Agricultural greenhouse temperature increasing device

Abstract

The utility model relates to the technical field of greenhouse temperature increasing equipment, in particular to an agricultural greenhouse temperature increasing device which comprises an inner-layer combustion cylinder and an outer-layer outer sleeve which are matched in a rotating mode. A combustion table is arranged in the combustion cylinder and used for combusting fuel, and a sealing cover with an adjustable air outlet is installed on the top of the combustion cylinder. Matched air inlet structures are arranged on the side walls of the combustion cylinder and the outer sleeve, the size of an air inlet can be changed along with relative rotation of the combustion cylinder and the outer sleeve to adjust air inlet volume and even closing, a fixed drill bit is arranged at the bottom of the combustion cylinder and can be matched with a rotating handle arranged at the top of the combustion cylinder to rotate the fixed drill bit, and the combustion cylinder is fixedly arranged on the ground. The structure is simple, installation and arrangement are convenient, fixation is firm, and the risk that fuel leaks due to the fact that the combustion cylinder topples over is avoided; and when fire needs to be turned off, only the air inlet and the air outlet need to be simultaneously closed, direct contact with a fire source is not needed, and use is safe and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of greenhouse temperature-increasing equipment, in particular to an agricultural greenhouse temperature-increasing device. Background Art

[0002] Greenhouse cultivation is a commonly used vegetable and fruit planting facility. It can provide insulation for vegetables and fruits in seasons with lower temperatures, and provide cold, drought and wind and sand resistance for crops in high-altitude and arid areas, expanding the scope and time of agricultural product planting. Especially in areas with colder temperatures, using greenhouses to grow vegetables and fruits can be harvested earlier than open-air planting, and can also extend the crop growth period and increase crop planting volume and yield.

[0003] When a cold wave occurs and causes the temperature to drop sharply, it is necessary to take cold-resistant and warming measures in the greenhouse to prevent crops from suffering from frost damage and reduced yields; common greenhouse warming equipment is mostly large combustion furnaces with larger volumes. For example, patent application number CN202120414878.5 discloses a greenhouse temperature control device based on alcohol charcoal combustion, including a main device heating device, a combustion device, an adding device, a control device and other devices, which need to be fixedly installed on the ground for use; in some areas where cold waves are less common, the utilization rate of this large combustion furnace structure is low, and it occupies a large area when it is not needed, which is not suitable for long-term use. Installation and use; there is also a patent with application number CN202122413222.4, which discloses a greenhouse warmer, including an alcohol drip control structure, a heating structure and a cotton wool installation structure. The alcohol drip control structure is installed at the top of the greenhouse, and the heating structure is placed on the soil surface in the greenhouse. The heating structure is installed at the bottom of the alcohol drip control structure and connected to the alcohol drip control structure; although the heating structure used in this patent is smaller in size and more flexible in installation and use, it lacks a reasonable fixed structure and is prone to tipping over, resulting in fuel leakage and fire, endangering the safety of life and property. Utility Model Content

[0004] The utility model aims to provide an agricultural greenhouse heating device which is compact, flexible, easy to carry and set, and firmly fixed and safe to use.

[0005] Based on the above purpose, the utility model adopts the following technical solutions:

[0006] An agricultural greenhouse warming device includes a combustion tube, characterized in that: an outer sleeve is provided outside the combustion tube, and the outer sleeve is rotatably connected to the combustion tube; a combustion table is provided inside the combustion tube, and the combustion table is made of heat-resistant material; an opening is provided at the top of the combustion tube, and a sealing cover is provided at the opening at the top of the combustion tube; a bottom plate is provided at the bottom of the outer sleeve, the top of the combustion tube is arranged beyond the outer sleeve, a rotating handle is provided at the top of the combustion tube beyond the outer sleeve, and a fixed drill bit is provided at the bottom of the combustion tube.

[0007] Preferably, an inner air inlet is provided on the side of the combustion tube, and an outer air inlet matching the inner air inlet is provided on the side of the outer sleeve; the inner air inlet and the outer air inlet have the same height.

[0008] Preferably, the cover is connected to the top opening of the combustion tube via a hinge structure, and an air outlet is provided on the cover; a sealing ring is provided on the edge of the cover.

[0009] Preferably, a turntable is provided on the cover, a turntable air outlet matched with the air outlet is provided on the turntable, an indicating arrow mark is provided on the turntable matched with the turntable air outlet, and an indicating mark is provided on the cover.

[0010] Preferably, a handle is provided on the outer side surface of the outer sleeve, and a heat insulating sleeve is provided on the handle.

[0011] Preferably, four inner air inlets and four outer air inlets are evenly distributed along the central axis of the combustion tube, and the inner air inlet and the outer air inlet are arranged 5-20 cm above the combustion table, and the curvature of the inner air inlet and the outer air inlet is not greater than 0.25π.

[0012] The beneficial effects of the utility model are:

[0013] The utility model has a simple structure and low production and marketing costs, and its small size makes it easy to promote and use in small-scale greenhouse planting. The utility model adopts an inner and outer layered cylindrical structure, and the inner and outer layers can rotate relative to each other. On the basis of this structure, a fixed drill bit structure is arranged at the bottom of the inner combustion tube, so that the device can be easily drilled into the ground for installation. Compared with the traditional installation method of using a hammer or other tools to hammer the pile barrel into the ground for fixation, or digging a pit and then burying it, the utility model is simple to install, and does not require additional tools to knock the combustion tube into the ground or dig a pit for burying it. At the same time, since a drill bit is used to drill into the ground, the contact area with the ground soil is larger, and it is fixed more firmly, reducing the risk of the combustion tube tipping over during use, causing internal fuel leakage and causing a fire.

[0014] The utility model adopts a structure in which the inner and outer layers are separated and can rotate relatively. A matching air inlet structure is arranged at the bottom of the inner and outer layers. After the combustion tube is drilled into the bottom surface and fixed, the angle of the outer sleeve can be rotated to adjust the relative positions of the inner and outer air inlets to adjust the air intake amount when the fuel in the tube is burned, thereby controlling the fuel combustion rate.

[0015] The utility model provides a sealing cover at the top of the combustion cylinder, and an air outlet is provided on the sealing cover, which is convenient for discharging waste gas generated by combustion in the cylinder, and guiding hot air in the combustion cylinder to flow upward and be discharged, and cooperates with the air inlet at the bottom to form a stable air duct, so as to avoid harmful waste gas generated by incomplete combustion of fuel; a turntable is provided on the sealing cover, and the turntable can be used to open or close the air outlet, when it is necessary to extinguish a fire, the outer sleeve is rotated so that the air inlets of the inner and outer layers do not overlap each other to close the air inlet, and when the turntable is rotated to close the air outlet, the combustion cylinder will be isolated from the outside air, and the burning fuel will be extinguished after the oxygen in the combustion cylinder is exhausted, so as to achieve contactless and safe fire extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is the front view of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the outer sleeve of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the combustion tube of the utility model;

[0020] Figure 5 for Figure 2 Sectional view at the AA mark in the middle;

[0021] Figure 6 This is a partial enlarged view of the structure of the cover of the utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the utility model when the cover is opened;

[0023] Figure 8 It is a structural schematic diagram of the utility model when the air outlet at the sealing cover is closed.

[0024] In the figure: outer sleeve 1; bottom plate 11; outer air inlet 12; handle 13; combustion tube 2; rotating handle 21; fixed drill bit 22; inner air inlet 23; cover 3; turntable 31; turntable handle 32; air outlet 33; turntable air outlet 34. DETAILED DESCRIPTION

[0025] The following is a further explanation of the present invention in conjunction with specific embodiments. Figure 1 As shown, this embodiment is a warming device used in an agricultural greenhouse, mainly comprising a combustion tube 2 for burning fuel to provide a heat source, an outer sleeve 1 is sleeved on the outer periphery of the combustion tube 2, and the outer sleeve 1 and the combustion tube 2 are rotatably connected through an annular groove so that the two can rotate relative to each other and cannot slide relative to each other.

[0026] The bottom of the outer sleeve 1 is provided with a circle of circular plate-shaped bottom plate 11, and a hole is opened at the bottom center of the bottom plate 11 so that the bottom of the combustion tube 2 can pass through the bottom plate 11; the bottom of the combustion tube 2 is provided with a fixed drill bit 22, such as Figure 2 As shown, the fixed drill bit 22 can cooperate with the rotation of the combustion tube 2 to drill the device into the ground in the greenhouse for fixation; the top of the combustion tube 2 is also set beyond the outer sleeve 1, and a pair of rotating handles 21 are set at the part that protrudes from the top of the combustion tube 2; when the device needs to be installed, the combustion tube 2 can be rotated by rotating the handle 21, thereby driving the fixed drill bit 22 to drill the combustion tube 2 into the ground for fixation.

[0027] like Figure 3 As shown, an outer air inlet 12 is provided on the outer sleeve 1. In this embodiment, four outer air inlets 12 are evenly distributed on the side of the outer sleeve 1 around the central axis. The arc of the projection of each outer air inlet 12 on the cross section of the outer sleeve 1 does not exceed 0.25π, that is, the angle α between the connecting line of its two end points and the center of the cross section does not exceed 45°. Figure 5 As shown; when the outer sleeve 1 and the combustion sleeve 2 rotate relative to each other, the overlapping part of the outer air inlet 12 and the inner air inlet 23 forms an air inlet, and the size of the air inlet changes with the overlapping part of the opening formed by the relative rotation of the inner and outer sleeves, and when the outer air inlet 12 and the inner air inlet 23 do not overlap at all, the air inlet is closed; the number of the outer air inlet 12 and the inner air inlet 23 can be n, and the angle of each angle α must not exceed 180° / n, so that the air inlet can be closed by relatively rotating the inner and outer sleeves.

[0028] A combustion table is arranged at the inner bottom of the combustion tube 2. The combustion table is made of heat-resistant material and is used to carry fuel for combustion. The fuel can be liquid or solid fuel, such as alcohol and solid alcohol. If liquid fuel is used, the amount of fuel added must not exceed a certain height below the air inlet. The air inlet is positioned 5-20 cm above the combustion table, so that the air inlet is located at the bottom of the combustion tube 2 close to the fuel, providing fresh air for the combustion of the fuel.

[0029] like Figure 4 As shown, an opening is provided at the top of the combustion tube 2, a cover 3 is provided at the opening, and an adjustable air outlet structure is provided on the cover; Figure 6 As shown, the cover 3 is provided with a turntable 31, and the turntable 31 is provided with a turntable handle 32, and the turntable 31 can be rotated by the turntable handle 32; Figure 7 As shown, the cover 3 is provided with an air outlet 33, which is a through-hole structure, and the turntable 31 is also provided with a turntable air outlet 34 structure that matches the air outlet 33 on the cover 3; similar to the air inlet structure, when the turntable 31 is rotated, as shown in FIG. Figure 8As shown, the relative positions of the air outlet 33 and the turntable air outlet 34 will be rotated relative to each other to open or close the air outlet; when the air outlet 33 is aligned with the position of the turntable air outlet 34, the air outlet will be opened to allow the upward hot air generated during combustion to be discharged, thereby maintaining the stability of the airflow in the combustion tube 2, which is beneficial to the stable air intake at the air inlet, maintaining the full combustion of the fuel and avoiding the production of harmful substances; and when it is necessary to stop the combustion and extinguish the fire, it is only necessary to close the air inlet and the air outlet at the same time to block the new air from entering the combustion tube 2, and actively extinguish the fire quickly and safely; marks are respectively provided on the cover 3 and the turntable 31, which can facilitate the confirmation of the opening and closing state of the air outlet, that is, when the arrow mark on the turntable 31 is aligned with the short straight line mark on the cover 3, the air outlet is in an open state, and when the short straight line mark is between the two arrow marks, it is in a closed state.

[0030] When this embodiment is actually used, after selecting the setting position, the device is placed at the predetermined setting position; the operator can step on the base plate 11 to provide a vertical downward force for the device, and then rotate the combustion tube 2 by turning the handle 21, thereby rotating the fixed drill bit 22; with the rotation of the fixed drill bit 22 and the downward pressure applied by the base plate 11, the fixed drill bit 22 can be drilled into the ground to fix the device; after the device is drilled into the base plate 11 to a degree close to the ground, fuel can be loaded and used.

[0031] After opening the cover 3, fuel can be poured into the combustion table in the combustion tube 2 from the top opening; the outer sleeve 1 can be rotated by the handle 13 while keeping the combustion tube 2 stationary; the outer sleeve 1 is rotated to the extent that the outer air inlet 12 overlaps the inner air inlet 23, and the air inlet is opened, the fuel in the combustion tube 2 can be ignited, and then the cover 3 is closed; after closing the cover 3, the turntable 31 is rotated to align the arrow mark with the short straight line mark, that is, the state of opening the air outlet, and keeping both the air inlet and the air outlet open can maintain the continuous combustion operation of the device; the combustion firepower can be adjusted by rotating the outer sleeve 1 and adjusting the opening size of the air inlet. When the maximum firepower is required, the outer air inlet 12 and the inner air inlet 23 are completely overlapped to maximize the air inlet size. The maximum combustion firepower can be maintained by maximizing the air intake volume; if the firepower needs to be reduced, the outer sleeve 1 is rotated to reduce the overlapping area of ​​the outer air inlet 12 and the inner air inlet 23. Even if the air inlet size is reduced, the air intake volume can be reduced, thereby reducing the combustion firepower.

[0032] When the device needs to be shut down for extinguishing a fire, the outer sleeve 1 is rotated by the handle 13 to close the air inlet, and the handle 21 is simultaneously rotated to close the air outlet. At this time, the interior of the combustion tube 2 is isolated from the outside air, and no new air enters the combustion tube 2, so the fire can be extinguished quickly and safely.

[0033] The above description is only a further explanation of the present invention in combination with specific embodiments. All descriptions do not limit the protection scope of the present invention. Any changes or replacement solutions that can be easily thought of by technicians in this field within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An agricultural greenhouse temperature increasing device, comprising a combustion tube, characterized in that: An outer sleeve is provided outside the combustion barrel, and the outer sleeve is rotatably connected to the combustion barrel; a combustion table is provided inside the combustion barrel, and the combustion table is made of heat-resistant material; an opening is provided at the top of the combustion barrel, and a sealing cover is provided at the opening at the top of the combustion barrel; a bottom plate is provided at the bottom of the outer sleeve, the top of the combustion barrel is arranged beyond the outer sleeve, a rotating handle is provided at the top of the combustion barrel exceeding the outer sleeve, and a fixed drill bit is provided at the bottom of the combustion barrel.

2. The agricultural greenhouse heating device according to claim 1, characterized in that: An inner air inlet is arranged on the side of the combustion tube, and an outer air inlet matching the inner air inlet is arranged on the side of the outer sleeve; the inner air inlet and the outer air inlet have the same height.

3. The agricultural greenhouse heating device according to claim 2, characterized in that: The sealing cover is connected to the top opening of the combustion tube through a hinge structure, and an air outlet is arranged on the sealing cover; a sealing ring is arranged on the edge of the sealing cover.

4. The agricultural greenhouse heating device according to claim 3 is characterized in that: The cover is provided with a turntable, the turntable is provided with a turntable air outlet matched with the air outlet, the turntable is provided with an indicating arrow mark matched with the turntable air outlet, and the cover is matched with an indicating mark.

5. The agricultural greenhouse heating device according to claim 4 is characterized in that: A handle is arranged on the outer side surface of the outer sleeve, and a heat insulating sleeve is arranged on the handle.

6. The agricultural greenhouse temperature increasing device according to claim 2, characterized in that: There are four inner air inlets and outer air inlets evenly distributed along the central axis of the combustion tube, and the inner air inlet and the outer air inlet are arranged 5-20 cm above the combustion table, and the curvature of the inner air inlet and the outer air inlet is not greater than 0.25π.

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