Overall cooling system special for granary

Abstract

The utility model belongs to the technical field of granaries, and relates to an integral cooling system special for a granary, which comprises a temperature control unit arranged on the outer side of the granary, and an air outlet of the temperature control unit is in sealing connection with a combined air supply cover arranged on the inner side of the granary. The inner side wall of the combined air supply cover is provided with a first air supply outlet located above a grain surface, the bottom of the combined air supply cover is provided with a second air supply outlet connected with an air supply pipeline, the air supply pipeline is communicated with the ground cage air ducts, and the ground cage air ducts comprise a plurality of horizontal ground cage air ducts and vertical ground cage air ducts which are communicated with one another. The horizontal ground cage air duct is buried in the grain core, the bottom of the vertical ground cage air duct is connected with the end of the horizontal ground cage air duct, and the top of the vertical ground cage air duct extends out of the grain surface and is provided with an opening. According to the special integral cooling system for the granary, the air circulation process is improved, and the better temperature control effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of grain bins and relates to an integral cooling system special for grain bins. Background Art

[0002] In order to ensure the storage quality, the temperature of stored grain in a grain bin needs to be controlled to maintain quality. Generally, a special air conditioner for grain bins is used to cool the grain storage room, so as to ensure that the grain depot has a constant temperature and meet the temperature requirements of the grain.

[0003] The existing special air conditioner for grain bins sends cold air from the air outlet to the grain bin through a blower, and the hot air in the grain bin flows back to the air conditioner through the air return port for heat exchange and cooling. This air circulation process can only control the temperature of the grain surface and cannot control the temperature of the grain core. In order to control the temperature of the grain core, some grain bins also send cold air to the grain core through an arched air duct, but this device is difficult to form an effective air circulation process and the temperature control effect is average. In view of this, it is very necessary to develop a system that can not only control the temperature of the grain surface but also control the temperature of the grain core, so as to achieve the integral cooling of the whole bin. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an integral cooling system special for grain bins, which improves the air circulation process and has a better temperature control effect.

[0005] To solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0006] An integral cooling system special for grain bins includes a temperature control unit arranged on the outer side of the grain bin. The air outlet of the temperature control unit is hermetically connected to a combined air supply hood arranged on the inner side of the grain bin. The inner side wall of the combined air supply hood is provided with a first air supply port above the grain surface, and the bottom is provided with a second air supply port connected to an air supply duct. The air supply duct is communicated with a floor air duct. The floor air duct includes a plurality of horizontally connected floor air ducts and vertically connected floor air ducts. The horizontally connected floor air ducts are buried in the grain core. The bottom of the vertically connected floor air duct is connected to the end of the horizontally connected floor air duct, and the top extends outside the grain surface and is provided with an opening.

[0007] In the above integral cooling system special for grain bins, a first electric butterfly valve for controlling the first air supply port is arranged in the combined air supply hood, and a second electric butterfly valve for controlling the second air supply port is arranged at the bottom of the combined air supply hood or the top of the air supply duct. Through the first electric butterfly valve and the second electric butterfly valve, the connection states of the first air supply port and the second air supply port can be respectively controlled. Further, a plurality of temperature sensors are arranged above the grain surface and in the grain core. The temperature sensors are connected to a controller, and the start and stop of the first electric butterfly valve and the second electric butterfly valve are controlled according to the detected temperature.

[0008] In the above-mentioned overall cooling system dedicated to grain silos, an air return and airtight box located above the grain surface is provided on one side of the combined air supply hood, and the air return and airtight box is hermetically connected to the air return port of the temperature control unit; further, the air return and airtight box and the air return port, and the combined air supply hood and the air outlet can be directly connected through a rabbet structure or connected through a pipeline.

[0009] In the above-mentioned overall cooling system dedicated to grain silos, the temperature control unit is installed on the top outside the grain silo through a bracket, and air outlet installation through-holes and air return installation through-holes corresponding to the air outlet and air return ports of the temperature control unit are provided on the side wall of the grain silo.

[0010] In the above-mentioned overall cooling system dedicated to grain silos, the horizontal floor duct includes a transverse horizontal floor duct and a longitudinal horizontal floor duct, and the vertical floor duct is connected to the longitudinal horizontal floor duct. Preferably, both the transverse horizontal floor duct and the longitudinal horizontal floor duct are of tubular structures.

[0011] In the above-mentioned overall cooling system dedicated to grain silos, four groups of vertical floor ducts are provided, which are respectively located at the four corners of the grain silo.

[0012] In the above-mentioned overall cooling system dedicated to grain silos, the air supply pipeline is arranged vertically and is connected to the middle position of the horizontal floor duct.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] The present utility model provides an overall cooling system dedicated to grain silos, which is provided with a combined air supply hood. Cold air can be sent to the space of the grain silo above the grain surface through the first air supply port to control the temperature of the grain surface, and cold air can be sent to the grain core through the second air supply port, the air supply pipeline and the floor duct to control the temperature of the grain core, thereby realizing the overall cooling of the grain silo. At the same time, the floor duct of the present utility model adopts a combination of a horizontal floor duct and a vertical floor duct, which can not only form a three-dimensional air supply area, but also is conducive to forming a more complete air circulation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is Figure 1 an enlarged view of part A of

[0017] Reference Numerals: 1, grain bin; 2, temperature control unit; 3, combined air supply hood; 4, grain surface; 5, air supply duct; 6, floor duct; 7, horizontal floor duct; 8, vertical floor duct; 9, grain core; 10, first electric butterfly valve; 11, second electric butterfly valve; 12, return air sealed box; 13, bracket. Detailed Embodiment

[0018] The following further describes the present utility model with specific embodiments in conjunction with the accompanying drawings. Refer to Figure 1-2 :

[0019] An overall cooling system dedicated to a grain bin 1, comprising a temperature control unit 2 arranged outside the grain bin 1. The air outlet of the temperature control unit 2 is hermetically connected to a combined air supply hood 3 arranged inside the grain bin 1. The inner side wall of the combined air supply hood 3 is provided with a first air supply port above the grain surface 4, and the bottom is provided with a second air supply port connected to the air supply duct 5. The air supply duct 5 is communicated with the floor duct 6. The floor duct 6 comprises a plurality of interconnected horizontal floor ducts 7 and vertical floor ducts 8. The horizontal floor ducts 7 are buried in the grain core 9. The bottom of the vertical floor duct 8 is connected to the end of the horizontal floor duct 7, and the top extends outside the grain surface 4 and is provided with an opening.

[0020] The temperature control unit 2 in this embodiment adopts a special air conditioner for the grain bin 1, which includes a compressor, a condenser, an expansion valve and an evaporator. The compressor compresses the gas to form a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant is changed into a medium-temperature and high-pressure liquid refrigerant by heat dissipation through the condenser. After throttling by the expansion valve, it forms a low-temperature and low-pressure liquid refrigerant, and then absorbs heat and evaporates through the evaporator. After heat exchange, it forms a low-temperature and low-pressure gaseous refrigerant, and then circulates back to the compressor. Among them, the air outlet of the temperature control unit 2 is communicated with an air outlet cavity provided with a fan, and the air return port is communicated with a heat exchange cavity provided with an evaporator. The hot air above the grain surface 4 of the grain bin 1 enters the heat exchange cavity from the air return port, exchanges heat with the refrigerant in the evaporator to form a low-temperature gas, and then enters the combined air supply hood 3 through the air outlet cavity and the air outlet. A part of the low-temperature gas entering the combined air supply hood 3 is sent out from the first air supply port to control the temperature of the grain surface 4, and the other part is sent out from the second air supply port, enters the horizontal floor duct 7 through the air supply duct 5, and then flows to above the grain surface 4 through the vertical floor duct 8. During the process of flowing through the floor duct 6, the low-temperature gas will be sent into the grain core 9 through the air supply holes of the floor duct 6 to control the temperature of the grain core 9, and then diffuses to above the grain surface 4.

[0021] A first electric butterfly valve 10 for controlling the first air supply opening is arranged inside the above-mentioned combined air supply hood 3. A second electric butterfly valve 11 for controlling the second air supply opening is arranged at the bottom of the combined air supply hood 3 or the top of the air supply duct 5 (inside the position marked in the attached drawing). Through the first electric butterfly valve 10 and the second electric butterfly valve 11, the connection states of the first air supply opening and the second air supply opening can be controlled respectively. Further, a plurality of temperature sensors are arranged above the grain surface 4 and in the grain core 9. The temperature sensors are connected to a controller, and the start and stop of the first electric butterfly valve 10 and the second electric butterfly valve 11 are controlled by the detected temperature. For example, when the temperature of the grain surface 4 is detected to be too high, the air supply volume of the first air supply opening can be appropriately increased. When the temperature of the grain core 9 is detected to be too high, the air supply volume of the second air supply opening can be appropriately increased. Of course, one-way air supply can also be carried out through the first electric butterfly valve 10 and the second electric butterfly valve 11.

[0022] Refer to the attached Figure 2 , on one side of the above-mentioned combined air supply hood 3, an air return sealed box 12 located above the grain surface 4 is arranged. The air return sealed box 12 is hermetically connected to the air return opening of the temperature control unit 2. Further, the air return sealed box 12 and the air return opening, and the combined air supply hood 3 and the air outlet can be directly connected through a rabbet structure or connected through a pipeline.

[0023] Further, the above-mentioned temperature control unit 2 is installed on the top outside the granary 1 through a bracket 13. Air outlet installation through holes and air return installation through holes corresponding to the air outlet and air return openings of the temperature control unit 2 are arranged on the side wall of the granary 1.

[0024] Refer to the attached Figure 1 , the specific distribution of the floor duct 6 in this embodiment is that the horizontal floor duct 7 includes a transverse horizontal floor duct and a longitudinal horizontal floor duct, and the vertical floor duct 8 is connected to the longitudinal horizontal floor duct. Preferably, both the transverse horizontal floor duct and the longitudinal horizontal floor duct are of a tubular structure.

[0025] Preferably, four groups of the vertical floor ducts 8 are arranged at the four corners of the granary 1 respectively. The transverse horizontal floor duct is arranged in the middle of the granary 1, and the longitudinal horizontal floor duct is arranged at both ends of the granary 1.

[0026] Preferably, the air supply duct 5 is arranged in the vertical direction and is connected to the middle position of the horizontal floor duct 7.

[0027] The above-mentioned embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An overall temperature reduction system dedicated to a granary, comprising a temperature control unit (2) arranged outside the granary (1), characterized in that, The air outlet of the temperature control unit (2) is hermetically connected to the combined air supply hood (3) arranged inside the granary. The inner side wall of the combined air supply hood (3) is provided with a first air supply port above the grain surface (4), and the bottom is provided with a second air supply port connected to the air supply duct (5). The air supply duct (5) is communicated with the floor duct (6). The floor duct (6) includes a number of horizontally connected floor ducts (7) and vertically connected floor ducts (8). The horizontal floor ducts (7) are buried in the grain core (9), and the bottom of the vertical floor ducts (8) is connected to the end of the horizontal floor ducts (7), and the top extends outside the grain surface (4) and is provided with an opening.

2. The overall cooling system dedicated to a granary according to claim 1, wherein, A first electric butterfly valve (10) for controlling the first air supply port is arranged in the combined air supply hood (3), and a second electric butterfly valve (11) for controlling the second air supply port is arranged at the bottom of the combined air supply hood (3) or the top of the air supply duct (5).

3. The overall cooling system dedicated to a granary according to claim 1, characterized in that, A return air sealed box (12) above the grain surface (4) is arranged on one side of the combined air supply hood (3), and the return air sealed box (12) is hermetically connected to the return air port of the temperature control unit (2).

4. The overall cooling system dedicated to a granary according to claim 3, characterized in that, The temperature control unit (2) is installed on the top outside the granary (1) through a bracket (13). Air outlet installation through holes and return air installation through holes corresponding to the air outlet and return air ports of the temperature control unit (2) are arranged on the side wall of the granary (1).

5. The overall cooling system dedicated to a granary according to claim 1, characterized in that, The horizontal floor duct (7) includes a transverse horizontal floor duct and a longitudinal horizontal floor duct, and the vertical floor duct (8) is connected to the longitudinal horizontal floor duct.

6. The overall cooling system dedicated to a granary according to claim 5, characterized in that, Four groups of the vertical floor ducts (8) are provided, and are respectively located at the four corners of the granary (1).

7. The overall cooling system dedicated to a granary according to claim 5, characterized in that, The air supply duct (5) is arranged in the vertical direction and is connected to the middle position of the horizontal floor duct (7).

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