Ventilation device of greenhouse

Abstract

The utility model relates to the technical field of greenhouses, and discloses a greenhouse ventilation device which comprises a greenhouse, a ventilation frame is fixedly connected to the top of the greenhouse, a movable closing mechanism is arranged on the front face of the ventilation frame, a shielding mechanism is arranged on the back of the ventilation frame, a filter plate is inserted into the ventilation frame, and the filter plate is fixedly connected with the ventilation frame. A first motor is started through an arranged movable closing mechanism, then a first closing plate is synchronously driven to rotate, a synchronous rod is synchronously pulled to move in the rotating process of a first rotating rod, the synchronous rod synchronously drives and pulls a second rotating rod to rotate with a ventilation frame connecting point as the axis, and then a second closing plate is synchronously driven to rotate; the first closing plate and the second closing plate rotate synchronously until ventilation openings of the ventilation frames on the left side and the right side are closed, so that the indoor temperature is further prevented from being affected by the outside, crop growth is further prevented from being affected, the ventilation openings can be further closed in cold current attack or strong wind weather, and crops are prevented from being frozen.

Description

TECHNICAL FIELD

[0001] The utility model relates to a greenhouse technical field, concretely is a ventilation device of greenhouse. BACKGROUND

[0002] Greenhouse as an important facility in agricultural production, its internal environment is crucial to the growth of crops. Ventilation is one of the important means of adjusting the internal environment of greenhouse, which can effectively reduce the temperature, remove moisture, regulate air composition (such as increasing carbon dioxide concentration), thus creating a suitable environment for crop growth.

[0003] According to the ventilation device of greenhouse disclosed by patent network (authorization announcement number CN 219981662U) described in the "a ventilation device of greenhouse, including greenhouse, the top of greenhouse is installed with photovoltaic board, and the bottom inner wall of greenhouse is installed with distribution box, the top center of greenhouse is installed with several ventilation components along the horizontal direction on equal distance;The ventilation component includes ventilation duct fixedly installed in the top of greenhouse along the vertical direction, the bottom of ventilation duct extends to the inside of greenhouse, and the top edge of ventilation duct is located outside the fixed connection of greenhouse Metal net rack".

[0004] For the above description, the applicant thinks that there are the following problems:

[0005] The utility uses in the process, the air in the greenhouse enters the ventilation duct, the filter screen is set first to filter the air, avoid some lint or other impurities into the ventilation duct, then, the air is adsorbed and purified from the metal net rack after the activated carbon core rod, but in the actual use process, because the weather outside the greenhouse is complex and changeable, and because the ventilation opening of the device cannot be closed, the temperature in the shed is greatly affected by the external environment, and the temperature can be too low or too high, which is not conducive to crop growth, especially in extreme weather conditions, such as cold wave or gale, if the ventilation opening is not closed in time, the crops may be frozen, so it is necessary to improve a ventilation device of greenhouse. INVENTION CONTENTS

[0006] The utility model aims at providing a ventilation device of greenhouse to solve the problems in the above background.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a ventilation device of greenhouse, including greenhouse, the greenhouse top is connected with ventilation frame, the ventilation frame front is provided with mobile closing mechanism, the ventilation frame back is provided with shielding mechanism, the ventilation frame inside is inserted with filter plate, the filter plate and ventilation frame between are inserted with bolt, the ventilation frame inside is fixedly connected with activated carbon filter plate, the ventilation frame inside is fixedly connected with negative pressure fan;

[0008] The mobile closing mechanism comprises a moving assembly and a closing assembly, and the closing assembly is arranged at the back of the moving assembly.

[0009] The moving assembly comprises a fixed frame, the fixed frame is fixedly connected to the front of the ventilation frame, a motor one is fixedly connected to the inner side of the front of the fixed frame, a screw rod is fixedly connected to the output end of the motor one, a threaded block is threadedly connected to the outer side of the screw rod, a slide rail is fixedly connected to the inner side of the front of the threaded frame, and a net rack is fixedly connected to the left and right sides of the ventilation frame.

[0010] Preferably, grooves are formed at the corresponding positions of the slide rail and the threaded block, and the threaded block is slidably connected in the groove, so as to limit the movement of the threaded block.

[0011] Preferably, holes are formed at the corresponding positions of the fixed frame and the screw rod, and the screw rod is rotatably connected in the hole, so as to stably rotate the screw rod.

[0012] Preferably, the closing assembly comprises a first rotating rod, the first rotating rod is rotatably connected to the front of the threaded block, a rotating rod one is rotatably connected to the end of the first rotating rod away from the threaded block, a closing plate one is rotatably connected to the back of the rotating rod one, a synchronous rod is rotatably connected to the end of the rotating rod one away from the first rotating rod, a rotating rod two is drivingly connected to the end of the synchronous rod away from the rotating rod one, and a closing plate two is rotatably connected to the back of the rotating rod two, so as to open or close the ventilation opening of the ventilation frame.

[0013] Preferably, the closing plate one is rotatably connected in the inside of the ventilation frame, and the closing plate two is rotatably connected in the inside of the ventilation frame, so as to synchronously drive the closing plate one and the closing plate two to rotate.

[0014] Preferably, the shielding mechanism comprises a connecting frame, the connecting frame is fixedly connected to the back of the ventilation frame, a motor two is fixedly connected to the inside of the connecting frame, a gear one is fixedly connected to the output end of the motor two, a gear two is engaged on the left side of the gear one, and a shielding plate is fixedly connected to the front of the gear two, so as to adjust the shielding position according to requirements.

[0015] Preferably, the shielding plate is rotationally connected to the front and rear inner sides of the ventilation frame, and the gear two is rotationally connected to the inside of the connecting frame, so as to facilitate synchronous rotation of the shielding plate.

[0016] Compared with the prior art, the greenhouse ventilation device has the following beneficial effects:

[0017] 1. The greenhouse ventilation device, by setting the moving closing mechanism, starting the motor one, in turn synchronously driving the closing plate one to rotate, and synchronously pulling the synchronous rod to move in the rotating rod one rotating process, so that the synchronous rod synchronously drives the rotating rod two to rotate around the ventilation frame connection point, in turn synchronously driving the closing plate two to rotate, so that the closing plate one and the closing plate two rotate synchronously, until the left and right ventilation frame air vents are closed, thereby further avoiding the indoor temperature from being affected by the outside world, thereby avoiding affecting the growth of crops, and further closing the air vents in cold wave or windy weather, to avoid causing crop freezing damage.

[0018] 2. The greenhouse ventilation device, by setting the shielding mechanism, starting the motor two, thereby driving the shielding plate to rotate by the gear two, so that the shielding plate adjusts the appropriate shielding position according to the requirement, thereby avoiding the outside shielding object from shielding the device air vent, thereby avoiding affecting the ventilation effect. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor under the premise of not paying the creative labor:

[0020] Figure 1 It is an appearance structure schematic diagram of the present application;

[0021] Figure 2 It is a front cross-sectional structure schematic diagram of the present application;

[0022] Figure 3 It is a moving closing mechanism cross-sectional structure schematic diagram of the present application;

[0023] Figure 4 It is a moving assembly expansion structure schematic diagram of the present application;

[0024] Figure 5 It is an appearance structure schematic diagram of the closing assembly of the present application;

[0025] Figure 6 It is a shielding mechanism expansion structure schematic diagram of the present application.

[0026] In the figure: 1, greenhouse; 2, ventilation frame; 3, moving closing mechanism; 4, shielding mechanism; 5, filter plate; 6, bolt; 7, activated carbon filter plate; 8, negative pressure fan; 31, moving assembly; 32, closing assembly; 311, fixed frame; 312, motor one; 313, screw rod; 314, sliding rail; 315, threaded block; 316, net rack; 321, No. 1 rotating rod; 322, rotating rod one; 323, closing plate one; 324, synchronous rod; 325, rotating rod two; 326, closing plate two; 41, connecting frame; 42, motor two; 43, gear one; 44, gear two; 45, shielding plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] Embodiment one:

[0030] Based on the prior art existing at present, due to the complex and changeable weather outside the greenhouse, and because the ventilation opening of the device cannot be closed, the temperature in the shed is greatly affected by the external environment, and the temperature can be too low or too high, which is not conducive to crop growth, especially in extreme weather conditions, such as cold wave or windy weather, if the ventilation opening is not closed in time, it may cause the problem of crop freezing, please refer to Figures 1-6 The present application provides a technical scheme: a ventilation device for a greenhouse, comprising a greenhouse 1, a ventilation frame 2 fixedly connected to the top of the greenhouse 1, a moving closing mechanism 3 provided on the front of the ventilation frame 2, a shielding mechanism 4 provided on the back of the ventilation frame 2, a filter plate 5 inserted into the ventilation frame 2, a bolt 6 inserted between the filter plate 5 and the ventilation frame 2, an activated carbon filter plate 7 fixedly connected to the inside of the ventilation frame 2, and a negative pressure fan 8 fixedly connected to the inside of the ventilation frame 2.

[0031] The moving closing mechanism 3 comprises a moving assembly 31 and a closing assembly 32, and the closing assembly 32 is arranged at the back of the moving assembly 31;

[0032] The moving assembly 31 comprises a fixed frame 311 fixedly connected to the front of the ventilation frame 2, and a motor 312 fixedly connected to the inner side of the front of the fixed frame 311, and a screw rod 313 fixedly connected to the output end of the motor 312, and a threaded block 315 threadedly connected to the outer side of the screw rod 313, and a sliding rail 314 fixedly connected to the inner side of the front of the threaded block 315, and a net rack 316 fixedly connected to the left and right sides of the ventilation frame 2, so as to facilitate the synchronous movement of the threaded block 315.

[0033] Further, a groove is arranged at the corresponding position of the sliding rail 314 and the threaded block 315, and the threaded block 315 is slidingly connected in the groove, so as to facilitate the limitation of the movement of the threaded block 315.

[0034] Further, a hole is arranged at the corresponding position of the fixed frame 311 and the screw rod 313, and the screw rod 313 is rotatably connected in the hole, so as to facilitate the stable rotation of the screw rod 313.

[0035] Further, the closing assembly 32 comprises a first rotating rod 321 rotatably connected to the front of the threaded block 315, a rotating rod 322 rotatably connected to the end of the first rotating rod 321 away from the threaded block 315, a closing plate 323 rotatably connected to the back of the rotating rod 322, a synchronous rod 324 rotatably connected to the end of the rotating rod 322 away from the first rotating rod 321, a rotating rod 325 drivingly connected to the end of the synchronous rod 324 away from the rotating rod 322, and a closing plate 326 rotatably connected to the back of the rotating rod 325, so as to facilitate the opening or closing of the ventilation opening of the ventilation frame 2.

[0036] Further, the closing plate 323 is rotatably connected to the inside of the ventilation frame 2, and the closing plate 326 is rotatably connected to the inside of the ventilation frame 2, so as to facilitate the synchronous rotation of the closing plate 323 and the closing plate 326.

[0037] Embodiment two:

[0038] Based on the existing prior art to avoid the problem of blocking the air outlet by the shielding object, please refer to Figure 6 , and combined with embodiment one, it is further obtained that the shielding mechanism 4 comprises a connecting frame 41 fixedly connected to the back of the ventilation frame 2, a motor 42 fixedly connected to the inside of the connecting frame 41, a gear 43 fixedly connected to the output end of the motor 42, a gear 44 meshing with the left side of the gear 43, and a shielding plate 45 fixedly connected to the front of the gear 44, so as to facilitate the adjustment of the shielding position according to the demand.

[0039] Further, the shielding plate 45 is rotationally connected to the front and rear inner sides of the ventilation frame 2, and the gear two 44 is rotationally connected to the inside of the connecting frame 41, so as to conveniently drive the shielding plate 45 to rotate synchronously.

[0040] In actual operation, when the device is used, first, it is installed on the top of the greenhouse 1, and the ventilation frame 2 keeps the air inside and outside the plastic greenhouse unobstructed, and in use, it ensures that the air inside and outside the greenhouse 1 keeps unobstructed flow by starting the negative pressure fan 8, and filters the dust and harmful gases in the air through the filter plate 5 and the activated carbon filter plate 7 respectively, so as to avoid affecting the daily growth of crops, and when extreme weather is encountered, the moving closing mechanism 3 is set, the motor one 312 is started, the screw rod 313 is driven to rotate by the motor one 312, and the threaded block 315 is moved along the slide rail 314 guided by the screw rod 313, thereby synchronously driving the threaded block 315 to move downward, so that the first rotating rod 321 is moved synchronously during the downward movement of the threaded block 315, and the rotating rod one 322 is pulled to rotate around the connection point of the ventilation frame 2, thereby synchronously driving the closing plate one 323 to rotate, and the synchronous rod 324 is pulled to rotate around the connection point of the ventilation frame 2 during the rotation of the rotating rod one 322, thereby synchronously driving the closing plate two 326 to rotate, so that the closing plate one 323 and the closing plate two 326 rotate synchronously, until the ventilation openings of the left and right ventilation frames 2 are closed, and then the shielding mechanism 4 is set, the motor two 42 is started, the gear one 43 is driven to rotate by the motor two 42, and the gear two 44 is driven to rotate by the gear one 43, thereby driving the shielding plate 45 to rotate by the gear two 44, so that the shielding plate 45 adjusts the appropriate shielding position according to the demand.

[0041] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or equipment including the element.

Claims

1. A ventilation device for a greenhouse, comprising a greenhouse (1), characterized in that: The greenhouse (1) top is fixedly connected with a ventilation frame (2), the front of the ventilation frame (2) is provided with a moving closing mechanism (3), the back of the ventilation frame (2) is provided with a shielding mechanism (4), the inside of the ventilation frame (2) is inserted with a filter plate (5), the filter plate (5) and the ventilation frame (2) are inserted with a bolt (6), the inside of the ventilation frame (2) is fixedly connected with an activated carbon filter plate (7), and the inside of the ventilation frame (2) is fixedly connected with a negative pressure fan (8). The moving closing mechanism (3) comprises a moving assembly (31) and a closing assembly (32), and the closing assembly (32) is arranged at the back of the moving assembly (31). The moving assembly (31) comprises a fixed frame (311), the fixed frame (311) is fixedly connected to the front of the ventilation frame (2), the front inner side of the fixed frame (311) is fixedly connected with a motor one (312), the output end of the motor one (312) is fixedly connected with a screw rod (313), the outer thread of the screw rod (313) is connected with a threaded block (315), the front inner side of the threaded block (315) is fixedly connected with a sliding rail (314), and the left and right sides of the ventilation frame (2) are fixedly connected with a net rack (316).

2. The ventilation device of a greenhouse according to claim 1, characterized in that: Corresponding positions of the sliding rail (314) and the threaded block (315) are provided with grooves, and the threaded block (315) is slidably connected in the groove.

3. The ventilation device of a greenhouse according to claim 1, characterized in that: Corresponding positions of the fixed frame (311) and the screw rod (313) are provided with holes, and the screw rod (313) is rotatably connected in the hole.

4. The ventilation device of a greenhouse according to claim 1, characterized in that: The closing assembly (32) comprises a No. 1 rotating rod (321), the No. 1 rotating rod (321) is rotatably connected to the front of the threaded block (315), the end of the No. 1 rotating rod (321) away from the threaded block (315) is rotatably connected with a rotating rod one (322), the back of the rotating rod one (322) is rotatably connected with a closing plate one (323), the end of the rotating rod one (322) away from the No. 1 rotating rod (321) is rotatably connected with a synchronous rod (324), the end of the synchronous rod (324) away from the rotating rod one (322) is drivingly connected with a rotating rod two (325), and the back of the rotating rod two (325) is rotatably connected with a closing plate two (326).

5. The ventilation device of a greenhouse according to claim 4, characterized in that: The closing plate one (323) is rotatably connected inside the ventilation frame (2), and the closing plate two (326) is rotatably connected inside the ventilation frame (2).

6. The ventilation device of a greenhouse according to claim 1, characterized in that: The shielding mechanism (4) comprises a connecting frame (41), the connecting frame (41) is fixedly connected to the back of the ventilation frame (2), the inside of the connecting frame (41) is fixedly connected with a motor two (42), the output end of the motor two (42) is fixedly connected with a gear one (43), the left side of the gear one (43) is engaged with a gear two (44), and the front of the gear two (44) is fixedly connected with a shielding plate (45).

7. The ventilation device of a greenhouse according to claim 6, characterized in that: The shielding plate (45) is rotatably connected to the inside of the front and back of the ventilation frame (2), and the gear two (44) is rotatably connected inside the connecting frame (41).

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