device provided by the present application Figure 1

[0039] Figure 2 Structure diagram of the circulation temperature equalization of the embodiment of the circulation ventilation device provided by the present application Figure 2

[0040] Figure 3 Structure diagram of the circulation fumigation of the embodiment of the circulation ventilation device provided by the present application Figure 1

[0041] Figure 4 Structure diagram of the circulation fumigation of the embodiment of the circulation ventilation device provided by the present application Figure 2

[0042] Figure 5 Structure diagram of the nitrogen-rich air adjustment and charging of the embodiment of the circulation ventilation device provided by the present application Figure 1

[0043] Figure 6 Structure diagram of the nitrogen-rich air adjustment and charging of the embodiment of the circulation ventilation device provided by the present application Figure 2

[0044] Figure 7 Structure diagram of the nitrogen-rich air adjustment and exhaust of the embodiment of the circulation ventilation device provided by the present application Figure 1

[0045] Figure 8 Structure diagram of the nitrogen-rich air adjustment and exhaust of the embodiment of the circulation ventilation device provided by the present application Figure 2

[0046] Figure 9 Structure diagram of the ventilation assembly of the circulation ventilation device provided by the present application

[0047] Figure 10 Structure diagram of the first fan assembly of the circulation ventilation device provided by the present application

[0048] Figure 11 Structure diagram of the second fan assembly of the circulation ventilation device provided by the present application​​​​​​​​

[0049] BRIEF DESCRIPTION OF DRAWINGS

[0050] 110, ventilation assembly; 111, cabinet; 1111, third interface; 1112, fourth interface; 112, door body; 120, first fan assembly; 121, first motor; 122, first volute; 123, rain shield; 130, second fan assembly; 131, second motor; 132, second volute; 141, first air pipe; 1411, first interface; 142, second air pipe; 143, third air pipe; 1431, second interface; 144, fourth air pipe; 151, first valve; 152, second valve; 160, third fan assembly; 170, nitrogen making assembly;

[0051] 200, granary.

[0052] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0054] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0055] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixing", etc. should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; "connection" can be mechanical connection, or electrical connection, can be direct connection, or indirect connection through intermediate medium, can be internal connection of two elements or interaction relationship between two elements. Unless otherwise explicitly limited, the above terms in the present application can be understood according to the specific meaning in the specific situation by those skilled in the art.

[0056] In addition, if the embodiment of the utility model has the description of "first", "second" and the like, the "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0057] The utility model provides a kind of circulation ventilation device.

[0058] Please refer to Figures 1 to 8 , Figure 1 The structure diagram of circulation temperature equalization of an embodiment of the circulation ventilation device provided by the utility model Figure 1 , Figure 2 The structure diagram of circulation temperature equalization of an embodiment of the circulation ventilation device provided by the utility model Figure 2 , Figure 3 The structure diagram of circulation fumigation of an embodiment of the circulation ventilation device provided by the utility model Figure 1 , Figure 4 The structure diagram of circulation fumigation of an embodiment of the circulation ventilation device provided by the utility model Figure 2 , Figure 5 The structure diagram of nitrogen-rich gas adjustment aeration of an embodiment of the circulation ventilation device provided by the utility model Figure 1 , Figure 6 The structure diagram of nitrogen-rich gas adjustment aeration of an embodiment of the circulation ventilation device provided by the utility model Figure 2 , Figure 7 The structure diagram of nitrogen-rich gas adjustment exhaust of an embodiment of the circulation ventilation device provided by the utility model Figure 1 , Figure 8 The structure diagram of nitrogen-rich gas adjustment exhaust of an embodiment of the circulation ventilation device provided by the utility model Figure 2 .

[0059] In an embodiment of the utility model, the circulation ventilation device is applied to flat warehouse grain system, and the circulation ventilation device comprises:

[0060] Ventilation assembly 110 is used for communicating with the bottom of granary 200;

[0061] First fan assembly 120 is arranged outside granary 200;

[0062] The second fan assembly 130 is arranged outside the grain bin 200.

[0063] The first air pipe 141 is arranged in communication with the first fan assembly 120 at one end and with the upper part of the grain bin 200 at the other end, and is provided with a first interface 1411 in communication with the outside.

[0064] The second air pipe 142 is arranged in communication with the first air pipe 141 and the second fan assembly 130, and is arranged at the side of the first interface 1411 away from the first fan assembly 120.

[0065] The third air pipe 143 is arranged in communication with the second fan assembly 130 and the ventilation assembly 110, and is provided with a second interface 1431 in communication with the outside.

[0066] The fourth air pipe 144 is arranged in communication with the ventilation assembly 110 and the first fan assembly 120.

[0067] The first valve 151 is arranged in the second air pipe 142 to open and close the second air pipe 142.

[0068] The second valve 152 is arranged in the fourth air pipe 144 to open and close the fourth air pipe 144.

[0069] The utility model discloses a technical scheme's circulation ventilation device includes ventilation subassembly 110, first fan subassembly 120, second fan subassembly 130, first air pipe 141, second air pipe 142, third air pipe 143, fourth air pipe 144, first valve 151 and second valve 152. In summer, the temperature of the center of the grain in the granary 200 is lower, and the temperature of the top layer grain is higher, and the grain in the higher temperature area is easy to be damaged, and the circulation ventilation device can realize the function of uniform temperature, specifically, the first interface 1411, the second interface 1431 and the first valve 151 are closed, the second valve 152 is opened, and the first fan subassembly 120 is started, under the action of the first fan subassembly 120, the air flow is from the bottom of the granary 200 in turn through ventilation subassembly 110, fourth air pipe 144, first fan subassembly 120, first air pipe 141 and returns to the upper portion of the granary 200, so that the low-temperature air in the center of the grain flows to the upper portion of the grain and circulates continuously, realizes the function of circulation uniform temperature, reduces the possibility of grain deterioration, and prolongs the storage period of the grain. In order to reduce the pests and microorganisms in the grain pile, the circulation ventilation device can also realize the fumigation function, specifically, the first interface 1411 and the second valve 152 are closed, the second interface 1431 and the first valve 151 are opened, and the second fan subassembly 130 is started, under the action of the second fan subassembly 130, the air flow is from the upper portion of the granary 200 in turn through first air pipe 141, second air pipe 142, second fan subassembly 130, third air pipe 143, ventilation subassembly 110 and returns to the bottom of the granary 200, wherein the fumigation gas for killing pests is injected into the third air pipe 143 from the second interface 1431, and enters the grain pile along with the air flow from the ventilation subassembly 110, realizes the function of circulation fumigation, reduces the number of pests and microorganisms in the grain, thereby prolonging the storage period of the grain. The circulation ventilation device can also realize the function of nitrogen-rich air conditioning, that is, nitrogen is filled into the granary 200 to prevent and treat insects and mildew, specifically, when nitrogen is filled into the granary 200, the first valve 151, the second valve 152 and the second interface 1431 are closed, the first interface 1411 is opened, and nitrogen is filled through the first interface 1411, and the nitrogen enters the upper portion of the granary 200 in turn through the first interface 1411 and the first air pipe 141, so as to change the gas composition in the granary 200, reduce the possibility of insect and mildew occurrence, and prolong the storage period of the grain.The circulation ventilation device realizes three functions of circulation temperature equalization, circulation fumigation and nitrogen-rich air regulation, can switch different functions according to actual needs, reduces the possibility of local heating, mold, insect damage and other problems in the grain warehouse 200, has high integration, reduces the number of parts required to realize the three functions, simplifies the overall structure, is easy to arrange, and reduces the overall equipment cost.

[0070] In an embodiment, the first valve 151 is a manually controlled valve; and / or,

[0071] The second valve 152 is an electromagnetic control valve.

[0072] In the embodiment of the utility model, only the first valve 151 needs to be opened when realizing the circulation fumigation function, since the circulation fumigation function is used less frequently, the first valve 151 has a low switching frequency, and the use of the manually controlled valve for the first valve 151 is conducive to reducing the equipment cost and has less impact on the workload of the user.

[0073] In the embodiment of the utility model, the circulation temperature equalization function needs to be used frequently in summer to ensure the uniformity of the grain temperature, which makes the switching frequency of the second valve 152 high, and the use of the electromagnetic control valve for the second valve 152 is conducive to reducing the operation of the user and improving the use convenience of the circulation ventilation device.

[0074] In an embodiment, the ventilation assembly 110 includes a box body 111, the box body 111 is arranged outside the grain warehouse 200 and is provided with a ventilation cavity, the box body 111 is further provided with a first ventilation opening, a third interface 1111 and a fourth interface 1112, the first ventilation opening is used to communicate with the bottom of the grain warehouse 200, the third interface 1111 communicates with the third air pipe 143, and the fourth interface 1112 communicates with the fourth air pipe 144.

[0075] In the embodiment of the utility model, the ventilation assembly 110 includes the box body 111, the box body 111 is arranged outside the grain warehouse 200 and is easy to maintain, the ventilation cavity of the box body 111 communicates with the bottom of the grain warehouse 200 through the first ventilation opening, communicates with the third air pipe 143 through the third interface 1111, and communicates with the fourth air pipe 144 through the fourth interface 1112, so that the structure is simple and easy to realize.

[0076] In an embodiment, the box body 111 is further provided with a second ventilation opening, the second ventilation opening is arranged opposite to the first ventilation opening, the ventilation assembly 110 further includes a door body 112, the door body 112 is detachably connected with the box body 111 to close or open the second ventilation opening; and / or,

[0077] The box body 111 includes an inner box body and an outer box body, the inner box body is provided with the ventilation cavity, the outer box body is sleeved outside the inner box body, and the inner box body and the outer box body are filled with thermal insulation materials.

[0078] Combine Figure 1 and Figure 9 In an embodiment of the present invention, housing 111 further includes a second vent opposite the first vent, and a door 112 is provided at the second vent. Door 112 can open and close the second vent. Door 112 closes the second vent when performing the three functions of circulating temperature equalization, circulating fumigation, and nitrogen-enriched gas conditioning. When door 112 opens the second vent, the interior of granary 200 is directly connected to the external environment through the first and second vents, increasing heat exchange between the grain and the external environment and improving grain temperature uniformity. Grain sampling within granary 200 can also be performed through ventilation assembly 110.

[0079] In an embodiment of the present invention, the box body 111 of the ventilation component 110 includes an inner box body (not shown in the figure) and an inner box body (not shown in the figure), and the outer box body is sleeved on the outside of the inner box body to form a double-layer structure, and the space between the inner box body and the outer box body is filled with thermal insulation materials, such as polyurethane foam, polystyrene foam, etc., which improves the thermal insulation performance of the ventilation component 110 and reduces the heat exchange between the airflow and the external environment when passing through the ventilation component 110, thereby improving the circulation temperature equalization effect.

[0080] In one embodiment, the first fan assembly 120 includes:

[0081] The first motor 121 is provided outside the granary 200; and

[0082] The first volute 122 is provided on the first motor 121 . The first volute 122 is provided with a first air inlet and a first air outlet. The first air inlet is connected to the first air duct 141 , and the first air outlet is connected to the fourth air duct 144 .

[0083] Reference Figure 10 In an embodiment of the present invention, the first fan assembly 120 includes a first bracket, a first motor 121, a first impeller (not shown in the figure), and a first volute 122. The first bracket fixes the first motor 121 to the outside of the grain silo 200, reducing the possibility of the first fan assembly 120 falling off. The first impeller is arranged in the first volute 122. The first motor 121 drives the first impeller to rotate, thereby driving the airflow to move. Driven by the first motor 121, the airflow enters the first volute 122 from the first air duct 141 through the first air inlet, and then enters the fourth air duct 144 through the first air outlet. The first volute 122 can guide and accelerate the airflow, thereby improving ventilation efficiency. Since the first motor 121 is located outside the grain silo 200, the potential damage to the first motor 121 caused by dust and humidity in the grain storage environment is reduced. In addition, the external first motor 121 is more convenient for daily inspection and maintenance. Specifically, the first motor 121 adopts a dust-proof and explosion-proof motor.

[0084] In an embodiment, the first fan assembly 120 further comprises a thermal insulation layer arranged on the inner side and / or the outer side of the first volute 122; and / or,

[0085] The first fan assembly 120 further comprises a rain shield 123 fixed to the first volute 122 and covering the first motor 121.

[0086] In the embodiment of the utility model, the thermal insulation layer (not shown in the figure) is arranged on the first volute 122, the thermal insulation layer can be arranged on the inner side of the first volute 122, and can also be arranged on the outer shell of the first volute 122, the thermal insulation layer can be made of polyurethane foam, polystyrene foam and other thermal insulation materials, the thermal insulation performance of the first volute 122 is improved, the heat exchange between the airflow passing through the first fan assembly 120 and the external environment is reduced, and therefore the circulating temperature equalization effect is improved; on the other hand, the thermal insulation layer can also play a thermal insulation role on the first fan assembly 120 itself, the appearance of condensate water is reduced, and the service life of the first fan assembly 120 is prolonged.

[0087] Referring to Figure 10 In the embodiment of the utility model, the rain shield 123 is further arranged on the first volute 122, the rain shield 123 is arranged above the first motor 121, rain and snow are prevented from falling on the first motor 121, and the service life of the first motor 121 is prolonged.

[0088] In an embodiment, the second fan assembly 130 comprises:

[0089] The second motor 131 is arranged outside the granary 200; and

[0090] The second volute 132 is arranged on the second motor 131, the second volute 132 is provided with a second air inlet and a second air outlet, the second air inlet is communicated with the second air pipe 142, and the second air outlet is communicated with the third air pipe 143.

[0091] Referring to Figure 11In the embodiment of the utility model, second fan assembly 130 includes second support, second motor 131, second impeller (not shown in the drawing) and second volute 132, second support fixes second motor 131 at the outside of granary 200, reduces the possibility of second fan assembly 130 falling off, second impeller is located in second volute 132, second motor 131 drives second impeller rotation and drives air current movement, under the drive of second motor 131, air current passes through second air inlet into second volute 132 from second air pipe 142, enters third air pipe 143 again through second air outlet, second volute 132 can guide and accelerate air current, improves ventilation efficiency. Since second motor 131 is located at the outside of granary 200, therefore reduces the potential damage of dust and humidity in grain storage environment to second motor 131, and external second motor 131 is more convenient for daily inspection and maintenance, specifically, second motor 131 adopts dustproof explosion-proof motor. In the embodiment, rain baffle 123 is also arranged on second volute 132, rain baffle 123 covers the upper side of second motor 131, avoids rain and snow from falling on second motor 131, prolongs the service life of second motor 131.

[0092] In an embodiment, the air circulation ventilation device further comprises a third fan assembly 160, and the third fan assembly 160 is detachably connected with the second interface 1431.

[0093] The air circulation ventilation device further comprises a drug delivery assembly, and the drug delivery assembly is detachably connected with the second interface 1431.

[0094] Referring to Figure 7 In the embodiment of the utility model, when discharging nitrogen through the second interface 1431, the second interface 1431 is detachably connected with the third fan assembly 160, and the third fan assembly 160 sucks gas through the second interface 1431, thereby improving the efficiency of nitrogen discharge and facilitating the rapid recovery of the air in the granary 200 to normal composition.

[0095] In the embodiment of the utility model, when discharging nitrogen through the second interface 1431, the second interface 1431 is detachably connected with the third fan assembly 160, and the third fan assembly 160 sucks gas through the second interface 1431, thereby improving the efficiency of nitrogen discharge and facilitating the rapid recovery of the air in the granary 200 to normal composition.

[0096] In an embodiment, the air circulation ventilation device further comprises a nitrogen generation assembly 170, and the nitrogen generation assembly 170 is detachably connected with the first interface 1411 and used for generating nitrogen; and / or,

[0097] At least one of the first air duct 141 , the second air duct 142 , the third air duct 143 and the fourth air duct 144 is a double-layer insulation pipe.

[0098] Reference Figure 5 In an embodiment of the present invention, the circulating ventilation device further includes a nitrogen production component 170, which is detachably connected to the first interface 1411. The nitrogen produced by the nitrogen production component 170 is directly introduced into the first air duct 141 through the first interface 1411, thereby shortening the nitrogen delivery and transfer process, reducing nitrogen loss and reducing costs.

[0099] In an embodiment of the present utility model, at least one of the first air duct 141, the second air duct 142, the third air duct 143 and the fourth air duct 144 adopts a double-layer insulation pipe, and the double-layer insulation pipe includes an inner pipe and an outer pipe, and insulation materials such as polyurethane foam, polystyrene foam, etc. are filled between the inner pipe and the outer pipe, which improves the insulation performance of the pipeline, reduces the heat exchange between the airflow and the external environment when passing through the pipeline, and thus improves the circulation temperature equalization effect.

[0100] The utility model also provides a bungalow grain storage system, comprising:

[0101] Granary 200, having a grain storage space; and

[0102] In the above-mentioned circulating ventilation device, the ventilation component 110 is connected to the bottom of the grain storage space, and the end of the first air duct 141 away from the first fan component 120 is connected to the upper part of the grain storage space.

[0103] The specific structure of the circulating ventilation device refers to the above-mentioned embodiments. Since the bungalow grain storage system adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0104] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A circulating ventilation device, applied to a bungalow grain storage system, characterized in that: The circulating ventilation device comprises: a ventilation assembly for communicating with the bottom of the granary; a first fan assembly, disposed outside the granary; a second fan assembly, disposed outside the granary; a first air duct, one end of which is connected to the first fan assembly, the other end of which is connected to the upper portion of the granary, and the first air duct is provided with a first interface that can be connected to the outside world; a second air duct, connecting the first air duct and the second fan assembly, wherein the connection between the second air duct and the first air duct is located on a side of the first interface away from the first fan assembly; a third air duct, communicating with the second fan assembly and the ventilation assembly, and the third air duct is provided with a second interface communicable with the outside world; a fourth air duct, connecting the ventilation assembly and the first fan assembly; A first valve is provided on the second air duct, and is used to open and close the second air duct; and The second valve is provided on the fourth air duct and is used for opening and closing the fourth air duct.

2. The circulating ventilation device according to claim 1, characterized in that: The first valve is a manual control valve; and / or, The second valve is a solenoid control valve.

3. The circulating ventilation device according to claim 1, characterized in that: The ventilation assembly includes a box body, which is arranged outside the granary and is provided with a ventilation cavity. The box body is also provided with a first ventilation port, a third interface and a fourth interface connected to the ventilation cavity. The first ventilation port is used to connect with the bottom of the granary, the third interface is connected to the third air duct, and the fourth interface is connected to the fourth air duct.

4. The circulating ventilation device according to claim 3, characterized in that: The box body is further provided with a second vent, which is arranged opposite to the first vent. The ventilation assembly further comprises a door, which is detachably connected to the box body to close or open the second vent; and / or, The box body includes an inner box body and an outer box body, the inner box body is provided with the ventilation cavity, the outer box body is sleeved on the outside of the inner box body, and the space between the inner box body and the outer box body is filled with heat insulation material.

5. The circulating ventilation device according to claim 1, characterized in that: The first fan assembly comprises: a first motor, disposed outside the granary; and The first volute is provided on the first motor. The first volute is provided with a first air inlet and a first air outlet. The first air inlet is connected to the first air duct, and the first air outlet is connected to the fourth air duct.

6. The circulating ventilation device according to claim 5, characterized in that: The first fan assembly further includes a thermal insulation layer, the thermal insulation layer being provided on the inner side and / or the outer side of the first volute; and / or, The first fan assembly further includes a rain shield, which is fixed to the first volute and covers the first motor.

7. The circulating ventilation device according to claim 1, characterized in that: The second fan assembly includes: a second motor, disposed outside the granary; and The second volute is provided on the second motor. The second volute is provided with a second air inlet and a second air outlet. The second air inlet is connected to the second air duct, and the second air outlet is connected to the third air duct.

8. The circulating ventilation device according to claim 1, characterized in that: The circulating ventilation device further includes a third fan assembly, and the third fan assembly is detachably connected to the second interface; or, The circulating ventilation device further includes a medication administration component, which is detachably connected to the second interface.

9. The circulating ventilation device according to claim 1, characterized in that: The circulating ventilation device further includes a nitrogen production component, which is detachably connected to the first interface and is used to produce nitrogen; and / or, At least one of the first air duct, the second air duct, the third air duct and the fourth air duct is a double-layer insulation pipe.

10. A bungalow grain storage system, characterized in that: include: granary, with space for grain storage; as well as The circulating ventilation device according to any one of claims 1 to 9, wherein the ventilation assembly is connected to the bottom of the grain storage space, and the end of the first air duct away from the first fan assembly is connected to the upper part of the grain storage space.

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