Hog house odor reduction device

Abstract

The utility model provides a hog house odor reducing device which comprises a hog house, a fence house is arranged in the hog house, a floor of the fence house comprises a slatted floor, an excrement soaking tank is arranged below the slatted floor and comprises an inner water tank and an outer water tank, the inner water tank is located in the hog house and arranged under the slatted floor, and the outer water tank is located in the hog house and arranged under the slatted floor. The outer water tank is located outside the hog house and communicated with the inner water tank through a communication opening formed in the wall of the hog house, the size of the outer water tank is larger than that of the inner water tank, the outer water tank is provided with a top opening, and a cover plate is movably arranged at the top opening of the outer water tank. According to the hog house, the odor in the hog house with the manure soaking tank can be reduced, and environmental pollution caused by overflow of the breeding odor can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of livestock breeding, and particularly relates to a pig house deodorization device. BACKGROUND

[0002] Odor control is a very important problem that must be considered in pig house construction, and the water bubble manure time is long, the odor amount produced by anaerobic fermentation is larger, the composition is more complex, and the health of workers and pigs is harmed, therefore, when the water bubble manure process pig house is designed, it is necessary to specially design the odor reduction to prevent secondary pollution, and the odor emission is also reduced, and the ecological environment is realized. UTILITY MODEL CONTENT

[0003] The utility model aims at solving the technical problem that the above-mentioned, provides a pig house deodorization device, it can reduce the stink in the pig house with bubble manure tank, and can reduce the environmental pollution caused by breeding odor overflow.

[0004] In order to achieve the above-mentioned purpose, the technical scheme that the utility model adopts is:

[0005] A pig house deodorization device, including pig house, the pig house is equipped with the pig house, the floor of the pig house includes the leak seam floor, the leak seam floor is equipped with bubble manure tank below, the bubble manure tank includes inner water tank and outer water tank, the inner water tank is located in the pig house and is equipped with the direct below of the leak seam floor, the outer water tank is located outside the pig house and is communicated with the inner water tank through the communication opening of the wall of the pig house, the volume of the outer water tank is greater than the volume of the inner water tank, the outer water tank has top opening, the top opening of the outer water tank is movably equipped with the cover plate.

[0006] Further, the outer water tank is surrounded by the bottom wall, the peripheral wall and the wall of the pig house, the peripheral wall is arranged around the periphery of the bottom wall and connected with the wall of the pig house to form the outer water tank with the top opening; the top of the peripheral wall is provided with a water inlet.

[0007] Further, the outer side of the wall of the pig house is provided with a chute, the top surface of the peripheral wall is recessed with a guide groove, and the guide groove and the chute are arranged in parallel opposite to each other; the opposite sides of the cover plate are respectively slidably received in the chute and the guide groove, and the cover plate can slide along the chute and the guide groove under stress to open or close the top opening.

[0008] Further, one side of the bottom wall is provided with a discharge port, and the pig house deodorization device further comprises a manure pool, the manure pool is connected with the discharge port through a discharge pipe, and a valve is arranged on the discharge pipe; the bottom wall gradually inclines downward along the direction close to the discharge port.

[0009] Further, the cover plate is provided with a gas guide pipe hole in communication with the outer water tank, the gas guide pipe hole is connected with a deodorization system through a gas guide pipe, the deodorization system comprises a first purification tank, a second purification tank, a third purification tank and a fourth purification tank arranged in sequence, the first purification tank is connected with the gas guide pipe through a first air flow accelerating tank, the second purification tank is connected with the first purification tank through a second air flow accelerating tank, the third purification tank is connected with the second purification tank through a third air flow accelerating tank, and the fourth purification tank is connected with an exhaust pipe for exhausting purified gas.

[0010] Further, the first purification tank, the second purification tank, the third purification tank and the fourth purification tank are all filled with purification liquid, and the first air flow accelerating tank, the second air flow accelerating tank and the third air flow accelerating tank are all provided with an axial flow fan.

[0011] Further, the air inlet of the first purification tank is connected with the first air flow accelerating tank through a first connecting pipe, the first connecting pipe is inserted below the liquid level of the purification liquid in the first purification tank; the second purification tank is connected with the second air flow accelerating tank through a second connecting pipe, the second connecting pipe is inserted below the liquid level of the purification liquid in the second purification tank; and the third purification tank is connected with the air outlet of the third air flow accelerating tank through a third connecting pipe, the third connecting pipe is inserted below the liquid level of the purification liquid in the third purification tank.

[0012] Further, the cover plate is made of a polyvinyl chloride transparent plate.

[0013] Further, the inner water tank is surrounded by a first side wall, a second side wall and two third side walls, the first side wall is arranged on the inner side of the wall of the pig house and above the communication port, the second side wall is arranged opposite to the first side wall, the second side wall is arranged obliquely, and the second side wall is inclined and extended to the bottom of the communication port in the downward direction; the two third side walls are respectively arranged on the opposite sides of the first side wall, and each third side wall connects the first side wall and the second side wall.

[0014] Further, the cover plate is provided with a fungus agent pouring port and an oxygen increasing pump air pipe inlet arranged at intervals.

[0015] Due to the above technical scheme, the utility model has the following beneficial effects:

[0016] 1. The pig house deodorization device, the bubble manure tank comprises an inner water tank and an outer water tank, the outer water tank with a large volume is arranged outside the pig house, most of the bubble manure tank is located outside the pig house, so that the odor is gathered in the outer water tank, thereby reducing the odor in the pig house with the bubble manure tank, being beneficial to the health of pigs, and improving the air quality of the working environment of workers cleaning manure. Meanwhile, the outer water tank is sealed by a cover plate, so that the environmental pollution caused by the odor escaping from the bubble manure tank is reduced, and an environment-friendly ecological environment is realized.

[0017] 2. The pig house deodorization device, the cover plate is provided with a bacteria agent feeding port and an oxygen increasing pump air pipe inlet at intervals; in use, the deodorization bacteria agent can be fed into the bubble manure tank through the bacteria agent feeding port, so that the utilization and inhibition of the odor are achieved; the cover plate is transparent, so that the indigenous and exogenous photosynthetic bacteria in the bubble manure water grow and reproduce, and nutrients are provided for other microorganisms in the tank; the oxygen increasing pump air pipe inlet is connected with the oxygen increasing pump to increase the oxygen in the bubble manure tank, so that the oxygen required by the indigenous and exogenous oxygen-consuming bacteria in the bubble manure water is provided, the decomposition and fermentation of the materials in the bubble manure water are promoted, the odor generated in the fermentation process of the bubble manure water is collected and purified through the deodorization system, compared with the open bubble manure tank, the fermentation time is shortened, the fermentation efficiency is improved, the odor generation is reduced, the odor discharge amount is effectively reduced, the double deodorization lines of the deodorization bacteria and the deodorization system are set, so that a good deodorization effect is achieved, the air quality of the breeding environment is improved, the equipment is simple, the operation cost is low, and the device is suitable for popularization in mountainous areas and rural areas; in addition, the cover plate is transparent, so that the water level in the bubble manure tank can be observed, and the waste of water resources caused by untimely water closing is avoided.

[0018] 3. The pig house deodorization device, the deodorization system comprises four gas purification boxes connected in sequence, most of the odor components can be removed, the air quality of the breeding environment is improved, the first airflow accelerating box, the second airflow accelerating box and the third airflow accelerating box are arranged, the odor can be timely sucked into the next purification box, and the rapid purification effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the pig house deodorization device of a preferred embodiment of the utility model;

[0020] Figure 2 It is a structure schematic view of the pig house deodorization device of a preferred embodiment of the utility model; Figure 1 It is a left view schematic view of the outer water tank in the pig house deodorization device shown in the figure;

[0021] Figure 3 It is a structure schematic view of the pig house deodorization device of a preferred embodiment of the utility model; Figure 1

[0022] Figure 4 ​The utility model discloses a pigsty deodorization device part structure's enlarged view of preferable implementation mode of the utility model;

[0023] In the drawing, 100, pigsty deodorization device;10, pigsty;11, wall;12, communicating port;13, slide;20, stall;21, fence;23, leak floor;24, solid floor;30, bubble manure groove;31, inner water tank;311, first side wall;312, second side wall;313, third side wall;32, outer water tank;321, bottom wall;323, peripheral wall;3231, observation window;3241, lowest water level line;3242, highest water level line;325, discharge port;326, water inlet;327, air guide pipe hole;328, guide groove;35, cover plate;351, bacterial agent feeding port;352, oxygenation pump air pipe inlet;40, deodorization system;41, first purification box;42, second purification box;43, third purification box;44, fourth purification box;441, exhaust pipe;45, first airflow acceleration box;46, second airflow acceleration box;47, third airflow acceleration box;481, first connecting pipe;482, second connecting pipe;483, third connecting pipe;491, first connecting pipe;492, second connecting pipe;493, third connecting pipe;50, air guide pipe;60, manure pit;70, discharge pipe;80, valve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0025] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be intervening components. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be intervening components. When a component is referred to as being "disposed" on another component, it can be directly on the other component or there can be intervening components. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "including", "comprising", "having" and the like are meant to encompass the items listed thereafter as well as other items.

[0027] Reference will now be made to the drawings, in which Figures 1 to 4 The pig house deodorization device 100 provided by the preferred embodiment of the present application comprises a pig house 10, and a stall 20 for breeding pigs is arranged in the pig house 10. A fence 21 is arranged around the stall 20 to prevent the pigs from escaping from the stall 20. The floor of the stall 20 comprises a leaky floor 23 and a solid floor 24. The surface of the leaky floor 23 is wrapped with a soft TPR material to prevent the pigs from being injured by the leaky floor 23.

[0028] The bubble manure tank 30 comprises an inner water tank 31 and an outer water tank 32. The inner water tank 31 is arranged in the pig house 10 and directly below the leaky floor 23. The outer water tank 32 is arranged outside the pig house 10 and is communicated with the inner water tank 31 through a communication port 12 arranged on the wall 11 of the pig house 10. In the embodiment, the inner water tank 31 and the outer water tank 32 are both made of concrete. The inner water tank 31 is surrounded by a first side wall 311, a second side wall 312 and two third side walls 313. The first side wall 311 is fixedly arranged on the inner side of the wall 11 of the pig house 10 and above the communication port 12. The second side wall 312 is arranged opposite to the first side wall 311. The second side wall 312 is arranged in an inclined manner. The second side wall 312 gradually inclines and extends to the bottom of the communication port 12 in a downward direction, so that the excrement and urine can be more smoothly guided to the communication port 12. The two third side walls 313 are respectively arranged on the opposite sides of the first side wall 311. Each third side wall 313 connects the first side wall 311 and the second side wall 312.

[0029] The volume of the outer water tank 32 is greater than that of the inner water tank 31. The outer water tank 32 has a top opening. A cover plate 35 is movably arranged on the top opening of the outer water tank 32. In the embodiment, the outer water tank 32 is surrounded by a bottom wall 321 and a peripheral wall 323 and the outer side of the wall 11 of the pig house 10. The peripheral wall 323 is arranged around the periphery of the bottom wall 321 and is connected with the outer side of the wall 11 of the pig house 10 to form the outer water tank 32 with the top opening. In addition, in the embodiment, one side of the bottom wall 321 is provided with a discharge port 325 for discharging the excrement and urine in the bubble manure tank 30. The bottom wall 321 gradually inclines downward along the direction close to the discharge port 325, so that the excrement and urine in the bubble manure tank 30 can automatically move to the discharge port 325 under the action of gravity.

[0030] In the embodiment, the outer water tank 32 is provided with a lowest water level line 3241 and a highest water level line 3242 above the lowest water level line 3241 on the inner wall of the peripheral wall 323. Specifically, the lowest water level line 3241 and the highest water level line 3242 can be provided on the outer side of the wall 11 of the pig house 10 by engraving or the like. The peripheral wall 323 of the outer water tank 32 is also provided with an observation window 3231 made of transparent glass to facilitate the user to observe whether the water level in the outer water tank 32 reaches the lowest water level line 3241 or the highest water level line 3242, so as to determine whether the inner water tank 31 and the outer water tank 32 need to be filled with water. Specifically, the observation window 3231 is arranged opposite to the wall 11 of the pig house 10 to facilitate observation.

[0031] In the embodiment, the outer water tank 32 has a depth of about 120 cm, and one third of the height is arranged on the ground, and the inclination of the bottom wall 321 of the outer water tank 32 to the horizontal plane is about 30°. The communication port 12 for communicating the inner water tank 31 and the outer water tank 32 is arranged at the lower part of the outer wall of the pig house 10, and the bottom of the communication port 12 is higher than the lowest part of the bottom wall 321 of the outer water tank 32 by a depth of about 80 cm. It can be understood that the size values of the outer water tank 32 and the inner water tank 31 can also be adjusted according to actual needs, and the utility model is not limited.

[0032] In the embodiment, the top of the peripheral wall 323 of the outer water tank 32 is provided with a water inlet 326 and an air duct hole 327 for communicating with the outer water tank 32, and the water inlet 326 and the air duct hole 327 are both located above the highest water level line 3242. The water inlet 326 is used to introduce water into the bubble manure tank 30. It can be understood that a control valve for controlling the opening and closing of the water inlet 326 can also be arranged at the water inlet 326. The structure of the control valve belongs to the prior art, and details are not described here to save space. The air duct hole 327 is used to connect with a deodorization system 40 to perform deodorization. In the embodiment, the air duct hole 327 is connected with the deodorization system 40 through an air duct 50. The deodorization system 40 includes a first purification box 41, a second purification box 42, a third purification box 43 and a fourth purification box 44 arranged in sequence. The first purification box 41 is connected with the air duct 50 through a first air flow accelerating box 45, the second purification box 42 is connected with the first purification box 41 through a second air flow accelerating box 46, the third purification box 43 is connected with the second purification box 42 through a third air flow accelerating box 47, and the fourth purification box 44 is connected with an exhaust pipe 441 for discharging purified gas.

[0033] In the embodiment, the first purification tank 41, the second purification tank 42, the third purification tank 43 and the fourth purification tank 44 are all filled with purification liquid, wherein the purification liquid in the first purification tank 41 is normal temperature water, the purification liquid in the second purification tank 42 is ethanol, the purification liquid in the third purification tank 43 is baking soda solution, and the purification liquid in the fourth purification tank 44 is methane oxidizing bacteria and its culture solution. The air inlet of the first airflow accelerating tank 45 is connected with the end of the air guide pipe 50 far from the air guide pipe hole 327; the air inlet of the first purification tank 41 is connected with the air outlet of the first airflow accelerating tank 45 through the first connecting pipe 481, and the first connecting pipe 481 is inserted below the liquid level of the purification liquid in the first purification tank 41, so as to increase the contact area of the to-be-purified gas and the purification liquid, and thus to improve the purification effect; the air inlet of the second airflow accelerating tank 46 is connected with the air outlet of the first purification tank 41 through the first connecting pipe 491; the air inlet of the second purification tank 42 is connected with the air outlet of the second airflow accelerating tank 46 through the second connecting pipe 482, and the second connecting pipe 482 is inserted below the liquid level of the purification liquid in the second purification tank 42, so as to increase the contact area of the to-be-purified gas and the purification liquid, and thus to improve the purification effect; the air inlet of the third airflow accelerating tank 47 is connected with the air outlet of the second purification tank 42 through the second connecting pipe 492; the air inlet of the third purification tank 43 is connected with the air outlet of the third airflow accelerating tank through the third connecting pipe 483, and the third connecting pipe 483 is inserted below the liquid level of the purification liquid in the third purification tank 43, so as to increase the contact area of the to-be-purified gas and the purification liquid, and thus to improve the purification effect; the air inlet of the fourth purification tank 44 is connected with the air outlet of the third purification tank 43 through the third connecting pipe 493; and the air outlet pipe 441 is fixed at the air outlet of the fourth purification tank 44. The first purification tank 41, the second purification tank 42, the third purification tank 43 and the fourth purification tank 44 are all provided with a purification liquid injection port (not shown in the figure) and a purification liquid discharge port (not shown in the figure) to facilitate the replacement of the purification liquid, wherein the purification liquid injection port can be arranged at the top of the corresponding purification tank, the purification liquid discharge port can be arranged at the bottom of the corresponding purification tank, and the purification liquid injection port and the purification liquid discharge port are both provided with a control valve.

[0034] The first airflow accelerating tank 45, the second airflow accelerating tank 46 and the third airflow accelerating tank 47 are all provided with an axial flow fan (not shown in the figure), which is arranged between the air inlet and the air outlet of the corresponding airflow accelerating tank, and can suck the to-be-deodorized gas from the air inlet into the corresponding airflow accelerating tank and discharge it from the air outlet. The structure of the axial flow fan belongs to the prior art, and thus will not be described here again to save space. The first airflow accelerating tank 45, the second airflow accelerating tank 46 and the third airflow accelerating tank 47 are all provided with a tank door to facilitate the opening of the first airflow accelerating tank 45, the second airflow accelerating tank 46 and the third airflow accelerating tank 47, so as to facilitate the operation or maintenance of the axial flow fan. The installation of the tank door belongs to the prior art, and thus will not be described here again to save space.

[0035] The cover plate 35 is movably arranged on the top of the peripheral wall 323. In the present embodiment, a guide groove 328 is formed on the top surface of the peripheral wall 323. The outer side of the wall 11 of the pig house 10 is fixedly arranged with a sliding groove 13, which is arranged in parallel with the guide groove 328. The opposite sides of the cover plate 35 are slidably received in the sliding groove 13 and the guide groove 328, respectively. The cover plate 35 is forced to slide along the sliding groove 13 and the guide groove 328 to open or close the top opening of the outer water tank 32. In addition, a bacteria injection port 351 and an oxygen pump air pipe inlet 352 are formed on the cover plate 35 at intervals. The bacteria injection port 351 is used to inject deodorizing bacteria into the outer water tank 32. The oxygen pump air pipe inlet 352 is used to connect the air pipe of an oxygen pump (not shown) to introduce oxygen into the bubble manure tank 30. Preferably, the oxygen pump can be a solar charging oxygen pump. The deodorizing bacteria and the solar charging oxygen pump can be directly purchased from the market. For the sake of brevity, they will not be described here. The cover plate 35 is preferably made of a polyvinyl chloride transparent plate, which can make the light in the outer water tank 32 more sufficient to be suitable for the growth and reproduction of light energy bacteria in the bubble manure water. The polyvinyl chloride transparent plate has good corrosion resistance and can improve its service life. It can be understood that, in order to reduce the overflow of odor in the outer water tank 32, the opening of the bacteria injection port 351 should not be too large, about 3 cm, or a wooden plug can be used to plug the bacteria injection port 351.

[0036] In the present embodiment, the pig house deodorization device 100 further comprises a manure tank 60 connected with the discharge port 325 through a discharge pipe 70. A valve 80 is arranged on the discharge pipe 70 to control the opening and closing of the discharge pipe 70.

[0037] When the pig house deodorization device 100 is used, the valve 80 is closed, water is introduced from the water inlet 326, deodorizing bacteria is injected from the bacteria injection port 351 of the cover plate 35, and normal temperature water, ethanol, baking soda, methane-oxidizing bacteria and their culture solution are injected into the first purification tank 41, the second purification tank 42, the third purification tank 43 and the fourth purification tank 44, respectively. Pigs are fed, the oxygen pump and the axial flow fan are started, the axial flow fan sucks the gas in the outer water tank 32 into the first purification tank 41, the second purification tank 42 and the third purification tank 43 for treatment in sequence, and the purification liquid is replaced after a predetermined time. The deodorizing bacteria is injected once every 15 days. After the pigs are sold, the oxygen pump and the axial flow fan are turned off, the valve 80 is opened, and the manure in the bubble manure tank 30 flows into the manure tank 60 for subsequent treatment. The cover plate 35 on the outer water tank 32 is slid open, the water tank is cleaned and disinfected, and preparation is made for the feeding of the next batch of pigs.

[0038] The pig house deodorization device 100, the bubble manure tank 30 includes the inner water tank 31 and the outer water tank 32, the outer water tank 32 with larger volume is arranged outside the pig house 10, so that the bubble manure tank 30 is mostly located outside the pig house 10, the odor in the pig house 10 with the bubble manure tank 30 can be reduced, and the odor is gathered in the outer water tank 32, which is beneficial to the health of pigs and improves the air quality of the working environment of the workers.

[0039] The pig house deodorization device 100, the cover plate 35 is provided with a fungicide inlet 351 and an oxygenation pump air pipe inlet 352 at intervals; during use, the deodorizing bacteria can be put into the bubble manure tank 30 through the fungicide inlet 351, which can play a role in utilizing and inhibiting the odor; the light-transmitting cover plate 35 is beneficial to the growth and reproduction of indigenous and exogenous light-dependent bacteria in the bubble manure water, and provides a nutrient matrix for other microorganisms in the tank; the oxygenation pump air pipe inlet 352 is connected with the oxygenation pump to increase the oxygen in the bubble manure tank 30, which can provide the oxygen required for the growth of indigenous and exogenous bacteria in the bubble manure water, promote the decomposition and fermentation of the materials in the bubble manure water, and the bubble manure water is fermented by the exogenous bacteria, which is beneficial to reducing the subsequent treatment cost; the odor generated during the fermentation of the bubble manure water is concentrated and purified by the deodorization system 40 and then discharged, compared with the open bubble manure tank, the fermentation time is shortened, the fermentation efficiency is improved, the odor generation is reduced, the odor discharge amount is effectively reduced, the double deodorization defense lines of the deodorizing bacteria and the deodorization system 40 are set, a good deodorization effect is achieved, the air quality of the breeding environment is improved, and the equipment is simple and the operation cost is low, which is suitable for promotion in mountainous areas and rural areas; in addition, the cover plate 35 is transparent, which is convenient for observing the water level in the bubble manure tank 30, and avoids the waste of water resources caused by not timely closing the water.

[0040] The pig house deodorization device 100, the deodorization system 40 includes four gas purification boxes connected in series, which can remove most of the odor components and improve the air quality of the breeding environment; at the same time, the first airflow accelerating box 45, the second airflow accelerating box 46 and the third airflow accelerating box 47 are arranged, which can timely suck the odor into the next purification box and realize rapid purification.

[0041] The pig house deodorization device 100 can reduce the entry of foreign organisms and microorganisms, and is beneficial to the prevention and control of diseases. The movable setting of the cover plate 35 also facilitates workers to open the outer water tank 32 for cleaning and disinfection. The use of the oxygen increasing pump is to input oxygen into the bubble manure water, which is beneficial to the growth and reproduction of aerobic bacteria, promotes the decomposition of organic matter and the removal of odor. The oxygen increasing pump and the axial flow fan can be powered by solar energy, which converts solar energy into electric energy, reducing the operating cost.

[0042] It can be understood that the stall 20 can also include other structures, for example, the wall of the pig house 10 is provided with an access door, the fence 21 is provided with a door body for the access of animals or users, and a water dispenser is arranged in the stall 20. The structure of the stall 20 belongs to the prior art, and details are not described here to save space.

[0043] It can be understood that a manure pump can also be arranged on the discharge pipe 70 to make the bubble manure water in the outer water tank 32 enter the manure pit 60 faster.

[0044] It can be understood that the cover plate 35 can also be movably arranged on the top of the outer water tank 32 by other connection methods in the prior art, for example, a rotating manner.

[0045] The above description is a detailed description of the preferred and feasible embodiments of the present application, but the embodiments are not used to limit the patent application range of the present application. Any equivalent changes or modified changes completed under the technical spirit of the present application should belong to the patent range covered by the present application.

Claims

1. A pig house deodorization device, comprising a pig house, wherein the pig house is provided with a stall, the floor of the stall comprises a slatted floor, and a manure trough is provided below the slatted floor, characterized in that: The manure soaking trough includes an inner water trough and an outer water trough. The inner water trough is located inside the pig house and is arranged directly below the slatted floor. The outer water trough is located outside the pig house and is connected to the inner water trough through a connecting port provided on the wall of the pig house. The volume of the outer water trough is larger than that of the inner water trough. The outer water trough has a top opening, and a cover plate is movably installed at the top opening of the outer water trough.

2. The pig house odor reduction device according to claim 1, characterized in that: The outer water trough is formed by a bottom wall, a peripheral wall and the wall of the pig house. The peripheral wall is arranged around the periphery of the bottom wall and is connected to the wall of the pig house to form an outer water trough with the top opening; a water inlet is provided at the top of the peripheral wall.

3. The pig house odor reduction device according to claim 2, characterized in that: A slide groove is provided on the outer side surface of the wall of the pig house, and a guide groove is recessed on the top surface of the peripheral wall, and the guide groove is arranged parallel to and opposite to the slide groove; the opposite sides of the cover plate are slidably received in the slide groove and the guide groove respectively, and the cover plate can slide along the slide groove and the guide groove under force to open or close the top opening.

4. The pig house odor reduction device according to claim 2, characterized in that: A discharge port is provided on one side of the bottom wall. The pig house odor reduction device also includes a manure pit, which is connected to the discharge port through a discharge pipe, and a valve is installed on the discharge pipe; the bottom wall gradually slopes downward in the direction close to the discharge port.

5. The pig house odor reduction device according to claim 1, characterized in that: An air duct hole communicating with the outer water tank is provided on the cover plate, and the air duct hole is connected to a deodorization system through an air duct. The deodorization system includes a first purification box, a second purification box, a third purification box and a fourth purification box arranged in sequence, the first purification box is connected to the air duct through a first airflow acceleration box, the second purification box is connected to the first purification box through a second airflow acceleration box, the third purification box is connected to the second purification box through a third airflow acceleration box, and the fourth purification box is connected to an exhaust pipe for discharging purified gas.

6. The pig house odor reduction device according to claim 5, characterized in that: The first purification box, the second purification box, the third purification box and the fourth purification box are all filled with purification liquid, and the first airflow acceleration box, the second airflow acceleration box and the third airflow acceleration box are all equipped with axial flow fans.

7. The pig house odor reduction device according to claim 6, characterized in that: The air inlet of the first purification box is connected to the first airflow acceleration box through a first connecting pipe, and the first connecting pipe is inserted below the liquid level of the purification liquid in the first purification box; the second purification box is connected to the second airflow acceleration box through a second connecting pipe, and the second connecting pipe is inserted below the liquid level of the purification liquid in the second purification box; the third purification box is connected to the air outlet of the third airflow acceleration box through a third connecting pipe, and the third connecting pipe is inserted below the liquid level of the purification liquid in the third purification box.

8. The pig house odor reduction device according to claim 1, characterized in that: The cover plate is made of a transparent polyvinyl chloride plate.

9. The pig house odor reduction device according to claim 1, characterized in that: The inner water trough is formed by a first side wall, a second side wall and two third side walls. The first side wall is arranged on the inner side of the wall of the pig house and is located above the connecting port. The second side wall is arranged opposite to the first side wall. The second side wall is arranged at an angle. The second side wall gradually inclines in a downward direction toward the connecting port and extends to the bottom of the connecting port; the two third side walls are respectively arranged on opposite sides of the first side wall, and each third side wall connects the first side wall and the second side wall.

10. The pig house odor reduction device according to claim 1, characterized in that: The cover plate is provided with a bacterial agent input port and an oxygen pump air pipe inlet at intervals.

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