A large-scale laying hen farm exhaust gas treatment equipment and treatment method

Abstract

The application discloses a large-scale egg chicken farm waste gas treatment equipment and treatment method, and belongs to the technical field of breeding waste gas treatment. The equipment comprises an exhaust mechanism and a feather removing mechanism installed on one side of a henhouse, further comprises an exhaust channel, a dust removal device, a waste gas treatment chamber, a deodorization filter element, a spraying device and a discharge cylinder. The application removes feathers while extracting waste gas in the henhouse, drives the rotation of the window leaf, drives the rotation of the rotating rod and the telescopic rod at the same time, removes feathers while closing the window leaf, ensures that the feather baffle can isolate and block feathers for a long time, improves the feather removal effect, removes dust and deodorizes the waste gas after removing feathers through the dust removal device, the deodorization filter element and the spraying device, and ensures that the waste gas discharged to the outside is green and environmentally friendly.

Description

Technical Field

[0001] This invention relates to the field of livestock waste gas treatment technology, specifically to a large-scale waste gas treatment device and treatment method for egg-laying chicken farms. Background Technology

[0002] With the development of large-scale livestock and poultry farming and the increasing public demand for environmental quality, odor pollution from large-scale livestock and poultry farms has become a public nuisance that harms the production and lives of surrounding residents. Especially in egg-laying hen farming, due to the short intestines of chickens and their poor digestive and absorptive capacity for feed, about 70% of nutrients are excreted undigested in feces. The organic matter in feces mainly includes carbohydrates and nitrogenous compounds. These organic compounds decompose under aerobic or anaerobic conditions. When carbohydrates decompose aerobically, they release heat energy, with the main products being CO2 and water; however, under anaerobic conditions, their decomposition products are mainly methanol, organic acids, and various alcohols. These substances all have a slightly foul and sour odor, causing unpleasant sensations. Nitrogenous compounds decompose into amino acids under the action of enzymes, which then decompose into nitrates under aerobic conditions; under anaerobic conditions, they decompose into malodorous gases such as ammonia, sulfuric acid, vinyl alcohol, dimethyl sulfide, hydrogen sulfide, methylamine, and trimethylamine. These gases have characteristic odors such as the smell of rotting onions, putrid eggs, and fish. In poultry farms, when manure contains excessive moisture or is compressed and lacks fresh air, a localized anaerobic environment is created, producing and releasing foul-smelling gases. Simultaneously, the large amount of manure and feathers in chicken farms leads to high dust levels inside the sheds. Furthermore, the increasing scale and intensification of egg-laying chicken farming, along with rising stocking densities, has resulted in deteriorating air quality and exacerbated environmental problems in poultry farms.

[0003] Currently, to reduce and control odors in chicken farms, large-scale chicken farms often employ a comprehensive strategy of source reduction and process control. Source reduction involves precisely adjusting the crude protein level and digestible amino acid balance in the diet according to the chicken's growth stage, reducing excessive nitrogen and phosphorus intake and excretion. Regarding process control, modern large-scale chicken farms primarily use conveyor belts for manure removal. The short exposure time of manure on the conveyor belt allows for rapid collection to enclosed spaces or treatment areas, significantly reducing the generation of ammonia and dust within the coop. Additionally, chicken farms often use highly absorbent bedding material and turn it over regularly, and add deodorizers, microbial agents, or ferrous sulfate to suppress ammonia production. In short, large-scale chicken farms currently focus primarily on internal environmental control, with little attention paid to addressing external odor emissions.

[0004] Given that the foul odors and dust emitted from chicken farms not only severely pollute the air, soil, and water, but also serve as a significant route for the transmission of infectious diseases, parasitic diseases, and zoonotic diseases in livestock, greatly impacting human quality of life and health, the air pollution problem in livestock and poultry farms urgently needs to be addressed. Currently, most chicken farm exhaust gas treatment equipment on the market primarily treats dust and odors inside the chicken coop, but rarely addresses the emitted gases, leading to pollution of the surrounding environment. Summary of the Invention

[0005] The purpose of this invention is to provide a large-scale waste gas treatment device and method for egg-laying chicken farms to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a large-scale egg farm exhaust gas treatment device, including an exhaust mechanism and a feather removal mechanism installed on one side of the chicken house, and also including an exhaust duct, a dust removal device, an exhaust gas treatment chamber, a deodorizing filter, a spray device and an exhaust pipe;

[0007] The exhaust duct is located at the side of the chicken house, the dust removal device is located inside the exhaust duct, the exhaust gas treatment chamber is located at the end of the exhaust duct away from the chicken house, the deodorizing filter is located inside the exhaust gas treatment chamber, there are two sets of spray devices, which are respectively located inside the exhaust duct and the exhaust gas treatment chamber, and respectively located on the side of the dust removal device away from the chicken house and above the deodorizing filter. The discharge cylinder is located at the top of the exhaust gas treatment chamber, the bottom of the exhaust gas treatment chamber on the side away from the exhaust duct is provided with a sewage pipe, the bottom of the exhaust gas treatment chamber is provided with a liquid collection tank, and the bottom of the discharge cylinder is provided with an exhaust fan.

[0008] The exhaust mechanism includes an exhaust box and an exhaust fan. There are several exhaust boxes, which are evenly arranged on the side wall of the chicken house. The exhaust duct is connected to the outside of several exhaust boxes, and the exhaust fan is located inside the exhaust box.

[0009] The feather removal mechanism includes a feather baffle, which is located on the side of the exhaust box away from the exhaust duct and inside the chicken coop.

[0010] More preferably, the exhaust mechanism includes a fan cylinder, a fixed frame, window blades, and a rotating shaft. The fan cylinder is fixedly installed inside the exhaust box, and the exhaust fan is located inside the fan cylinder. The fixed frame is fixedly installed at one end of the exhaust box located outside the chicken coop. There are several window blades, which are evenly arranged inside the fixed frame. There are several rotating shafts, which are evenly arranged inside the fixed frame and are fixedly connected to one end of each of the window blades.

[0011] More preferably, the exhaust mechanism includes an outer cover, an extension shaft, a timing pulley, and a timing belt. Two outer covers are provided on each exhaust box and are fixedly installed on the left and right sides of the exhaust box, respectively. There are two sets of extension shafts, which are fixedly installed at both ends of the two uppermost rotating shafts, respectively. The timing pulley is fixedly sleeved on the end of each extension shaft located outside the outer cover, and the timing belt is sleeved on the timing pulley.

[0012] More preferably, the exhaust mechanism includes a first gear, a translation rod, a support frame, a first rack, and a first trapezoidal groove. The first gear is fixedly sleeved on one end of the rotating shaft located inside the outer cover. The translation rod is movably disposed on the side wall of the fixed frame and the exhaust box, and is located below the first gear. The support frame is fixedly sleeved on the side of the translation rod away from the chicken coop, and is slidably connected to the side wall of the exhaust box and the fixed frame. The first rack is fixedly installed on the top of the support frame, and is located below the first gear, and is movably connected to the first gear through meshing. The first trapezoidal groove is fixedly installed on the end of the translation rod close to the chicken coop, and is slidably connected to the side wall of the exhaust box.

[0013] More preferably, the feather removal mechanism includes a connecting plate, a rotating rod, a telescopic rod, a limiting seat, a sliding rod, and a first spring. The connecting plate is fixedly installed on the left and right side walls of the feather baffle. There are two sets of rotating rods, which are evenly and alternately arranged on the side of the feather baffle away from the exhaust box. The ends of the two sets of rotating rods away from the middle of the feather baffle are respectively located on the side of the connecting plate away from the exhaust channel. The telescopic rod is movably installed inside the end of the rotating rod away from the connecting plate. The limiting seat is fixedly installed at the four corners of the end of the rotating rod away from the connecting plate. The sliding rod is fixedly installed at the end of the telescopic rod located on the rotating rod and inserted into the rotating rod. The first spring is movably sleeved on the sliding rod.

[0014] More preferably, the feather removal mechanism includes a top head, a connecting shaft, a second gear, a lifting frame, and a fixed shaft. The top head is fixedly installed on the end of the telescopic rod away from the rotating rod and is spherical. The scraper is fixedly installed on the rotating rod and the telescopic rod respectively, and is located on the side of the rotating rod and the telescopic rod near the feather baffle. A movable groove is opened in the middle of the side of the rotating rod near the feather baffle, and a scraper on the telescopic rod is movably installed in the movable groove. The scraper is slidably connected to the feather baffle. The connecting shaft is inserted into the connecting plate and is fixedly connected to the end of the rotating rod away from the middle of the feather baffle. The second gear is fixedly sleeved on the connecting shaft and is located on the side of the connecting plate near the exhaust duct. The side wall of the lifting frame is movably sleeved on the second gear and is slidably connected to the connecting plate. The side wall perpendicular to the second gear is slidably connected to the exhaust box. The fixed shaft is fixedly installed on the side wall of the exhaust box, and the side wall of the lifting frame is movably sleeved on the fixed shaft.

[0015] More preferably, the feather removal mechanism includes a second trapezoidal groove, a support rod, a second spring, a second rack, and a synchronization plate. The second trapezoidal groove is fixedly installed at the bottom end of the lifting frame. The top end of the support rod is fixedly connected to the inner top end of the lifting frame, and the bottom end of the support rod is fixedly connected to the inner bottom end of the second trapezoidal groove. The support rod passes through the middle of the fixed shaft. The second spring is movably sleeved on the support rod and located between the fixed shaft and the second trapezoidal groove. The second rack is fixedly installed on the side wall of the lifting frame and located on the side of the second gear away from the exhaust box, and is movably connected to the second gear through meshing. The synchronization plate is fixedly installed at the bottom end of the lifting frame.

[0016] This invention also provides another technical solution: a method for treating exhaust gas from large-scale layer chicken farms, comprising the following steps:

[0017] S1. The internal exhaust fan is turned on according to different temperatures and breeding densities. At the same time, the exhaust fan in the discharge pipe is turned on. The spray device is started at the same time as the exhaust fan is turned on. The exhaust fan draws the exhaust gas in the chicken house and discharges it into the exhaust duct. The exhaust gas passes through the dust removal device to remove dust, and then passes through the spray device to chemically deodorize the exhaust gas. The exhaust gas then enters the exhaust gas treatment chamber. In the exhaust gas treatment chamber, the treated exhaust gas passes through the deodorizing filter for physical deodorization, and then passes through the spray device again for deodorization. Finally, the treated exhaust gas is discharged from the discharge pipe through the exhaust fan in the discharge pipe.

[0018] S2. During the process of extracting exhaust gas from the chicken house, the exhaust gas is prone to carrying feathers because a large number of laying hens are raised in the chicken house. The feathers in the exhaust gas are isolated by the feather baffle. When too many feathers accumulate, they will block the feather baffle. When the feather baffle is blocked, the exhaust fan is stopped first. Then, the extension shaft is driven to rotate by an external motor, which in turn drives the rotating shaft to rotate. The rotating shaft drives the window leaf to rotate 90 degrees, so that the air outlet of the exhaust box is sealed by the window leaf.

[0019] S3. While the window leaf rotates, the first gear drives the first rack to move, the first rack drives the translation rod to move, the translation rod drives the first trapezoidal groove to move, and the first trapezoidal groove opens the second trapezoidal groove, causing the lifting frame to drive the second rack to rise. When the second rack rises, it drives the second gear to rotate. At this time, the connecting shaft drives the rotating rod to rotate. When the rotating rod rotates, it drives the telescopic rod to rotate at the same time, so that the scraper removes the feathers attached to the surface of the feather baffle. When the telescopic rod contacts the rotating rod below, it slides with it through the top head and pushes the telescopic rod into the rotating rod to avoid obstruction of movement, and can also push away the feathers accumulated on the rotating rod and the telescopic rod below.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The dust reduction and deodorization device of the present invention can remove more than 95% of the feathers discharged from the chicken house and reduce the dust in the chicken house by more than 90%.

[0022] 2. The dust reduction and deodorization device of the present invention can achieve a removal rate of more than 95% for ammonia and hydrogen sulfide, a removal rate of more than 85% for dimethyl disulfide, a removal rate of more than 75% for carbon disulfide, and a removal rate of more than 80% for methyl sulfide, while saving more than 40% of energy consumption.

[0023] 3. This invention removes feathers while extracting waste gas from the chicken coop. By driving the window shutters to rotate, the rotating rod and telescopic rod can be rotated simultaneously, allowing feather cleaning to occur while the window shutters are closed. This ensures that the feather baffle can isolate and block feathers for a long time, improving the feather removal effect. Through a dust removal device, a deodorizing filter, and a spraying device, the waste gas after feather removal is treated for dust removal and deodorization, ensuring that the waste gas discharged to the outside is green and environmentally friendly. Attached Figure Description

[0024] Figure 1 A schematic diagram of the overall structure is provided for embodiments of the present invention;

[0025] Figure 2 This is a schematic diagram showing the connection between the chicken coop and the exhaust mechanism provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the exhaust duct and waste gas treatment chamber provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the exhaust mechanism provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the outer casing provided in an embodiment of the present invention;

[0029] Figure 6 Provided for embodiments of the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0030] Figure 7 Provided for embodiments of the present invention Figure 5 Enlarged structural diagram at point B;

[0031] Figure 8 This is a schematic diagram of the feather baffle structure provided in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the connection structure between the rotating rod and the telescopic rod provided in an embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the internal structure of the rotating rod provided in an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the lifting frame structure provided in an embodiment of the present invention.

[0035] In the diagram: 1. Chicken coop; 2. Exhaust duct; 3. Dust removal device; 4. Waste gas treatment chamber; 5. Deodorizing filter element; 6. Spraying device; 7. Discharge cylinder; 8. Exhaust mechanism; 801. Exhaust box; 802. Fan casing; 803. Exhaust fan; 804. Fixing frame; 805. Window slats; 806. Rotating shaft; 807. Outer cover; 808. Extension shaft; 809. Synchronous pulley; 810. Synchronous belt; 811. First gear; 812. Translation rod; 813. Support frame; 814. First rack. ; 815, First trapezoidal groove; 9, Feather removal mechanism; 901, Feather baffle; 902, Connecting plate; 903, Rotating rod; 904, Telescopic rod; 905, Limiting seat; 906, Slide rod; 907, Second spring; 908, Top head; 909, Scraper; 910, Connecting shaft; 911, Second gear; 912, Lifting frame; 913, Fixed shaft; 914, Second trapezoidal groove; 915, Support rod; 916, First spring; 917, Second rack; 918, Synchronizing plate. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1:

[0038] This embodiment describes a large-scale waste gas treatment device for egg-laying chicken farms, such as... Figures 1 to 11 As shown, it includes an exhaust mechanism 8 and a feather removal mechanism 9 installed on one side of the chicken house 1, as well as an exhaust duct 2, a dust removal device 3, an exhaust gas treatment chamber 4, a deodorizing filter 5, a spray device 6, and an exhaust pipe 7.

[0039] Exhaust duct 2 is located at the side of chicken house 1. Dust removal device 3 is located inside exhaust duct 2. Waste gas treatment chamber 4 is located at the end of exhaust duct 2 away from chicken house 1. Deodorizing filter element 5 is located inside waste gas treatment chamber 4. There are two sets of spraying devices 6, which are respectively located inside exhaust duct 2 and waste gas treatment chamber 4, and respectively located on the side of dust removal device 3 away from chicken house 1 and above deodorizing filter element 5. Discharge cylinder 7 is located at the top of waste gas treatment chamber 4. A sewage pipe is provided at the bottom of the side of waste gas treatment chamber 4 away from exhaust duct 2. A liquid collection tank is provided at the bottom of waste gas treatment chamber 4. An exhaust fan is provided at the bottom of the inside of discharge cylinder 7.

[0040] The exhaust mechanism 8 includes an exhaust box 801 and an exhaust fan 803. There are several exhaust boxes 801, which are evenly arranged on the side wall of the chicken house 1. The exhaust duct 2 is connected to the outside of several exhaust boxes 801, and the exhaust fan 803 is located inside the exhaust box 801.

[0041] In this embodiment, as Figures 4 to 7 As shown, the exhaust mechanism 8 includes a fan cylinder 802, a fixed frame 804, window blades 805, and a rotating shaft 806. The fan cylinder 802 is fixedly installed inside the exhaust box 801, and the exhaust fan 803 is located inside the fan cylinder 802. The fixed frame 804 is fixedly installed at one end of the exhaust box 801 located outside the chicken house 1. There are several window blades 805, which are evenly arranged inside the fixed frame 804. There are several rotating shafts 806, which are evenly arranged inside the fixed frame 804, and each is fixedly connected to one end of several window blades 805. The exhaust fan 803 is fixed through the fan cylinder 802, and the exhaust fan 803 draws out the exhaust gas in the chicken house 1. The rotating shaft 806 drives the window blades 805 to rotate 90 degrees, so that the air outlet of the exhaust box 801 is closed by the window blades 805.

[0042] In this embodiment, as Figures 4 to 7 As shown, the exhaust mechanism 8 includes an outer cover 807, an extension shaft 808, a synchronous pulley 809, and a synchronous belt 810. Two outer covers 807 are provided on each exhaust box 801 and are fixedly installed on the left and right sides of the exhaust box 801, respectively. There are two sets of extension shafts 808, which are fixedly installed at both ends of the two uppermost rotating shafts 806, respectively. The synchronous pulley 809 is fixedly sleeved on the end of each extension shaft 808 outside the outer cover 807, and the synchronous belt 810 is sleeved on the synchronous pulley 809. The outer cover 807 protects the moving components in the exhaust mechanism 8. By connecting an external motor to the extension shaft 808, the extension shaft 808 can be driven to rotate, thereby driving the rotating shaft 806 to rotate. The rotating shaft 806 drives the window leaf 805 to rotate 90 degrees, so that the air outlet of the exhaust box 801 is closed by the window leaf 805.

[0043] In this embodiment, as Figures 4 to 7As shown, the exhaust mechanism 8 includes a first gear 811, a translation rod 812, a support frame 813, a first rack 814, and a first trapezoidal groove 815. The first gear 811 is fixedly sleeved on one end of the rotating shaft 806 located inside the outer cover 807. The translation rod 812 is movably disposed on the side wall of the fixed frame 804 and the exhaust box 801, and is located below the first gear 811. The support frame 813 is fixedly sleeved on the side of the translation rod 812 away from the chicken coop 1, and is slidably connected to the side wall of the exhaust box 801 and the fixed frame 804. The first rack 814 is fixedly installed on the top of the support frame 813 and is located below the first gear 811. The first trapezoidal groove 815 is fixedly installed at one end of the translation rod 812 near the chicken house 1 and is slidably connected to the side wall of the exhaust box 801. The first gear 811 drives the first rack 814 to move, the first rack 814 drives the translation rod 812 to move, the translation rod 812 drives the first trapezoidal groove 815 to move, and the first trapezoidal groove 815 pushes open the second trapezoidal groove 914, so that the lifting frame 912 drives the second rack 917 to rise. By connecting the adjacent extension shafts 808, the window leaf 805 in other exhaust boxes 801 can be driven to rotate at the same time.

[0044] In other aspects, this embodiment also provides a feather removal mechanism 9 for isolating feathers in exhaust gas and cleaning up accumulated feathers, such as... Figures 7 to 11 As shown, the feather removal mechanism 9 includes a feather baffle 901, which is located on the side of the exhaust box 801 away from the exhaust duct 2 and inside the chicken house 1.

[0045] In this embodiment, as Figures 7 to 11As shown, the feather removal mechanism 9 includes a connecting plate 902, a rotating rod 903, a telescopic rod 904, a limiting seat 905, a sliding rod 906, and a first spring 907. The connecting plate 902 is fixedly installed on the left and right side walls of the feather baffle 901. There are two sets of rotating rods 903, which are evenly and alternately arranged on the side of the feather baffle 901 away from the exhaust box 801. The ends of the two sets of rotating rods 903 away from the middle of the feather baffle 901 are respectively located on the side of the connecting plate 902 away from the exhaust channel 2. The telescopic rod 904 is movably installed in the end of the rotating rod 903 away from the connecting plate 902. The limiting seat 905 is fixedly installed at the four corners of the end of the rotating rod 903 away from the connecting plate 902. At this location, the slide rod 906 is fixedly installed on one end of the telescopic rod 904 located on the rotating rod 903, and is inserted into the rotating rod 903. The first spring 907 is movably sleeved on the slide rod 906. The rotating rod 903 is driven to rotate through the connecting shaft 910. When the rotating rod 903 rotates, it drives the telescopic rod 904 to rotate at the same time, so that the scraper 909 scrapes off the feathers attached to the surface of the feather baffle 901. When the telescopic rod 904 contacts the rotating rod 903 below, it is slidably connected to it through the top head 908, and the telescopic rod 904 is pushed into the rotating rod 903 to avoid obstruction of movement, and can push the feathers accumulated on the rotating rod 903 and the telescopic rod 904 below apart.

[0046] In this embodiment, as Figures 7 to 11As shown, the feather removal mechanism 9 includes a top head 908, a connecting shaft 910, a second gear 911, a lifting frame 912, and a fixed shaft 913. The top head 908 is fixedly installed on the end of the telescopic rod 904 away from the rotating rod 903 and is spherical. Scrapers 909 are fixedly installed on the rotating rod 903 and the telescopic rod 904 respectively, and are located on the side of the rotating rod 903 and the telescopic rod 904 near the feather baffle 901. A movable groove is opened in the middle of the side of the rotating rod 903 near the feather baffle 901, and a scraper 909 on the telescopic rod 904 is movably installed in the movable groove. The scraper 909 is slidably connected to the feather baffle 901. The connecting shaft 910 is inserted into the connecting plate 902 and is fixedly connected to the end of the rotating rod 903 away from the middle of the feather baffle 901. The second gear 911 is fixedly sleeved on the connecting shaft 910 and is located on the connecting plate 902 near the feather baffle 901. On one side of the exhaust duct 2, the side wall of the lifting frame 912 is movably sleeved on the second gear 911 and slidably connected to the connecting plate 902. The side wall perpendicular to the connecting plate 902 is slidably connected to the exhaust box 801. The fixed shaft 913 is fixedly installed on the side wall of the exhaust box 801, and the side wall of the lifting frame 912 is movably sleeved on the fixed shaft 913. The first rack 814 drives the translation rod 812 to move, and the translation rod 812 drives the first trapezoidal groove 815 to move. The first trapezoidal groove 815 pushes open the second trapezoidal groove 914, so that the lifting frame 912 drives the second rack 917 to rise. When the second rack 917 rises, it drives the second gear 911 to rotate. At this time, the connecting shaft 910 drives the rotating rod 903 to rotate. When the rotating rod 903 rotates, it drives the telescopic rod 904 to rotate at the same time, so that the scraper 909 scrapes off the feathers attached to the surface of the feather baffle 901.

[0047] In this embodiment, as Figures 7 to 11 As shown, the feather removal mechanism 9 includes a second trapezoidal groove 914, a support rod 915, a second spring 916, a second rack 917, and a synchronization plate 918. The second trapezoidal groove 914 is fixedly installed at the bottom end of the lifting frame 912. The top end of the support rod 915 is fixedly connected to the inner top end of the lifting frame 912, and the bottom end of the support rod 915 is fixedly connected to the inner bottom end of the second trapezoidal groove 914. The support rod 915 passes through the middle of the fixed shaft 913. The second spring 916 is movably sleeved on the support rod 915 and is located between the fixed shaft 913 and the second trapezoidal groove 914. The second rack 917 is fixedly installed on the side wall of the lifting frame 912 and is located on the side of the second gear 911 away from the exhaust box 801, and is movably connected to the second gear 911 through meshing. The synchronization plate 918 is fixedly installed at the bottom end of the lifting frame 912. Other lifting frames 912 can be connected through the synchronization plate 918 so that the lifting frames 912 can be raised and lowered simultaneously, thereby driving other rotating rods 903 to rotate simultaneously.

[0048] This embodiment also provides a method for treating exhaust gas from large-scale layer chicken farms, including the following steps:

[0049] S1. The exhaust fan 803 is turned on according to different temperatures and breeding densities. At the same time, the exhaust fan in the discharge pipe 7 is turned on. The spray device 6 is started at the same time as the exhaust fan 803 is turned on. The exhaust fan 803 draws the exhaust gas in the chicken house 1 and discharges it into the exhaust duct 2. The exhaust gas passes through the dust removal device 3 to remove dust, and then passes through the spray device 6 to chemically deodorize the exhaust gas. The exhaust gas then enters the exhaust gas treatment chamber 4. In the exhaust gas treatment chamber 4, the treated exhaust gas passes through the deodorizing filter 5 for physical deodorization. The deodorizing filter includes biochar, deodorizing bacteria and rice bran, etc. Then it passes through the spray device 6 again for deodorization. The sprayed liquid is dilute acid, such as dilute hydrochloric acid or dilute boric acid. Then the absorbent enters the liquid collection tank. Finally, the treated exhaust gas is discharged from the discharge pipe 7 through the exhaust fan in the discharge pipe 7.

[0050] S2. During the process of extracting exhaust gas from chicken house 1, since a large number of laying hens are raised in chicken house 1, the exhaust gas is prone to carrying feathers. The feathers in the exhaust gas are isolated by the feather baffle 901. When too many feathers accumulate, they will block the feather baffle 901. When the feather baffle 901 is blocked, the exhaust fan 803 is stopped first. Then, the extension shaft 808 is driven to rotate by an external motor, which drives the rotating shaft 806 to rotate. The rotating shaft 806 drives the window leaf 805 to rotate 90 degrees, so that the air outlet of the exhaust box 801 is closed by the window leaf 805.

[0051] S3. While the window leaf 805 rotates, the first gear 811 drives the first rack 814 to move, the first rack 814 drives the translation rod 812 to move, the translation rod 812 drives the first trapezoidal groove 815 to move, and the first trapezoidal groove 815 pushes open the second trapezoidal groove 914, so that the lifting frame 912 drives the second rack 917 to rise. When the second rack 917 rises, it drives the second gear 911 to rotate. At this time, the connecting shaft 910 drives the rotating rod 903 to rotate. When the rotating rod 903 rotates, it drives the telescopic rod 904 to rotate at the same time, so that the scraper 909 scrapes off the feathers attached to the surface of the feather baffle 901. When the telescopic rod 904 contacts the rotating rod 903 below, it slides with it through the top head 908 and pushes the telescopic rod 904 into the rotating rod 903 to avoid obstruction of movement, and can push away the feathers accumulated on the rotating rod 903 and the telescopic rod 904 below.

[0052] Example 2: Dust and odor removal effect in a chicken farm with 10,000 chickens (2,500 cubic meters)

[0053] A dust reduction and deodorization effect experiment was conducted at a chicken farm in Hubei Province. The indoor space of the chicken house was 2500 cubic meters, with 10 air changes per hour. Monitoring was conducted continuously for 5 days, recording values ​​for dust, feathers, odor, and energy consumption. (Note: Traditional processes primarily use centrifugal fans. A 4-72-10C fan is required: one unit, 10kW, 10kW × 24h = 240kWh. The equipment of this invention requires one 6kW fan; the theoretical energy consumption is: 6kW × 24h = 144kWh.)

[0054]

[0055] This invention is beneficial for removing dust, feathers, and odors from egg-laying chicken farms at the Jinshui Base of the Hubei Academy of Agricultural Sciences. The dust removal rate reaches 91.2%, feather removal rate reaches 95.1%, ammonia removal rate reaches 97.91%, hydrogen sulfide removal rate reaches 97.09%, dimethyl disulfide removal rate reaches 88.37%, carbon disulfide removal rate reaches 77.00%, and dimethyl sulfide removal rate reaches 86.96%. It also contributes to energy savings, reducing energy consumption by 40.33% compared to similar equipment on the market (Note: the inlet volume for dust and odors is calculated based on 2500 cubic meters, and the outlet volume is calculated based on the effective treatment volume of the facility).

[0056] Example 3: Dust and odor removal effect in a chicken farm with 20,000 chickens (5,000 cubic meters)

[0057] A dust reduction and deodorization experiment was conducted at an egg-laying chicken farm in Hubei Province. The indoor space of the chicken house was 5000 cubic meters, with 10 air changes per hour. Monitoring was conducted continuously for 5 days, recording values ​​for dust, feathers, odor, and energy consumption. (Note: Traditional processes primarily use centrifugal fans, requiring two 4-72-10C fans, 10kW × 2 × 24h = 480kWh. The equipment of this invention requires two 6kW fans; the theoretical energy consumption is 6kW × 2 × 24h = 288kWh.)

[0058]

[0059] This invention is beneficial for removing dust, feathers, and odors in egg-laying chicken farms (10,000 chickens). The dust removal rate reaches 91.1%, feather removal rate reaches 96.6%, ammonia removal rate reaches 97.44%, hydrogen sulfide removal rate reaches 97.40%, dimethyl disulfide removal rate reaches 88.27%, carbon disulfide removal rate reaches 75.65%, and dimethyl sulfide removal rate reaches 86.76%. It also contributes to energy savings, reducing energy consumption by 40.83% compared to similar equipment on the market (Note: the inlet volume for dust and odors is calculated based on 5000 cubic meters, and the outlet volume is calculated based on the effective treatment volume of the facility).

[0060] Example 4: Dust and odor removal effect in a laying hen farm with 50,000 laying hens (12,500 cubic meters)

[0061] A dust reduction and deodorization effect test was conducted at an egg-laying chicken farm in Hubei Province. The indoor space of the chicken house was 12,500 cubic meters, with 10 air changes per hour. Monitoring was conducted continuously for 5 days, recording values ​​for dust, feathers, odor, and energy consumption. (Note: Traditional processes primarily use centrifugal fans. This requires 5 units of 4-72-10C, 4-55kW, with a theoretical energy consumption of 10kW × 24h × 5 = 1200kWh. The equipment of this invention requires 5 fans, 6kW each; the theoretical energy consumption is 6kW × 24h × 5 = 720kWh.)

[0062]

[0063] This invention is beneficial for removing dust, feathers, and odors from egg-laying chicken farms (with a stock of 50,000 chickens). The dust removal rate reaches 90.5%, feather removal rate reaches 95.9%, ammonia removal rate reaches 97.82%, hydrogen sulfide removal rate reaches 97.62%, dimethyl disulfide removal rate reaches 88.31%, carbon disulfide removal rate reaches 75.38%, and dimethyl sulfide removal rate reaches 82.61%. It also contributes to energy savings, reducing energy consumption by 40.12% compared to similar equipment on the market (Note: the inlet volume for dust and odors is calculated based on 12,500 cubic meters, and the outlet volume is calculated based on the effective treatment volume of the facility).

[0064] This invention is effective in removing dust, feathers, and odors, achieving dust removal rates of over 90%, feather removal rates of over 95%, ammonia removal rates of over 97%, and hydrogen sulfide removal rates of over 97%. It also contributes to energy savings, reducing energy consumption by over 40% compared to similar equipment on the market.

[0065] The dust reduction and deodorization device described in this invention can remove over 95% of the feathers discharged from chicken coops, over 90% of the dust, over 95% of ammonia and hydrogen sulfide, over 85% of dimethyl sulfide, over 75% of carbon disulfide, and over 80% of methyl sulfide, while saving over 40% of energy consumption.

[0066] The exhaust gas treatment equipment for egg-laying chicken farms provided by this invention can be combined with dust reduction and deodorization devices inside chicken houses on the market to remove particulate matter, dust, and odor generated by egg-laying chicken farms, which is conducive to the healthy development of the egg-laying chicken industry.

[0067] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0068] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large-scale egg-laying chicken farm exhaust gas treatment device, comprising an exhaust mechanism (8) and a feather removal mechanism (9) installed on one side of the chicken house (1), characterized in that, It also includes an exhaust duct (2), a dust removal device (3), a waste gas treatment chamber (4), a deodorizing filter element (5), a spray device (6), and an exhaust pipe (7); The exhaust duct (2) is located at the side of the chicken house (1), the dust removal device (3) is located inside the exhaust duct (2), the exhaust gas treatment chamber (4) is located at the end of the exhaust duct (2) away from the chicken house (1), the deodorizing filter (5) is located inside the exhaust gas treatment chamber (4), there are two sets of spray devices (6), which are respectively located inside the exhaust duct (2) and the exhaust gas treatment chamber (4), and are respectively located on the side of the dust removal device (3) away from the chicken house (1) and above the deodorizing filter (5), the discharge cylinder (7) is located at the top of the exhaust gas treatment chamber (4), the bottom of the exhaust gas treatment chamber (4) away from the exhaust duct (2) is provided with a sewage pipe, the bottom of the exhaust gas treatment chamber (4) is provided with a liquid collection pool, and the bottom of the discharge cylinder (7) is provided with an exhaust fan; The exhaust mechanism (8) includes an exhaust box (801) and an exhaust fan (803). There are several exhaust boxes (801) and they are evenly arranged on the side wall of the chicken house (1). The exhaust channel (2) is fitted around several exhaust boxes (801). The exhaust fan (803) is located inside the exhaust box (801). The feather removal mechanism (9) includes a feather baffle (901), which is located on the side of the exhaust box (801) away from the exhaust duct (2) and inside the chicken house (1); The feather removal mechanism (9) further includes a connecting plate (902), a rotating rod (903), a telescopic rod (904), a limiting seat (905), a sliding rod (906), and a first spring (907). The connecting plate (902) is fixedly installed on the left and right side walls of the feather baffle (901). There are two sets of rotating rods (903), which are evenly and alternately arranged on the side of the feather baffle (901) away from the exhaust box (801). The two sets of rotating rods (903) are separated at the middle end away from the feather baffle (901). The telescopic rod (904) is movably installed on the side of the connecting plate (902) away from the exhaust duct (2). The telescopic rod (904) is movably installed in the end of the rotating rod (903) away from the connecting plate (902). The limiting seat (905) is fixedly installed at the four corners of the end of the rotating rod (903) away from the connecting plate (902). The sliding rod (906) is fixedly installed on the end of the telescopic rod (904) located in the rotating rod (903) and inserted into the rotating rod (903). The first spring (907) is movably sleeved on the sliding rod (906). The feather removal mechanism (9) further includes a top head (908), a scraper (909), a connecting shaft (910), a second gear (911), a lifting frame (912), and a fixed shaft (913). The top head (908) is fixedly installed on the end of the telescopic rod (904) away from the rotating rod (903) and is spherical. The scraper (909) is fixedly installed on the rotating rod (903) and the telescopic rod (904) respectively, and is located on the side of the rotating rod (903) and the telescopic rod (904) near the feather baffle (901). The rotating rod (903) has a movable groove in the middle on the side near the feather baffle (901), and a scraper (909) on the telescopic rod (904) is movably installed in the movable groove. (909) is slidably connected to the feather baffle (901), the connecting shaft (910) is inserted and installed in the connecting plate (902), and is fixedly connected to the end of the rotating rod (903) away from the middle of the feather baffle (901), the second gear (911) is fixedly sleeved on the connecting shaft (910), and is located on the side of the connecting plate (902) near the exhaust channel (2), the side wall of the lifting frame (912) is movably sleeved on the second gear (911), and is slidably connected to the connecting plate (902), and the side wall of the lifting frame (912) at a right angle to it is slidably connected to the exhaust box (801), the fixed shaft (913) is fixedly installed on the side wall of the exhaust box (801), and the side wall of the lifting frame (912) is movably sleeved on the fixed shaft (913); The feather removal mechanism (9) further includes a second trapezoidal groove (914), a support rod (915), a second spring (916), a second rack (917), and a synchronization plate (918). The second trapezoidal groove (914) is fixedly installed at the bottom end of the lifting frame (912). The top end of the support rod (915) is fixedly connected to the inner top end of the lifting frame (912), and the bottom end of the support rod (915) is fixedly connected to the inner bottom end of the second trapezoidal groove (914). The second spring (916) passes through the middle of the fixed shaft (913), is movably sleeved on the support rod (915), and is located between the fixed shaft (913) and the second trapezoidal groove (914). The second rack (917) is fixedly installed on the side wall of the lifting frame (912), and is located on the side of the second gear (911) away from the exhaust box (801), and is movably connected to the second gear (911) through meshing. The synchronous plate (918) is fixedly installed at the bottom end of the lifting frame (912).

2. The large-scale egg-laying hen farm exhaust gas treatment equipment according to claim 1, characterized in that: The exhaust mechanism (8) includes a fan cylinder (802), a fixed frame (804), window blades (805), and a rotating shaft (806). The fan cylinder (802) is fixedly installed inside the exhaust box (801). The exhaust fan (803) is located inside the fan cylinder (802). The fixed frame (804) is fixedly installed at one end of the exhaust box (801) outside the chicken house (1). There are several window blades (805), which are evenly arranged inside the fixed frame (804). There are several rotating shafts (806), which are evenly arranged inside the fixed frame (804), and each is fixedly connected to one end of several window blades (805).

3. The large-scale egg-laying hen farm exhaust gas treatment equipment according to claim 2, characterized in that: The exhaust mechanism (8) includes an outer cover (807), an extension shaft (808), a timing pulley (809), and a timing belt (810). Two outer covers (807) are provided on each exhaust box (801), and are fixedly installed on the left and right sides of the exhaust box (801), respectively. There are two sets of extension shafts (808), and they are fixedly installed on both ends of the two uppermost rotating shafts (806), respectively. The timing pulley (809) is fixedly sleeved on the end of each extension shaft (808) outside the outer cover (807), and the timing belt (810) is sleeved on the timing pulley (809).

4. The large-scale egg-laying hen farm exhaust gas treatment equipment according to claim 3, characterized in that: The exhaust mechanism (8) includes a first gear (811), a translation rod (812), a support frame (813), a first rack (814), and a first trapezoidal groove (815). The first gear (811) is fixedly sleeved on one end of the rotating shaft (806) located inside the outer cover (807). The translation rod (812) is movably disposed on the side wall of the fixed frame (804) and the exhaust box (801), and is located below the first gear (811). The support frame (813) is fixedly sleeved on... On the side of the translation rod (812) away from the chicken house (1), and slidably connected to the side wall of the exhaust box (801) and the fixed frame (804), the first rack (814) is fixedly installed on the top of the support frame (813) and located below the first gear (811), and is movably connected to the first gear (811) through meshing. The first trapezoidal groove (815) is fixedly installed on the end of the translation rod (812) near the chicken house (1), and slidably connected to the side wall of the exhaust box (801).

5. A method for treating exhaust gas from a large-scale layer hen farm, applicable to the exhaust gas treatment equipment for large-scale layer hen farms as described in claim 4, characterized in that, The method includes the following steps: S1. The exhaust fan (803) is turned on inside according to different temperatures and breeding densities. At the same time, the exhaust fan in the discharge cylinder (7) is turned on. The spray device (6) is started at the same time as the exhaust fan (803) is turned on. The exhaust fan (803) draws the exhaust gas in the chicken house (1) and discharges it into the exhaust duct (2). The dust is removed by the dust removal device (3). Then the exhaust gas is chemically deodorized by the spray device (6). The exhaust gas then enters the exhaust gas treatment chamber (4). The treated exhaust gas is then physically deodorized by the deodorizing filter (5) in the exhaust gas treatment chamber (4). It is deodorized again by the spray device (6). Finally, the treated exhaust gas is discharged from the discharge cylinder (7) by the exhaust fan in the discharge cylinder (7). S2. During the process of extracting exhaust gas from the chicken house (1), feathers in the exhaust gas are isolated by the feather baffle (901). When the feather baffle (901) is blocked, the exhaust fan (803) is stopped first. Then, the extension shaft (808) is driven to rotate by the external motor connected to the extension shaft (808), thereby driving the rotating shaft (806) to rotate. The rotating shaft (806) drives the window leaf (805) to rotate ninety degrees, so that the air outlet of the exhaust box (801) is closed by the window leaf (805). S3. While the window leaf (805) rotates, the first gear (811) drives the first rack (814) to move. The first rack (814) drives the translation rod (812) to move. The translation rod (812) drives the first trapezoidal groove (815) to move. The first trapezoidal groove (815) pushes open the second trapezoidal groove (914), so that the lifting frame (912) drives the second rack (917) to rise. When the second rack (917) rises, it drives the second gear (911) to rotate. At this time, the connecting shaft (910) drives the rotation. The rotating rod (903) rotates; when the rotating rod (903) rotates, it drives the telescopic rod (904) to rotate at the same time, so that the scraper (909) scrapes off the feathers attached to the surface of the feather baffle (901); when the telescopic rod (904) contacts the rotating rod (903) below, it slides to connect with it through the top head (908), and pushes the telescopic rod (904) into the rotating rod (903) to avoid obstruction of movement, and can push away the feathers accumulated on the rotating rod (903) and the telescopic rod (904) below.

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