Ventilation structure of tobacco seedling greenhouse

Abstract

The utility model relates to the technical field of tobacco seedling raising, in particular to a ventilation structure of a tobacco seedling raising greenhouse, which comprises a greenhouse main body, an opening and closing door, support frames, a filter assembly and a maintenance assembly, the greenhouse main body is rotatably connected with the opening and closing door through hinges, parallel ventilation openings are formed in the greenhouse main body, and the number of the support frames corresponds to that of the ventilation openings. The supporting frame is connected to the ventilation opening, the filtering assembly is connected to the supporting frame, and the maintenance assembly is connected to the supporting frame. According to the utility model, the cleaning end in the maintenance assembly vertically moves to the filtering assembly along with the maintenance assembly to be in contact with the filtering assembly to clean the filtering assembly, the cleaning end rotates to be in contact with the water body and rotates after cleaning is completed, and dust attached to the surface of the cleaning end is cleaned through mutual friction with the water body; the cleaning end can make contact with the baffle in the water body to increase friction and enhance the cleaning effect, and meanwhile the problem that dust flies to pollute the filtering end or the filtering net again when the dust on the cleaning end is cleaned is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco seedling cultivation, in particular to a ventilation structure of a tobacco seedling cultivation greenhouse. Background Art

[0002] The floating seedling cultivation method used in greenhouses provides a crucial support for intensive tobacco seedling cultivation. This method involves floating trays filled with a growing medium for tobacco seedlings on the water surface. Seeds are sown in the medium, where the seedlings take root and grow, absorbing water and nutrients from the medium and the waterbed.

[0003] Chinese patent publication number CN220755998U discloses a ventilation structure for a tobacco floating seedling greenhouse. The structure comprises a seedling pool covered by the greenhouse and vents formed on a trellis supporting the greenhouse. The vents are provided with a ventilation device, comprising a ventilation fan fixedly connected to the inner wall of the vent, a filter mechanism fixedly connected to the air inlet end of the ventilation fan, and a dust removal mechanism mounted on the end of the filter mechanism facing away from the ventilation fan. This utility model has a simple structure and improves upon the ventilation of existing seedling greenhouses. It effectively ensures ventilation and air cleanliness in the greenhouse, enhancing the ventilation efficiency of existing tobacco floating seedling greenhouses and ensuring a healthy seedling environment.

[0004] However, in the above technical solution, the filter belt is driven to move only by the rotation of the two tensioning rollers, so that the filter belt and the cleaning roller scrape each other to clean the dust on the filter belt and maintain its filtering effect. However, the bristles on the cleaning roller will adhere to and attract the dust after cleaning the filter belt. During the next cleaning, the dust on the bristles will adhere to the filter belt again. The static electricity generated by friction will also cause the dust to adhere to the brush of the cleaning roller, so that its cleaning effect will gradually decrease with the increase of usage time and number of times. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a ventilation structure for a tobacco seedling greenhouse.

[0006] The technical solution of the utility model is as follows: a ventilation structure for a tobacco seedling greenhouse, comprising a greenhouse main body, which is rotatably connected to a switch door, and parallel ventilation openings are opened on the greenhouse main body; support frames, the number of which corresponds to the ventilation openings, and the support frames are connected to the ventilation openings; a filter assembly, which is connected to the support frame; in the initial state of the filter assembly, the two filter ends of the filter assembly are in a parallel state to block the ventilation openings; a maintenance assembly, which is connected to the support frame; when the maintenance assembly is in use, the cleaning end of the maintenance assembly moves in a vertical direction and rotates during the movement.

[0007] Preferably, the filter assembly includes a driving device, which is connected to the support frame, and the output end of the driving device is connected to the output shaft; two support shafts are arranged in parallel, and both ends of the support shafts are rotatably connected to the support frame, and the two support shafts are connected to symmetrically arranged synchronous pulleys, and one end of the support shaft is connected to the output shaft; a synchronous toothed belt, which is sleeved on the outside of the synchronous pulley, and the synchronous toothed belt is meshed with the synchronous pulley for transmission connection, and two notches are provided on the synchronous toothed belt; a filter screen is connected to the notch on the synchronous toothed belt; a water tank is connected to the support frame, and an opening is provided on the water tank.

[0008] Preferably, the maintenance component includes two telescopic devices, which are arranged in parallel and connected to both sides of the water tank, and the telescopic ends of the telescopic devices are connected to the moving block; a cleaning roller, both ends of which are rotatably connected to the moving block, and the cleaning roller is in contact with the filter screen; two first gears, which are arranged in parallel and connected to both ends of the cleaning roller; a first rack, the number of which corresponds to the first gear, the first rack is connected to the water tank, and the first rack is meshed with the first gear for transmission connection; a cleaning plate, both ends of which are connected to the first rack.

[0009] Preferably, the cleaning plate is composed of a frame and a plurality of support rods. The frame is connected to the water tank. The plurality of support rods are connected to the frame. The support rods are each connected with a plurality of comb teeth.

[0010] Preferably, the output shaft is connected to a driving gear, and the driving gear is meshed and transmission-connected with the first gear.

[0011] Preferably, a plurality of baffles are connected to the water tank, and the baffles divide the water tank into a plurality of storage cavities.

[0012] Preferably, the water tank is provided with parallel dovetail grooves, the support frame is connected with a dovetail block corresponding to the dovetail groove, and the dovetail block is slidably connected to the dovetail groove.

[0013] Preferably, the support frames are connected with grilles, and the grilles are detachably connected to the support frames.

[0014] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0015] In the utility model, the cleaning end in the maintenance component moves vertically to the filter component and contacts the filter component to clean it. After cleaning is completed, the cleaning end rotates to contact and rotate with the water body, and cleans the dust attached to its surface through mutual friction with the water body. At the same time, the cleaning end will contact the baffle in the water body to increase friction and enhance the cleaning effect, while avoiding the problem of dust on the cleaning end flying and polluting the filter end or the filter screen again when cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a three-dimensional diagram of the utility model;

[0017] Figure 2 Schematic diagram of the local structure of the maintenance component;

[0018] Figure 3 Schematic diagram of the water tank structure;

[0019] Figure 4 for Figure 3 A magnified view of the structure at point A;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the maintenance component.

[0021] Figure numerals: 1. Greenhouse main body; 2. Opening and closing door; 3. Ventilation port; 4. Support frame; 5. Driving device; 6. Output shaft; 7. Support shaft; 8. Synchronous pulley; 9. Synchronous toothed belt; 10. Filter; 11. Water tank; 12. Telescopic device; 13. Moving block; 14. Cleaning roller; 15. First gear; 16. First rack; 17. Cleaning plate; 18. Frame; 19. Support rod; 20. Comb teeth; 21. Driving gear; 22. Baffle; 23. Dovetail groove; 24. Dovetail block; 25. Grille. DETAILED DESCRIPTION

[0022] Example 1

[0023] like Figure 1-Figure 5 As shown, the utility model proposes a ventilation structure for a tobacco seedling greenhouse, including a greenhouse main body 1, a switch door 2, a support frame 4, a filter assembly and a maintenance assembly. The greenhouse main body 1 is hinged and rotated to connect the switch door 2. Parallel ventilation holes 3 are opened on the greenhouse main body 1. The number of support frames 4 corresponds to the ventilation holes 3. The support frames 4 are connected to the ventilation holes 3, and the filter assembly is connected to the support frames 4; in the initial state of the filter assembly, the two filter ends of the filter assembly are in a parallel state to block the ventilation holes 3; the maintenance assembly is connected to the support frame 4; when the maintenance assembly is in use, the cleaning end of the maintenance assembly moves in a vertical direction and rotates during the movement.

[0024] Example 2

[0025] like Figure 1 、 Figure 2 、 Figure 5As shown, the ventilation structure of a tobacco seedling greenhouse proposed by the present invention, compared with Example 1, the detailed structure of the filter assembly is recorded in this embodiment, the filter assembly includes a driving device 5, an output shaft 6, a support shaft 7, a synchronous pulley 8, a synchronous toothed belt 9 and a filter screen 10, the driving device 5 is connected to the support frame 4, and the output end of the driving device 5 is connected to the output shaft 6; the driving device 5 is selected from but not limited to a motor, and a stepping motor and a servo motor can be selected to control the accurate position of the filter screen 10; two support shafts 7 are arranged in parallel, and both ends of the support shaft 7 are rotatably connected to the support frame 4, and the two support shafts 7 are connected with symmetrically arranged synchronous pulleys 8, and the synchronous toothed belt 9 is sleeved on the outside of the synchronous pulley 8, and the synchronous toothed belt 9 is meshed with the synchronous pulley 8 for transmission connection, and two notches are provided on the synchronous toothed belt 9, and the filter screen 10 is connected to the notches on the synchronous toothed belt 9; the filter screen 10 is made of a flexible material.

[0026] Example 2

[0027] like Figure 2-Figure 5 As shown, the ventilation structure of a tobacco seedling greenhouse proposed by the present invention, compared with the embodiment 1, the detailed structure of the maintenance component is recorded in this embodiment, and the maintenance component includes a water tank 11, a telescopic device 12, a moving block 13, a cleaning roller 14, a first gear 15, a first rack 16 and a cleaning plate 17. The water tank 11 is connected to the support frame 4, and an opening is provided on the water tank 11; two symmetrical handles are connected to the water tank 11, and an inclined cover is provided above the water tank 11 to prevent large impurities from falling into it; two telescopic devices 12 are arranged in parallel, and the telescopic devices 12 are connected to the support frame 4. Connected to both sides of the water tank 11, the telescopic end of the telescopic device 12 is connected to the moving block 13; the telescopic device 12 can be selected from but not limited to a hydraulic cylinder, and the hydraulic cylinder is waterproof; both ends of the cleaning roller 14 are rotatably connected to the bearings of the moving block 13, and the cleaning roller 14 is in contact with the filter 10; two first gears 15 are provided in parallel, and the first gears 15 are connected to both ends of the cleaning roller 14; the number of first racks 16 corresponds to the number of first gears 15, and the first racks 16 are connected to the water tank 11, and the first racks 16 are meshed and transmission-connected with the first gear 15, and the two ends of the cleaning plate 17 are connected to the first racks 16;

[0028] In an optional embodiment, the cleaning plate 17 is composed of a frame 18 and a plurality of support rods 19. The frame 18 is connected to the water tank 11. The plurality of support rods 19 are connected to the frame 18. The support rods 19 are each connected to a plurality of comb teeth 20. When the comb teeth 20 come into contact with the cleaning roller 14, they penetrate deep into the bristles of the cleaning roller 14 to improve the cleaning effect.

[0029] In an optional embodiment, the cleaning roller 14 is connected to a first gear 15 at one end close to the driving device 5, and the output shaft 6 is connected to a driving gear 21 that is meshed and transmission-connected with the first gear 15;

[0030] In an optional embodiment, a plurality of baffles 22 are connected to the water tank 11, and the baffles 22 divide the water tank 11 into a plurality of storage cavities. After the baffles 22 divide the water tank 11, the stability of the water body is enhanced to prevent dust settled at the bottom of the water tank 11 from being stirred up when the cleaning roller 14 rotates.

[0031] In an optional embodiment, a dovetail groove 23 arranged in parallel is opened on the water tank 11 , and a dovetail block 24 corresponding to the dovetail groove 23 is connected to the support frame 4 , and the dovetail block 24 is slidably connected to the dovetail groove 23 .

[0032] In an optional embodiment, a grille 25 is connected to the support frame 4, and the grille 25 is detachably connected to the support frame 4; the grille 25 is connected to the support frame 4 by bolts, and the grille 25 is used to block larger debris or plastic bags flying in the air to prevent them from entering the vent 3 and contacting the filter 10.

[0033] In summary, when the utility model is used, when the greenhouse main body 1 needs to be ventilated, the fan on the greenhouse main body 1 is turned on to attract external air from the vent 3 into the support frame 4. The air will pass through the filter 10 to remove dust and debris in the air and reduce its impact on tobacco seedling cultivation. Larger debris flying in the air will be blocked by the grille 25 before entering the filter 10 to prevent it from adhering to the filter 10. When the filter 10 needs to be cleaned after working for a certain period of time, the driving device 5 is started, and the output end of the driving device 5 rotates to drive the output shaft 6 to rotate. The output shaft 6 drives the synchronous pulley 8 on the support shaft 7 to rotate and drive the synchronous toothed belt 9 to rotate. The filter 10 on the synchronous toothed belt 9 moves, so that the filter 10 at the rear gradually moves to the front, so that the positions of the two filters 10 are exchanged. While the filter 10 moves, the driving gear 21 on the support shaft 7 will mesh with the first gear 15, thereby driving the cleaning The roller 14 rotates on the moving block 13, and through its rotation, it scrapes against the filter screen 10 to clean the dust. After the cleaning is completed, the telescopic device 12 is started. The telescopic end of the telescopic device 12 drives the moving block 13 to move vertically, driving the cleaning roller 14 into the water tank 11. The rotatable characteristic of the cleaning roller 14 makes it impossible for the driving gear 21 to block the first gear 15. The first gear 15 moves down and contacts the first rack 16. The engagement of the two causes the cleaning roller 14 to be driven by the first gear 15 to rotate during the downward movement. The rotation of the cleaning roller 14 eliminates the collision between its bristles and the support rod 19 and the comb teeth 20 to remove dust. At the same time, the dust is removed by the friction between the water and the bristles. The baffle 22 set in the water tank 11 can reduce the impact of the shaking caused by the rotation of the cleaning roller 14 on the water. The staff can place medicine in the water tank 11 in advance or accelerate the condensation and precipitation of dust. After cleaning is completed, the cleaning roller 14 returns to its original position and waits for the next work.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A ventilation structure for a tobacco seedling greenhouse, characterized in that: include A greenhouse main body (1) is rotatably connected to a switch door (2), and parallel ventilation openings (3) are provided on the greenhouse main body (1); Support frames (4), the number of which corresponds to the number of vents (3), and the support frames (4) are connected to the vents (3); A filter assembly is connected to the support frame (4); in the initial state of the filter assembly, the two filter ends of the filter assembly are in a parallel state to block the vent (3); The maintenance component is connected to the support frame (4); when the maintenance component is in use, the cleaning end of the maintenance component moves in a vertical direction and rotates during the movement.

2. The ventilation structure of a tobacco seedling greenhouse according to claim 1, characterized in that: Filter components include A driving device (5) is connected to the support frame (4), and an output shaft (6) is connected to the output end of the driving device (5); Two support shafts (7) are arranged in parallel, both ends of the support shafts (7) are rotatably connected to the support frame (4), both support shafts (7) are connected to symmetrically arranged synchronous pulleys (8), and one end of the support shaft (7) is connected to the output shaft (6); A synchronous toothed belt (9) is sleeved on the outside of the synchronous pulley (8), the synchronous toothed belt (9) is meshed with the synchronous pulley (8) for transmission connection, and two notches are provided on the synchronous toothed belt (9); A filter screen (10) connected to a notch on the synchronous toothed belt (9); A water tank (11) is connected to the support frame (4), and an opening is provided on the water tank (11).

3. The ventilation structure of a tobacco seedling greenhouse according to claim 2, characterized in that: Maintenance kit includes Two telescopic devices (12) are provided in parallel. The telescopic devices (12) are connected to both sides of the water tank (11). The telescopic ends of the telescopic devices (12) are connected to moving blocks (13); A cleaning roller (14), both ends of which are rotatably connected to the moving block (13), and the cleaning roller (14) is in contact with the filter screen (10); Two first gears (15) are arranged in parallel, and the first gears (15) are connected to both ends of the cleaning roller (14); The number of first racks (16) corresponds to the number of first gears (15), the first racks (16) are connected to the water tank (11), and the first racks (16) are meshed and connected to the first gears (15); The cleaning plate (17) has two ends connected to the first rack (16).

4. The ventilation structure of a tobacco seedling greenhouse according to claim 3, characterized in that: The cleaning plate (17) is composed of a frame (18) and a plurality of support rods (19). The frame (18) is connected to the water tank (11). The plurality of support rods (19) are connected to the frame (18). The support rods (19) are each connected with a plurality of comb teeth (20).

5. The ventilation structure of a tobacco seedling greenhouse according to claim 3, characterized in that: The output shaft (6) is connected to a driving gear (21), and the driving gear (21) is meshed with the first gear (15) for transmission connection.

6. The ventilation structure of a tobacco seedling greenhouse according to claim 2, characterized in that: A plurality of baffles (22) are connected to the water tank (11), and the baffles (22) divide the water tank (11) into a plurality of storage cavities.

7. The ventilation structure of a tobacco seedling greenhouse according to claim 2, characterized in that: The water tank (11) is provided with a dovetail groove (23) arranged in parallel, and a dovetail block (24) corresponding to the dovetail groove (23) is connected to the support frame (4), and the dovetail block (24) is slidably connected to the dovetail groove (23).

8. The ventilation structure of a tobacco seedling greenhouse according to claim 1, characterized in that: The support frames (4) are all connected with grilles (25), and the grilles (25) are detachably connected to the support frames (4).

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