Ventilation system for hog house

Abstract

The utility model provides a ventilation system for a hog house. The ventilation system comprises an air supply device arranged outside the hog house; the preheating pipe is arranged in a manure ditch of the hog house and connected with the air supply device, and air is supplied into the preheating pipe through the air supply device; the air inlet pipe is arranged in the pig house, the air inlet pipe is connected with the preheating pipe, and a plurality of air outlets are formed in the air inlet pipe; the trench fan is fixed on the outer side of the wall body of the hog house and is used for extracting air in the manure trench; according to the air supply device, a positive pressure fan and an air filter are arranged in a shell, the positive pressure fan is connected with the preheating pipe through a hose, and the air filter is arranged on the side, away from the preheating pipe, of the positive pressure fan; the multi-layer protective net is connected with the shell, arranged on the side, away from the hose, of the shell and used for blocking sundries outside the shell. The ventilation system for the hog house solves the technical problems that in the prior art, a positive pressure ventilation mode is single in function, and the air quality in the hog house cannot be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of breeding, in particular to a ventilation system for a pig house. Background Art

[0002] At present, livestock and poultry houses mostly use negative pressure ventilation systems, which are characterized by maintaining a negative pressure environment in the house. The negative pressure ventilation mode needs to meet the requirements of good sealing of the building structure and a certain perceived wind speed, but in the actual construction and application process, there are often problems such as poor building sealing and low wind speed in the activity space of the pig house.

[0003] In order to solve the above problems, the newly built farms installed positive pressure fans on the walls of the pig houses, sending the filtered fresh air into the preheating pipe in the manure ditch, and then into the pig houses through the preheating pipe. Finally, the exhaust gas in the pig house enters the manure ditch through the holes on the floor of the pig house, and is then extracted by the ditch fan. Although this design enhances the tolerance of the building structure, if the house is not well sealed, the outside air will not enter the house. However, infectious diseases such as African swine fever often occur frequently in cold seasons. The inhaled outside air directly enters the pig house without being treated, which can easily lead to the spread of diseases and affect the health of the pigs.

[0004] Therefore, the prior art needs to be further developed. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies and provide a ventilation system for a pig house to solve the technical problem that the positive pressure ventilation mode in the related technology has a single function and cannot guarantee the air quality inside the pig house.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a ventilation system for a pig house is provided, including: an air supply device, which is arranged outside the pig house; a preheating pipe, which is arranged in the manure ditch of the pig house, the preheating pipe is connected to the air supply device, and air is sent into the preheating pipe through the air supply device; an air inlet pipe, which is arranged in the pig house, the air inlet pipe is connected to the preheating pipe, and a plurality of exhaust ports are arranged on the air inlet pipe; a trench fan, which is fixed on the outside of the wall of the pig house, and the trench fan is used to extract the air in the manure ditch; the air supply device includes: a shell, a positive pressure fan and an air filter are arranged in the shell, the positive pressure fan is connected to the preheating pipe through a hose, the air filter is arranged on a side of the positive pressure fan away from the preheating pipe, and the air filter is used to filter the air entering the shell; a multi-layer protective net, which is connected to the shell, the multi-layer protective net is arranged on a side of the shell away from the hose, and the multi-layer protective net is used to block debris outside the shell.

[0007] Furthermore, the ventilation system for the pig house also includes an air exchange fan, which is fixed on the outside of the pig house wall. The air outside the pig house enters the pig house through the ventilation holes of the pig house, and the air exchange fan is used to exchange air with the air entering the pig house.

[0008] Furthermore, the multi-layer protection net is formed by superimposing three protection nets, and the mesh sizes of the three protection nets are different.

[0009] Furthermore, the air supply device also includes a rain cover, which is connected to the shell and is arranged on a side of the multi-layer protective net away from the air filter.

[0010] Furthermore, the air supply device and the trench fan are located on opposite sides of the pig house.

[0011] Furthermore, the vents and the air exchange fans are located on opposite sides of the pig house.

[0012] Furthermore, the trench fan and the air exchange fan are both arranged on the same side wall of the pig house.

[0013] Furthermore, the air inlet duct is arranged above the aisle in the pig house, and the air inlet duct is arranged parallel to the aisle.

[0014] Furthermore, a plurality of air outlets are arranged at intervals along the extension direction of the air inlet pipe, and the interval distance between two adjacent air outlets is the same.

[0015] Furthermore, the ventilation system for the pig house also includes a controller, which controls the opening and closing of the positive pressure fan, the trench fan and the air exchange fan respectively. A temperature sensor is arranged on the wall of the pig house, and the temperature sensor is used to detect the temperature outside the house. The controller is connected with the temperature sensor signal.

[0016] Beneficial effects:

[0017] 1. With the ventilation system of the utility model, a multi-layer protective net is arranged on the outside of the shell of the air supply device to prevent rodents and insects from entering the house. An air filter is arranged on the inside of the shell, which not only effectively inhibits the spread of diseases, but also can further filter and purify the quality of the air supplied, thereby ensuring the living environment of the pigs in the pig house.

[0018] 2. The ventilation system of the utility model monitors the ambient temperature outside the house in real time through a temperature sensor. The positive pressure ventilation mode is selected in cold seasons, and the conventional negative pressure ventilation is used in summer. The two ventilation modes can be switched freely according to seasonal changes to achieve automatic environmental control.

[0019] 3. The ventilation system of the utility model combines the positive pressure air supply mode with the fresh air preheating. The filtered air uses the underground preheating pipe to exchange heat with the gas in the manure ditch. The heat of the exhaust gas discharged in the house is used to increase the fresh air temperature, reduce the cold stress of the pigs, and reduce energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a ventilation system for a pig house adopted in an embodiment of the utility model from one perspective;

[0021] Figure 2 yes Figure 1 A partial enlarged view of part A;

[0022] Figure 3 It is a schematic diagram of air flow in the positive pressure ventilation mode adopted in the embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of another perspective of the ventilation system for pig houses adopted in the embodiment of the utility model.

[0024] The above drawings include the following reference numerals:

[0025] 1. Air supply device; 11. Shell; 12. Positive pressure fan; 13. Air filter; 14. Hose; 15. Multi-layer protective net; 16. Rain cover; 2. Pig house; 21. Manure ditch; 22. Ventilation hole; 23. Walkway; 24. Wet curtain; 25. Pig pen; 3. Preheating pipe; 4. Air inlet pipe; 41. Exhaust outlet; 5. Trench fan; 6. Air exchange fan. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] According to an embodiment of the utility model, a ventilation system for a pig house is provided. Figures 1 to 4, including: an air supply device 1, which is arranged outside the pig house 2; a preheating pipe 3, which is arranged in the manure ditch 21 of the pig house 2, and the preheating pipe 3 is connected to the air supply device 1, and the air is sent into the preheating pipe 3 through the air supply device 1; an air inlet pipe 4, which is arranged in the pig house 2, and the air inlet pipe 4 is connected to the preheating pipe 3, and the air inlet pipe 4 is provided with a plurality of exhaust ports 41; a trench fan 5, which is fixed on the outer side of the wall of the pig house 2, and the trench fan 5 is used to extract the air in the manure ditch 21; the air supply device The invention comprises: a shell 11, in which a positive pressure fan 12 and an air filter 13 are arranged, the positive pressure fan 12 is connected to the preheating pipe 3 through a hose 14, the air filter 13 is arranged on a side of the positive pressure fan 12 away from the preheating pipe 3, and the air filter 13 is used to filter the air entering the shell 11; a multi-layer protection net 15, the multi-layer protection net 15 is connected to the shell 11, the multi-layer protection net 15 is arranged on a side of the shell 11 away from the hose 14, and the multi-layer protection net 15 is used to block the sundries outside the shell 11.

[0028] See also Figure 1 and Figure 3 In the ventilation system for pig houses of the present embodiment, the air supply device 1 is used in the positive pressure ventilation mode. When the positive pressure ventilation mode is adopted, the air outside the pig house 2 is sucked in by the positive pressure fan 12, and first filtered by the multi-layer protective net 15 of the air supply device 1, and the rodents, insects and other larger particles carrying viruses and bacteria are removed to prevent the spread of diseases. Then, the air entering the shell 11 is further filtered and purified by the air filter 13, and the purified air is sent to the preheating pipe 3 in the manure ditch 21 through the hose 14, and finally passes from the preheating pipe 3 to the air inlet pipe 4, and then dispersed into the pig house 2 through the exhaust port 41, so as to improve the quality of air entering the house. The manure ditch 21 is set underground, and the ground of the pig house 2 is provided with a through hole, which is connected to the manure ditch 21, so as to facilitate the defecation of the pigs and exhaust into the manure ditch 21. The waste gas generated in the pig house 2 enters the manure ditch 21 through the through hole on the ground, and is extracted by the ditch fan 5 and discharged to the outside of the pig house, thereby realizing ventilation (such as Figure 3 As shown). The preheating pipe 3 is arranged in the upper part of the manure ditch 21, and the underground preheating pipe 3 is used to exchange heat with the gas in the manure ditch 21, and the heat of the waste gas discharged by the pigs in the house is used to increase the temperature of the fresh air, reduce the cold stress of the pigs, and reduce energy waste. The air supply device 1 is connected to the underground preheating pipe 3 with a hose 14, so that the installation position of the air supply device 1 is more flexible and unrestricted. The air supply device 1 is a modular device, which is easy to install and disassemble. It is suitable for use in both new and old pig farms, and can provide air exchange more flexibly and conveniently. The ventilation system for the pig house of this embodiment solves the technical problem that the positive pressure ventilation mode in the related art has a single function and cannot guarantee the air quality inside the pig house 2.

[0029] The ventilation system of this embodiment includes a positive pressure ventilation mode, which can maintain a positive pressure environment in the house and is more tolerant to the building structure. Even if the house is not well sealed, the air outside the house will not enter the house, which can better ensure biosafety. Pig house 2 adopts a positive pressure ventilation mode in winter when the ventilation demand is small, which can effectively inhibit the spread of diseases in winter when African swine fever and some other infectious diseases are frequent.

[0030] See also Figure 1 In the ventilation system for the pig house of this embodiment, the system further includes an air exchange fan 6, which is fixed on the outside of the wall of the pig house 2. The air outside the pig house enters the pig house 2 through the vent 22 of the pig house 2. The air exchange fan 6 is used to exchange air with the air entering the pig house 2. In the hot summer, a conventional negative pressure ventilation mode can be adopted. The air exchange fan 6 fixed on the wall of the pig house 2 extracts the exhaust gas in the pig house 2. In order to achieve pressure balance inside and outside the pig house, the air outside the pig house will first pass through the wet curtain 24. After the wet curtain 24 cools the air, it enters the pig house through the vent 22 to achieve ventilation inside the pig house.

[0031] See also Figure 1 and Figure 2 In the ventilation system for pig houses of this embodiment, the multi-layer protection net 15 is composed of three protection nets stacked together, and the mesh sizes of the three protection nets are all different. The different mesh sizes can filter out debris of different sizes, such as mosquitoes, rodents and dust, and effectively inhibit the spread of diseases.

[0032] See also Figure 2 In the ventilation system for a pig house of this embodiment, the air supply device 1 further includes a rain cover 16, which is connected to the housing 11 and is disposed on a side of the multi-layer protection net 15 away from the air filter 13. The provision of the rain cover 16 effectively reduces the damage to the air supply device 1 caused by wind and rain, and prolongs the service life of the air supply device 1.

[0033] See also Figure 1 In the ventilation system for the pig house of this embodiment, the air supply device 1 and the trench fan 5 are respectively located on opposite sides of the pig house 2. When the positive pressure ventilation mode is adopted, the air supply device 1 ventilates the inside of the pig house 2 on one side of the pig house 2, and the trench fan 5 exhausts air outward on the opposite side of the pig house 2, thereby increasing air circulation and ensuring air supply quality.

[0034] See also Figure 1 In the ventilation system for the pig house of this embodiment, the vents 22 and the air exchange fan 6 are respectively located on opposite sides of the pig house 2. Similarly, when the negative pressure ventilation mode is adopted, the air exchange fan 6 draws air outward on one side of the pig house 2, and the fresh air enters inward through the vents 22 from the opposite side of the pig house 2.

[0035] See also Figure 1In the ventilation system for the pig house of this embodiment, the trench fan 5 and the air exchange fan 6 are both arranged on the same side wall of the pig house 2, and no matter whether the positive pressure ventilation mode or the negative pressure ventilation mode is adopted, it is ensured that the fresh air enters from the same direction.

[0036] See also Figure 3 and Figure 4 In the ventilation system for a pig house of this embodiment, an air inlet pipe 4 is arranged above the walkway 23 in the pig house 2, and the air inlet pipe 4 is arranged parallel to the walkway 23. Pig pens 25 are arranged on both sides of the walkway 23, and multiple pig pens 25 are arranged in parallel to surround multiple pig pens. The air inlet pipe 4 is arranged in parallel above the walkway 23, and the fresh air in the air inlet pipe 4 is distributed to each pig pen in two rows from the exhaust port 41.

[0037] See also Figure 4 In the ventilation system for pig houses of this embodiment, two rows of pig pens arranged in parallel on both sides of the walkway 23 form a compartment. One air supply device 1 is connected to two hoses 14, each hose 14 is connected to a compartment, and fresh air enters the compartment from the hose 14. One air supply device 1 can simultaneously introduce fresh air into two compartments. In practical applications, several hoses 14 can be connected according to the air supply capacity of the air supply device 1 to meet actual breeding needs.

[0038] See also Figure 3 and Figure 4 In the ventilation system for pig houses of the present embodiment, a plurality of exhaust ports 41 are arranged at intervals along the extension direction of the air inlet pipe 4, and the interval distance between two adjacent exhaust ports 41 is the same, so that the fresh air in the air inlet pipe 4 is evenly dispersed from the exhaust ports 41 to each pigsty, to ensure that pigs in different pigsties can breathe fresh air.

[0039] In the ventilation system for the pig house of this embodiment, the ventilation system for the pig house also includes a controller, which controls the opening and closing of the positive pressure fan 12, the trench fan 5 and the air exchange fan 6 respectively. A temperature sensor is provided on the wall of the pig house 2, and the temperature sensor is used to detect the temperature outside the house. The controller is connected to the temperature sensor signal. The ambient temperature outside the house is monitored in real time by the temperature sensor. The positive pressure ventilation mode is selected in cold seasons, and the conventional negative pressure ventilation is used in summer. The two ventilation modes are freely switched according to seasonal changes to realize breeding automation.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0042] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0043] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0044] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A ventilation system for a pig house, characterized in that: include: An air supply device (1), wherein the air supply device (1) is arranged outside the pig house (2); A preheating pipe (3), wherein the preheating pipe (3) is arranged in the manure ditch (21) of the pig house (2), and the preheating pipe (3) is connected to the air supply device (1), and air is supplied into the preheating pipe (3) through the air supply device (1); An air inlet pipe (4), the air inlet pipe (4) being arranged in the pig house (2), the air inlet pipe (4) being connected to the preheating pipe (3), and the air inlet pipe (4) being provided with a plurality of air outlets (41); A trench fan (5), the trench fan (5) being fixed to the outside of the wall of the pig house (2), and the trench fan (5) being used to extract air from the manure trench (21); The air supply device (1) comprises: A housing (11), wherein a positive pressure fan (12) and an air filter (13) are arranged in the housing (11), wherein the positive pressure fan (12) is connected to the preheating tube (3) via a hose (14), and the air filter (13) is arranged on a side of the positive pressure fan (12) away from the preheating tube (3), and the air filter (13) is used to filter the air entering the housing (11); A multi-layer protective net (15), the multi-layer protective net (15) is connected to the shell (11), the multi-layer protective net (15) is arranged on a side of the shell (11) away from the hose (14), and the multi-layer protective net (15) is used to block debris outside the shell (11).

2. The ventilation system for a pig house according to claim 1, characterized in that: The ventilation system for the pig house also includes an air exchange fan (6), which is fixed on the outside of the wall of the pig house (2). The air outside the pig house enters the pig house (2) through the ventilation opening (22) of the pig house (2). The air exchange fan (6) is used to exchange air with the air entering the pig house (2).

3. The ventilation system for a pig house according to claim 2, characterized in that: The multi-layer protection net (15) is formed by stacking three protection nets, and the mesh sizes of the three protection nets are all different.

4. The ventilation system for a pig house according to claim 3, characterized in that: The air supply device (1) further comprises a rain cover (16), wherein the rain cover (16) is connected to the housing (11), and the rain cover (16) is arranged on a side of the multi-layer protection net (15) away from the air filter (13).

5. The ventilation system for a pig house according to claim 4, characterized in that: The air supply device (1) and the trench fan (5) are respectively located on two opposite sides of the pig house (2).

6. The ventilation system for a pig house according to claim 5, characterized in that: The ventilation opening (22) and the air exchange fan (6) are respectively located on two opposite sides of the pig house (2).

7. The ventilation system for a pig house according to claim 6, characterized in that: The trench fan (5) and the air exchange fan (6) are both arranged on the same side wall of the pig house (2).

8. The ventilation system for a pig house according to claim 1, characterized in that: The air inlet pipe (4) is arranged above the walkway (23) in the pig house (2), and the air inlet pipe (4) is arranged parallel to the walkway (23).

9. The ventilation system for a pig house according to claim 8, characterized in that: A plurality of the air outlets (41) are arranged at intervals along the extension direction of the air inlet pipe (4), and the interval distance between two adjacent air outlets (41) is the same.

10. The ventilation system for a pig house according to claim 2, characterized in that: The ventilation system for the pig house also includes a controller, which controls the opening and closing of the positive pressure fan (12), the trench fan (5) and the air exchange fan (6) respectively. A temperature sensor is arranged on the wall of the pig house (2), and the temperature sensor is used to detect the temperature outside the house. The controller is connected to the temperature sensor signal.

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