A ventilation system that increases the supply air velocity by exhausting air from the bottom plate.

Abstract

This utility model discloses a ventilation system that utilizes exhaust air from the bottom plate to increase the air supply velocity, belonging to the field of pigsty ventilation technology. It includes a horizontally installed ceiling that divides the pigsty into upper and lower air supply zones and a rearing zone. Both the air supply zone and the rearing zone are connected to the left-end air inlet channel; the rearing zone and the bottom manure ditch are both connected to the right-end exhaust channel. The ceiling has uniformly spaced air supply windows connecting the air supply zone and the rearing zone. A wind-blocking partition wall is installed at the right end of the rearing zone, close to the fan and completely blocking the exhaust channel; an exhaust base plate is installed at the bottom of the wind-blocking partition wall, connecting to the exhaust channel. During ventilation, the air is forced downwards by the partition wall to the exhaust base plate and then flows into the exhaust channel. Through the coordinated design of the wind-blocking partition wall and the exhaust base plate, it guides the air to be concentrated and pressed downwards into the exhaust channel, increasing the actual wind speed at the pigsty to enhance the cooling effect and solving the problem of insufficient ventilation velocity in traditional systems.

Description

Technical Field

[0001] This utility model relates to the field of pigsty ventilation technology, specifically a ventilation system that utilizes exhaust air from the bottom plate to increase the air supply velocity. Background Technology

[0002] With the development of large-scale pig farming, environmental parameters in pigsties, such as temperature, humidity, ventilation, and air quality, have a crucial impact on the health, growth, development, and production performance of pigs. The ventilation system is one of the core devices for regulating the pigsty environment.

[0003] In existing technologies, pigsty ventilation systems commonly suffer from insufficient airflow velocity. When outside air enters the breeding area through the air supply windows, the negative pressure fans are usually located at one end of the pigsty. Pigs in the breeding area near the fans may experience low airflow velocity due to rapid air loss or direct suction, especially in pigs farther from the fans. Insufficient airflow velocity affects the cooling effect and can easily lead to heat stress in pigs during hot seasons. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a ventilation system that uses exhaust air at the bottom plate end to increase the air supply velocity. Through the coordinated design of the wind-blocking partition wall and the exhaust bottom plate, the air is guided to be concentrated and pressed down to the exhaust channel, thereby increasing the actual wind speed in the pig position to enhance the air cooling effect and solving the problem of insufficient ventilation velocity in traditional systems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A ventilation system that utilizes exhaust ventilation at the bottom of a base plate to increase the air supply velocity includes a suspended ceiling horizontally installed on the top of the shed, which divides the interior space of the shed vertically into an air supply area and a breeding area. Both the air supply area and the breeding area are connected to an air intake duct at the left end of the shed, while the breeding area and the manure ditch at the bottom of the shed are connected to an exhaust duct at the right end of the shed. The suspended ceiling has multiple evenly distributed air supply windows that connect the air supply area and the breeding area. The core improvement lies in: a wind-blocking partition wall located near the fan and completely isolated from the exhaust duct is provided on the right side of the breeding area; an exhaust base plate located at the bottom of the wind-blocking partition wall and connected to the exhaust duct is provided on the bottom surface of the right end of the breeding area. During ventilation, the air inside the shed is concentrated and forced downwards from the exhaust base plate into the exhaust duct.

[0006] By adopting the above solution, the original ventilation path is changed by the wind-blocking partition wall during ventilation, avoiding direct airflow impact on the fan or turbulence. The forced air is concentrated and pressed down from the exhaust floor to the exhaust channel, resulting in a higher wind speed in the pig area, with an actual wind speed of 1.6-2 m / s. In summer, the perceived temperature of pigs can be reduced by 2-3℃, reducing heat stress and improving ventilation efficiency.

[0007] As a preferred embodiment of a ventilation system that utilizes exhaust air from the bottom plate to increase the air supply velocity, the windbreak partition is a flat wall that is vertically installed on the right side of the breeding area. This structure is the simplest to process, has low cost, and is easy to construct.

[0008] As a preferred embodiment of a ventilation system that utilizes exhaust air at the bottom plate to increase the supply air velocity, the wind-blocking partition is a flat or curved wall that is inclined upwards on the right side of the breeding area, facing away from the exhaust duct. Since the wind-blocking partition is inclined as a whole, there is no need to use a guide plate. The airflow can flow naturally downwards after contacting the partition, reducing the air trapped at the top and enhancing the downward pressure effect. The curved wall can further reduce the frictional resistance between the airflow and the guide plate, and its guiding effect is better than that of the flat wall.

[0009] As a preferred embodiment of a ventilation system that utilizes exhaust air from the bottom plate to increase the supply air velocity, the windbreak partition is a transparent glass wall. This transparent glass wall is made of multi-layered vacuum-sealed glass, which not only has better light transmission but also better heat insulation and noise reduction effects.

[0010] As a preferred embodiment of a ventilation system that utilizes exhaust air from the bottom plate to increase the supply air velocity, an air intake water curtain is installed between the air intake duct and the outside environment to initially cool (approximately 3-5°C), remove dust, and humidify the outside air entering the entire system; an air intake water curtain is installed between the breeding area and the air intake duct to perform secondary fine-tuning (supplementary cooling of 1-2°C) on the air entering the breeding area, avoiding excessive increase in system resistance; wherein, the coverage area of ​​water curtain one is larger than that of water curtain two, further improving the initial cooling effect.

[0011] As a preferred embodiment of a ventilation system that utilizes exhaust at the bottom of the base plate to increase the air supply velocity, a negative pressure fan is installed between the exhaust duct and the outside. When the negative pressure fan is running, a negative pressure is formed in the exhaust duct, driving the air in the breeding area to flow quickly through the exhaust base plate to the exhaust duct and be discharged outside the house, forming a stable airflow cycle of "air supply-pressure-exhaust".

[0012] The beneficial effects of this utility model are: 1. Increase the air velocity in the pig area and enhance the cooling effect: During ventilation, the original ventilation path is changed by the wind-blocking partition wall to avoid the airflow directly impacting the fan or causing turbulence. The forced air is concentrated and pressed down from the exhaust floor to the exhaust channel, resulting in a higher air velocity in the pig area. The actual air velocity reaches 1.6-2m / s. In summer, the perceived temperature of pigs can be reduced by 2-3℃, reducing heat stress and improving ventilation efficiency.

[0013] 2. Improve airflow guidance effect: The wind-blocking partition is tilted as a whole, which allows the airflow to flow naturally downward after contacting the partition, reducing the amount of air trapped at the top and enhancing the downward pressure effect.

[0014] 3. Good light transmission: The wind-blocking partition wall is a transparent glass wall, which is made of multi-layer vacuum-sealed glass. It not only has better light transmission, but also better heat preservation and noise reduction.

[0015] 4. Double-layer water curtain pretreatment, energy saving and high efficiency: Water curtain one has a larger coverage area, taking into account the overall cooling needs; water curtain two finely regulates the air in the breeding area, balancing cooling and energy consumption, and the fan energy consumption is lower than that of traditional systems.

[0016] 5. Simple structure and easy to modify: By adding wind-blocking partitions, exhaust floor plates and sound insulation layers, it can be modified at low cost on the basis of existing pig houses, and has strong applicability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the main structure of the ventilation system. Figure 2 This is a partial structural diagram of the ventilation system on the left side. Figure 3 This is a partial structural diagram of the ventilation system on the right side in Example 1; Figure 4 This is a partial structural diagram of the ventilation system on the right side in Example 2; Figure 5 This is a partial structural diagram of the ventilation system on the right side in Example 3; Figure 6 To measure the wind speed distribution within a building using CFD simulation software.

[0019] Attached diagram labels: 1-House; 2-Ceiling; 3-Air supply area; 4-Livestock area; 5-Air inlet duct; 6-Exhaust duct; 7-Manure ditch; 8-Air supply window; 9-Windproof partition wall; 10-Exhaust floor plate; 11-Water curtain one; 12-Water curtain two; 13-Negative pressure fan. Detailed Implementation

[0020] 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.

[0021] Example 1, as Figure 1 As shown, a ventilation system that utilizes exhaust air from the bottom plate to increase the air supply velocity is applied in a pigsty. It includes a suspended ceiling 2 horizontally installed on the top of the pigsty 1, which divides the interior space of the pigsty 1 vertically into an air supply area 3 and a breeding area 4.

[0022] like Figure 2 As shown, both the air supply area 3 and the breeding area 4 are connected to the air intake duct 5 at the left end of the building 1. A water curtain 11 is installed between the air intake duct 5 and the outside to initially cool (about 3-5℃), remove dust, and humidify the outside air entering the entire system. A water curtain 2 12 is installed between the breeding area 4 and the air intake duct 5 to perform secondary fine adjustment (supplementary cooling of 1-2℃) on the air entering the breeding area 4, avoiding excessive increase in system resistance. The coverage area of ​​water curtain 11 is larger than that of water curtain 2 12, further improving the initial cooling effect.

[0023] like Figure 3 As shown, the breeding area 4 and the manure ditch 7 at the bottom of the house 1 are connected to the exhaust duct 6 at the right end of the house 1. A negative pressure fan 13 is installed between the exhaust duct 6 and the outside. When the negative pressure fan 13 is running, a negative pressure is formed in the exhaust duct 6, which drives the air in the breeding area 4 to flow quickly through the exhaust bottom plate 10 to the exhaust duct 6 and be discharged outside the house, forming a stable airflow cycle of "air supply-pressure-exhaust".

[0024] like Figure 1 As shown, the ceiling 2 is equipped with multiple evenly distributed air supply windows 8 that connect the air supply area 3 and the breeding area 4.

[0025] like Figure 3 As shown, the right side of the breeding area 4 is provided with a wind-blocking partition wall 9 that is close to the fan and completely blocked from the exhaust duct 6. The wind-blocking partition wall 9 is a flat wall that is vertically set on the right side of the breeding area 4. This structure is the simplest to process, low in cost and convenient to construct.

[0026] Continue as Figure 3 As shown, the bottom right end of the breeding area 4 is provided with an exhaust floor plate 10 located at the bottom of the windbreak partition wall 9 and connected to the exhaust channel 6. During ventilation, the air in the house 1 is concentrated and pressed down from the exhaust floor plate 10 into the exhaust channel 6.

[0027] Working principle: such as Figure 1 , Figure 6 As shown, during ventilation, the original ventilation path is changed by the wind-blocking partition 9 to avoid the airflow directly impacting the fan or causing turbulence. The forced air is concentrated and pressed down from the exhaust floor 10 into the exhaust channel 6, resulting in a higher wind speed in the pig area. The actual wind speed reaches 1.6-2 m / s, which can reduce the perceived temperature of pigs by 2-3℃ in summer, reduce heat stress, and improve ventilation efficiency.

[0028] Example 2, as Figure 4 As shown, the difference between this embodiment and embodiment one is that, based on embodiment one, the windbreak wall 9 is a flat wall that is inclined upwards and located on the right side of the breeding area 4, facing away from the exhaust channel 6. Since the windbreak wall 9 is inclined as a whole, there is no need to use the guide plate. The airflow can flow downwards naturally after contacting the wall, reducing the air trapped at the top and enhancing the downward pressure effect.

[0029] Example 3, as Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that, based on Embodiment 1, the windbreak wall 9 is an arc-shaped wall that is inclined upwards and located on the right side of the breeding area 4, facing away from the exhaust channel 6. Since the windbreak wall 9 is inclined as a whole, the airflow can flow naturally downwards after contacting the wall without the need for the guide plate, reducing the air trapped at the top and enhancing the downward pressure effect. The arc-shaped wall can further reduce the frictional resistance between the airflow and the guide plate, and its guiding effect is better than that of a flat wall.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A ventilation system that utilizes exhaust ventilation at the bottom of a base plate to increase the air supply velocity, comprising a suspended ceiling horizontally installed on the top of a building, the suspended ceiling dividing the interior space of the building vertically into an air supply area and a breeding area; both the air supply area and the breeding area are connected to an air inlet channel at the left end of the building, and both the breeding area and the manure ditch at the bottom of the building are connected to an exhaust ventilation channel at the right end of the building; the suspended ceiling is provided with multiple evenly distributed air supply windows that connect the air supply area and the breeding area; Its features are: The right side of the breeding area is equipped with a wind-blocking partition wall that is close to the fan and completely separates it from the exhaust duct; the bottom right side of the breeding area is equipped with an exhaust floor plate that is located at the bottom of the wind-blocking partition wall and connected to the exhaust duct. During ventilation, the air in the shed is concentrated and pressed down from the exhaust floor plate into the exhaust duct.

2. The ventilation system for increasing the supply air velocity by utilizing exhaust air from the bottom plate as described in claim 1, characterized in that: The wind-blocking partition wall is a flat wall that is vertically installed on the right side of the breeding area.

3. The ventilation system for increasing the supply air velocity by utilizing exhaust air from the bottom plate as described in claim 1, characterized in that: The wind-blocking partition wall is a flat wall that is inclined upwards and located on the right side of the breeding area, facing away from the exhaust duct.

4. The ventilation system for increasing the supply air velocity by utilizing exhaust air from the bottom plate as described in claim 1, characterized in that: The wind-blocking partition wall is an arc-shaped wall that is inclined upwards and located on the right side of the breeding area, facing away from the exhaust duct.

5. The ventilation system for increasing the supply air velocity by utilizing exhaust air from the bottom plate as described in claim 1, characterized in that: The wind-blocking barrier is a transparent glass wall.

6. The ventilation system for increasing the supply air velocity by utilizing exhaust air from the bottom plate as described in claim 1, characterized in that: A water curtain is installed between the air intake channel and the outside; a second water curtain is installed between the breeding area and the air intake channel.

7. The ventilation system for increasing the supply air velocity by utilizing exhaust air from the bottom plate as described in claim 6, characterized in that: The coverage area of ​​water curtain one is greater than that of water curtain two.

8. The ventilation system for increasing the supply air velocity by utilizing exhaust air from the bottom plate as described in claim 1, characterized in that: A negative pressure fan is installed between the exhaust duct and the outside.

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