A new double-arch double-membrane sunlight greenhouse

Abstract

This utility model relates to the field of double-arch greenhouse technology, specifically a novel double-arch double-film solar greenhouse, including a rear wall and two gable walls. Several outer and inner arch frames are fixedly connected at intervals on the rear wall. The outer arch frames are covered with a light-transmitting film. A retractable inner cotton quilt roll is installed at the top of the inner arch frame, which is covered with a sunshade curtain. One end of the sunshade curtain is fixedly connected to the highest point of the inner arch frame, and the other end is wound around a first film roller, which is connected to the gable wall. An outwardly protruding support is fixedly connected to the top of the outer side of the rear wall. A baffle rod is fixedly connected to the outside of the support, and a retractable outer cotton quilt roll is installed inside the baffle rod. Frost-proof boards are installed at the bottom of all four sides of the greenhouse. This utility model improves upon the forward-leaning slope of the original greenhouse rear wall, allowing the outer cotton quilt roll to retract directly above the rear wall, reducing sunlight obstruction and increasing the light exposure time for crops near the rear wall. Simultaneously, the frost-proof boards at the bottom of the greenhouse further enhance heat preservation.

Description

Technical Field

[0001] This utility model relates to the field of double-arch greenhouse technology, specifically a novel double-arch double-film solar greenhouse. Background Technology

[0002] A solar greenhouse, also known as a warm shed, consists of two side walls, a rear wall, a supporting frame, and covering materials. It is a unique type of greenhouse found only in northern my country. It is an unheated greenhouse that uses the rear wall to absorb and store solar energy, maintaining a certain temperature level to meet the needs of vegetable crops. In existing double-arch solar greenhouses, crops near the greenhouse walls and on the front slope of the frame do not grow as well as those in the center of the greenhouse. This is mainly because the forward-leaning rafter-like rear slope of the top of the rear wall blocks some sunlight, and in winter, the frozen soil prevents the soil temperature inside the greenhouse from rising effectively. Therefore, improvements to existing double-arch solar greenhouses are needed to meet these requirements. Utility Model Content

[0003] To address the above technical problems, this utility model provides a novel double-arch double-film solar greenhouse that can improve the growth of crops around the perimeter of the greenhouse, thus solving the problem of poor crop growth around the perimeter of existing greenhouses.

[0004] To solve the above-mentioned technical problems, the present invention provides a novel double-arch double-film solar greenhouse, comprising a rear wall and two side gable walls. A plurality of outer arch frames and inner arch frames are fixedly connected at intervals on the rear wall. The outer arch frames are located above the inner arch frames and are arranged parallel to the side gable walls. A plurality of horizontal tie rods are also fixedly connected at intervals between the two side gable walls. The horizontal tie rods are fixedly connected to the outer arch frames and inner arch frames. A light-transmitting film is covered on the outer arch frames. A rollable outer cotton quilt roll is installed at the top of the outer arch frames. A rollable inner cotton quilt roll is installed at the top of the inner arch frames. A sunshade curtain is covered on the inner arch frames. One end of the sunshade curtain is fixedly connected to the highest point of the inner arch frame, and the other end is wound around a first film roller. The first film roller is connected to the gable wall. An outwardly protruding support is fixedly connected to the top of the outer side of the rear wall. A baffle rod is fixedly connected to the outside of the support. A rollable outer cotton quilt roll is installed inside the baffle rod. Freezing barriers are installed at the bottom of all four sides of the greenhouse.

[0005] Furthermore, the top of the light-transmitting film is wound on the second film winding machine, the bottom of the light-transmitting film is wound on the third film winding machine, and the middle of both sides of the light-transmitting film is fixedly connected to the gable walls on both sides. The second film winding machine and the third film winding machine are both connected to the gable walls on both sides.

[0006] Furthermore, the rear wall has a three-layer structure: an outer layer of polystyrene board, a central frame, and an inner layer of thermal insulation.

[0007] Furthermore, a first roller is rotatably connected to the quilt-blocking rod, the outer end of the outer quilt roll is fixedly connected to the bottom of the quilt-blocking rod, a traction rope is wound around the first roller, the outer end of the traction rope passes around the outer quilt roll and is fixedly connected to the bottom of the quilt-blocking rod, and the first roller is driven by a first motor.

[0008] Furthermore, a second roller is provided above the inner arch frame. The second roller is rotatably connected to the rear wall. The outer end of the inner quilt roll is fixedly connected to the rear wall. A traction rope is also wound around the second roller. The outer end of the traction rope passes around the inner quilt roll and is fixedly connected to the rear wall. The second roller is driven by a second motor.

[0009] Furthermore, the rear wall, the gable walls on both sides, and the bottom of the outer arch frame are all fixedly connected to a base.

[0010] Furthermore, the bottom end of the inner arch frame is fixedly connected to the ground anchor via a connecting seat.

[0011] Furthermore, a limit rod is also inclinedly and fixedly connected to the lower part of the baffle rod.

[0012] Furthermore, a reinforcing rod is fixedly connected between the upper part of the outer arch frame and the rear wall.

[0013] This utility model has the following advantages compared with the prior art:

[0014] 1. This utility model, by setting a support outward from the top of the rear wall, allows the outer cotton quilt roll to be rolled up to the top of the outer wall, and eliminates the traditional forward-leaning rafter structure of the rear wall, increasing the light exposure time for crops near the rear wall inside the greenhouse and effectively improving crop growth; by setting frost-proof boards around the greenhouse, the soil temperature near the greenhouse wall and the front slope of the frame is effectively increased in winter, preventing frozen soil from affecting the temperature of the surrounding soil inside the greenhouse and thus affecting crop growth. At the same time, the frost-proof boards can also prevent nutrients such as nutrient solution and fertilizer from flowing out of the greenhouse, improving nutrient utilization.

[0015] 2. By setting a base and ground anchor at the bottom of the greenhouse, this utility model avoids the collapse of the outer arch frame and rear wall after long-term use, which would cause deformation of the outer arch frame, inner arch frame and horizontal tie rod, thus increasing the service life of the greenhouse. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a diagram illustrating the rolling up and unrolling of an outer cotton quilt.

[0018] In the diagram: 1. Rear wall; 101. Polystyrene board; 102. Frame; 103. Thermal insulation layer; 2. Outer arch frame; 3. Inner arch frame; 4. Horizontal tie rod; 5. Support; 6. Base; 7. Frost insulation board; 8. Ground anchor; 9. Connecting seat; 10. Blanket rod; 11. Limiting rod; 12. First roll rod; 13. Outer quilt roll; 14. Reinforcing rod; 15. Inner quilt roll; 16. Second roll rod; 17. First roll film device; 18. Sunshade curtain; 19. Second roll film device; 20. Third roll film device. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figures 1 to 2 The illustration depicts a novel double-arched, double-film greenhouse, comprising a rear wall 1 and two side gable walls. Several outer arch frames 2 and inner arch frames 3 are fixedly connected at intervals on the rear wall 1. The outer arch frames 2 are positioned above the inner arch frames 3, and their bottom ends are embedded in the ground for further fixation. The outer arch frames 2 and inner arch frames 3 are arranged parallel to the side gable walls. Several horizontal tie rods 4 are also fixedly connected at intervals between the side gable walls. The tie rods 4 are fixedly connected to the outer arch frames 2 and inner arch frames 3 by welding or bolts to form a stable, grid-like structure. The outer arch frames 2 are covered with a light-transmitting film. A rollable outer quilt roll 13 is installed at the top of the outer arch frames 2, and a rollable inner quilt roll 15 is installed at the top of the inner arch frames 3. The inner quilt roll 15 has a double-layer structure: an upper quilt and a lower plastic film. The inner arch frames 3 are covered with… The sunshade curtain 18 is fixedly connected at one end to the highest point of the inner arch frame 3 and the other end is wrapped around the first film roller 17. The sunshade curtain 18 is made of semi-transparent shading material such as shading net. The first film roller 17 is connected to the gable wall. The outer top of the back wall 1 is fixedly connected to the outward protruding support 5. The support 5 is fixedly connected to the outer side of the baffle rod 10. The support 5 is located inside the baffle rod 10 and is equipped with a retractable outer cotton quilt roll 13. The bottom of the greenhouse is equipped with frost-proof boards 7. The frost-proof boards 7 are buried on the outer side of the greenhouse gable wall, back wall and front bottom, and the distance is no more than 50cm. The frost-proof boards 7 are extruded frost-proof boards with a thickness of not less than 100mm. According to the test measurement, the soil temperature at the inner edge of the greenhouse with frost-proof boards 7 is 2-4℃ higher than that of the greenhouse without frost-proof boards 7.

[0021] To facilitate ventilation inside the greenhouse, the top of the light-transmitting film is wound around the second film roller 19 as the upwind vent, and the bottom of the light-transmitting film is wound around the third film roller 20 as the downwind vent. The middle of both sides of the light-transmitting film is fixedly connected to the gable walls on both sides. The second film roller 19 and the third film roller 20 are both connected to the gable walls on both sides through their mounting components.

[0022] To further enhance the insulation effect, the rear wall 1 has a three-layer structure, including a polystyrene board 101, a frame 102, and a thermal insulation layer that are fixedly connected from the outside to the inside. The thickness of the polystyrene board 101 is not less than 200mm. The frame 102 uses 50*150 square tubing. The thermal insulation layer can be made of extruded polystyrene foam. If necessary, the gable walls on both sides can also adopt the same three-layer structure as the rear wall 1.

[0023] To facilitate the winding of the outer quilt roll 13, a first winding rod 12 is rotatably connected to the quilt baffle rod 10 via a bearing. One end of the outer quilt roll 13 is fixedly connected to the quilt baffle rod 10. Several sets of traction ropes are wound around the outer quilt roll 13. One end of the traction rope is fixedly connected to the quilt baffle rod 10, and the other end is wound around the first winding rod 12. One end of the first winding rod 12 is connected to the output end of the first motor. In this example, one end of the first winding rod 12 is fixedly connected to the output end of the first motor, and the first motor is fixedly connected to the quilt baffle rod 10.

[0024] To facilitate the winding of the inner quilt roll 15, a second winding rod 16 is provided above the inner arch frame 3. The second winding rod 16 is rotatably connected to the rear wall 1 via a bearing. One end of the inner quilt roll 15 is fixedly connected to the rear wall 1. A traction rope is wrapped around the outer side of the inner quilt roll 15. One end of the traction rope is fixedly connected to the rear wall 1, and the other end is wound around the second winding rod 16. The second winding rod 16 is driven by a second motor. In this example, one end of the second winding rod 16 is fixedly connected to the output end of the second motor, and the second motor is fixedly connected to the rear wall 1.

[0025] It should be noted that in this embodiment, the principle of rolling up and down the inner and outer quilt rolls is the same. Both use a rotating rod to pull the traction rope, which in turn pulls the inner and outer quilt rolls to roll, thus achieving the flatness or rolling up of the inner and outer quilt rolls. This is an existing method of rolling up thermal insulation curtains, and will not be described in detail here.

[0026] To prevent the bottom of the rear wall 1, the two gable walls, and the outer arch frame 2 from collapsing due to the long-term watering environment in the greenhouse, the bottom of the rear wall 1, the two gable walls, and the outer arch frame 2 are all fixedly connected to the base 6, which is made of concrete foundation of not less than C25.

[0027] To prevent the inner arch frame 3 from collapsing downwards, the bottom end of the inner arch frame 3 is fixedly connected to the ground anchor 8 through the connecting seat 9. The ground anchor 8 is a galvanized steel pipe ground anchor.

[0028] To prevent the outer quilt roll 13 from being over-rolled, the lower part of the quilt bar 10 is also inclined and fixedly connected to the limit bar 11.

[0029] To increase the stability of the connection between the outer arch frame 2 and the rear wall 1, a reinforcing rod 14 is also fixedly connected between the upper part of the outer arch frame 2 and the rear wall 1.

[0030] It should be noted that: In this embodiment, the film rolling machine produced by Langfang Yunlong Agricultural Technology Co., Ltd. is used. The support rods connecting the first film rolling machine 17, the second film rolling machine 19, and the third film rolling machine 20 to the gable wall all adopt a telescopic sleeve structure to adapt to the movement trajectory of the rolling rod conforming to the arch frame. The first film rolling machine 17 adopts the XTR-150W model film rolling machine, and the second film rolling machine 19 and the third film rolling machine 20 adopt the XTR-100W model film rolling machine. The film rolling machine and its installation components are all existing devices, and the specific structure will not be described in detail.

[0031] The working process of this embodiment is as follows:

[0032] During the day, roll up the outer cotton quilt roll 13 and the inner cotton quilt roll 15 to allow the crops in the greenhouse to receive sufficient sunlight. If the sunlight is too strong, the operator can start the first film roller 17 to lay the shade curtain 18 on the inner arch frame 3 to block some of the sunlight. When the operator observes that the shade curtain 18 is about to be fully laid flat, close the first film roller 17. When ventilation is needed, the operator can start the second film roller 19 to roll up the top part of the plastic film, and at the same time, the third film roller 20 can be started to roll up the bottom part of the plastic film to further increase the air intake and improve the ventilation effect. When the operator observes that the upper and lower vents are fully open or open to the required size, close the second film roller 19 and the third film roller 20. In the evening, the operator... The second film roller 19 can be activated to lay out the top portion of the rolled-up plastic film, while the third film roller 20 can be activated to lower the bottom portion of the rolled-up plastic film, thus sealing the upper and lower vents. Then, the operator activates the first film roller 17 to lay out the shading curtain 18, followed by activating the first motor to lower the outer cotton quilt roll 13 and activating the second motor to lower the inner cotton quilt roll 15. Once the shading curtain 18, outer cotton quilt roll 13, and inner cotton quilt roll 15 are all laid out, the first film roller 17, the first motor, and the second motor are turned off respectively, achieving a nighttime warming effect. During this period, the frost-proof board 7 can play a role in heat preservation and cold protection, preventing the low temperature of the outside soil from affecting the soil temperature at the edge of the greenhouse, and also preventing nutrients from escaping from the greenhouse, thus improving the utilization rate of fertilizers and other nutrients.

Claims

1. A novel double-arch double-film solar greenhouse, comprising a rear wall (1) and two side gable walls, wherein a plurality of outer arch frames (2) and inner arch frames (3) are fixedly connected at intervals on the rear wall (1), and a plurality of horizontal tie rods (4) are fixedly connected at intervals between the two side gable walls, the horizontal tie rods (4) being fixedly connected to the outer arch frames (2) and the inner arch frames (3) respectively, the outer arch frames (2) being covered with a light-transmitting film, the top of the outer arch frames (2) being provided with a rollable outer cotton quilt roll (13), and the top of the inner arch frames (3) being provided with a rollable inner cotton quilt roll (15), characterized in that: The outer top of the rear wall (1) is fixedly connected to an outwardly protruding support (5), and a baffle rod (10) is fixedly connected to the outside of the support (5). The support (5) is located inside the baffle rod (10) and a retractable outer cotton quilt roll (13) is provided. Frost-proof plates (7) are provided at the bottom of the greenhouse.

2. The novel double-arch double-film solar greenhouse according to claim 1, characterized in that: The top of the light-transmitting film is wound around the second film winding machine (19), the bottom of the light-transmitting film is wound around the third film winding machine (20), and the middle of both sides of the light-transmitting film is fixedly connected to the gable walls on both sides. The second film winding machine (19) and the third film winding machine (20) are both connected to the gable walls on both sides.

3. The novel double-arch double-film solar greenhouse according to claim 1, characterized in that: The rear wall (1) has a three-layer structure: the outer layer is a polystyrene board (101), the central layer is a frame (102), and the inner layer is a thermal insulation layer (103).

4. The novel double-arch double-film solar greenhouse according to claim 1, characterized in that: The first roller (12) is rotatably connected to the quilt bar (10). The outer end of the outer quilt roll (13) is fixedly connected to the bottom of the quilt bar (10). A traction rope is wound around the first roller (12). The outer end of the traction rope passes around the outer quilt roll (13) and is fixedly connected to the bottom of the quilt bar (10). The first roller (12) is driven by a first motor.

5. The novel double-arch double-film solar greenhouse according to claim 1, characterized in that: A second roller (16) is provided above the inner arch frame (3). The second roller (16) is rotatably connected to the rear wall (1). The outer end of the inner quilt roll (15) is fixedly connected to the rear wall (1). A traction rope is also wound around the second roller (16). The outer end of the traction rope passes around the inner quilt roll (15) and is fixedly connected to the rear wall (1). The second roller (16) is driven by a second motor.

6. The novel double-arch double-film solar greenhouse according to claim 1, characterized in that: The inner arch frame (3) is covered with a sunshade curtain (18). One end of the sunshade curtain (18) is fixedly connected to the highest point of the inner arch frame (3), and the other end is wound around the first film roller (17), which is connected to the gable wall.

7. The novel double-arch double-film solar greenhouse according to claim 1, characterized in that: The bottom ends of the rear wall (1), the gable walls on both sides, and the outer arch frame (2) are all fixedly connected to a base (6).

8. The novel double-arch double-film solar greenhouse according to claim 1, characterized in that: The bottom end of the inner arch frame (3) is fixedly connected to the ground anchor (8) via a connecting seat (9).

9. The novel double-arch double-film solar greenhouse according to claim 1, characterized in that: The lower part of the baffle rod (10) is also inclined and fixedly connected to a limit rod (11).

10. The novel double-arch double-film solar greenhouse according to claim 1, characterized in that: A reinforcing rod (14) is also fixedly connected between the upper part of the outer arch frame (2) and the rear wall (1).

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