Greenhouse environment intelligent control method and system based on solar energy

Abstract

The invention discloses a greenhouse environment intelligent control method and system based on solar energy, and the system comprises a heat collection module used for collecting heat, the heat collection module comprises a solar heat collection plate, a heat collection pump and a heat collection water tank, the lower part of one side of the heat collection water tank is connected with the heat collection pump through a pipeline, and the heat collection pump is connected with the heat collection module through a pipeline; the heat collection pump is connected with a water inlet of the solar heat collection plate through a pipeline, and a water outlet of the solar heat collection plate is connected with a water inlet of the heat collection water tank through a pipeline. When the temperature of the water tank is higher than the temperature of the floor heating system or the temperature of the substrate storage box, the floor heating heat supply module operates, the substrate temperature is increased to promote growth of plant roots, the warm air system can heat greenhouse air, when the air temperature is low, the system operates in a backflushing mode, the air temperature is increased, and precise regulation and control over the greenhouse environment temperature are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat preservation systems, and in particular to a method and system for intelligently controlling a greenhouse environment based on solar energy. Background Art

[0002] With the development of agricultural modernization, greenhouse cultivation, as a highly efficient agricultural production method, is gaining increasing attention. Traditional greenhouse environmental control methods often rely on fossil energy, which is not only costly but also polluting to the environment. Solar energy, as a clean and renewable energy source, has enormous application potential in the field of greenhouse environmental control. However, existing solar greenhouse systems have many deficiencies in terms of heat collection efficiency, energy storage and utilization, and system stability, and are unable to meet the needs of modern agricultural production. The present invention aims to provide a solar-based intelligent greenhouse environment control method and system to address the above-mentioned problems. Summary of the Invention

[0003] The technical problem addressed by this invention is to provide a solar-powered intelligent greenhouse environment control method and system. The heating module intelligently distributes heat based on the temperature of different components. When the water tank temperature is higher than that of the floor heating system or the substrate storage tank, the floor heating module operates, raising the substrate temperature to promote plant root growth. The warm air system heats the greenhouse air. When the air temperature is low, the system reverses and raises the air temperature, achieving precise control of the greenhouse environment temperature.

[0004] A solar-powered greenhouse environment intelligent control method and system, comprising a heat collection module for collecting heat, the heat collection module comprising a solar heat collection panel, a heat collection pump, and a heat collection tank; a lower portion of one side of the heat collection tank is connected to the heat collection pump via a pipeline; the heat collection pump is connected to the water inlet of the solar heat collection panel via a pipeline; and a water outlet of the solar heat collection panel is connected to the water inlet of the heat collection tank via a pipeline; the solar heat collection panel is a full-surface metal microchannel integrated solar heat collection panel, and three layers of solar radiation absorption film are provided on the surface of the heat collection panel;

[0005] The system also includes a heating module, which includes a substrate storage tank, a feed pump, a water mixer, a heating pump, a floor heating system, and a warm air system. The upper part of one side of the heat collecting tank is connected to one of the heating pumps through a pipeline, the heating pump is connected to the water mixer through a pipeline, the substrate storage tank is connected to the feed pump through a pipeline, the feed pump is connected to the water mixer through a pipeline, the water mixer is used to accommodate the substrate pumped in by the feed pump, the lower part of one side of the heat collecting tank is connected to the water outlet of the warm air system through a pipeline, the upper part of one side of the heat collecting tank is connected to another heating pump through a pipeline, the heating pump is connected to the floor heating system through a pipeline, and the floor heating system is connected to the water inlet of the warm air system through a pipeline.

[0006] Furthermore, the solar heat collecting plate is formed by integrally processing a composite high thermal conductivity metal material.

[0007] Furthermore, the solar radiation absorption film layer is a metal ceramic gradient absorption film layer of AlNxOy deposited on an aluminum alloy microchannel heat absorption plate by magnetron sputtering using an aluminum target in an environment of argon and reaction gases nitrogen and oxygen.

[0008] Furthermore, the solar thermal collector panel includes an outer frame, which is a fully tempered glass / ETFE film layer / structure, and a micro-negative pressure one-way air valve is installed at the end plate of the outer frame.

[0009] Furthermore, the height of the solar collector panel from the ground is 2000mm-2300mm (determined by the height of the greenhouse), the height of the solar collector panel from the top is 1000mm-1200mm (determined by the height of the greenhouse), the height of a single solar collector panel is 680mm, and the length is 1950mm. The solar collector panel is installed in an inclined manner, and the angle between the solar collector panel and the ground is the local (installation area) latitude + 5°.

[0010] Furthermore, the heat collecting tank also includes a water temperature probe, which is connected to the heat collecting tank and is used to measure the water temperature in the heat collecting tank. It also includes a controller, the water temperature probe is a temperature sensor, the temperature sensor and the controller transmit data, and the controller controls the heating pump and the heat collecting pump.

[0011] A device for a greenhouse environment intelligent control method system based on solar energy, wherein the solar collector panels are multiple and evenly arranged, each of the solar collector panels is fixed in a mounting ring, and the mounting ring is fixedly connected to a solar collector panel support.

[0012] Furthermore, the solar collector panel support includes a bracket, a main frame, a triangular plate, a support column one and a support column two, the support column one is several and is evenly arranged in a straight line direction, the support column two is several and is evenly set in a straight line direction, the support column one and the support column two are set in parallel, the height of the support column one is greater than the height of the support column two, the support column one and the support column two are set in a one-to-one correspondence, the support column one and the support column two are respectively fixedly connected to the lower two ends of the main frame, the main frame fixes several of the brackets, the brackets and the main frame are set vertically, and the support mesh formed by the brackets and the main frame is provided with several groups of evenly arranged mounting rings along the length direction of the main frame, the mounting rings match the shape of the solar collector panel, each group of the mounting rings is several and is set in a direction perpendicular to the main frame, and one solar collector panel is installed in each group of the mounting rings.

[0013] Furthermore, the main frame is fixedly connected to the triangular plate, and the triangular plate is fixedly connected to the support column 1 / support column 2; the support column 1 and support column 2 are respectively fixedly connected to the two ends of the bottom rod, and the lower ends of the support column 1 and support column 2 are respectively inserted into the sleeve, and the sleeve is provided with a plurality of mounting holes arranged from top to bottom, the bottom end of the sleeve is fixedly connected to the base, and the four corners of the base are respectively provided with limiting holes.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] (1) The solar collector panel adopts a full-surface metal microchannel integrated design. The flow channel accounts for ≥99% of the substrate area, the medium flow layer thickness is ≤1.55mm, the flow channel volume per 1㎡ energy panel is ≥120 channels, the total effective energy collection area of the microchannel per 1㎡ energy panel is ≥1.78 square meters, and the front effective energy collection area ratio is ≥95%, which greatly improves the heat collection efficiency. At the same time, the absorption rate of the three-layer solar radiation absorption film layer is α = 0.90-0.94, and the infrared emissivity is ε = 0.07-0.12, further enhancing the absorption capacity of solar radiation.

[0016] (2) The heating module can intelligently distribute heat according to the temperature of different components. When the water tank temperature is higher than the temperature of the floor heating system or the substrate storage box, the floor heating module will operate to increase the substrate temperature to promote the growth of plant roots. The warm air system can heat the greenhouse air. When the air temperature is low, the system will backfire to increase the air temperature, thus achieving precise control of the greenhouse environment temperature.

[0017] (3) The solar collector plate is made of composite high thermal conductivity metal material and is processed and formed in an integrated manner. The plate core has a pressure resistance of ≥3MPa and is welded in an integral manner using low-energy electromagnetic induction, which ensures the stability and durability of the equipment. The design of the micro-negative pressure one-way air valve ensures that the system always maintains a micro-negative pressure to avoid damage to the equipment due to air expansion.

[0018] (4) The water temperature in the heat collecting tank is monitored in real time through the water temperature probe, and the data is transmitted to the controller. The controller controls the operation of the heating pump and the heat collecting pump according to the water temperature, realizing the intelligent and automated control of the greenhouse environment.

[0019] (5) The solar collector support is well designed, with the mounting ring matching the shape of the solar collector, making it easy to install and secure the collector. Furthermore, the height difference between support columns 1 and 2, as well as the tilted mounting of the solar collector, ensure that the collector can fully receive solar radiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of this application and constitute a part of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation on this application. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the drawings:

[0021] Figure 1 It is the system principle diagram of the present invention;

[0022] Figure 2 The three-dimensional solar heat collecting panel installation part of the present invention Figure 1 ;

[0023] Figure 3 The three-dimensional solar heat collecting panel installation part of the present invention Figure 2 ;

[0024] Figure 4 This is a partial photo of the present invention in use.

[0025] In the figure: 1. Solar collector panel; 2. Bracket; 3. Mounting ring; 4. Triangle plate; 5. Main frame; 6. Support column 1; 7. Support column 2; 8. Sleeve; 9. Base; 10. Water mixer; 11. Warm air system; 12. Floor heating system; 13. Heating pump; 14. Heat collection tank; 15. Heat collection pump; 16. Matrix storage tank; 17. Feed pump. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] A solar-powered greenhouse environment intelligent control method and system includes a heat collection module for collecting heat. The heat collection module includes a solar heat collecting panel 1, a heat collecting pump 15, and a heat collecting tank 14. A lower portion of one side of the heat collecting tank 14 is connected to the heat collecting pump 15 via a pipeline. The heat collecting pump 15 is connected to the water inlet of the solar heat collecting panel 1 via a pipeline. The water outlet of the solar heat collecting panel 1 is connected to the water inlet of the heat collecting tank 14 via a pipeline. The solar heat collecting panel 1 is a full-surface metal microchannel integrated solar heat collecting panel 1, and three layers of solar radiation absorption film are provided on the surface of the heat collecting panel.

[0028] The system also includes a heating module, which includes a water mixer 10, a feed pump 17, a substrate storage tank 16, a heating pump 13, a floor heating system 12, and a warm air system 11. The upper part of one side of the heat collecting tank 14 is connected to one of the heating pumps 13 through a pipeline, the heating pump 13 is connected to the water mixer 10 through a pipeline, the substrate storage tank 16 is connected to the feed pump 17 through a pipeline, the feed pump 17 is connected to the water mixer 10 through a pipeline, the water mixer 10 is used to accommodate the substrate (hydroponic culture solution) pumped in by the feed pump 17, the lower part of one side of the heat collecting tank 14 is connected to the water outlet of the warm air system 11 through a pipeline, the upper part of one side of the heat collecting tank 14 is connected to another heating pump 13 through a pipeline, the heating pump 13 is connected to the floor heating system 12 through a pipeline, and the floor heating system 12 is connected to the water inlet of the warm air system 11 through a pipeline.

[0029] In this embodiment, when the temperature of the solar thermal collector panel 1 is higher than the temperature of the heat collection tank 14, the heat collection pump 15 works to pump the hot water in the solar thermal collector panel 1 into the heat collection tank 14. The solar thermal collector panel 1 adopts SCEF technology, and the heat collection panel adopts PVD technology to form three layers of special high-efficiency solar radiation absorption film on the surface of the substrate;

[0030] In this embodiment, the substrate storage tank 16 is used to hold hydroponic culture solution, and the water mixer 10 is connected to the culture container through a pipeline. When the temperature of the solar collector panel 1 is higher than the temperature of the water storage tank, the heat collection module operates to transfer heat to the heat storage device; when the water tank temperature is higher than the temperature of the floor heating system 12 or the substrate 16 storage box, the floor heating heating module operates to increase the temperature of the culture solution in the substrate storage tank 16 to achieve the increase in the temperature of the plant roots, and the warm air system 11 can heat the greenhouse air; when the air temperature is low, the system backwashes to increase the air temperature.

[0031] Specifically, the solar collector panel 1 absorbs solar radiation, converts solar energy into heat energy, and heats the water in the collector panel. When the temperature of the solar collector panel 1 is higher than that of the water collection tank 14, the heat pump 15 starts to work, pumping the hot water in the solar collector panel 1 into the water collection tank 14. The solar collector panel 1 uses SCEF technology and PVD technology to form three layers of special high-efficiency solar radiation absorption film on the surface of the substrate to enhance its absorption capacity of solar radiation. In addition, the collector panel is made of composite high-thermal conductivity metal materials and has a reasonable flow channel design, which improves the heat transfer efficiency.

[0032] When the water tank temperature exceeds that of the floor heating system 12 or the substrate storage tank 16, the heating pump 13 activates, transferring hot water from the heat collection tank 14 to the water mixer 10, raising the temperature of the substrate storage tank 16 and promoting plant root growth. Simultaneously, a portion of the hot water passes through the floor heating system 12 and the warm air system 11, heating the greenhouse air and raising the temperature. If the air temperature is low, the system backfires, transferring heat into the greenhouse through the warm air system 11, raising the air temperature.

[0033] The solar heat collecting plate 1 is formed by integrally processing a composite high-thermal-conductivity metal material.

[0034] In this embodiment, the flow channel of the solar thermal collector panel 1 accounts for ≥99% of the substrate area, and the medium flow layer thickness is ≤1.55mm; the flow channel volume of 1㎡ energy panel is ≥120 channels, and the total effective energy collection area of the micro-channel of 1㎡ energy panel is ≥1.78 square meters; the flow layer resistance is small, the energy absorption efficiency is high, and the effective energy collection area ratio of the front of the energy panel is ≥95%; the energy panel is fully automatically and efficiently assembled, low-energy electromagnetic induction integral welding is used, and the plate core pressure resistance is ≥3MPa; the energy panel size can be freely designed and adjusted, the cascade method is flexible, and the medium stroke is controllable; the system power supply temperature range covers 50℃-300℃.

[0035] The solar radiation absorption film layer is a metal ceramic gradient absorption film layer of AlNxOy deposited on an aluminum alloy microchannel heat absorption plate by magnetron sputtering using an aluminum target in an environment of argon and reaction gases nitrogen and oxygen.

[0036] In this embodiment, the preparation process of the solar radiation absorption film layer adopts measures such as bombardment cleaning of the metal and negative bias voltage to ensure good bonding between the film layer and the substrate, and deposits a layer of aluminum oxide film on the surface of the film layer, which has an anti-reflection protection effect, and its absorption rate α = 0.90-0.94, and infrared emissivity ε = 0.07-0.12.

[0037] The solar thermal collector panel 1 includes an outer frame, which is a fully tempered glass / ETFE film layer / structure, and a micro-negative pressure one-way air valve is installed at the end plate of the outer frame.

[0038] In this embodiment, when the solar thermal collecting panel 1 is heated, the air expands and increases in volume, and the air is discharged outward through the micro-negative pressure one-way air valve, so that the system always maintains a micro-negative pressure.

[0039] The height of the solar collector panel 1 from the ground is 2000mm-2300mm (determined by the height of the greenhouse), the height of the solar collector panel 1 from the top is 1000mm-1200mm (determined by the height of the greenhouse), the height of a single solar collector panel 1 is 680mm, and the length is 1950mm. The solar collector panel 1 is installed in an inclined installation manner, and the angle between the solar collector panel 1 and the ground is the local (installation area) latitude + 5°.

[0040] The heat collecting tank 14 also includes a water temperature probe connected to the heat collecting tank 14 for measuring the water temperature within the heat collecting tank 14. The water temperature probe also includes a controller. The temperature probe serves as a temperature sensor, and the controller transmits data to the controller. The controller controls the heating pump 13 and the heat collecting pump 15. The controller starts and stops the heating pump 13 and the heat collecting pump 15 based on the water temperature data, thereby achieving intelligent control of the heat collection and heating process.

[0041] A device for a solar-based greenhouse environment intelligent control method and system, wherein the solar collector panels 1 are multiple and evenly arranged, and each solar collector panel 1 is fixed in a mounting ring 3, and the mounting ring 3 is fixedly connected to the support of the solar collector panel 1;

[0042] The solar collector panel 1 support includes a bracket 2, a main frame 5, a triangular plate 4, a support column 1 6 and a support column 2 7, the support column 1 6 is several and evenly arranged in a straight line direction, the support column 2 7 is several and evenly set in a straight line direction, the support column 1 6 and the support column 2 7 are arranged in parallel, the height of the support column 1 6 is greater than the height of the support column 2 7, the support column 1 6 and the support column 2 7 are arranged one by one, the support column 1 6 and the support column 2 7 are respectively fixedly connected to the lower ends of the main frame 5, the main frame 5 fixes several of the brackets 2, the brackets 2 and the main frame 5 are arranged vertically, and the support mesh formed by the bracket 2 and the main frame 5 is provided with several groups of evenly arranged mounting rings 3 along the length direction of the main frame 5, the mounting rings 3 match the shape of the solar collector panel 1, each group of the mounting rings 3 is several and arranged in a direction perpendicular to the main frame 5, and each group of the mounting rings 3 is installed with one of the solar collector panels 1;

[0043] The main frame 5 is fixedly connected to the triangular plate 4, and the triangular plate 4 is fixedly connected to the support column 1 6 / support column 2 7;

[0044] The support column 1 6 and the support column 2 7 are respectively fixedly connected to the two ends of the bottom rod, and the lower ends of the support column 1 6 and the support column 2 7 are respectively inserted into the sleeve 8. The sleeve 8 is provided with a plurality of mounting holes arranged from top to bottom. The bottom end of the sleeve 8 is fixedly connected to the base 9, and the four corners of the base 9 are respectively provided with limiting holes.

[0045] The method of use of the present invention is:

[0046] According to the height of the greenhouse, determine the height of the solar collector panel 1 from the ground and from the top, insert the lower ends of the support column 1 6 and the support column 2 7 of the solar collector panel 1 into the sleeve 8 and fix them through the mounting holes. The mounting holes provided in the sleeve 8 facilitate adjusting the height of the support column 1 6 and the support column 2 7 fixed to the sleeve 8 as needed, fix the base 9 to the ground, and prevent the base 9 from moving through the limit holes;

[0047] Install the solar heat collecting panel 1 in the mounting ring 3 to ensure that the heat collecting panel and the mounting ring 3 are tightly fitted; fix the mounting ring 3 on the bracket 2 to complete the installation of the solar heat collecting panel 1.

[0048] Connect the pipes of the heat collection module and the heating module, start the system, and the solar heat collection panel 1 begins to absorb solar radiation and heat the water in the heat collection panel. When the temperature of the solar heat collection panel 1 is higher than the temperature of the heat collection tank 14, the heat collection pump 15 automatically starts and pumps hot water into the heat collection tank 14;

[0049] The water temperature probe monitors the water temperature in the heat collection tank 14 in real time and transmits the data to the controller. When the water tank temperature is higher than the temperature of the floor heating system 12 or the substrate storage tank 16, the controller starts the heating pump 13 to deliver hot water to the water mixer 10, the floor heating system 12 and the warm air system 11 to heat the substrate 16 and the greenhouse air.

[0050] When the greenhouse air temperature is low, the system backflows and the warm air system 11 delivers heat into the greenhouse to increase the air temperature.

[0051] The above disclosure is only a specific embodiment of the present invention, but the present invention is not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A solar-powered greenhouse environment intelligent control method and system, comprising a heat collection module for collecting heat, characterized in that: The heat collection module comprises a solar heat collecting panel (1), a heat collecting pump (15) and a heat collecting tank (14); a lower portion of one side of the heat collecting tank (14) is connected to the heat collecting pump (15) via a pipeline; the heat collecting pump (15) is connected to the water inlet of the solar heat collecting panel (1) via a pipeline; a water outlet of the solar heat collecting panel (1) is connected to the water inlet of the heat collecting tank (14) via a pipeline; the solar heat collecting panel (1) is a full-surface metal microchannel integrated solar heat collecting panel (1); and three layers of solar radiation absorption film are provided on the surface of the heat collecting panel; The system further comprises a heating module, which comprises a matrix storage tank (16), a feed pump (17), a matrix (16) storage box, a heating pump (13), a floor heating system (12), and a warm air system (11). An upper portion of one side of the heat collecting tank (14) is connected to the heating pump (13) via a pipeline, the heating pump (13) is connected to the water mixer (10) via a pipeline, the matrix storage tank (16) is connected to the feed pump (17) via a pipeline, and the feed pump (1 7) The water mixer (10) is connected via a pipeline, the water mixer (10) is used to accommodate the matrix pumped in by the feed pump (17), the lower part of one side of the heat collecting tank (14) is connected to the water outlet of the warm air system (11) via a pipeline, the upper part of one side of the heat collecting tank (14) is connected to another heating pump (13) via a pipeline, the heating pump (13) is connected to the floor heating system (12) via a pipeline, and the floor heating system (12) is connected to the water inlet of the warm air system (11) via a pipeline.

2. The solar-powered greenhouse environment intelligent control method and system according to claim 1, characterized in that: The solar heat collecting plate (1) is formed by integrally processing a composite high-heat-conductivity metal material.

3. The solar-powered greenhouse environment intelligent control method and system according to claim 2, characterized in that: The solar radiation absorption film layer is a metal ceramic gradient absorption film layer of AlNxOy deposited on an aluminum alloy microchannel heat absorption plate by magnetron sputtering using an aluminum target in an environment of argon and reaction gases nitrogen and oxygen.

4. The method and system for intelligent greenhouse environment control based on solar energy according to claim 3, characterized in that: The solar heat collecting panel (1) comprises an outer frame, the outer frame is a fully tempered glass / ETFE film layer / structure, and a micro-negative pressure one-way air valve is installed at the end plate of the outer frame.

5. The method and system for intelligent control of greenhouse environment based on solar energy according to claim 4, characterized in that: The height of the solar heat collecting panel (1) from the ground is 2000mm-2300mm, the height of the solar heat collecting panel (1) from the top is 1000mm-1200mm, the height of a single solar heat collecting panel (1) is 680mm, and the length is 1950mm. The solar heat collecting panel (1) is installed in an inclined installation manner, and the angle between the solar heat collecting panel (1) and the ground is the local latitude +5°.

6. The solar-powered greenhouse environment intelligent control method and system according to claim 5, characterized in that: The heat collecting tank (14) further comprises a water temperature probe, which is connected to the heat collecting tank (14) and is used to measure the water temperature in the heat collecting tank (14). The water temperature probe also comprises a controller, wherein the water temperature probe is a temperature sensor, and the temperature sensor and the controller perform data transmission, and the controller controls the heating pump (13) and the heat collecting pump (15).

7. The device for a solar-based greenhouse environment intelligent control method system according to claim 6, characterized in that: There are a plurality of solar heat collecting panels (1) which are evenly arranged, and each solar heat collecting panel (1) is fixed in a mounting ring (3), and the mounting ring (3) is fixedly connected to a solar heat collecting panel (1) support.

8. The device for a solar-based greenhouse environment intelligent control method system according to claim 7, characterized in that: The solar collector plate (1) support comprises a bracket (2), a main frame (5), a triangular plate (4), a support column 1 (6) and a support column 2 (7), wherein the support column 1 (6) is a plurality of support columns and is evenly arranged along a straight line direction, the support column 2 (7) is a plurality of support columns and is evenly arranged along a straight line direction, the support column 1 (6) and the support column 2 (7) are arranged in parallel, the height of the support column 1 (6) is greater than the height of the support column 2 (7), the support column 1 (6) and the support column 2 (7) are arranged in a one-to-one correspondence, and the support column 1 (6) and the support column 2 (7) are respectively fixedly connected. The main frame (5) is connected to both ends of the lower side, and the main frame (5) fixes a plurality of the brackets (2). The brackets (2) and the main frame (5) are arranged vertically. A plurality of groups of evenly arranged mounting rings (3) are arranged on the support mesh formed by the brackets (2) and the main frame (5) along the length direction of the main frame (5). The mounting rings (3) match the shape of the solar heat collecting panel (1). Each group of the mounting rings (3) is a plurality of and is arranged in a direction perpendicular to the main frame (5). One solar heat collecting panel (1) is installed in each group of the mounting rings (3).

9. The device for a solar-based greenhouse environment intelligent control method system according to claim 7, characterized in that: The main frame (5) is fixedly connected to the triangular plate (4), and the triangular plate (4) is fixedly connected to the support column 1 (6) / support column 2 (7); The support column 1 (6) and the support column 2 (7) are respectively fixedly connected to the two ends of the bottom rod, and the lower ends of the support column 1 (6) and the support column 2 (7) are respectively inserted into the sleeve (8), and the sleeve (8) is provided with a plurality of mounting holes arranged from top to bottom. The bottom end of the sleeve (8) is fixedly connected to the base (9), and the four corners of the base (9) are respectively provided with limiting holes.

Images