Vegetable seedling greenhouse ventilation device

Abstract

The utility model discloses a ventilation device for a vegetable seedling raising shed. An active air inlet mechanism, a passive air inlet mechanism and an air outlet mechanism are arranged on the seedling raising shed. The passive air inlet mechanism comprises a plurality of air inlet pipes, pipe bodies of the air inlet pipes are vertically inserted into the side wall of the seedling raising shed in a sealed mode, air guide assemblies are arranged in the air inlet pipes located outside the seedling raising shed, and pipe openings of the air inlet pipes located outside the seedling raising shed are vertically distributed. A common active ventilation technology is improved, passive ventilation capable of effectively utilizing wind power resources in the natural environment is added, when rich wind power resources exist around the seedling raising greenhouse, active ventilation can be temporarily interrupted, and passive ventilation is carried out on the greenhouse, so that energy consumption is effectively reduced, and cost is reduced. The vegetable seedling raising cost is reduced, an air guide power plate in the air guide assembly can adjust the angle of an air guide plate according to the direction of natural air, and it is avoided that airflow in different directions forms vortexes in an air inlet pipe, and the effective proceeding of the passive ventilation process is disturbed.

Description

Technical Field

[0001] This utility model relates to the field of planting, specifically a ventilation device for vegetable seedling sheds. Background Technology

[0002] Ventilation is crucial for vegetable seedling cultivation, especially when vegetables are grown in hot and humid environments. Proper ventilation helps prevent pests and diseases, improves air circulation, reduces humidity buildup, maintains stable temperatures, and promotes healthy vegetable growth. Therefore, ventilation technology in vegetable seedling greenhouses is a very important technology in modern agriculture, especially in the context of climate change and high-efficiency farming, providing a more stable and favorable environment for vegetable seedling cultivation. Currently, there are various solutions available on the market for this technology, but these solutions are mainly designed around active ventilation. While active ventilation allows for convenient control and adjustment of ventilation status, it also suffers from high energy consumption and cannot effectively utilize the abundant wind resources in the natural environment, thus having certain shortcomings in terms of cleanliness and environmental protection. Utility Model Content

[0003] The purpose of this utility model is to provide a ventilation device for vegetable seedling sheds to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A ventilation device for a vegetable seedling shed, comprising a seedling shed, characterized in that: the seedling shed is provided with an active air intake mechanism, a passive air intake mechanism, and an air outlet mechanism;

[0006] The passive air intake mechanism includes an air intake pipe. The main body of the air intake pipe is vertically and tightly inserted into the side wall of the seedling shed. An air guide component is provided inside the air intake pipe located outside the seedling shed, and the air intake pipe openings located outside the seedling shed are vertically distributed.

[0007] In a further embodiment, the air guiding assembly includes vertically distributed air guiding plates, with vertically distributed rotating shafts at the top and bottom center of the air guiding plates. The air guiding plates are rotatably connected to the air inlet pipe cavity via the rotating shafts. An air guiding power plate is provided at the top of the air inlet pipe, with a vertically distributed power rotating shaft fixed at the bottom center of the air guiding power plate. The power rotating shaft is rotatably connected to the air inlet pipe and passes through the side wall of the air inlet pipe, coaxially and fixedly connected to the rotating shaft at the top of the air guiding plate. The air guiding power plate and the air guiding plates are perpendicular to each other.

[0008] In a further embodiment, there are no fewer than two air guide plates, the power shaft is coaxially and fixedly connected to the top shaft of one of the air guide plates, the air guide plates are parallel to each other, and the air guide plates (3) are vertically and rotatably connected to a horizontal linkage.

[0009] In a further embodiment, the power shaft is an elastic shaft.

[0010] In a further embodiment, the active air intake mechanism includes an air intake fan located inside an air intake pipe outside the seedling shed and inside a guide plate.

[0011] In a further embodiment, an air intake fan start switch is also provided on the top of the air intake pipe located outside the seedling shed, and the air intake fan start switch is an anemometer.

[0012] In a further embodiment, the air outlet mechanism includes several air outlet pipes, the main body of which is vertically and tightly inserted into the side wall of the seedling shed, and a one-way airflow component is fitted onto the outlet of the air outlet located outside the seedling shed.

[0013] In a further embodiment, the unidirectional airflow assembly is a soft sleeve with one end hanging freely and closed.

[0014] In a further embodiment, a filter screen is provided on the air inlet pipe located inside the seedling shed.

[0015] In a further embodiment, the bottom surfaces of the air inlet pipe and air outlet pipe located outside the seedling shed are connected to support columns, and the ends of the support columns are fixed to the ground.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] I. This utility model improves upon conventional active ventilation technology by adding passive ventilation that can effectively utilize wind resources in the natural environment. When there are abundant wind resources around the seedling shed, active ventilation can be temporarily interrupted and passive ventilation can be switched to the shed, thereby effectively reducing energy consumption and lowering the cost of vegetable seedling cultivation.

[0018] Second, the passive ventilation in this utility model adopts an air guide component that can guide the air according to the direction of the ambient wind. The air guide power plate in the air guide component can adjust the angle of the air guide plate according to the direction of the stronger airflow in the natural wind, so that the air guide plate can smoothly introduce the stronger airflow into the air inlet pipe, avoiding the formation of vortices in the air inlet pipe by airflows from different directions, which would interfere with the effective operation of the passive ventilation process.

[0019] Third, the active ventilation in this utility model uses an anemometer as a switch. When the wind speed is high and active ventilation is not required, the blades on the anemometer rotate rapidly, and the control center determines that active ventilation is not required. Conversely, when the anemometer blades rotate slowly, the control center can effectively determine that the wind speed is too low to allow passive ventilation, and thus promptly initiate active ventilation. This process can freely determine whether active ventilation needs to be turned on based on the ambient wind speed, which is flexible, convenient, and relatively intelligent.

[0020] Fourth, the air inlet pipe of this utility model is equipped with a filter screen, which can effectively prevent external debris from entering the seedling shed; the air outlet pipe is fitted with a soft sleeve, which can prevent external airflow from entering the seedling shed without affecting the air outlet, thereby effectively maintaining the airflow path in the seedling shed and achieving sufficient ventilation in the seedling shed. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the external structure of the seedling shed of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the seedling shed of this utility model.

[0023] In the diagram: 1. Seedling shed; 2. Air inlet duct; 3. Air guide plate; 4. Air guide power plate; 5. Power shaft; 6. Horizontal linkage crossbar; 7. Air intake fan; 8. Anemometer; 9. Air outlet duct; 10. Soft sleeve; 11. Filter screen; 12. Support column. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] like Figure 1-2 As shown, a ventilation device for a vegetable seedling shed includes a seedling shed 1, which is equipped with an active air intake mechanism, a passive air intake mechanism, and an air outlet mechanism. The passive air intake mechanism includes an air intake pipe 2, the main body of which is vertically and tightly inserted into the side wall of the seedling shed 1. An air guide assembly is provided inside the air intake pipe 2 located outside the seedling shed 1, and the openings of the air intake pipe 2 located outside the seedling shed 1 are vertically distributed. The air guide assembly includes vertically distributed air guide plates 3, with vertically distributed rotating shafts at the top and bottom center of the air guide plates 3. The air guide plates 3 are rotatably connected to the cavity of the air intake pipe 2 via the rotating shafts. An air guide power plate 4 is provided at the top of the air intake pipe 2, and a vertically distributed power rotating shaft 5 is fixed at the bottom center of the power guide plate 4. The power rotating shaft 5 is rotatably connected to the air intake pipe 2, and the power rotating shaft 5 passes through the side wall of the air intake pipe 2 and is coaxially and fixedly connected to the rotating shaft at the top of the air guide plate 3. The power guide plate 4 and the air guide plate 3 are perpendicular to each other. There are at least two air guide plates 3. The power shaft 5 is coaxially and fixedly connected to the top shaft of one of the air guide plates 3. The air guide plates 3 are parallel to each other, and a horizontal linkage crossbar 6 is vertically and rotatably connected to each other on the air guide plates 3. The power shaft 5 is an elastic shaft.

[0027] Among them, the air inlet pipe 2 located inside the seedling shed 1 is equipped with a filter screen 11.

[0028] The active air intake mechanism includes an air intake fan 7, which is located inside the air intake pipe 2 outside the seedling shed 1 and inside the air guide plate 3. An air intake fan start switch, which is an anemometer 8, is also provided on the top of the air intake pipe 2 outside the seedling shed 1.

[0029] The air outlet mechanism includes several air outlet pipes 9. The main body of the air outlet pipes 9 is vertically and sealed through the side wall of the seedling shed 1, and a one-way airflow component is fitted onto the outlet of the air outlet pipes 9 located outside the seedling shed 1. The one-way airflow component is a soft sleeve 10 with one end hanging down and closed.

[0030] Among them, the bottom surfaces of the air inlet pipe 2 and the air outlet pipe 9 located outside the seedling shed 1 are both connected to support columns 12, and the ends of the support columns 12 are fixed to the ground.

[0031] During use, the anemometer 8 continuously measures the outside wind speed. When there is sufficient wind, the intake fan 7 is turned off for passive ventilation. When the wind blows the wind-guiding plate 4, the wind-guiding plate 4 will rotate in the direction of the stronger airflow, thereby driving one of the wind guide plates 3 to rotate together through the elastic power shaft 5. This wind guide plate 3, in turn, drives the other wind guide plates 3 to rotate in one direction through the horizontal linkage bar 6. Since the wind guide plates 3 and the wind-guiding plate 4 always remain perpendicular to each other, the wind-guiding plate 4 will rotate under the limitation of the elastic power shaft 5 and the horizontal linkage bar 6. The airflow is moved to a position that is as close as possible to perpendicular to the direction of the airflow (to add a note, the horizontal linkage 6, in addition to linking multiple air guide plates 3, also limits the maximum rotation angle of the air guide plates 3, thus restricting the maximum rotation angle of the power shaft 5, and ultimately limiting the maximum rotation angle of the air guide power plate 4). The multiple air guide plates 3 are then driven to rotate to a position that is as close as possible to parallel to the direction of the airflow, allowing the airflow in that direction to smoothly enter the air inlet duct 2. This prevents two airflows from entering the air inlet duct 2 simultaneously, forming vortices that cause energy dissipation and reduce passive ventilation efficiency. When external wind resources are insufficient, the elastic power shaft 5 will cause the air guide power plate 4 to rotate back to its initial position. The air guide power plate 4 in its initial position remains parallel to the opening of the air inlet duct 2. When the anemometer 8 measures insufficient wind, the intake fan 7 is activated to actively ventilate the seedling shed 1. In addition, since the soft sleeve 10 on the air outlet 9 is fitted onto the pipe opening located outside the seedling shed 1, it does not affect the exhaust of airflow inside the seedling shed 1. However, when the external airflow blows toward the pipe opening of the air outlet 9, the soft sleeve 10 will naturally fold and close due to the wind force, thus achieving a good one-way ventilation effect.

[0032] This embodiment improves upon conventional active ventilation technology by adding passive ventilation that can effectively utilize wind resources in the natural environment. When there are abundant wind resources around the seedling shed 1, active ventilation can be temporarily interrupted and passive ventilation can be used instead, thereby effectively reducing energy consumption and reducing the cost of vegetable seedling cultivation.

[0033] In this embodiment, the passive ventilation adopts an air guide component that can guide the air according to the ambient wind direction. The air guide power plate 4 in the air guide component can adjust the angle of the air guide plate 3 according to the direction of the stronger airflow in the natural wind, so that the air guide plate 3 can smoothly introduce the stronger airflow into the air inlet pipe 2, avoiding the formation of vortices in the air inlet pipe 2 by airflows from different directions, which would interfere with the effective operation of the passive ventilation process.

[0034] In this embodiment, the active ventilation uses an anemometer 8 as a switch. When the wind speed is high and active ventilation is not required, the blades on the anemometer 8 rotate rapidly, and the control center determines that active ventilation is not required. Conversely, when the blades on the anemometer 8 rotate slowly, the control center can effectively determine that the wind speed is too low to allow passive ventilation, and thus promptly initiate active ventilation. This process can freely determine whether active ventilation needs to be turned on based on the ambient wind speed, making it flexible, convenient, and relatively intelligent.

[0035] In this embodiment, the air inlet pipe is equipped with a filter screen 11, which can effectively prevent external debris from entering the seedling shed 1; the air outlet pipe 9 is fitted with a soft sleeve 10, which can prevent external airflow from entering the seedling shed 1 without affecting the air outlet, thereby effectively maintaining the ventilation airflow path in the seedling shed 1 and achieving sufficient ventilation in the seedling shed 1.

[0036] In this embodiment, as Figure 1-2 As shown, to clearly illustrate all the structures, the seedling shed 1 has been simplified, retaining only the side wall on which this embodiment is installed; the rest of the seedling shed 1 remains consistent with the seedling shed 1 in the prior art. In practical use, this embodiment is generally installed on multiple side walls of the seedling shed 1 to achieve omnidirectional passive ventilation.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ventilation device for a vegetable nursery house, comprising a nursery house (1), characterized in that: The seedling raising shed (1) is provided with an active air inlet mechanism, a passive air inlet mechanism and an air outlet mechanism. The passive air inlet mechanism comprises an air inlet pipe (2), the pipe body of the air inlet pipe (2) is vertically and tightly inserted into the side wall of the seedling raising shed (1), and the air inlet pipe (2) outside the seedling raising shed (1) is provided with a wind guide assembly, and the air inlet pipe (2) outside the seedling raising shed (1) is vertically distributed.

2. The vegetable nursery house ventilation device according to claim 1, characterized in that: The wind guide assembly comprises vertically distributed wind guide plates (3), the wind guide plates (3) are vertically provided with rotating shafts at the top and bottom, and the wind guide plates (3) are rotationally connected to the pipe cavity of the air inlet pipe (2) through the rotating shafts; the outer top of the air inlet pipe (2) is provided with a wind guide power plate (4), the bottom of the wind guide power plate (4) is vertically provided with a power rotating shaft (5), the power rotating shaft (5) is rotationally connected to the air inlet pipe (2), and the power rotating shaft (5) penetrates the side wall of the air inlet pipe (2) and is fixedly connected to the top rotating shaft of the wind guide plate (3) in a coaxial manner, and the wind guide power plate (4) is perpendicular to the wind guide plate (3).

3. The vegetable nursery house ventilation device according to claim 2, wherein: The number of the wind guide plates (3) is not less than two, the power rotating shaft (5) is fixedly connected to the top rotating shaft of one of the wind guide plates (3) in a coaxial manner, the wind guide plates (3) are parallel to each other, and the wind guide plates (3) are vertically and rotationally connected to a horizontal linkage cross rod (6).

4. The vegetable nursery house ventilation device according to claim 2, wherein: The power rotating shaft (5) is an elastic rotating shaft.

5. The vegetable nursery house ventilation device according to claim 2, wherein: The active air inlet mechanism comprises an air inlet fan (7), the air inlet fan (7) is located in the air inlet pipe (2) outside the seedling raising shed (1), and the air inlet fan (7) is located on the inner side of the wind guide plate (3).

6. The vegetable nursery house ventilation device according to claim 5, wherein: The outer top of the air inlet pipe (2) outside the seedling raising shed (1) is also provided with an air inlet fan starting switch, and the air inlet fan starting switch is an anemometer (8).

7. The vegetable nursery house ventilation device according to claim 1, wherein: The air outlet mechanism comprises a plurality of air outlet pipes (9), the pipe body of the air outlet pipe (9) is vertically and tightly inserted into the side wall of the seedling raising shed (1), and a one-way air flow assembly is sleeved on the pipe opening of the air outlet pipe (9) outside the seedling raising shed (1).

8. The vegetable nursery house ventilation device according to claim 7, wherein: The one-way air flow assembly is a soft sleeve (10) with one end freely hanging and closed.

9. The vegetable nursery house ventilation device according to claim 1, wherein: The pipe opening of the air inlet pipe (2) inside the seedling raising shed (1) is provided with a filter screen (11).

10. The vegetable nursery house ventilation device according to claim 7, wherein: The bottom surfaces of the air inlet pipe (2) and the air outlet pipe (9) outside the seedling raising shed (1) are both connected with support columns (12), and the ends of the support columns (12) are fixed to the ground.

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