Livestock and poultry house heat recovery type three-stage environment control system

Abstract

The utility model discloses a livestock and poultry house heat recovery type three-stage environment control system which comprises a livestock and poultry house, the bottom of the livestock and poultry house is a ground, ventilation channels are symmetrically arranged in the ground, air outlets communicated with the interior of the livestock and poultry house are formed in the tops of the ventilation channels at equal intervals, air inlet pipes are fixedly arranged at one ends of the ventilation channels, and air outlet pipes are fixedly arranged at the other ends of the ventilation channels. A second fan is fixedly arranged at one end of each air inlet pipe; heat exchange pipes covering the outer side of the air inlet pipe are fixedly arranged on the outer side of the livestock and poultry house, waste discharge pipes are fixedly arranged on one sides of the heat exchange pipes, branch pipes are fixedly arranged on the tops of the heat exchange pipes, and the branch pipes are connected with the top of the livestock and poultry house through exhaust assemblies. By means of the structure, large air volume, small air volume and hot air supply are achieved, the three ventilation modes can better cope with different seasonal climates of the outside, and full adaptation of livestock and poultry in the house is facilitated; in winter, waste heat in the house is used for preheating fresh air, animal stress is avoided, meanwhile, energy consumption can be reduced, and energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] This utility model relates to the field of livestock and poultry breeding technology, and in particular to a three-stage environmental control system for heat recovery in livestock and poultry houses. Background Technology

[0002] With global population growth and rising demand for meat, the scale of livestock and poultry farming continues to expand. Livestock and poultry farming is a core component of agricultural production, encompassing the large-scale raising of animals such as pigs, chickens, cattle, and sheep.

[0003] During the rearing process, it is necessary to control the temperature inside the shed. Existing ventilation methods are mostly two-stage ventilation, consisting of "horizontal ventilation + vertical ventilation." In cold seasons, this not only wastes the heat energy contained in the exhaust gas but may also cause cold stress in livestock and poultry due to excessively low fresh air temperatures. Therefore, this utility model provides a three-stage environmental control system for livestock and poultry sheds based on heat recovery to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to provide a three-stage environmental control system for heat recovery in livestock and poultry houses. By realizing three ventilation modes—large air volume, small air volume, and hot air supply—it can better cope with different seasonal climates and facilitate the full adaptation of livestock and poultry in the house. In winter, the waste heat in the house can be used for preheating of fresh air, which can reduce energy consumption and achieve energy conservation and emission reduction while avoiding animal stress.

[0005] To achieve the above objectives, a three-stage environmental control system for heat recovery in livestock and poultry houses is provided, including a livestock and poultry house. The bottom of the livestock and poultry house is the ground. Ventilation channels are symmetrically arranged inside the ground. Air outlets communicating with the interior of the livestock and poultry house are opened at equal intervals at the top of the ventilation channels. An air inlet pipe is fixedly installed at one end of each ventilation channel, and a second fan is fixedly installed at one end of each air inlet pipe.

[0006] The outside of the livestock and poultry house is fixedly provided with a heat exchange pipe covering the outside of the air inlet pipe. A waste discharge pipe is fixedly provided on one side of each heat exchange pipe. A branch pipe is fixedly provided at the top of each heat exchange pipe. The branch pipe is connected to the top of the livestock and poultry house through an exhaust assembly.

[0007] According to the three-stage environmental control system for heat recovery in livestock and poultry houses, one end of the livestock and poultry house is equipped with water curtains and air guide windows arranged vertically, and the other end of the livestock and poultry house is equipped with multiple first fans.

[0008] According to the three-stage environmental control system for heat recovery in livestock and poultry houses, the exhaust assembly includes an exhaust fan fixed to the top of the livestock and poultry house and an air supply pipe fixed to the top of the exhaust fan, and the branch pipes are all connected to the air supply pipe.

[0009] According to the three-stage environmental control system for heat recovery in livestock and poultry houses, an air outlet pipe is fixedly installed at the top of each air outlet, and the top of the air outlet pipe extends to above the ground.

[0010] According to the three-stage environmental control system for heat recovery in livestock and poultry houses, the air inlet pipe is made of a high thermal conductivity material, and the outer surface of the air inlet pipe is provided with a corrugated groove.

[0011] According to the three-stage environmental control system for heat recovery in livestock and poultry houses, the first fan, the exhaust fan, and the second fan are all rare earth permanent magnet fans.

[0012] According to the three-stage environmental control system for heat recovery in livestock and poultry houses, the top of the water curtain and the air guide window are both equipped with flaps that are hinged to the livestock and poultry house.

[0013] According to the three-stage environmental control system for heat recovery in livestock and poultry houses, the outer surfaces of the gas supply pipes and branch pipes are covered with heat-insulating cotton.

[0014] This utility model has the following beneficial effects:

[0015] 1. Compared with existing technologies, by realizing large air volume, small air volume and hot air supply, the three ventilation methods can better cope with and solve the different seasonal climates of the outside world, which is conducive to the full adaptation of livestock and poultry in the house; and in winter, the waste heat in the house can be used for fresh air preheating, which can reduce energy consumption while avoiding animal stress, and achieve energy conservation and emission reduction. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a first-view structural diagram of a three-stage environmental control system for heat recovery in livestock and poultry houses according to the present invention.

[0018] Figure 2 This is a second-view structural diagram of a three-stage environmental control system for heat recovery in livestock and poultry houses according to the present invention.

[0019] Figure 3 This is a schematic cross-sectional view of the heat exchanger tube structure of a three-stage environmental control system for heat recovery in livestock and poultry houses according to this utility model.

[0020] Figure 4 This is a schematic cross-sectional view of the livestock and poultry house and the ground of a three-stage environmental control system for heat recovery in livestock and poultry houses according to the present invention.

[0021] Figure 5 This is a schematic diagram of the heat exchange tube and air inlet pipe structure of a three-stage environmental control system for heat recovery in livestock and poultry houses according to this utility model.

[0022] Legend:

[0023] 1. Livestock and poultry shed; 2. Water curtain; 3. Air guide window; 4. Flip-up panel; 5. Ground; 6. Ventilation duct; 7. Air outlet pipe; 8. Heat exchange pipe; 9. Waste discharge pipe; 10. First fan; 11. Exhaust fan; 12. Gas transmission pipe; 13. Branch pipe; 14. Second fan; 15. Air inlet pipe; 16. Corrugated trough. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-5 This utility model discloses a three-stage environmental control system for heat recovery in livestock and poultry houses, comprising a livestock and poultry house 1, with a ground surface 5 at its bottom. Symmetrical ventilation channels 6 are arranged inside the ground surface 5. Air outlets communicating with the interior of the livestock and poultry house 1 are equidistantly spaced at the top of the ventilation channels 6. Air outlet pipes 7 are fixed to the top of each air outlet, extending above the ground surface 5. An air inlet pipe 15 is fixed to one end of each ventilation channel 6, and a second fan 14 is fixed to one end of each air inlet pipe 15. The livestock and poultry house 1 is located on its outer side. A heat exchange pipe 8 is fixedly installed on the outside of the air inlet pipe 15. A waste discharge pipe 9 is fixedly installed on one side of the heat exchange pipe 8. A branch pipe 13 is fixedly installed on the top of the heat exchange pipe 8. The branch pipe 13 is connected to the top of the livestock and poultry house 1 through an exhaust assembly. The exhaust assembly includes an exhaust fan 11 fixedly installed on the top of the livestock and poultry house 1 and an air supply pipe 12 fixedly installed on the top of the exhaust fan 11. The branch pipe 13 is connected to the air supply pipe 12. The outer surfaces of the air supply pipe 12 and the branch pipe 13 are covered with heat insulation cotton to reduce heat loss.

[0026] In winter, the second fan 14 starts, and cold air from outside enters the ventilation duct 6 through the air inlet duct 15. The heat exchange pipe 8 outside the air inlet duct 15 absorbs the residual heat discharged from the shed through the exhaust pipe 9. After being preheated, the cold air is sent into the shed through the air outlet duct 7 to maintain a stable temperature inside the shed. The air outlet duct 7 on the ground 5 forms a vertical laminar flow, which helps to avoid dead air zones and uses the residual heat of the exhaust to preheat the air entering the shed. The suitable temperature can avoid stress to the animals and also helps to reduce the power consumption of the heating equipment, making it highly practical.

[0027] One end of the livestock and poultry house 1 is equipped with a water curtain 2 and a wind guide window 3 installed at the top and bottom. The other end of the livestock and poultry house 1 is equipped with multiple first fans 10. During the hot summer period, the livestock and poultry house 1 adopts large-volume negative pressure ventilation to increase the perceived wind speed of the livestock and poultry inside the livestock and poultry house 1. When the outdoor temperature exceeds the range of the perceived wind speed, the water curtain 2 can be opened to cool down and cooperate with ventilation.

[0028] During the cool spring and autumn seasons, when the outdoor temperature is not high, fresh air is evenly distributed into the building through ventilation duct 6 and air outlet duct 7, and the first fan 10 discharges waste gas to form air circulation, achieving ventilation with a small air volume.

[0029] The air inlet duct 15 is made of a high thermal conductivity material, such as aluminum alloy, and the outer surface of the air inlet duct 15 is provided with a corrugated groove 16 to increase the heat exchange area.

[0030] The first fan 10, the exhaust fan 11, and the second fan 14 are all rare earth permanent magnet fans. They are operated by using permanent magnet motors. The direct drive method effectively reduces the power consumption of the fans and makes them more energy-efficient while maintaining stable operation.

[0031] Both the water curtain 2 and the air guide window 3 are equipped with a hinged flap 4 at the top. The flap 4 is hinged to the livestock and poultry house 1. The opening and closing degree can be adjusted by the flap 4. The flap 4 is installed by hinge and can be easily positioned by using external support rods.

[0032] Working principle: In the cool spring and autumn seasons, when the outdoor temperature is not high, fresh air is evenly distributed into the building through ventilation duct 6 and air outlet duct 7, and the first fan 10 exhausts the waste gas to form air circulation, thus achieving ventilation with a small air volume.

[0033] During the hot summer months, livestock house 1 adopts high-volume negative pressure ventilation to increase the perceived wind speed for livestock inside livestock house 1. When the outdoor temperature exceeds the range that the perceived wind speed can withstand, water curtain 2 can be turned on to cool down in conjunction with ventilation.

[0034] In winter, the second fan 14 starts, and cold air from outside enters the ventilation duct 6 through the air inlet duct 15. The heat exchange pipe 8 outside the air inlet duct 15 absorbs the residual heat discharged from the exhaust pipe 9. After the cold air is preheated, it is sent into the shed through the air outlet duct 7 to maintain a stable temperature inside the shed. The air outlet duct 7 on the ground 5 forms a vertical laminar flow, which helps to avoid dead air zones and uses the residual heat of the exhaust to preheat the air entering the shed. The suitable temperature can avoid stress to the animals and also helps to reduce the power consumption of the heating equipment, making it highly practical.

[0035] By implementing large air volume, small air volume, and hot air supply, the three ventilation methods can better cope with different seasonal climates and facilitate the full adaptation of livestock and poultry in the shed. In winter, the waste heat in the shed can be used to preheat the fresh air, which can reduce energy consumption and achieve energy conservation and emission reduction while avoiding animal stress.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A three-stage environmental control system for livestock and poultry houses with heat recovery, characterized in that, Including livestock and poultry house (1), the livestock and poultry house (1) bottom is ground (5), the ground (5) inside symmetry is provided with ventilation channel (6), the ventilation channel (6) top equidistantly is provided with the air outlet that communicates with livestock and poultry house (1) inside, one end of the ventilation channel (6) is solidly provided with air inlet pipe (15), one end of the air inlet pipe (15) is solidly provided with second fan (14); The livestock and poultry house (1) outside solidly is provided with heat exchange pipe (8) that covers in the air inlet pipe (15) outside, one side of the heat exchange pipe (8) is solidly provided with exhaust pipe (9), the top of the heat exchange pipe (8) is solidly provided with branch pipe (13), the branch pipe (13) is connected with the top of livestock and poultry house (1) by exhaust assembly.

2. A three-stage environmental control system with heat recovery for livestock and poultry houses according to claim 1, characterized in that, One end of the livestock and poultry house (1) is provided with water curtain (2) and air guide window (3) arranged in upper and lower, the other end of the livestock and poultry house (1) is provided with a plurality of first fan (10).

3. A three-stage environmental control system for livestock and poultry buildings with heat recovery according to claim 2, characterized in that, The exhaust assembly includes exhaust fan (11) solidly arranged on the top of livestock and poultry house (1) and gas conveying pipe (12) solidly arranged on the top end of exhaust fan (11), the branch pipe (13) is connected with gas conveying pipe (12).

4. A three-stage environmental control system with heat recovery for livestock and poultry houses according to claim 3, characterized in that, The top of the air outlet is solidly provided with air outlet pipe (7), and the top of the air outlet pipe (7) extends above the ground (5).

5. A three-stage environmental control system for livestock and poultry buildings with heat recovery according to claim 4, characterized in that, The air inlet pipe (15) is made of high thermal conductivity material, and the outer surface of the air inlet pipe (15) is provided with wave groove (16).

6. A three-stage environmental control system with heat recovery for livestock and poultry houses according to claim 5, characterized in that, The first fan (10), exhaust fan (11) and second fan (14) are all rare earth permanent magnet fan.

7. A three-stage environmental control system with heat recovery for livestock and poultry houses according to claim 2, characterized in that, The top of the water curtain (2) and air guide window (3) is movably provided with flap (4), and the flap (4) is hinged with the livestock and poultry house (1).

8. A three-stage environmental control system with heat recovery for livestock and poultry houses according to claim 3, characterized in that, The outer surface of the gas conveying pipe (12) and branch pipe (13) is covered with heat preservation cotton.

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