Ventilation equipment for farm

Abstract

The invention discloses ventilation equipment for a farm, and belongs to the technical field of ventilation equipment. Ventilation equipment for a livestock farm comprises a device plate and further comprises a cavity and a ventilation device, the cavity is formed in the device plate, a strip-shaped ventilation groove communicated with the cavity is formed in the upper end of the device plate, sewage discharge grooves communicated with the cavity are formed in the two sides of the lower end of the device plate, and a grating plate is installed in the strip-shaped ventilation groove; an air suction port is formed in the bottom of the ventilation hood, the ventilation hood is installed on the inner top of the cavity in a sliding mode, and a reciprocating part for driving the ventilation hood to slide in a reciprocating mode along the strip-shaped ventilation grooves is arranged on the device plate; the domestic pig house can effectively reduce upward drifting of peculiar smell on the ground, the ventilation effect is remarkably improved, and the disease probability of domestic pigs is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation equipment, and in particular to ventilation equipment for breeding farms. Background Art

[0002] A breeding farm refers to a place used to raise various poultry, livestock or other economic animals. Depending on the breeding objects, breeding farms can be divided into many categories, such as chicken farms, pig farms, cattle farms, sheep farms, fish farms, etc.

[0003] During the pig farming process, it was found that the ground of the farm would continue to emit odor due to the large amount of feces, food, and hair and dandruff from the pigs. These odors are mainly composed of ammonia, hydrogen sulfide, volatile fatty acids, indole and its derivatives. Therefore, the farm needs to be ventilated, but the existing ventilation method is relatively simple, and it is difficult to efficiently expel the odor in the farm, making the pigs prone to illness due to the odor. Summary of the invention

[0004] The purpose of the present invention is to solve the problem of poor ventilation effect of ventilation equipment in farms in the prior art, and to propose ventilation equipment for farms.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A ventilation device for a breeding farm comprises a device plate, and also comprises: a cavity arranged in the device plate, wherein the upper end of the device plate is provided with a strip ventilation groove connected to the cavity, and both sides of the lower end of the device plate are provided with drainage grooves connected to the cavity, and a grille plate is installed in the strip ventilation groove; a ventilation hood with an air intake at the bottom is slidably installed on the inner top of the cavity, wherein the device plate is provided with a reciprocating part that drives the ventilation hood to slide back and forth along the strip ventilation groove.

[0007] In order to improve the ventilation effect, preferably, the reciprocating part includes a first reciprocating screw rotatably installed in the cavity, the first reciprocating screw is parallel to the strip ventilation groove, the outer wall of the first reciprocating screw is threadedly connected to a slide, the ventilation hood is fixedly connected to the slide, and the outer wall of the device plate is fixedly installed with a driving motor for driving the first reciprocating screw to rotate.

[0008] In order to facilitate the ventilation hood to absorb air, preferably, a negative pressure fan is fixedly installed on the outer wall of the device plate, and the suction end of the negative pressure fan is fixedly connected to a telescopic hose, and the end of the telescopic hose is fixedly connected to and communicated with the ventilation hood.

[0009] In order to increase the air intake area of ​​the strip ventilation slots, preferably, a plurality of air guide plates are rotatably installed in the strip ventilation slots through a rotating shaft, the rotating shaft is located in the middle of the air guide plates, a connecting rod is provided at the lower ends of the plurality of air guide plates, the connecting rod is rotatably connected to the lower ends of the air guide plates through a rotating rod, a swinging part for driving the air guide plates to swing back and forth is provided in the cavity, and the axial cross-section shape of the strip ventilation slots is an inverted trapezoid.

[0010] In order to make the air guide plate swing back and forth in the strip ventilation groove, further, the swinging part includes a second reciprocating screw rotatably connected to the top of the cavity, and the outer wall of the second reciprocating screw is threadedly connected with a slider, wherein the slider is slidingly connected to the inner wall of the cavity, and the lower end of the slider is fixedly connected to a pull rod, and an elastic rope is fixedly connected between the end of the pull rod and the bottom of one of the air guide plates, and the ventilation hood is connected to the second reciprocating screw through a linkage part.

[0011] In order to make the second reciprocating screw reciprocate, the linkage part further includes a reel fixedly mounted on the shaft end of the second reciprocating screw, a pull rope is fixedly wrapped around the outer wall of the reel, the end of the pull rope is fixedly connected to the top of the ventilation hood, and a torsion spring is installed between the shaft end of the second reciprocating screw and the inner wall of the cavity.

[0012] In order to prevent the grille plate from being blocked by foreign objects, the upper end of the air guide plate is further attached to the lower end surface of the grille plate, and the lower end surface of the grille plate is fixedly connected with protrusions arranged at equal intervals. When the air guide plate swings, the top of the air guide plate will sweep over the protrusions, wherein the grille plate is longitudinally slidably installed in the strip ventilation groove, and a spring is installed between the lower end of the grille plate and the inner wall of the strip ventilation groove.

[0013] In order to facilitate the cleaning of the fecal water in the cavity, preferably, a scraper fixedly connected to the ventilation hood is provided at the inner bottom of the cavity, and the axial cross-section of the scraper is an isosceles trapezoid.

[0014] In order to reduce the residual foreign matter on the scraper, further, nozzles are fixedly installed on both sides of the lower end of the ventilation hood, and the outer walls of the two nozzles are fixedly installed with nozzles facing the outer wall of the scraper.

[0015] In order to facilitate the air supply to the nozzle, a telescopic airbag is further installed between the ventilation hood and the inner wall of the cavity, and the telescopic airbag is fixedly connected to an intake pipe and an exhaust pipe connected thereto. A one-way valve is fixedly installed in the intake pipe and the exhaust pipe, and the end of the exhaust pipe is fixedly connected and connected to the nozzle.

[0016] Compared with the prior art, the present invention provides a ventilation device for a farm, which has the following beneficial effects:

[0017] 1. The farm uses ventilation equipment to suck air into the ventilation hood through a telescopic hose, and the cavity will absorb the air in the farm through the strip ventilation slots, which can absorb the odor in the farm. Since the strip ventilation slots are set on the ground, they can effectively reduce the odor on the ground from drifting upward, significantly improving the ventilation effect.

[0018] 2. The ventilation equipment used in the farm drives the first reciprocating screw to rotate through a driving motor, and the first reciprocating screw drives the slide to slide back and forth along the inner wall of the cavity, and the slide drives the ventilation hood to slide back and forth in the cavity, so that the ventilation hood can ventilate the farm more evenly, significantly improving the ventilation effect of the farm and reducing the probability of disease in domestic pigs.

[0019] 3. The farm uses ventilation equipment, and the reciprocating ventilation hood will pull the pull rope, so that multiple air guide plates will swing back and forth under the action of the connecting rod, so that the strip ventilation slots can absorb air in different wind directions, thereby increasing the ventilation area of ​​the strip ventilation slots, and then improving the ventilation effect of the farm.

[0020] 4. The ventilation equipment used in the farm will indirectly sweep over the bumps through the reciprocating air guide plate, which will cause the grille plate to vibrate up and down, thereby preventing the grille plate from being blocked by foreign objects, ensuring the ventilation efficiency of the strip ventilation slots for the farm, and the upper end surface of the device plate will be drier and more comfortable.

[0021] 5. The farm uses ventilation equipment. The reciprocating sliding ventilation hood will drive the scraper at the bottom to slide back and forth in the cavity. The scraper will push the manure in the cavity into the sewage trough, thereby improving the efficiency of discharging manure from the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an axonometric structural diagram of a ventilation device for a farm proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the axonometric structure of a device plate of a ventilation device for a farm proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of an axonometric cutaway structure of a ventilation device for a farm proposed by the present invention;

[0025] Figure 4 This is a partial axonometric structural diagram of a ventilation device for a farm proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of the axonometric structure of an air guide plate of a ventilation device for a farm proposed by the present invention;

[0027] Figure 6This is a schematic diagram of the axonometric structure of a ventilation hood of a ventilation device for a breeding farm proposed by the present invention;

[0028] Figure 7 A ventilation device for a farm proposed by the present invention Figure 5 Schematic diagram of the structure of part A;

[0029] Figure 8 This is a schematic diagram of the axonometric structure of a second reciprocating screw of a ventilation device for a farm proposed by the present invention.

[0030] In the figure: 1, device plate; 2, strip ventilation slot; 3, sewage slot; 4, grille plate; 5, ventilation hood; 6, air intake port; 7, first reciprocating screw; 8, slide; 9, drive motor; 10, rotating shaft; 11, air guide plate; 12, rotating rod; 13, connecting rod; 14, second reciprocating screw; 15, slider; 16, pull rod; 17, elastic rope; 18, reel; 19, pull rope; 20, spring; 21, scraper; 22, bump; 23, negative pressure fan; 24, telescopic hose; 25, nozzle; 26, nozzle; 27, telescopic air bag; 28, exhaust pipe; 29, suction pipe; 30, cavity. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Embodiment 1:

[0034] Reference Figure 1-Figure 8, a ventilation device for a breeding farm, comprising a device plate 1 for installation on the floor of a breeding farm, and also comprising: a cavity 30 for storing part of manure, which is arranged in the device plate 1, wherein a strip ventilation groove 2 communicating with the cavity 30 is provided at the upper end of the device plate 1, and a sewage trough 3 communicating with the cavity 30 is provided on both sides of the lower end of the device plate 1, and a gate for opening and closing is installed in the sewage trough 3, which is not shown in the figure, and a grille plate 4 is installed in the strip ventilation groove 2, and the grille plate 4 is provided with mesh holes; a ventilation hood 5 with an air intake port 6 at the bottom is slidably installed on the inner top of the cavity 30, wherein a reciprocating part for driving the ventilation hood 5 to slide back and forth along the strip ventilation groove 2 is provided on the device plate 1, and a negative pressure fan 23 is fixedly installed on the outer wall of the device plate 1, and a telescopic hose 24 is fixedly connected to the suction end of the negative pressure fan 23, and the end of the telescopic hose 24 is fixedly connected to and communicated with the ventilation hood 5.

[0035] Specifically, when in use, the device plate 1 is fixedly installed on the ground of the farm to replace the ground of the farm, so that part of the urine and feces produced on the device plate 1 can flow into the cavity 30 through the strip ventilation slots 2 to keep the device plate 1 dry, and then the negative pressure fan 23 is started, and the negative pressure fan 23 will suck air from the ventilation hood 5 through the telescopic hose 24, and the ventilation hood 5 will suck air from the cavity 30 through the air intake port 6, and the cavity 30 will suck the air in the farm through the strip ventilation slots 2, so that the odor in the farm can be removed. The strip ventilation slots 2 are arranged on the ground, so the upward diffusion of odor on the ground can be effectively reduced, and the ventilation effect can be significantly improved. Part of the feces and pig urine on the upper end surface of the device plate 1 can also be discharged into the cavity 30 through the strip ventilation slots 2, and the grille plate 4 can prevent the pigs from falling into the strip ventilation slots 2; during ventilation, the reciprocating part will drive the ventilation hood 5 to slide back and forth in the cavity 30, so that the ventilation hood 5 can ventilate the farm more evenly, significantly improving the ventilation effect of the farm and reducing the probability of illness of domestic pigs.

[0036] Embodiment 2:

[0037] Reference Figure 3 and Figure 4 , which is basically the same as Example 1, and furthermore, specifically discloses a specific implementation scheme of the reciprocating part.

[0038] The above-mentioned reciprocating part includes a first reciprocating screw 7 rotatably installed in the cavity 30, the first reciprocating screw 7 is parallel to the strip ventilation groove 2, the outer wall of the first reciprocating screw 7 is threadedly connected with a slide 8, the ventilation hood 5 is fixedly connected to the slide 8, and the outer wall of the device plate 1 is fixedly installed with a driving motor 9 for driving the first reciprocating screw 7 to rotate.

[0039] Specifically, when in use, the device plate 1 is fixedly installed on the ground of the farm to replace the ground of the farm, so that part of the urine and feces produced on the device plate 1 can flow into the cavity 30 through the strip ventilation groove 2 to keep the device plate 1 dry. During ventilation, the drive motor 9 is started, and the drive motor 9 will drive the first reciprocating screw 7 to rotate, and the first reciprocating screw 7 will drive the slide 8 to slide back and forth along the inner wall of the cavity 30, and the slide 8 will drive the ventilation hood 5 to slide back and forth in the cavity 30, so that the ventilation hood 5 can ventilate the farm more evenly, significantly improving the ventilation effect of the farm and reducing the probability of illness in domestic pigs.

[0040] Embodiment three:

[0041] Reference Figure 3-Figure 8 , which is basically the same as the second embodiment, and further, a specific implementation scheme for increasing the air intake area of ​​the strip ventilation slots 2 is specifically added.

[0042] A plurality of air guide plates 11 are rotatably installed in the above-mentioned strip ventilation slot 2 through a rotating shaft 10, the rotating shaft 10 is located in the middle of the air guide plate 11, and a connecting rod 13 is provided at the lower end of the plurality of air guide plates 11, and the connecting rod 13 is rotatably connected to the lower end of the air guide plate 11 through a rotating rod 12, and a swinging part for driving the air guide plate 11 to swing back and forth is provided in the cavity 30, and the axial cross-section shape of the strip ventilation slot 2 is an inverted trapezoid, that is, the upper end of the strip ventilation slot 2 is larger than the lower end thereof, and the swinging part includes a second reciprocating screw 14 rotatably connected to the top of the cavity 30, and the outer wall of the second reciprocating screw 14 is threadedly connected to a slider 15, wherein the slider 15 is slidably connected to the inner wall of the cavity 30, and the lower end of the slider 15 is fixedly connected to a pull rod 16, and an elastic rope 17 is fixedly connected between the end of the pull rod 16 and the bottom of one of the air guide plates 11, and the ventilation hood 5 is connected to the second reciprocating screw 14 through a linkage part.

[0043] Specifically, when the ventilation hood 5 slides back and forth, the linkage part will drive the second reciprocating screw 14 to rotate, and the second reciprocating screw 14 will drive the slider 15, and the reciprocating slider 15 will drive the pull rod 16 to slide back and forth, and the pull rod 16 will pull one of the air guide plates 11 to swing back and forth on the rotating shaft 10 through the elastic rope 17. Since the connecting rod 13 is connected to the multiple air guide plates 11 through the rotating rod 12, the multiple air guide plates 11 will swing back and forth under the action of the connecting rod 13, so that the strip ventilation slots 2 can absorb air in different wind directions, thereby increasing the ventilation area of ​​the strip ventilation slots 2, and then improving the ventilation effect of the farm.

[0044] The above-mentioned linkage part includes a drum 18 fixedly installed on the axial end of the second reciprocating screw 14, and a pull rope 19 is fixedly wound on the outer wall of the drum 18. The end of the pull rope 19 is fixedly connected to the top of the ventilation hood 5. A torsion spring is installed between the axial end of the second reciprocating screw 14 and the inner wall of the cavity 30, and the torsion spring is not shown in the figure.

[0045] Specifically, when the ventilation hood 5 slides toward the two sides of the cavity 30, the ventilation hood 5 will pull the pull rope 19, and the pull rope 19 will be unloaded from the reel 18, and the reel 18 will drive the second reciprocating screw 14 to rotate. When the ventilation hood 5 moves to the middle of the cavity 30, the torsion spring will drive the second reciprocating screw 14 and the reel 18 to reverse and reset, and the reel 18 will wind the pull rope 19 again.

[0046] Embodiment 4:

[0047] Reference Figure 5 and Figure 7 , which is basically the same as the third embodiment, and further, a specific implementation scheme for preventing the grid plate 4 from being blocked is specifically added.

[0048] The upper end of the above-mentioned air guide plate 11 is attached to the lower end surface of the grille plate 4, and the lower end surface of the grille plate 4 is fixedly connected with protrusions 22 arranged at equal intervals. The number of protrusions 22 is 2-8, and the preferred number in this application is 6. When the air guide plate 11 swings, the top of the air guide plate 11 will sweep over the protrusions 22, wherein the grille plate 4 is longitudinally slidably installed in the strip ventilation slot 2, and a spring 20 is installed between the lower end of the grille plate 4 and the inner wall of the strip ventilation slot 2.

[0049] Specifically, when the air guide plate 11 swings back and forth, the air guide plate 11 will indirectly sweep over the protrusion 22. When the protrusion 22 is pressed upward by the air guide plate 11, the protrusion 22 will drive the grille plate 4 to lift upward. When the air guide plate 11 sweeps over the protrusion 22, the spring 20 will drive the grille plate 4 to move downward and reset. Therefore, the reciprocating swinging air guide plate 11 will cause the grille plate 4 to shake back and forth up and down, thereby preventing the grille plate 4 from being blocked by foreign objects, thereby ensuring the ventilation efficiency of the strip ventilation slots 2 for the farm, and the upper end surface of the device plate 1 will also be drier and more comfortable.

[0050] Embodiment five:

[0051] Reference Figure 3 , Figure 4 as well as Figure 6 , which is basically the same as the fourth embodiment, and further, a specific implementation scheme for improving the efficiency of the cavity 30 in discharging manure water is specifically added.

[0052] A scraper 21 fixedly connected to the ventilation hood 5 is provided at the inner bottom of the cavity 30 , and the axial cross-section of the scraper 21 is in an isosceles trapezoidal shape.

[0053] Specifically, when it is necessary to clean the fecal water in the cavity 30, the sewage trough 3 is opened, and the fecal water in the cavity 30 will be discharged through the sewage trough 3. During this period, the reciprocating ventilation hood 5 will drive the scraper 21 at the bottom to slide back and forth in the cavity 30, and the scraper 21 will push the fecal water in the cavity 30 into the sewage trough 3, thereby improving the efficiency of discharging fecal water from the cavity 30.

[0054] Nozzles 25 are fixedly installed on both sides of the lower end of the above-mentioned ventilation hood 5, and nozzles 26 facing the outer wall of the scraper 21 are fixedly installed on the outer walls of the two nozzles 25. A telescopic airbag 27 is installed between the ventilation hood 5 and the inner wall of the cavity 30. The telescopic airbag 27 is fixedly connected to an intake pipe 29 and an exhaust pipe 28 connected to it. One-way valves are fixedly installed in the intake pipe 29 and the exhaust pipe 28, and the end of the exhaust pipe 28 is fixedly connected and connected to the nozzle 25.

[0055] Specifically, when the ventilation hood 5 slides back and forth, the ventilation hood 5 will reciprocately stretch and compress the telescopic airbag 27. When the telescopic airbag 27 is compressed, air will be blown to the nozzle 25 through the exhaust pipe 28. The nozzle 25 will spray the airflow to the outer walls on both sides of the scraper 21 through the nozzle 26, thereby blowing off part of the dirt on the outer wall of the scraper 21, so that the scraper 21 can efficiently scrape the feces and water in the cavity 30. When the telescopic airbag 27 is stretched, air will be sucked in through the suction pipe 29.

[0056] The ventilation equipment for the breeding farm is used by fixing the device plate 1 on the ground of the breeding farm to replace the ground of the breeding farm, so that part of the urine and feces produced on the device plate 1 can flow into the cavity 30 through the strip ventilation slots 2 to keep the device plate 1 dry, and then the negative pressure fan 23 is started, and the negative pressure fan 23 will suck air to the ventilation hood 5 through the telescopic hose 24, and the ventilation hood 5 will suck air to the cavity 30 through the air inlet 6, and the cavity 30 will suck the air in the breeding farm through the strip ventilation slots 2, so as to suck away the odor in the breeding farm. Since the strip ventilation slots 2 are arranged on the ground, the odor on the ground can be effectively reduced from drifting upward, and the ventilation effect can be significantly improved. Part of the feces and pig urine on the upper end surface of the device plate 1 can also be discharged into the cavity 30 through the strip ventilation slots 2, and the grille plate 4 can prevent the pig from falling into the strip ventilation slots 2;

[0057] During ventilation, the drive motor 9 is started, which will drive the first reciprocating screw 7 to rotate, and the first reciprocating screw 7 will drive the slide 8 to slide back and forth along the inner wall of the cavity 30, and the slide 8 will drive the ventilation hood 5 to slide back and forth in the cavity 30, so that the ventilation hood 5 can ventilate the farm more evenly, significantly improving the ventilation effect of the farm and reducing the probability of disease in domestic pigs.

[0058] When the ventilation hood 5 slides toward the two sides of the cavity 30, the ventilation hood 5 will pull the pull rope 19, and the pull rope 19 will be unloaded from the reel 18, and the reel 18 will drive the second reciprocating screw 14 to rotate, and the second reciprocating screw 14 will drive the slider 15. The reciprocating slider 15 will drive the pull rod 16 to slide back and forth, and the pull rod 16 will pull one of the air guide plates 11 to swing back and forth on the rotating shaft 10 through the elastic rope 17. Since the connecting rod 13 is connected to the multiple air guide plates 11 through the rotating rod 12, the multiple air guide plates 11 will swing back and forth under the action of the connecting rod 13, so that the strip ventilation slots 2 can absorb air in different wind directions, thereby increasing the ventilation area of ​​the strip ventilation slots 2, and thus improving the ventilation effect of the farm. When the ventilation hood 5 moves to the middle of the cavity 30, the torsion spring will drive the second reciprocating screw 14 and the reel 18 to reverse and reset, and the reel 18 will wrap the pull rope 19 again.

[0059] When the air guide plate 11 swings back and forth, the air guide plate 11 will indirectly sweep over the protrusion 22. When the protrusion 22 is pressed upward by the air guide plate 11, the protrusion 22 will drive the grille plate 4 to lift upward. When the air guide plate 11 sweeps over the protrusion 22, the spring 20 will drive the grille plate 4 to move downward and reset. Therefore, the reciprocating swinging air guide plate 11 will cause the grille plate 4 to shake back and forth up and down, thereby preventing the grille plate 4 from being blocked by foreign objects, thereby ensuring the ventilation efficiency of the strip ventilation slots 2 for the farm, and the upper end surface of the device plate 1 will also be drier and more comfortable.

[0060] When it is necessary to clean the fecal water in the cavity 30, the sewage trough 3 is opened, and the fecal water in the cavity 30 will be discharged through the sewage trough 3. During this period, the reciprocating ventilation hood 5 will drive the scraper 21 at the bottom to slide back and forth in the cavity 30, and the scraper 21 will push the fecal water in the cavity 30 into the sewage trough 3, thereby improving the efficiency of discharging fecal water from the cavity 30. When the ventilation hood 5 slides back and forth, the ventilation hood 5 will reciprocately stretch and compress the telescopic airbag 27. When the telescopic airbag 27 is compressed, air will be blown to the nozzle 25 through the exhaust pipe 28. The nozzle 25 will spray the airflow to the outer walls on both sides of the scraper 21 through the nozzle 26, so that part of the dirt on the outer wall of the scraper 21 can be blown off, so that the scraper 21 can efficiently scrape the fecal water in the cavity 30. When the telescopic airbag 27 is stretched, air will be sucked through the suction pipe 29.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ventilation device for a farm, comprising a device plate (1), characterized in that: Also includes: A cavity (30) is provided in the device plate (1), The upper end of the device plate (1) is provided with a strip-shaped ventilation slot (2) communicating with the cavity (30), and both sides of the lower end of the device plate (1) are provided with drainage slots (3) communicating with the cavity (30), and a grille plate (4) is installed in the strip-shaped ventilation slot (2); A ventilation hood (5) with an air inlet (6) at the bottom is slidably mounted on the inner top of the cavity (30). Wherein, the device plate (1) is provided with a reciprocating portion for driving the ventilation cover (5) to slide back and forth along the strip ventilation slot (2).

2. A ventilation device for a farm according to claim 1, characterized in that: The reciprocating part comprises a first reciprocating screw (7) rotatably mounted in the cavity (30), the first reciprocating screw (7) being parallel to the strip ventilation slot (2), the outer wall of the first reciprocating screw (7) being threadedly connected to a slide table (8), the ventilation hood (5) being fixedly connected to the slide table (8), and the outer wall of the device plate (1) being fixedly mounted with a driving motor (9) for driving the first reciprocating screw (7) to rotate.

3. A ventilation device for a farm according to claim 1, characterized in that: A negative pressure fan (23) is fixedly mounted on the outer wall of the device plate (1); a suction end of the negative pressure fan (23) is fixedly connected to a telescopic hose (24); and a terminal end of the telescopic hose (24) is fixedly connected to and communicates with the ventilation hood (5).

4. A ventilation device for a farm according to claim 1, characterized in that: A plurality of air guide plates (11) are rotatably mounted in the strip-shaped ventilation slot (2) via a rotating shaft (10), the rotating shaft (10) being located in the middle of the air guide plates (11), a connecting rod (13) being provided at the lower ends of the plurality of air guide plates (11), the connecting rod (13) being rotatably connected to the lower ends of the air guide plates (11) via a rotating rod (12), a swinging portion for driving the air guide plates (11) to swing back and forth being provided in the cavity (30), and an axial cross-section of the strip-shaped ventilation slot (2) being in the shape of an inverted trapezoid.

5. A ventilation device for a farm according to claim 4, characterized in that: The swinging part comprises a second reciprocating screw (14) rotatably connected to the top of the cavity (30), and a slider (15) is threadedly connected to the outer wall of the second reciprocating screw (14). The slider (15) is slidably connected to the inner wall of the cavity (30), a pull rod (16) is fixedly connected to the lower end of the slider (15), an elastic rope (17) is fixedly connected between the end of the pull rod (16) and the bottom of one of the air guide plates (11), and the ventilation hood (5) is connected to the second reciprocating screw (14) through a linkage part.

6. A ventilation device for a farm according to claim 5, characterized in that: The linkage part includes a drum (18) fixedly mounted on the axial end of the second reciprocating screw (14), a pull rope (19) fixedly wound around the outer wall of the drum (18), the end of the pull rope (19) being fixedly connected to the top of the ventilation hood (5), and a torsion spring being installed between the axial end of the second reciprocating screw (14) and the inner wall of the cavity (30).

7. A ventilation device for a breeding farm according to claim 4, characterized in that: The upper end of the air guide plate (11) is attached to the lower end surface of the grille plate (4), and the lower end surface of the grille plate (4) is fixedly connected with convex blocks (22) arranged at equal intervals. When the air guide plate (11) swings, the top of the air guide plate (11) will sweep over the convex blocks (22). The grille plate (4) is longitudinally slidably installed in the strip ventilation slot (2), and a spring (20) is installed between the lower end of the grille plate (4) and the inner wall of the strip ventilation slot (2).

8. The ventilation equipment for farms according to claim 1, characterized in that: The inner bottom of the cavity (30) is provided with a scraper (21) fixedly connected to the ventilation hood (5), and the axial cross-section of the scraper (21) is in the shape of an isosceles trapezoid.

9. A ventilation device for a farm according to claim 8, characterized in that: Nozzles (25) are fixedly mounted on both sides of the lower end of the ventilation hood (5), and nozzles (26) facing the outer wall of the scraper (21) are fixedly mounted on the outer walls of the two nozzles (25).

10. A ventilation device for a farm according to claim 9, characterized in that: A telescopic airbag (27) is installed between the ventilation hood (5) and the inner wall of the cavity (30); an air intake pipe (29) and an air exhaust pipe (28) which are in communication with the telescopic airbag (27) are fixedly connected to the telescopic airbag (27); a check valve is fixedly installed in each of the air intake pipe (29) and the air exhaust pipe (28); and the end of the air exhaust pipe (28) is fixedly connected to and in communication with the nozzle (25).

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