Frost-proof device for orchard
By designing a device with an arc-shaped baffle and a hinged door, the problems of uncontrollable combustion speed and short smoke duration caused by the exposure of the fire source in traditional fumigation methods are solved, achieving a portable and safe frost protection effect for orchards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUYUAN BRANCH NINGXIA AGRI & FORESTRY SCI
- Filing Date
- 2025-05-19
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional smoke extraction methods expose the fire source to the elements, making the burning speed highly susceptible to wind influence, difficult to control, resulting in short smoke duration, poor antifreeze effect, and the risk of the fire source being blown near the fruit trees.
Design a device that includes arc-shaped baffles on the left and right and hinged doors. The inlet and outlet air vents are controlled by adjusting the screw and handle to regulate the combustion speed and air volume, and to prevent the fire source from drifting out.
It enables easy control of the combustion rate, extends the duration of smoke, improves the antifreeze effect, and avoids the danger of fire to fruit trees.
Smart Images

Figure CN224124796U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of orchard frost protection technology, and in particular to an orchard frost protection device. Background Technology
[0002] Low-temperature freezing damage is a major cause of reduced yield and quality of fruit trees in orchards. Currently, a commonly used method for frost prevention in orchards is the smoke method, which involves digging a pit in the orchard and burning firewood in the pit to produce smoke and lower the surrounding temperature, thereby preventing frost damage to the fruit trees.
[0003] This method exposes the fire source completely to the outside, and the burning speed is greatly affected by the wind force, making it difficult to control and adjust according to the weather. When the wind is strong, it will burn too fast, resulting in a short smoke duration and poor antifreeze effect. Furthermore, the fire source may be blown to the vicinity of the fruit trees, posing a certain danger.
[0004] Based on this, a frost protection device for orchards was developed that is easy to control the burning rate, allows for a longer burning duration, and is easy to carry. Summary of the Invention
[0005] This invention provides a frost protection device for orchards that is easy to control in terms of combustion speed, allows for a longer combustion duration, and is portable. The problem it aims to solve is that traditional smoke fumigation methods leave the fire source completely exposed, and the combustion speed is greatly affected by wind force, making it difficult to control and adjust according to the weather. When the wind is strong, the fire burns too quickly, resulting in a short smoke duration and poor frost protection. Furthermore, the fire source may be blown to the vicinity of the fruit trees, posing a certain danger. Based on this, a frost protection device for orchards that is easy to control in terms of combustion speed, allows for a longer combustion duration, and is portable has been developed.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a frost protection device for orchards, comprising two baffles arranged on the left and right, the middle of the baffles being arc-shaped, and doors hinged to the front and rear sides of the baffles. A slider is slidably provided on the top of the door, and a connecting rod is provided between the two sliders on the corresponding side. The connecting rod is hinged to the two sliders respectively, and an adjusting screw is threaded through one side of the connecting rod. One end of the adjusting screw is rotatably connected to the corresponding baffle for positioning, and the other end is provided with a handle.
[0007] Preferably, the baffle includes flat plates on the front and rear sides and an arc-shaped plate in the middle.
[0008] Preferably, the two doors on opposite sides can rotate until they come into contact with each other.
[0009] Preferably, the bottom of the baffle is provided with an extension plate that slides vertically.
[0010] Preferably, the connecting rod near the middle has a detachable structure.
[0011] Preferably, the connecting rod comprises two rod parts, with a fixing screw hole at the end of each rod part.
[0012] Preferably, a connecting block is provided on the top of one side of the connecting rod, the connecting block has a threaded hole, the connecting rod passes through the threaded adjusting screw through the connecting block, a fixing block is provided on the corresponding baffle, and one end of the screw is rotatably connected to the fixing block for positioning.
[0013] Preferably, the handle has anti-slip texture.
[0014] Preferably, the bottom of the baffle is provided with a conical block.
[0015] Preferably, the baffle is a hollow structure.
[0016] Compared to existing technologies, this utility model is set around the pit, and the baffle can block the fire source to prevent the fire source from drifting out. The position of the door can be easily adjusted by turning the handle, thereby changing the size of the air inlet and outlet. When the wind force is strong, the relative distance between the doors is adjusted to control the air volume and prevent the fire source from burning too quickly and the smoke from lasting too long. Attached Figure Description
[0017] Figure 1 This is the overall structure of the present utility model;
[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0019] Figure 3 This is a top view of the present invention in use;
[0020] Figure 4 This is an enlarged schematic diagram of point B in section 3.
[0021] In the diagram: 1. Baffle, 2. Door, 3. Connecting block, 4. Rotary handle, 5. Slider, 6. Connecting rod, 7. Adjusting screw, 8. Fixing block, 9. Extension plate, 10. Conical block. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0026] like Figures 1-4 As shown, an orchard frost protection device includes two baffles 1 arranged on the left and right. The middle of the baffle 1 is arc-shaped. Doors 2 are hinged to the front and rear sides of the baffle 1. A slider 5 is slidably provided on the top of the door 2. Specifically, the top of the door 2 is provided with a sliding groove, which enables the slider 5 to slide. A connecting rod 6 is provided between the two sliders 5 on the corresponding side. The connecting rod 6 is hinged to the two sliders 5 respectively. Specifically, the slider is cylindrical, rotates and passes through the connecting rod 6. An adjusting screw 7 is threaded through one side of the connecting rod 6. One end of the adjusting screw 7 is rotatably connected to the corresponding baffle 1, and the other end is provided with a handle 4.
[0027] The working principle is that by rotating the handle, the adjusting screw 7 is rotated, which changes the position of the connecting rod 6. The connecting rod 6 drives the two doors 2 to move, changing the distance between the two doors, thereby controlling the size of the air inlet and outlet, controlling the air volume, and controlling the combustion speed.
[0028] In practical use, first dig a pit near the orchard, and then dig ventilation channels on both sides of the pit along the wind direction, as shown in the example below. Figure 1 As shown, the wind along the front-to-back direction is as follows: Figure 3Dig a pit and construct an air duct, then place the device as follows: Figure 3 As shown in the diagram, the arc-shaped position of the baffle 1 corresponds to the pit, and the position of the door 2 corresponds to the air duct. Firewood and other combustibles are filled into the pit. Depending on the wind strength, the position of the door 2 is adjusted by rotating the handle 4. When the wind is strong, the distance between the two doors 2 on the corresponding side is reduced to decrease the airflow, slow down the burning speed of the combustibles, and control the duration of smoke combustion. In addition, this device surrounds the pit, which acts as a barrier to prevent the fire from being blown near the fruit trees, causing the fruit trees to overheat and even become dangerous.
[0029] Preferably, the baffle 1 includes flat plates on the front and rear sides and an arc-shaped plate in the middle, corresponding to the pit and the air duct.
[0030] Preferably, the two doors 2 on the corresponding side can be rotated to contact each other, that is, the doors 2 can be adjusted to the minimum position to completely close the air inlet and outlet. It should be noted that the complete closure here is only relative to the doors 2, and a small amount of air can still pass through the bottom of the doors 2.
[0031] Preferably, the bottom of the baffle 1 is provided with an extension plate 9 that slides vertically. The extension plate 9 can slide downward and contact the bottom of the air duct, which can adapt to air ducts of different depths in the pit. In addition, it can completely control the air inlet and outlet and completely close when closed.
[0032] Preferably, the connecting rod 6 is a detachable structure near the middle. Since orchards generally need to arrange multiple antifreeze devices, this invention allows the two baffles 1 to be separated by separating the connecting rod 6, making it convenient to place and carry multiple baffles 1 on a vehicle.
[0033] Preferably, the connecting rod 6 comprises two rod parts, with a fixing screw hole at the end of each rod for easy disassembly and installation.
[0034] Preferably, a connecting block 3 is provided on the top of one side of the connecting rod 6. The connecting block 3 is provided with a threaded hole. The connecting rod 6 is threaded through the connecting block 3 to install an adjusting screw 7. A fixing block 8 is provided on the corresponding baffle 1. One end of the screw 7 is rotatably connected to the fixing block 8 to realize the connection between the adjusting screw 7, the connecting rod 6, and the baffle 1.
[0035] Preferably, the handle 4 is provided with anti-slip texture to facilitate the rotation operation of the handle 4.
[0036] Preferably, the bottom of the baffle 1 is provided with a conical block 10, which can be used to insert the baffle 1 into the soil, thereby improving the stability of the device.
[0037] Preferably, the baffle 1 is a hollow structure. The presence of the conical block 10 improves the stability of the device and reduces its weight to a certain extent, making it easier to carry.
[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A frost protection device for orchards, characterized in that: It includes two baffles (1) set on the left and right. The middle part of the baffle (1) is arc-shaped. Doors (2) are hinged to the front and rear sides of the baffle (1). A slider (5) is slidably provided on the top of the door (2). A connecting rod (6) is provided between the two sliders (5) on the corresponding side. The connecting rod (6) is hinged to the two sliders (5) respectively. An adjusting screw (7) is threaded through one side of the connecting rod (6). One end of the adjusting screw (7) is rotatably connected to the corresponding baffle (1), and the other end is provided with a handle (4).
2. The frost protection device for orchards according to claim 1, characterized in that: The baffle (1) includes flat plates on the front and rear sides and an arc-shaped plate in the middle.
3. The frost protection device for orchards according to claim 1, characterized in that: The two doors (2) on the corresponding side can rotate until they come into contact with each other.
4. The frost protection device for orchards according to claim 1, characterized in that: The bottom of the baffle (1) is provided with an extension plate (9) that slides vertically.
5. The frost protection device for orchards according to claim 1, characterized in that: The connecting rod (6) is detachable near the middle.
6. The frost protection device for orchards according to claim 1, characterized in that: The connecting rod (6) consists of two rod parts, with a fixing screw hole at the end of each rod.
7. The frost protection device for orchards according to claim 1, characterized in that: A connecting block (3) is provided on the top of one side of the connecting rod (6). The connecting block (3) has a threaded hole. The connecting rod (6) is threaded through the connecting block (3) and an adjusting screw (7) is threaded through it. A fixing block (8) is provided on the corresponding baffle (1). One end of the screw (7) is rotatably connected to the fixing block (8).
8. The orchard frost protection device according to claim 1, characterized in that: The handle (4) has anti-slip texture.
9. A frost protection device for orchards according to claim 1, characterized in that: The bottom of the baffle (1) is provided with a conical block (10).
10. The frost protection device for orchards according to claim 9, characterized in that: The baffle (1) is a hollow structure.