A negative pressure longitudinal ventilation device for closed poultry houses
By designing a negative pressure longitudinal ventilation device for enclosed poultry houses, negative pressure ventilation is created using exhaust fans and blowers. Combined with sensors and an automatic cleaning system, the problem of waste breeding in enclosed environments is solved, the health and growth environment of poultry are improved, and the breeding efficiency is increased.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI HAOER POULTRY IND CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-06-09
AI Technical Summary
In enclosed poultry farming environments, waste breeds harmful microorganisms and releases harmful gases, affecting poultry health, leading to decreased feed intake, slow growth, reduced immunity, and increased risk of disease and death.
Design a negative pressure longitudinal ventilation device for closed poultry houses. It uses exhaust fans and blowers to create negative pressure longitudinal ventilation, combined with sensors to monitor environmental parameters, and collects waste through a ring frame and ground grid structure. The collection trough is automatically cleaned by a winding mechanism to achieve air exchange and waste treatment.
It effectively reduces dead corners and odor accumulation, prevents waste accumulation, improves air circulation, reduces the concentration of harmful gases, improves the poultry growth environment, reduces the risk of disease, and improves breeding efficiency.
Smart Images

Figure CN224330135U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of poultry farming, and in particular to a negative pressure longitudinal ventilation device for closed poultry houses. Background Technology
[0002] With the large-scale and intensive development of the poultry farming industry, the closed-system farming model has been widely used in modern poultry farms due to its advantages such as effectively controlling the indoor environment, reducing the spread of diseases, and improving farming efficiency. However, poultry growth faces many environmental challenges in a closed-system farming environment.
[0003] Poultry produce a lot of feces and feed residue in their daily activities. If these wastes are not cleaned and discharged in a confined space in time, they will breed harmful microorganisms such as bacteria and mold, and release harmful gases such as ammonia and hydrogen sulfide. This will seriously affect the respiratory health of poultry, leading to decreased feed intake, slow growth, and reduced immunity, thereby increasing the risk of disease and death and causing serious economic losses to farmers.
[0004] Therefore, it is necessary to propose a negative pressure longitudinal ventilation device for closed poultry houses to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a negative pressure longitudinal ventilation device for closed poultry houses to solve the problem that poultry produce a large amount of feces and feed residue during their daily activities. If these wastes are not cleaned and discharged in a closed space in a timely manner, they will breed harmful microorganisms such as bacteria and mold, and release harmful gases such as ammonia and hydrogen sulfide, which will seriously affect the respiratory health of poultry, leading to decreased feed intake, slow growth, and reduced immunity, thereby increasing the risk of disease and death, and causing serious economic losses to farmers.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure longitudinal ventilation device for a closed poultry house, comprising:
[0007] The main body of the sealed breeding shed;
[0008] A collection trough, which is fixed to the bottom of the sealed feeding shed body;
[0009] The top of the collection tank is fixed with a second ground grid, the top edge of the second ground grid is fixedly connected with an annular frame, and the top of the annular frame is fixedly connected with a first ground grid.
[0010] A blower and a fan are respectively connected to both sides of the annular frame;
[0011] The collection tank is slidably connected to a waste pusher plate, and a through groove is opened on one side of the collection tank, which is connected to the outside.
[0012] Preferably, the exhaust fan and the blower are both located outside the main body of the sealed breeding house, and multiple air ducts are connected to both sides of the annular frame, with each air duct connected to a corresponding exhaust fan and blower.
[0013] Solenoid valves are installed on the multiple air ducts.
[0014] Preferably, the inside of the collection tank has sliding grooves on both sides along the length direction, and the waste push plate is slidably installed between the two sliding grooves.
[0015] Preferably, connecting ropes are fixed on both sides of the waste pusher plate, and the ends of the two connecting ropes are respectively connected to a winding mechanism.
[0016] Two winding mechanisms are respectively located on both sides of the exterior of the sealed breeding shed.
[0017] Preferably, the winding mechanism includes a housing, a winding shaft is rotatably connected inside the housing, a motor is fixed inside the housing, and the drive shaft of the motor is connected to one end of the winding shaft.
[0018] Preferably, a temperature sensor, a humidity sensor, and an ammonia sensor are fixed inside the annular frame.
[0019] The technical effects and advantages of this utility model are as follows:
[0020] 1. In the actual operation of this utility model, the first ground net provides an activity area for poultry. Its outer side is connected to the inner wall of the sealed feeding house. Poultry can stand on the first ground net, and poultry excrement and fallen feed residues and other wastes can pass through the first ground net and the second ground net, and finally fall into the collection trough for collection.
[0021] 2. Through the action of the exhaust fan, a negative pressure can be formed between the first and second ground nets to create a longitudinal ventilation environment that draws in the vertical range of the first and second ground nets, reducing dead corners and odor accumulation. In addition, feed residue and other waste will not accumulate between the first and second ground nets, reducing exhaust pressure.
[0022] 3. In the actual operation of this utility model, the two winding mechanisms can be used in conjunction. One winding mechanism releases the waste material while the other winding mechanism rewinds it, so that the waste pusher plate can move in the collection trough, which facilitates pushing the waste material inside the collection trough out of the through trough for easy cleaning. At the same time, since the through trough is connected to the outside, when there is less waste inside, the air inside the collection trough can be exchanged with the outside air when the exhaust fan and blower are not running. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the negative pressure longitudinal ventilation device for a closed poultry house according to this utility model.
[0024] Figure 2 This is a schematic diagram of the structure of the ring frame of this utility model.
[0025] Figure 3 This is a schematic diagram of the connecting rope and winding mechanism of this utility model.
[0026] In the diagram: 1. First grounding grid; 2. Ring frame; 3. Second grounding grid; 4. Collection trough; 5. Blower; 6. Air duct; 7. Exhaust fan; 8. Through groove; 9. Sliding groove; 10. Waste pusher plate; 11. Connecting rope; 12. Winding mechanism. Detailed Implementation
[0027] This utility model provides, for example Figures 1-3 The illustrated negative pressure longitudinal ventilation device for a closed poultry house includes:
[0028] The sealed breeding shed forms the main body of the poultry breeding space. It has good sealing performance to prevent outside air and germs from entering at will, providing a relatively stable growth environment for poultry. Its regular shape and spacious interior can meet the activity needs of a certain number of poultry.
[0029] Collection trough 4 is fixed to the bottom of the sealed breeding house body;
[0030] The top of the collection trough 4 is fixed with a second ground net 3, the top edge of the second ground net 3 is fixedly connected with a ring frame 2, the top of the ring frame 2 is fixedly connected with a first ground net 1, the first ground net 1 and the second ground net 3 are metal mesh or plastic mesh structures with ventilation holes. The first ground net 1 facilitates the movement of poultry on it and ensures good air circulation at the bottom of the breeding house.
[0031] In the actual operation of this utility model, the first ground net 1 provides an activity area for poultry. Its outer side is connected to the inner wall of the sealed breeding house. Poultry can stand on the first ground net 1, and the poultry's excrement and fallen feed residues and other wastes can pass through the first ground net 1 and the second ground net 3, and finally fall into the collection trough 4 to complete the collection.
[0032] The two sides of the ring frame 2 are respectively connected to the exhaust fan 7 and the blower 5;
[0033] Inside the ring frame 2 are fixed temperature sensors, humidity sensors, and ammonia sensors. The temperature sensors monitor changes in the temperature inside the shed in real time, providing a suitable growing temperature environment for the poultry. The humidity sensors detect the humidity inside the shed, preventing excessively high or low humidity from affecting the poultry's health. The ammonia sensors monitor the ammonia concentration inside the shed, preventing excessive ammonia from harming the poultry's respiratory system.
[0034] Furthermore, through the action of the exhaust fan 7, a negative pressure can be formed between the first ground net 1 and the second ground net 3 to create a longitudinal ventilation environment that draws in the vertical range of the first ground net 1 and the second ground net 3, reducing dead corners and odor accumulation. Also, waste such as feed residue will not accumulate between the first ground net 1 and the second ground net 3, reducing exhaust pressure.
[0035] By adding a hair dryer 5 and using it in conjunction with an exhaust fan 7, air circulation can be accelerated.
[0036] The collection trough 4 is slidably connected to a waste pusher plate 10, and a through trough 8 is opened on one side of the collection trough 4, which is connected to the outside. The exhaust fan 7 and the blower 5 are both located outside the main body of the sealed breeding house. Multiple air ducts 6 are connected to both sides of the ring frame 2. The multiple air ducts 6 are respectively connected to the corresponding exhaust fan 7 and blower 5. Solenoid valves are installed on the multiple air ducts 6.
[0037] The corresponding number of air ducts 6 can be opened as needed to increase or decrease the airflow.
[0038] The inside of the collection trough 4 has sliding grooves 9 on both sides along the length direction. The waste push plate 10 is slidably installed between the two sliding grooves 9. The waste push plate 10 has connecting ropes 11 fixed on both sides. The ends of the two connecting ropes 11 are respectively connected to winding mechanisms 12. The two winding mechanisms 12 are respectively set on both sides of the outside of the sealed breeding house.
[0039] Specifically, the winding mechanism 12 includes a housing, a winding shaft rotatably connected inside the housing, a motor fixed inside the housing, and a drive shaft of the motor connected to one end of the winding shaft.
[0040] In the actual operation of this utility model, the two winding mechanisms 12 can be used in cooperation. One winding mechanism 12 releases and the other winding mechanism 12 rewinds, so that the waste pusher plate 10 can move in the collection tank 4, which facilitates pushing the waste inside the collection tank 4 out of the through groove 8 for easy cleaning. At the same time, since the through groove 8 is connected to the outside, when there is less waste inside, the air inside the collection tank 4 can be exchanged with the outside air when the exhaust fan 7 and the blower 5 are not running.
Claims
1. A negative pressure longitudinal ventilation device for a closed poultry house, characterized in that: include: The main body of the sealed breeding shed; Collection trough (4), which is fixed to the bottom of the sealed feeding house body; The top of the collection trough (4) is fixed with a second ground grid (3), the top edge of the second ground grid (3) is fixedly connected with an annular frame (2), and the top of the annular frame (2) is fixedly connected with a first ground grid (1). The two sides of the annular frame (2) are respectively connected to an exhaust fan (7) and a blower (5); The collection trough (4) is slidably connected to a waste pusher plate (10), and a through groove (8) is provided on one side of the collection trough (4), which is connected to the outside.
2. The negative pressure longitudinal ventilation device for a closed poultry house according to claim 1, characterized in that: The exhaust fan (7) and blower (5) are both located outside the main body of the sealed breeding house. Multiple air ducts (6) are connected to both sides of the ring frame (2). The multiple air ducts (6) are respectively connected to the corresponding exhaust fan (7) and blower (5). Solenoid valves are installed on the multiple air ducts (6).
3. The negative pressure longitudinal ventilation device for a closed poultry house according to claim 1, characterized in that: The collection trough (4) has sliding grooves (9) on both sides along the length direction, and the waste push plate (10) is slidably installed between the two sliding grooves (9).
4. The negative pressure longitudinal ventilation device for a closed poultry house according to claim 1, characterized in that: Both sides of the waste push plate (10) are fixed with connecting ropes (11), and the ends of the two connecting ropes (11) are respectively connected to a winding mechanism (12). Two winding mechanisms (12) are respectively set on both sides of the exterior of the sealed breeding house.
5. The negative pressure longitudinal ventilation device for a closed poultry house according to claim 4, characterized in that: The winding mechanism (12) includes a housing, a winding shaft is rotatably connected inside the housing, a motor is fixed inside the housing, and the drive shaft of the motor is connected to one end of the winding shaft.
6. The negative pressure longitudinal ventilation device for a closed poultry house according to claim 1, characterized in that: A temperature sensor, a humidity sensor, and an ammonia sensor are fixed inside the annular frame (2).