Low-carbon capacity cowshed

Abstract

The cowshed comprises an enclosure, a slope top is arranged on the enclosure, a carbon collecting groove is formed in the lower portion in the enclosure, a carbon collecting plate is arranged above the carbon collecting groove, an air inlet hole is formed in the carbon collecting plate, the carbon collecting groove is connected with a carbon collecting well, the carbon collecting well is connected with a first induced draft pipe, and a first induced draft fan is installed on the first induced draft pipe. A fresh air pipe is connected to the middle of the enclosure and connected with an air supply system. A ceiling plate is arranged above the fresh air pipe in the enclosure, and air outlet holes are formed in the wave crest of the ceiling plate; the top of the slope top is connected with a spraying well through an alkane collecting air pipe, a spraying device is arranged in the spraying well, and the bottom of the spraying well is connected with an ammonia water well through a drain pipe; a methane well is connected to the position, located above the spraying device, in the spraying well through an exhaust pipe, the methane well is connected with a second air inducing pipe, and a second induced draft fan is installed on the second air inducing pipe. According to the utility model, the traditional large households destroying the environment are changed into environment-friendly high-efficiency industrial cattle farms, and the cattle farms become four-production farms for producing milk, meat, fuel and chemical fertilizer.

Description

Technical Field

[0001] The utility model relates to the technical field of animal husbandry buildings, in particular to a low-carbon production capacity cattle shed. Background Art

[0002] With the continuous improvement of living standards, the demand for meat, eggs and milk continues to increase, and animal husbandry continues to expand and develop.

[0003] Data shows that each cow releases approximately 300-500L of methane and 500-800L of carbon dioxide every day, with an annual carbon equivalent of more than 4 tons. Ruminants account for about 18% of the world's total carbon emissions, of which cattle farms contribute 61%.

[0004] The methane emitted by cows can be collected and used as high-quality energy fuel. Therefore, collecting the methane emitted by cows can both reduce carbon emissions and obtain bioenergy.

[0005] Chinese utility model patent CN218774543U discloses a comprehensive waste gas recovery and treatment system for livestock breeding farms, including cages, negative pressure gas collection devices, waste gas comprehensive treatment workshops, and related air separation devices. However, the treatment system of this patent has problems such as large air volume and low concentration collection and separation processing volume, high energy consumption, etc., which makes it difficult to promote it in existing cattle houses.

[0006] Therefore, it is necessary to develop a new type of cowshed for low-carbon treatment of cowshed exhaust gas. Utility Model Content

[0007] The technical problem to be solved by the utility model is: to overcome the shortcomings of the existing technology and provide a low-carbon production capacity cattle shed, so that the traditional large-scale cattle farm that damages the environment can be transformed into an efficient industrial cattle farm that is beneficial to the environment, and become a quadruple production farm that produces milk, meat, fuel and fertilizer.

[0008] The technical solution of the utility model is:

[0009] A low-carbon production capacity cattle shed comprises an enclosure, wherein a sloping roof is arranged on the enclosure, a plurality of carbon collecting grooves are arranged at the lower part of the enclosure, a carbon collecting plate is arranged above the carbon collecting grooves, an air inlet is arranged on the carbon collecting plate, the carbon collecting grooves are connected to a carbon collecting well through a pipeline, the carbon collecting well is connected to an induced draft pipe one, and an induced draft fan one is installed on the induced draft pipe one; a plurality of fresh air ducts are connected to the middle part of the enclosure, and the fresh air ducts are connected to an air supply system; a wavy ceiling board is arranged above the fresh air duct in the enclosure, and air outlet holes are arranged at the wave crests on the ceiling board; a spray well is connected to the top of the sloping roof through an alkane collecting air duct, a spray device is arranged above the air outlet of the alkane collecting air duct in the spray well, water mist is sprayed into the spray well, the bottom of the spray well is connected to an ammonia well through a drainage pipe, and a water pump is installed on the drainage pipe; a methane well is connected to the spray well through an exhaust pipe above the spray device, the methane well is connected to an induced draft pipe two, and an induced draft fan two is installed on the induced draft pipe two.

[0010] Preferably, a demisting filler is provided in the spray well between the spray device and the exhaust pipe.

[0011] Preferably, the demisting filler is a metal wire ball or a multi-layer fabric.

[0012] Preferably, the air duct extends into the lower part of the carbon collection well.

[0013] Preferably, the carbon collection well is connected to a drain pipe 1, and a drain valve 1 and a carbon dioxide detector are installed on the drain pipe 1.

[0014] Preferably, the methane well is connected to a second drain pipe, on which a second drain valve and a methane detector are installed.

[0015] Preferably, the second drain pipe extends into the lower part of the methane well.

[0016] Preferably, the lower part of the spray well is connected to the drain pipe 2 through the drain pipe 3.

[0017] Preferably, a wind turbine is installed on the top of the slope.

[0018] Preferably, a solar photovoltaic panel is installed on the top of the slope.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model reasonably separates and collects the gases according to the physical and chemical characteristics of the chemical gases metabolized by ruminants, effectively controls the ambient temperature and air quality of the cowshed, can be used to transform the original cowshed, or to build a new cowshed, thus saving land, and turning the traditional large-scale cattle farms that damage the environment into efficient industrial cattle farms that are beneficial to the environment, and become quadruple-production farms that produce milk, meat, fuel, and fertilizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of a low-carbon production capacity cattle shed of the utility model.

[0023] Figure 2 It is a structural schematic diagram of the carbon collecting groove and the carbon collecting plate of the utility model.

[0024] Figure 3 It is a structural schematic diagram of the spray well of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the ceiling board of the utility model.

[0026] In the figure, 1, enclosure; 2, slope top; 3, carbon collection ditch; 4, carbon collection plate; 5, carbon collection well; 501, induced draft duct one; 502, induced draft fan one; 503, exhaust pipe one; 504, exhaust valve one; 505, carbon dioxide detector; 601, fresh air duct; 602, air supply system; 7, ceiling board; 8, alkane collection duct; 9, spray well; 901, spray device; 902, demisting filler; 903, exhaust pipe three; 904, drain pipe; 905, exhaust pipe; 906, ammonia tank; 10, ammonia well; 11, water pump; 12, methane well; 1201, induced draft duct two; 1202, induced draft fan two; 1203, exhaust pipe two; 1204, exhaust valve two; 1205, methane detector; 1301, wind turbine; 1302, solar photovoltaic panel. DETAILED DESCRIPTION

[0027] Example 1

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention.

[0029] like Figure 1 As shown, the low-carbon production capacity cattle shed of the utility model includes a fence 1, and a slope roof 2 is arranged on the fence 1. The fence 1 and the slope roof 2 can be assembled steel structure buildings. For example, the fence 1 and the slope roof 2 can be made of color steel composite panels or inorganic insulation composite panels, and the windows are hollow LOE glass broken bridge windows. The cattle shed is a non-open building with good thermal insulation performance. The size of the cattle shed can be designed to be 300m×24m×8m in length, width and height, covering an area of ​​7200m 2 , raising 1800 cattle, each cattle is 4m 2 The cowshed of the utility model can be a newly built building, or can be renovated on the basis of an existing cowshed.

[0030] like Figure 1-2As shown, a plurality of strip-shaped carbon collecting grooves 3 are arranged on the floor of the enclosure 1, a carbon collecting plate 4 is arranged above the carbon collecting grooves 3, an air inlet is arranged on the carbon collecting plate 4, the carbon collecting grooves 3 are connected to a plurality of parallel carbon collecting wells 5 through pipelines, the carbon collecting wells 5 are connected to an induced draft pipe 501, and an induced draft fan 502 is installed on the induced draft pipe 501. Among them, the carbon collecting grooves 3 occupy 20-50% of the total area of ​​the floor; the carbon collecting plate 4 can be a cement board, a wooden board, a plastic board or a metal steel board, and the specifications of the carbon collecting plate 4 are determined according to the design width of the carbon collecting grooves 3, covering the carbon collecting grooves 3, and can be designed to be 500-3000mm×300-2000mm×10-150mm in length, width and thickness, with a perforation rate of 10-25% and an aperture of 2-20mm. The induced draft fan 502 can be a centrifugal fan or a Roots fan, and the air volume can be selected according to the design requirements, such as 500-10000m 3 / min, the wind pressure can be 1000-7000Pa.

[0031] like Figure 1 As shown, a plurality of fresh air ducts 601 are connected to the middle of the enclosure 1, and the fresh air ducts 601 are connected to an air supply system 602, and a plurality of air outlets are distributed on the fresh air ducts 601. The air supply system 602 supplies fresh fresh air to the cowshed, and the ambient fresh air can enter the cowshed after being temperature-controlled by the air-conditioning fresh air fan, so that the fresh air temperature is suitable, ensuring that the cows breathe healthy air.

[0032] like Figure 1 , 4 As shown, a corrugated ceiling board 7 is fixed above the fresh air duct 601 in the enclosure 1 through a ceiling keel, and air outlet holes are arranged at the crests of the ceiling board 7. The ceiling board 7 is a metal corrugated board, such as a 0.5-1mm thick color steel corrugated board, the crest height of the ceiling board 7 is 100-300mm, and the opening rate is about 25%.

[0033] In addition, if Figure 1 , 3 As shown, the top of the slope top 2 is connected to a plurality of parallel spray wells 9 through the alkane collecting air duct 8, and a spray device 901 is arranged above the air outlet of the alkane collecting air duct 8 in the spray well 9 to spray water mist into the spray well 9. The spray device 901 can be a pressure sprayer, an electronic sprayer or an ultrasonic sprayer, and is a low-flow device with a spray particle size of 3-10 μm. The nozzle density of the spray device 901 in the spray well 9 can be designed to be 1 / m 2 The spray flow rate is 2-5kg / h. The nozzle can be made of SUS304 stainless steel or nylon 66 and silicon carbide ceramic nozzle. The cross-sectional area of ​​a single spray well 9 cannot be too large, otherwise it will be inconvenient to install the spray device 901. The cross-sectional area is 3-30m 2 In between is appropriate.

[0034] like Figure 1As shown, the bottom of the spray well 9 is connected to the ammonia well 10 through a drainage pipe 904, and a water pump 11 is installed on the drainage pipe 904; the spray well 9 is located above the spray device 901 and connected to the methane well 12 through an exhaust pipe 905, and the methane well 12 is connected to the second induced draft pipe 1201, and the second induced draft fan 1202 is installed on the second induced draft pipe 1201. The methane well 12 is not limited by the spray device 901 and can be designed with any specifications as needed; because methane is an explosive and flammable gas, the second induced draft fan 1202 must use a centrifugal fan or a Roots fan with an explosion-proof motor, and the air volume can be selected according to design needs, such as 500-10000m 3 / min, the wind pressure can be 1000-7000Pa.

[0035] Working principle:

[0036] When ruminants digest food, a large amount of methane and carbon dioxide waste gases are produced in the rumen due to the digestion of nutrients in plant fiber by ancient methanogens. These gases are discharged through the mouth through burping, causing methane and carbon dioxide to accumulate in the cowshed. In addition, ammonia and other gases are produced in cow urine and feces. These gases not only seriously affect the health of cows but also cause fires.

[0037] It is known that the density of CH4 is 0.717g / L, which is insoluble in water; the density of NH3 is 0.771g / L, which is soluble in water; the density of CO2 is 1.977g / L, and the density of air is 1.29g / L. Since the density of carbon dioxide gas is greater than that of air, it will be deposited in the lower part of the cowshed; while the density of methane and ammonia is similar, both less than that of air, so they will gather in the upper part of the cowshed; the density of air is in the middle, so the fresh air duct 601 of the utility model is designed in the middle of the enclosure 1 to ensure healthy fresh air supply, which is beneficial to the health of cattle.

[0038] According to the characteristics of the above substances, the cowshed of the utility model can be used to effectively collect and separate gases. According to the different densities of the metabolic gases in the cowshed, the natural separation of gases can be achieved, and then according to the amount of metabolic waste gas in the cowshed and the setting of the demand for fresh air for breathing, the induced draft fan 1 502 of the carbon collection well 5 and the induced draft fan 2 1202 of the methane well 12 are started, so that the carbon collection well 5 and the spray well 9 are subjected to negative pressure, and the high-concentration carbon dioxide in the lower part of the cowshed and the methane and ammonia in the upper part are absorbed respectively through the connected methane collection air duct 8 and the carbon collection ditch 3.

[0039] The utility model can generate gas aggregation according to the different densities of various gases, thereby obtaining captured gas and exhausting air to achieve the purpose of gas purification. Figure 1-2As shown, carbon dioxide can automatically enter the carbon collecting groove 3 from the lower space in the cowshed through the air inlet on the carbon collecting plate 4, and finally collect in the carbon collecting well 5; the upper part of the carbon collecting well 5 is connected to the exhaust pipe 503, and the exhaust pipe 503 is installed with an exhaust valve 504 and a carbon dioxide detector 505. As the carbon dioxide in the carbon collecting well 5 continues to settle, the air with a lower density in the upper part of the carbon collecting well 5 will be gradually "squeezed" out through the exhaust pipe 503, thereby achieving the purpose of purifying carbon dioxide. At the same time, as the carbon dioxide gas in the carbon collecting well 5 gradually increases, when the carbon dioxide detector 505 detects that the concentration of carbon dioxide in the discharged air reaches a preset value (such as 500-1000PPM), the exhaust valve 504 can be closed to stop discharging air to ensure that the concentration of carbon dioxide in the discharged air is harmless to the environment. The induced draft pipe 501 extends into the lower part of the carbon collection well 5, and the induced draft fan 502 can be continuously turned on or intermittently turned on. When the induced draft fan 502 is turned on intermittently, when the carbon dioxide detector 505 detects that the carbon dioxide concentration in the air reaches a preset value, the induced draft fan 502 is started, and the carbon dioxide in the carbon collection well 5 is extracted from the bottom to the outside, thereby ensuring the purity of the carbon dioxide. The extracted carbon dioxide can be transported to the plant factory of the facility agriculture through a pipeline, used as gas fertilizer, and increase the yield of carbohydrates through photosynthesis; it can also be transported to a compressor, pressed into a gas tank, or compressed and liquefied in a low temperature environment, and used as welding shielding gas or oil field flooding, etc.

[0040] At the same time, if Figure 1 , 4 As shown, methane and ammonia float up in the cowshed, gather in the triangular space formed by the wave crest of the ceiling board 7, and "squeeze" the air with higher density downward, removing the air in the methane and ammonia, and achieving the purification effect of methane and ammonia. Methane and ammonia finally enter the space of the slope top 2 through the air outlet on the ceiling board 7, and then enter the spray well 9 through the methane collecting air duct 8. Then the ammonia in the mixed gas combines with the droplets sprayed by the spray device 901 to form ammonia water, and finally falls into the ammonia water pool 906 at the bottom of the spray well 9, and then is pumped into the ammonia water well 10 by the water pump 11 for collection. The concentration of this part of ammonia water is about 5wt.%, which is low-concentration ammonia water, mainly used as a neutralizer in fertilizer or textile fields.

[0041] like Figure 1As shown, since methane is stable and insoluble in water, it rises and enters the methane well 12 through the exhaust pipe 905 and is collected. The methane well 12 is connected to the drain pipe 1203. Since the density of methane is less than that of air, the drain pipe 1203 extends to the lower part of the methane well 12. The drain valve 1204 and the methane detector 1205 are installed on the drain pipe 1203. The lower part of the spray well 9 is connected to the drain pipe 1203 through the drain pipe 903. As the amount of methane gas in the methane well 12 gradually increases, the air with higher density above is gradually discharged through the exhaust pipe 1203. When the methane detector 1205 detects that the methane concentration in the discharged air reaches a preset value (such as 500-1000PPM), the exhaust valve 1204 is closed, the air discharge is stopped and the induced draft fan 1202 is started. At this time, the methane in the methane well 12 is pumped out and can enter the compressor to become liquefied methane gas, or it can be pumped into the fuel system of the methane equipment (such as a gas boiler) for direct combustion.

[0042] After the methane and ammonia mixed gas passes through the spray device 901, the rising methane gas will carry some ammonia droplets. Figure 1 , 3 As shown, in order to separate the ammonia droplets from the methane gas, a demisting filler 902 can be provided between the spray device 901 and the exhaust pipe 905 in the spray well 9. The demisting filler 902 can be a SUS304, 316 stainless steel wire mass, such as a φ0.2 mm stainless steel 304 wire mass with a density of 300 kg / m 3 , or it can be a multi-layer fabric. The demisting filler 902 is an important device for separating methane and ammonia droplets. When the methane gas carries ammonia droplets through the demisting filler 902, the ammonia droplets will be adsorbed on the demisting filler 902. When these ammonia droplets gather to a certain mass, they will fall into the ammonia pool 906 at the bottom of the spray well 9 under the action of gravity, while the methane gas can smoothly pass through the demisting filler 902 and enter the methane well 12.

[0043] In summary, the collection routes of various gases in the cowshed of the utility model are as follows:

[0044] CO2—lower space of cowshed—carbon collecting plate 4—carbon collecting ditch 3—carbon collecting well 5—induced draft fan—502—carbon using equipment or compressor;

[0045] CH4+NH3—ceiling plate 7—upper space of cowshed—methane collecting air duct 8—spray well 9—CH4 rising—defogger filler 902—methane well 12—induced draft fan 2 1202—compressor or fuel system;

[0046] NH3—ammonia pool 906—ammonia well 10—fertilizer facility or textile neutralizer.

[0047] The low-carbon production capacity cowshed of the utility model can transform a traditional cattle farm into an environmentally friendly and multi-profitable product farm that can not only produce milk and meat but also produce fuel, gas fertilizer and liquid fertilizer.

[0048] Example 2

[0049] On the basis of Example 1, Figure 1 As shown, a wind turbine 1301 and a solar photovoltaic panel 1302 are installed on the top of the slope 2, and the wind turbine 1301 and the solar photovoltaic panel 1302 are connected to a power storage device (such as a lithium iron phosphate battery). The power used by the pump, valve, induced draft fan, etc. of the utility model all comes from the power supplied by the wind turbine 1301 and the solar photovoltaic panel 1302 through the power storage device. In addition, the power storage device can be designed to have a power storage power of 72 hours, that is, under the working conditions of three days of rain, no wind, and no light, it can meet the requirement of not affecting the operation of the cowshed.

[0050] Although the present invention is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person skilled in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. Low-carbon production capacity cattle house, characterized by: The invention comprises an enclosure (1), wherein a sloping roof (2) is arranged on the enclosure (1), a plurality of carbon collecting grooves (3) are arranged at the lower part of the enclosure (1), a carbon collecting plate (4) is arranged above the carbon collecting grooves (3), an air inlet hole is arranged on the carbon collecting plate (4), the carbon collecting grooves (3) are connected to a carbon collecting well (5) through a pipeline, the carbon collecting well (5) is connected to an air induced draft pipe (501), and an air induced draft fan (502) is installed on the air induced draft pipe (501); a plurality of fresh air pipes (601) are connected to the middle part of the enclosure (1), and the fresh air pipes (601) are connected to an air supply system (602); a wavy ceiling board (7) is arranged above the fresh air pipes (601) in the enclosure (1), and the ceiling board (7) An air outlet is provided at the wave crest on the top of the slope top (2); the top of the slope top (2) is connected to a spray well (9) through an alkane collecting air duct (8); a spray device (901) is provided in the spray well (9) above the air outlet of the alkane collecting air duct (8); water mist is sprayed into the spray well (9); the bottom of the spray well (9) is connected to an ammonia well (10) through a drainage pipe (904); a water pump (11) is installed on the drainage pipe (904); a methane well (12) is connected to the spray well (9) above the spray device (901) through an exhaust pipe (905); the methane well (12) is connected to a second induced draft pipe (1201); and a second induced draft fan (1202) is installed on the second induced draft pipe (1201).

2. The low-carbon production capacity cattle house according to claim 1, characterized in that: A demisting filler (902) is provided in the spray well (9) between the spray device (901) and the exhaust pipe (905).

3. The low-carbon production capacity cattle house according to claim 2, characterized in that: The demisting filler (902) is a metal wire ball or a multi-layer fabric.

4. The low-carbon production capacity cattle house according to claim 1, characterized in that: The air duct 1 (501) extends into the lower part of the carbon collection well (5).

5. The low-carbon production capacity cattle house according to claim 1, characterized in that: The carbon collection well (5) is connected to an exhaust pipe (503), and an exhaust valve (504) and a carbon dioxide detector (505) are installed on the exhaust pipe (503).

6. The low-carbon production capacity cattle house according to claim 1, characterized in that: The methane well (12) is connected to a second drain pipe (1203), and a second drain valve (1204) and a methane detector (1205) are installed on the second drain pipe (1203).

7. The low-carbon production capacity cattle house according to claim 6, characterized in that: The second drain pipe (1203) extends into the lower part of the methane well (12).

8. The low-carbon production capacity cattle house according to claim 7, characterized in that: The lower part of the spray well (9) is connected to the drain pipe 2 (1203) via the drain pipe 3 (903).

9. The low-carbon production capacity cattle house according to claim 1, characterized in that: A wind generator (1301) is installed on the slope top (2).

10. The low-carbon production capacity cattle house according to claim 1, characterized in that: A solar photovoltaic power generation panel (1302) is installed on the slope top (2).

Images