A ventilation device for an agricultural greenhouse

Abstract

This utility model discloses a ventilation device for agricultural greenhouses, including a fan that delivers fresh air from outside the greenhouse into the greenhouse. The fan is connected to a speed regulator to adjust the wind speed. The device also includes a housing, with its inner side inside the greenhouse and its outer side outside. Stepped grooves are provided on both the inner and outer sides of the housing, and insect-proof netting and a ventilator are fixedly installed on the stepped surfaces of the grooves. The ventilator is detachably installed on the inner side of the housing, with the insect-proof netting located inside the ventilator. A ventilation hole is provided at the center of the ventilator, and the fan is installed at the ventilation hole. This device provides active ventilation and is safer.

Description

Technical Field

[0001] This utility model relates to a ventilation device for agricultural greenhouses. Background Technology

[0002] As a core facility for regulating the crop growth environment, the stability of internal temperature, humidity, and air quality in agricultural greenhouses is crucial to crop health and yield. Ventilation is a key means of maintaining this environment, aiming to introduce fresh air, expel hot and humid waste gases, and regulate the climate inside the greenhouse.

[0003] However, natural ventilation is inefficient, and during operation, the greenhouse film on both sides needs to be rolled up. The exposed openings after rolling up are large, allowing a large number of rodents, insects, and snakes to enter the greenhouse, damaging the plants and posing safety hazards.

[0004] Based on the above problems, we designed a ventilation device for agricultural greenhouses that can provide active ventilation and is safer to operate. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a ventilation device for agricultural greenhouses that can provide active ventilation and is safer to ventilate.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A ventilation device for agricultural greenhouses includes a fan that draws fresh air from outside the greenhouse into the greenhouse. The fan is connected to a speed controller to adjust the airflow. The device also includes...

[0008] The container has its inner side inside the greenhouse and its outer side outside. Both the inner and outer sides of the container have stepped grooves, and insect-proof netting is fixedly installed on the stepped surfaces of these grooves.

[0009] A fan cover is detachably installed on the inner side of the box body. The insect-proof net is located inside the fan cover. A ventilation hole is provided in the center of the fan cover, and the fan is installed at the ventilation hole.

[0010] Preferably, the upper end of the box body is provided with an opening, and a water collection trough is provided on the top of the box body. The water collection trough is U-shaped, and the greenhouse film is fixed in the water collection trough. Multiple drainage holes are provided at the bottom of the water collection trough, corresponding to the upper opening of the box body, so that rainwater collected by the greenhouse film can enter the box body through the drainage holes. Two connecting pipes are provided at the bottom of the outer side of the box body, respectively located at both ends near the box body, to drain the rainwater collected in the box body. When multiple ventilation devices are assembled together, the joints of adjacent water collection troughs are sealed with glue, and sealing plates are inserted into the openings of the water collection troughs at both ends.

[0011] Preferably, a connection hole is provided on the side of the water collection trough facing the inside of the greenhouse, and a fixing screw is screwed into the connection hole after penetrating the greenhouse film.

[0012] Preferably, a baffle is provided inside the housing, the height of which is lower than the height of the stepped groove. A water guide plate is provided inside the housing, the water guide plate being inclined downward toward the baffle. Inside the housing, a wet curtain is supported by the baffle. The lower end of the water guide plate is bent to form a limiting plate, the wet curtain being positioned by the limiting plate, and the water flowing down the water guide plate wetting the wet curtain.

[0013] Preferably, filter cotton is laid at the bottom of the water collection tank.

[0014] The beneficial effects of this utility model are:

[0015] One advantage is that this invention adopts a lateral forced ventilation mode. Users can flexibly choose between forced ventilation or natural micro-ventilation after the fan is turned off, depending on seasonal and weather changes, resulting in high and controllable ventilation efficiency.

[0016] Secondly, this utility model has insect-proof nets fixedly installed in the stepped grooves on both the inside and outside of the box, forming a double physical barrier to prevent insects from entering during ventilation.

[0017] Thirdly, the innovative integration of the water collection trough into the top of the box allows for the collection of all rainwater gathered on the surface of the greenhouse film, achieving natural rainwater collection and making it more environmentally friendly.

[0018] Fourthly, this invention creatively combines a rainwater harvesting system with a wet curtain cooling function. The collected rainwater flows down an inclined guide plate, automatically wetting the wet curtain, which is fixed in place by baffles and limiting plates. When hot, dry air introduced by the fan passes through the water-moistened wet curtain, an evaporative heat absorption reaction occurs, significantly reducing the temperature of the incoming air and increasing its humidity. This process requires no additional energy consumption, providing effective cooling and humidification for greenhouses in hot weather, thus improving the crop growing environment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the assembly of this utility model;

[0021] Figure 2 This is a perspective view of the device;

[0022] Figure 3 This is a diagram illustrating the installation of insect-proof netting.

[0023] Figure 4 This is a cross-sectional view of the device. Detailed Implementation

[0024] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0025] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0026] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The ventilation device shown includes a fan 1, which delivers fresh air from outside the greenhouse into the greenhouse. The fan 1 is connected to a speed controller (not shown) to adjust the wind speed. It also includes...

[0030] The container 3 has its inner side inside the greenhouse and its outer side outside. Both the inner and outer sides of the container 3 are provided with stepped grooves 4, and insect-proof netting 41 is fixedly installed on the stepped surfaces of the stepped grooves 4.

[0031] The fan cover 5 is detachably installed on the inner side of the box 3. The insect-proof net 41 is located inside the fan cover 5. A ventilation hole 55 is provided at the center of the fan cover 5. The fan 1 is installed at the ventilation hole 55.

[0032] The box body 3, the insect net 41, and the wind cover 5 are all made of stainless steel.

[0033] In the above technical solution, the inside and outside of the greenhouse are connected through the box 3. When heat preservation is required, the fan 1 is turned off to maintain natural air circulation. Since the cross-sectional area of ​​the fan 1 is limited, the heat preservation effect of the greenhouse is less affected when air circulation is guaranteed.

[0034] In extremely cold conditions, the air outlet of fan 1 can be covered with plastic wrap to prevent cold air from entering, or a sealing cap can be installed at the air outlet of fan 1 for sealing.

[0035] See Figure 1 and Figure 4As shown, the upper end of the box 3 has an opening, and a water collection trough 6 is provided on the top of the box 3. The water collection trough 6 is U-shaped, and the greenhouse film is fixed in the water collection trough 6. Multiple drainage holes 61 are provided at the bottom of the water collection trough 6, and the drainage holes 61 correspond to the upper opening of the box 3 so that the rainwater collected by the greenhouse film can enter the box through the drainage holes 61. Two connecting pipes 31 are provided at the bottom of the outer side of the box 3, respectively located at the two ends near the box 3, to drain the rainwater collected in the box 3. When multiple ventilation devices are assembled together, the joints of adjacent water collection troughs 6 are sealed with glue, and sealing plates 62 are inserted into the openings of the water collection troughs 6 at both ends.

[0036] In the above technical solution, the water collection trough 6 can be set up to collect the water flowing down from the greenhouse on rainy days. The two adjacent boxes 3 are connected by the cooperation of the hose and the connecting pipe 31. The rainwater on the greenhouse can be stored in the water storage tank by simply connecting the first and last boxes 3 to the water storage tank for later irrigation.

[0037] See Figure 4 As shown, the water collection trough 6 has a connection hole on the side facing the inside of the greenhouse. A fixing screw 661 is screwed into the connection hole, and the fixing screw 661 penetrates the greenhouse film 8 and is screwed into the connection hole.

[0038] In the above technical solution, the fixing screw 661 penetrates the greenhouse film and fixes it. In order to reduce the tearing of the greenhouse film, a rubber gasket can be installed at the contact position between the fixing screw 661 and the greenhouse film to increase the fixing area of ​​the greenhouse film and reduce tearing.

[0039] See Figure 4 As shown, a baffle 331 is provided inside the housing 3. The height of the baffle 331 is lower than the height of the stepped groove. A water guide plate 332 is provided inside the housing 3. The water guide plate 332 is inclined downward towards the baffle 331. Inside the housing 3, a wet curtain 333 is supported by the baffle 331. The lower end of the water guide plate 332 is bent to form a limiting plate 334. The wet curtain 333 is positioned by the limiting plate 334, and the water flowing down the water guide plate 332 wets the wet curtain.

[0040] The above technical solution provides an operation method for wetting the wet curtain 333. Especially when the external temperature is high, water can be actively drained into the water collection tank. After the water in the water collection tank flows down, it wets the wet curtain 333 along the water guide plate 332, which increases the humidity and lowers the temperature of the air brought into the greenhouse by the fan 1, further improving the cooling effect in the greenhouse.

[0041] See Figure 4As shown, filter cotton 66 is laid at the bottom of the water collection tank 6.

[0042] Filter cotton 666 can filter out large particles in rainwater.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ventilation device for agricultural greenhouses, comprising a fan for drawing fresh air from outside the greenhouse into the greenhouse, the fan being connected to a speed regulator for adjusting the airflow, characterized in that... It also includes, The container has its inner side inside the greenhouse and its outer side outside. Both the inner and outer sides of the container have stepped grooves, and insect-proof netting is fixedly installed on the stepped surfaces of these grooves. A fan cover is detachably installed on the inner side of the box body. The insect-proof net is located inside the fan cover. A ventilation hole is provided in the center of the fan cover, and the fan is installed at the ventilation hole.

2. The ventilation device for agricultural greenhouses according to claim 1, characterized in that: The box has an opening at the top and a U-shaped water collection trough at the top. The greenhouse film is fixed inside the trough. Multiple drainage holes are located at the bottom of the trough, corresponding to the opening at the top of the box, so that rainwater collected by the greenhouse film can enter the box through the drainage holes. Two connecting pipes are located at the bottom of the outer side of the box, near the two ends of the box, to drain the rainwater collected inside the box. When multiple ventilation devices are assembled together, the joints of adjacent water collection troughs are sealed with glue, and sealing plates are inserted into the openings of the water collection troughs at both ends.

3. The ventilation device for agricultural greenhouses according to claim 2, characterized in that: A connection hole is provided on the side of the water collection trough facing the inside of the greenhouse. A fixing screw is screwed into the connection hole, and the fixing screw penetrates the greenhouse film and is screwed into the connection hole.

4. The ventilation device for agricultural greenhouses according to claim 3, characterized in that: A baffle is installed inside the housing, the height of which is lower than the height of the stepped groove. A water guide plate is installed inside the housing, and the water guide plate is inclined downward toward the baffle. Inside the housing, a wet curtain is supported by the baffle. The lower end of the water guide plate is bent to form a limiting plate. The wet curtain is positioned by the limiting plate, and the water flowing down the water guide plate wets the wet curtain.

5. The ventilation device for agricultural greenhouses according to claim 4, characterized in that: Filter cotton is laid at the bottom of the water collection tank.

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