Positive-pressure precise ventilation system suitable for delivery pig house

Abstract

The utility model relates to a positive pressure accurate ventilation system suitable for a delivery pigsty, which comprises a pigsty body, a suspended ceiling is arranged in the pigsty body, the suspended ceiling divides the internal area of the pigsty body into an upper ventilation area and a lower breeding area, a plurality of pigsties are arranged in the breeding area, and the pigsties are arranged in the ventilation area. A plurality of ventilation openings are formed in the suspended ceiling, adjusting devices used for adjusting the opening degrees of the ventilation openings are arranged in the ventilation openings, the ventilation openings are located above the corresponding pigsties, and the ventilation openings communicate with the ventilation area and the breeding area; a plurality of positive pressure fans are arranged on the side wall of the pig house body, and air outlets of the positive pressure fans are communicated with the ventilation area. According to the utility model, a ventilation mode of positive-pressure air inlet of the ventilation opening and the nasal tube and exhaust of the exhaust tube is adopted, so that the indoor air quality is kept at a better level.

Description

Technical Field

[0001] The utility model relates to the technical field of pig farming, and in particular relates to a positive pressure precision ventilation system suitable for a farrowing pig house. Background Art

[0002] At present, my country's animal husbandry industry is developing rapidly in scale and concentration. The pig house ventilation system in the pig farming industry has become one of the important factors to measure the current pig breeding level, which directly affects the healthy growth of pigs. Appropriate ventilation system design can meet the growth of pigs, improve the air quality of pig houses, and adjust the temperature and humidity of pig houses. At present, the industry simulates the thermal environment of pig houses and analyzes the thermal environment conditions in pig houses based on the simulation results. It mainly focuses on ventilation mode and ventilation uniformity. There is a lack of research on the impact of pig heat dissipation and dehumidification on the environment and the external environment control of pig houses. The correct computer pig house model is the premise of ventilation simulation analysis, and it is also necessary to consider the heat and dehumidification of pigs and the impact of various complex environments in pig houses on simulation analysis.

[0003] At present, after the pig house ventilation system is designed and established, it is directly applied to various ventilation model analyses without verification. It only performs pig house modeling and air flow simulation analysis in a general way, but fails to perform specific modeling and simulation according to the specific pig house environment and breeding conditions, resulting in differences between the results and the actual breeding process. In addition, the existing pig house ventilation system has problems such as low surface wind speed and uneven temperature distribution within the pig herd's activity space, which leads to large differences in the fresh air that pigs breathe. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a positive pressure precision ventilation system suitable for farrowing pig houses in view of the above shortcomings.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A positive pressure precision ventilation system suitable for a farrowing pig house, comprising a pig house body, wherein a ceiling is arranged in the pig house body, wherein the ceiling divides the internal area of ​​the pig house body into a ventilation area above and a breeding area below, wherein a plurality of pig pens are arranged in the breeding area, wherein a plurality of vents are arranged on the ceiling, wherein an adjusting device for adjusting the opening of the vents is arranged in the vents, wherein the vents are located above corresponding pig pens, and wherein the vents communicate with the ventilation area and the breeding area;

[0007] A plurality of positive pressure fans are arranged on the side walls of the pig house body, and the air outlets of the positive pressure fans are connected to the ventilation area;

[0008] A plurality of exhaust pipes are arranged on the top of the pig house body, the exhaust pipes are arranged above the aisles between the pig pens, exhaust valves are arranged in the exhaust pipes, and the exhaust pipes are connected with the breeding area and the outside of the pig house body;

[0009] The vent and the exhaust pipe are both provided with a temperature sensor and a wind speed sensor.

[0010] Furthermore, an outer wall is arranged outside the side wall, a gap is arranged between the outer wall and the side wall, and a wet curtain is arranged on the outer wall.

[0011] Furthermore, an ear room connected to the outer wall is arranged on the outside of the pig house body, the wet curtain is located in the ear room, a filter component is arranged in the ear room, and a three-proof net is arranged on the outside of the ear room.

[0012] Furthermore, the filter assembly includes a G4 filter cotton layer, a primary filter layer and a high-efficiency filter layer.

[0013] Furthermore, a plurality of nasal tubes are arranged on the ceiling, a temperature sensor and a wind speed sensor are arranged in the nasal tubes, the nasal tubes are located above the corresponding pig pens, and the nasal tubes connect the ventilation area and the breeding area.

[0014] Furthermore, the nasal tube includes a main tube, a secondary tube and a side tube. The main tube is vertically arranged on the ceiling, the side tube is obliquely arranged at the lower side of the main tube, and the secondary tube is connected to the bottom of the main tube.

[0015] Furthermore, the side pipe and the main pipe form an angle of 45°.

[0016] Furthermore, the inner diameters of the main pipe and the side pipe are both 160 mm, and the inner diameter of the auxiliary pipe is 110-140 mm.

[0017] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0018] The utility model proposes a pig house ventilation system, which adopts the ceiling precise air supply mode. After the fresh air passes through the air filter assembly and the wet curtain, the particulate impurities in the air are filtered out, and the air is cooled. The fresh air is sent to the ventilation area through the positive pressure fan. The ventilation area has a sufficient ventilation cross section, which can ensure that the air outlets of each air outlet are uniform, so that the wind speed is reduced for the pigs.

[0019] By arranging wind speed sensors for monitoring wind speed and temperature sensors for monitoring temperature on the outside of the vents and exhaust ducts, it is convenient to adjust the opening of the vents and exhaust ducts according to the situation to adjust the ventilation volume at the corresponding position, ensure the comfort of pigs, and achieve precise ventilation;

[0020] By installing a nasal tube above the pig pen, fresh air is led to the corresponding pig pen and covers the body surface of the farrowing pigs, achieving the effect of precise cooling of the pigs.

[0021] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a plan view of an embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0024] Figure 3 It is a partial cross-sectional schematic diagram of an embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the nasal tube structure of an embodiment of the utility model;

[0026] Figure 5 It is a simulated blowing path diagram of the auxiliary pipe inner diameter 110;

[0027] Figure 6 It is a simulated blowing path diagram of the auxiliary pipe inner diameter 140.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Pig house body; 1a. Ventilation area; 1b. Breeding area; 11. Side wall; 12. Exterior wall; 2. Ceiling; 3. Pig pen; 4. Ventilation opening; 5. Positive pressure fan; 6. Exhaust pipe; 61. Discharge valve; 7. Wet curtain; 8. Ear room; 81. Filter assembly; 82. Three-proof net; 9. Nose pipe; 91. Main pipe; 92. Sub-pipe; 93. Side pipe. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise" and "counterclockwise" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] like Figure 1 and Figure 2As shown, a positive pressure precision ventilation system suitable for a farrowing pig house comprises a pig house body 1, wherein a ceiling 2 is arranged in the pig house body 1, wherein the ceiling 2 divides the internal area of ​​the pig house body 1 into an upper ventilation area 1a and a lower breeding area 1b, wherein a plurality of pig pens 3 are arranged in the breeding area 1b, and a plurality of vents 4 are arranged on the ceiling 2, wherein an adjusting device for adjusting the opening of the vents 4 is arranged in the vents 4, wherein the vents 4 are located above the corresponding pig pens 3, and wherein the vents 4 are connected with the ventilation area 1a and the breeding area 1b;

[0033] A plurality of positive pressure fans 5 are arranged on the side wall 11 of the pig house body 1, and the air outlets of the positive pressure fans 5 are connected to the ventilation area 1a;

[0034] A plurality of exhaust pipes 6 are arranged on the top of the pig house body 1. The exhaust pipes 6 are arranged above the aisle between the pig pens 3. An exhaust valve 61 is arranged in the exhaust pipes 6. The exhaust pipes 6 are connected to the breeding area 1b and the outside of the pig house body 1.

[0035] The ventilation opening 4 and the exhaust pipe 6 are both provided with a temperature sensor and a wind speed sensor.

[0036] Preferably, polyurethane spray sealing is used at the intersection of the panel gaps of the pig house body to solve the problem of poor airtightness of the pig house, which can effectively reduce the loss of air supplied by the fan and ensure that sufficient air is blown into the pig house and delivered to the pigs' bodies to achieve the purpose of cooling.

[0037] The ventilation area 1a needs to have a sufficient ventilation cross-sectional area to ensure uniformity of air flow from each vent 4 and nose tube 9. In winter, the opening of the exhaust valve 61 and the vent 4 is controlled so that most of the fresh air passes through the nose tube 9 for accurate ventilation in the house; in summer, the opening of the exhaust valve 61 is greatly opened so that fresh air passes through the nose tube 9 to form a relatively high wind speed.

[0038] As an implementation manner, an outer wall 12 is arranged outside the side wall 11 , a gap is arranged between the outer wall 12 and the side wall 11 , and a wet curtain 7 is arranged on the outer wall 12 .

[0039] like Figure 3 As shown, as an embodiment, an ear room 8 connected to the outer wall 12 is provided on the outside of the pig house body 1, the wet curtain 7 is located in the ear room 8, a filter component 81 is provided in the ear room 8, and a three-protection net 82 is provided on the outside of the ear room 8.

[0040] The filter component 81 includes a G4 filter cotton layer, a primary filter layer and a high-efficiency filter layer. The filter component 81 is used to ensure the fresh air filtration efficiency of the pig house, and can filter impurities at different levels to achieve fresh air filtration.

[0041] like Figure 2 and Figure 4 As shown, as an embodiment, a plurality of nasal tubes 9 are arranged on the ceiling 2, a temperature sensor and a wind speed sensor are arranged in the nasal tubes 9, the nasal tubes 9 are located above the corresponding pig pens 3, and the nasal tubes 9 connect the ventilation area 1a and the breeding area 1b.

[0042] The nasal tube 9 includes a main tube 91 , a secondary tube 92 and a side tube 93 . The main tube 91 is vertically arranged on the ceiling 2 , the side tube 93 is obliquely arranged at the lower side of the main tube 91 , and the secondary tube 92 is connected to the bottom of the main tube 91 .

[0043] The side pipe 93 and the main pipe 91 form an angle of 45°.

[0044] The inner diameters of the main pipe 91 and the side pipe 93 are both 160 mm, and the inner diameter of the secondary pipe 92 is 110-140 mm.

[0045] In this embodiment, the nose tube 9 with the inner diameter of the auxiliary tube 92 of 110 mm and 140 mm is simulated, and the simulation condition is that the air intake is 500m 3 / h, analyze the wind speed distribution as follows Figure 5 and Figure 6 As shown, both modes can basically cover the body surface of the farrowing pig (red frame, taking 1.6m length as an example). When the inner diameter of the auxiliary pipe 92 is 110mm, the wind speed at the pig head is 2m / s, and the wind speed at the pig back is 2.5m / s; when the inner diameter of the auxiliary pipe 92 is 140mm, the wind speed at the pig head is 2.5m / s, and the wind speed at the pig back is 1.5m / s; the local resistance is about 30Pa.

[0046] When in use, the actual temperature and actual wind speed in the breeding area 1b are monitored through the temperature sensors and wind speed sensors on the vent 4, the exhaust pipe 6 and the nasal tube 9. The actual temperature and actual wind speed can be adjusted to the target temperature and target wind speed by adjusting the opening of the vent 4 and the exhaust pipe 6. The actual ventilation volume can be changed by adjusting the wind force of the positive pressure fan 5.

[0047] The above technical solution can meet the air demand in breeding production. The entire ventilation system mode is designed, and specific ventilation simulation analysis is performed for specific farrowing pig houses and actual breeding conditions. During the simulation process, precise ventilation is performed according to the specific size of the pigs, and it can be seen that the air volume can basically cover the pigs' body surface.

[0048] The air vents and nasal tubes are used to accurately deliver air to farrowing sows, and the air volume on the pigs' bodies is evenly dispersed. The air entering the pig house can accurately contact the pigs' skin to achieve the purpose of cooling; sterile and temperature-appropriate fresh air is provided to the farrowing pig house, the ventilation in the pig house is uniform, the exhaust gas removal efficiency is high, and the ventilation dead zone area is greatly reduced.

[0049] The ventilation mode of positive pressure air intake through vents and nasal tubes, and exhaust through exhaust pipes can keep the indoor air quality at a good level. Without reducing the effective wind speed, the ventilation volume and energy consumption are reduced. The wind speed, pressure and temperature distribution in the pig house are more uniform, avoiding heat accumulation or local overcooling in traditional pig houses. It can effectively improve the thermal environment distribution in the farrowing sow house in summer and the heat stress condition of pigs.

[0050] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A positive pressure precision ventilation system suitable for farrowing pig houses, characterized in that: The invention comprises a pig house body (1), wherein a ceiling (2) is arranged in the pig house body (1), wherein the ceiling (2) divides the internal area of ​​the pig house body (1) into an upper ventilation area (1a) and a lower breeding area (1b), wherein a plurality of pig pens (3) are arranged in the breeding area (1b), wherein a plurality of ventilation openings (4) are arranged on the ceiling (2), wherein an adjusting device for adjusting the opening of the ventilation openings (4) is arranged in the ventilation openings (4), wherein the ventilation openings (4) are located above the corresponding pig pens (3), and wherein the ventilation openings (4) are connected to the ventilation area (1a) and the breeding area (1b); A plurality of positive pressure fans (5) are arranged on the side wall (11) of the pig house body (1), and the air outlets of the positive pressure fans (5) are connected to the ventilation area (1a); A plurality of exhaust pipes (6) are arranged on the top of the pig house body (1), the exhaust pipes (6) are arranged above the aisles between the pig pens (3), exhaust valves (61) are arranged in the exhaust pipes (6), and the exhaust pipes (6) are connected to the breeding area (1b) and the outside of the pig house body (1); The ventilation opening (4) and the exhaust pipe (6) are both provided with a temperature sensor and a wind speed sensor.

2. The positive pressure precision ventilation system for farrowing pig houses according to claim 1, characterized in that: An outer wall (12) is arranged outside the side wall (11), a gap is arranged between the outer wall (12) and the side wall (11), and a wet curtain (7) is arranged on the outer wall (12).

3. The positive pressure precision ventilation system for farrowing pig houses according to claim 2, characterized in that: An ear room (8) connected to an outer wall (12) is arranged on the outside of the pig house body (1), the wet curtain (7) is located in the ear room (8), a filter assembly (81) is arranged in the ear room (8), and a three-proof net (82) is arranged on the outside of the ear room (8).

4. The positive pressure precision ventilation system for farrowing pig houses according to claim 3, characterized in that: The filter assembly (81) comprises a G4 filter cotton layer, a primary filter layer and a high efficiency filter layer.

5. The positive pressure precision ventilation system for farrowing pig houses according to claim 1, characterized in that: A plurality of nasal tubes (9) are arranged on the ceiling (2), a temperature sensor and a wind speed sensor are arranged inside the nasal tubes (9), the nasal tubes (9) are located above the corresponding pig pens (3), and the nasal tubes (9) are connected to the ventilation area (1a) and the breeding area (1b).

6. The positive pressure precision ventilation system for farrowing pig houses according to claim 5, characterized in that: The nasal tube (9) comprises a main tube (91), a secondary tube (92) and a side tube (93); the main tube (91) is vertically arranged on the ceiling (2); the side tube (93) is obliquely arranged at the lower side of the main tube (91); and the secondary tube (92) is connected to the bottom of the main tube (91).

7. The positive pressure precision ventilation system for farrowing pig houses according to claim 6, characterized in that: The side pipe (93) and the main pipe (91) form an angle of 45°.

8. The positive pressure precision ventilation system for farrowing pig houses according to claim 6, characterized in that: The inner diameters of the main pipe (91) and the side pipe (93) are both 160 mm, and the inner diameter of the secondary pipe (92) is 110-140 mm.

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