Greenhouse ventilation device with good heat preservation effect

Abstract

The greenhouse ventilation device with the good heat preservation effect comprises an outer conveying pipe, an inner conveying pipe is arranged in the outer conveying pipe, a first fan blade is arranged at one end of the inner conveying pipe, a second fan blade is arranged at one end of the outer conveying pipe, and the second fan blade is arranged on the outer side of the first fan blade. One end of the second fan blade is fixedly connected with an air outlet, one side of the outer conveying pipe is fixedly connected with a suction opening, one end of the first fan blade pipe is fixedly connected with an expansion pipe, one end of the expansion pipe is fixedly connected with a rain blocking table, and the other end of the inner conveying pipe is fixedly connected with an output opening. The motor can drive the first fan blade and the second fan blade to rotate. The first fan blades can suck external gas into the greenhouse, and the second fan blades can suck gas in the greenhouse out of the greenhouse, so that gas exchange is completed. And gas sucked by the second fan blades can move between the outer conveying pipe and the inner conveying pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of greenhouse ventilation, in particular to a greenhouse ventilation device with good heat preservation effect. Background Art

[0002] Greenhouse, also known as hothouse, is a facility that can transmit light, keep warm (or heat), and is used to grow plants. In seasons that are not suitable for plant growth, it can provide a greenhouse growth period and increase production. It is mostly used for the cultivation or seedling raising of warm-loving vegetables, flowers, trees and other plants in low temperature seasons. There are many types of greenhouses, which can be divided into many categories according to different roof frame materials, lighting materials, appearance and heating conditions.

[0003] After searching the prior art, publication number CN108450197A discloses a ventilation shed, including a wall, a ceiling is provided at the upper end of the wall, a ventilation device is provided on the wall, the ventilation device includes a window panel provided on the wall, a vent adapted to the window panel is provided in the wall, the vent runs through the wall, the lower side of the window panel is hinged with the lower edge of the vent, a traction wire is provided at the top of the window panel, the other end of the traction wire is connected to the vent, and a sealing elastic layer is provided on the outer edge of the window panel and the inner wall of the vent. A window blade is also provided in the vent, a grille is provided on the window blade, a gap is provided between adjacent grilles, and the grille is inclined toward the ground, the ventilation device also includes an antibacterial cavity and a ventilation cavity, a ventilation plate is provided between the antibacterial cavity and the ventilation cavity, and an antibacterial agent is provided in the antibacterial cavity.

[0004] The comparative documents use ventilation devices to exchange air inside and outside the greenhouse, and the ventilation devices are close to the wall, making it difficult for the ventilation devices to exchange air in the middle of the greenhouse. In addition, the ventilation devices will directly draw cold air from the outside into the greenhouse, causing the temperature of the greenhouse to drop. Utility Model Content

[0005] The utility model aims to provide a greenhouse ventilation device with good thermal insulation effect to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes an outer transmission tube, an inner transmission tube is arranged inside the outer transmission tube, a first fan blade is arranged at one end of the inner transmission tube, a second fan blade is arranged at one end of the outer transmission tube, the second fan blade is arranged on the outside of the first fan blade, one end of the second fan blade is fixedly connected to an air outlet, one side of the outer transmission tube is fixedly connected to an air exhaust port, one end of the first fan blade is fixedly connected to an expansion tube, one end of the expansion tube is fixedly connected to a rain shield, and the other end of the inner transmission tube is fixedly connected to an output port.

[0007] Preferably, a transmission shaft is provided in the middle of the first fan blade, one end of the transmission shaft is fixedly connected to a transmission motor, the outer surface of the transmission motor is fixedly connected to a support ring, a support plate is provided on the outer side of the support ring, and the support plate is fixedly connected to the inner wall of the inner transmission tube.

[0008] Preferably, the outer transmission tube and the inner transmission tube have the same axis, a plurality of fixing plates are fixedly connected between the outer transmission tube and the inner transmission tube, and the plurality of fixing plates are equidistantly distributed between the outer transmission tube and the inner transmission tube.

[0009] Preferably, the outer side of the first blade is fixedly connected to a first connecting ring, the outer side of the first connecting ring is rotatably connected to a transmission cylinder, the inside of the transmission cylinder is rotatably connected to a rotating shaft, and the rotating shaft is fixedly connected to the side wall of the inner transmission tube.

[0010] Preferably, a second connecting ring is fixedly connected to the inner side of the second fan blade, the second connecting ring is in contact with the transmission cylinder, the second fan blade is located on the outer side of the first fan blade, and the second fan blade and the first fan blade have the same deflection direction.

[0011] Preferably, the air outlet is trumpet-shaped and has a plurality of flow holes.

[0012] Preferably, the middle portion of the inner transmission tube passes through the inner wall of the outer transmission tube, and the portion of the inner transmission tube extending out of the outer transmission tube extends vertically upward.

[0013] Compared with the prior art, the beneficial effect of the utility model is that the motor can drive the first blade and the second blade to rotate. The first blade can draw external gas into the greenhouse, and the second blade can draw the gas in the greenhouse out of the greenhouse to complete the gas exchange. The gas drawn in by the second blade can move between the outer transmission tube and the inner transmission tube, and the gas discharged by the first blade can move in the inner transmission tube. At the same time, the discharged hot air can heat the inner transmission tube during the movement, so that the inner transmission tube heats the input fresh air. It can ensure heat exchange and heat the input cold air to facilitate maintaining the temperature in the greenhouse.

[0014] The motor can drive the first blade and the second blade to rotate at the same time. The first blade and the second blade rotate synchronously in opposite directions, which can effectively reduce the vibration and noise of the overall ventilation device. When the first blade rotates, the first connecting ring outside the first blade can drive the second connecting ring of the second blade to rotate through the transmission cylinder. The first connecting ring and the second connecting ring rotate in opposite directions, which can offset the force generated by the rotation, reduce noise and vibration. At the same time, the first blade and the second blade have the same direction, which can make the first blade and the second blade respectively have the effect of drawing air inward and exhausting air outward. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 It is a left-side structural schematic diagram of the utility model;

[0018] Figure 4 This is a schematic diagram of the second fan blade structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the first fan blade structure of the utility model;

[0020] Figure 6 It is a schematic diagram of the internal structure of the outer transmission tube of the utility model.

[0021] In the figure: 1. outer transmission pipe; 2. inner transmission pipe; 3. first fan blade; 4. second fan blade; 5. air outlet; 6. exhaust port; 7. expansion tube; 8. rain shield; 9. output port; 10. transmission shaft; 11. transmission motor; 12. support ring; 13. support plate; 14. fixing plate; 15. first connecting ring; 16. transmission cylinder; 17. rotating shaft; 18. second connecting ring; 19. circulation hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 6 , the utility model provides the embodiment:

[0024] Embodiment: It comprises an outer transmission pipe 1, an inner transmission pipe 2 is provided inside the outer transmission pipe 1, a first blade 3 is provided at one end of the inner transmission pipe 2, a second blade 4 is provided at one end of the outer transmission pipe 1, and the second blade 4 is arranged on the outside of the first blade 3. The first blade 3 and the second blade 4 can draw air inward and discharge air outward when rotating. An air outlet 5 is fixedly connected to one end of the second blade 4. An air extraction port 6 is fixedly connected to one side of the outer transmission pipe 1, an expansion pipe 7 is fixedly connected to one end of the expansion pipe 7, and a rain shield 8 is fixedly connected to one end of the expansion pipe 7, which can prevent rainwater from falling into the pipe. An output port 9 is fixedly connected to the other end of the inner transmission pipe 2.

[0025] A transmission shaft 10 is provided in the middle of the first blade 3, one end of the transmission shaft 10 is fixedly connected to a transmission motor 11, and a support ring 12 is fixedly connected to the outer surface of the transmission motor 11, and the support ring 12 can play the role of fixing the transmission motor 11. A support plate 13 is provided on the outer side of the support ring 12, and the support plate 13 is fixedly connected to the inner wall of the inner transmission pipe 2.

[0026] The outer transmission tube 1 and the inner transmission tube 2 have the same axis, and a plurality of fixing plates 14 are fixedly connected between the outer transmission tube 1 and the inner transmission tube 2. The plurality of fixing plates 14 are equidistantly distributed between the outer transmission tube 1 and the inner transmission tube 2.

[0027] The first connecting ring 15 is fixedly connected to the outer side of the first blade 3, and the transmission cylinder 16 is rotatably connected to the outer side of the first connecting ring 15. The interior of the transmission cylinder 16 is rotatably connected to a rotating shaft 17, and the rotating shaft 17 is fixedly connected to the side wall of the inner transmission tube 2. When the first connecting ring 15 rotates, it can drive the transmission cylinder 16, so that the transmission cylinder 16 rotates on the rotating shaft 17.

[0028] A second connecting ring 18 is fixedly connected to the inner side of the second blade 4, and the second connecting ring 18 contacts the transmission cylinder 16. The second blade 4 is located outside the first blade 3, and the second blade 4 and the first blade 3 have the same deflection direction. The rotation of the transmission cylinder 16 can drive the second connecting ring 18 to rotate, and then the second connecting ring 18 drives the second blade 4 to rotate.

[0029] The air outlet 5 is in a trumpet shape and is provided with a plurality of flow holes 19 .

[0030] The middle part of the inner transmission tube 2 penetrates the inner wall of the outer transmission tube 1, and the inner transmission tube 2 extends vertically upward from the outer transmission tube 1. After extending upward, the inner transmission tube 2 and the outer transmission tube 1 can be distanced apart to facilitate air circulation without affecting each other.

[0031] During installation, the exhaust port 6 and the rain shield 8 are placed outside the greenhouse, and the other ends of the inner transmission pipe 2 and the outer transmission pipe 1 are placed inside the greenhouse to complete the installation. The machine can drive the first blade 3 and the second blade 4 to rotate. The first blade 3 can draw the external gas into the greenhouse, and the second blade 4 can draw the gas in the greenhouse out of the greenhouse to complete the gas exchange. The gas drawn in by the second blade 4 can move between the outer transmission pipe 1 and the inner transmission pipe 2, and the gas discharged by the first blade 3 can move in the inner transmission pipe 2. At the same time, the discharged hot air can heat the inner transmission pipe 2 during the movement, so that the inner transmission pipe 2 heats the input fresh air. It can ensure heat exchange and heat the input cold air to facilitate maintaining the temperature in the greenhouse.

[0032] The motor can drive the first blade 3 and the second blade 4 to rotate at the same time. The first blade 3 and the second blade 4 rotate synchronously in opposite directions, which can effectively reduce the vibration and noise of the overall ventilation device. When the first blade 3 rotates, the first connecting ring 15 outside the first blade 3 can drive the second connecting ring 18 of the second blade 4 to rotate through the transmission cylinder 16. The first connecting ring 15 and the second connecting ring 18 rotate in opposite directions, which has the effect of offsetting the force generated by the rotation, reducing noise and vibration. At the same time, the first blade 3 and the second blade 4 have the same direction, which can make the first blade 3 and the second blade 4 have the effect of drawing air inward and exhausting air outward respectively.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A greenhouse ventilation device with good heat preservation effect, comprising an external transmission pipe (1), characterized in that: An inner transmission tube (2) is arranged inside the outer transmission tube (1), a first fan blade (3) is arranged at one end of the inner transmission tube (2), a second fan blade (4) is arranged at one end of the outer transmission tube (1), the second fan blade (4) is arranged on the outside of the first fan blade (3), one end of the second fan blade (4) is fixedly connected to an air outlet (5), one side of the outer transmission tube (1) is fixedly connected to an air exhaust port (6), one end of the first fan blade (3) is fixedly connected to an expansion tube (7), one end of the expansion tube (7) is fixedly connected to a rain shield (8), and the other end of the inner transmission tube (2) is fixedly connected to an output port (9).

2. A greenhouse ventilation device with good thermal insulation effect according to claim 1, characterized in that: A transmission shaft (10) is provided in the middle of the first fan blade (3); one end of the transmission shaft (10) is fixedly connected to a transmission motor (11); a support ring (12) is fixedly connected to the outer surface of the transmission motor (11); a support plate (13) is provided on the outer side of the support ring (12); and the support plate (13) is fixedly connected to the inner wall of the inner transmission pipe (2).

3. A greenhouse ventilation device with good thermal insulation effect according to claim 1, characterized in that: The outer transmission tube (1) and the inner transmission tube (2) have the same axis, a plurality of fixing plates (14) are fixedly connected between the outer transmission tube (1) and the inner transmission tube (2), and the plurality of fixing plates (14) are equidistantly distributed between the outer transmission tube (1) and the inner transmission tube (2).

4. A greenhouse ventilation device with good thermal insulation effect according to claim 2, characterized in that: The outer side of the first blade (3) is fixedly connected to a first connecting ring (15), the outer side of the first connecting ring (15) is rotatably connected to a transmission cylinder (16), the interior of the transmission cylinder (16) is rotatably connected to a rotating shaft (17), and the rotating shaft (17) is fixedly connected to the side wall of the inner transmission tube (2).

5. A greenhouse ventilation device with good thermal insulation effect according to claim 4, characterized in that: A second connecting ring (18) is fixedly connected to the inner side of the second blade (4), the second connecting ring (18) is in contact with the transmission cylinder (16), the second blade (4) is located on the outer side of the first blade (3), and the second blade (4) and the first blade (3) have the same deflection direction.

6. A greenhouse ventilation device with good thermal insulation effect according to claim 1, characterized in that: The air outlet (5) is trumpet-shaped and is provided with a plurality of flow holes (19).

7. A greenhouse ventilation device with good heat preservation effect according to claim 1, characterized in that: The middle portion of the inner transmission tube (2) penetrates the inner wall of the outer transmission tube (1), and the portion of the inner transmission tube (2) that protrudes from the outer transmission tube (1) extends vertically upwards.

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