A solar-powered modular river management method

Abstract

The invention discloses a modular river channel management method driven by solar energy, which belongs to the field of river channel management. This scheme can achieve that when managing the river channel, a pull rod is pulled to sleeve a biochar plate on the outside of a box body; when the fixing rod is aligned with the fixing groove, the pull rod is loosened to fix the biochar plate on the outside of the box body, thereby achieving the purpose of adsorbing river sewage; the solar panel absorbs sunlight and converts the solar energy into electrical energy to drive the motor to rotate; the motor can drive the turbine to rotate, thereby achieving the purpose of the box body driving the biochar plate to move in the river channel, thereby improving the management efficiency of the river channel; when the temperature in the box body changes, the second spring extends as the temperature rises and drives the resistance block to press the pressure-sensitive switch; the power is turned on to change the magnetic field near the iron core, and the armature is sucked to open the cover plate for convenient heat dissipation; at the same time, it can prevent the heat dissipation holes from being exposed to the outside for a long time, causing water to flow into the inside of the box body.

Description

Technical Field

[0001] The present invention relates to the field of river management, and more specifically, to a modular river management method driven by solar energy. Background Art

[0002] In the process of urban development, rivers have been seriously polluted, the water quality has become smelly, the self-purification ability has decreased, and the ecological environment of the river has also been destroyed, losing the ecological balance. Some rivers have poor circulation, low dissolved oxygen content in the water, and aquatic plants and animals do not have a suitable living environment, resulting in the river gradually losing its self-purification ability. At this time, a modular river management method is needed to plan the management of the river. The existing modular river management method still has certain problems, which brings certain inconveniences to the use of modular river management methods.

[0003] However, in the process of using most modular river management methods, most of them treat sewage through the biochemical and adsorption functions of biochar modules. The location of the biochar modules is relatively fixed and difficult to move, and the treatment efficiency is low. Therefore, there is an urgent need for technology that can improve the structure of modular river management methods to improve this equipment. Summary of the invention

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a modular river management method driven by solar energy, which can be achieved when the river is being managed by pulling the pull rod to sleeve the biochar plate on the outside of the box. When the fixing rod is aligned with the fixing groove, the pull rod is released to fix the biochar plate on the outside of the box, thereby achieving the purpose of adsorbing river sewage. The solar panel absorbs sunlight and converts solar energy into electrical energy to drive the motor to rotate. The motor can drive the turbine to rotate, thereby achieving the purpose of the box driving the biochar plate to move in the river, thereby improving the management efficiency of the river. When the temperature in the box changes, the second spring extends as the temperature rises and drives the resistance block to press the pressure-sensitive switch. The power is turned on to change the magnetic field near the iron core, which attracts the armature to open the cover plate for heat dissipation. At the same time, it can prevent the heat dissipation holes from being exposed to the outside for a long time, causing water to flow into the inside of the box.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A solar-powered modular river management method comprises the following steps:

[0009] S1. The biochar plate is sleeved on the outside of the box module to provide a carbon source, which is helpful for denitrification and has biochemical and adsorption functions;

[0010] S2, planting aquatic plants in the cultivation holes in the biochar plate to treat the sewage through the aquatic plants;

[0011] S3. By converting solar energy into electrical energy, the movement of the box module is promoted, so that the box module drives the biochar plate to treat different positions of the river.

[0012] Furthermore, the box module in S1 includes a box body, a solar panel is fixedly connected to the top of the box body, a battery is installed on the inner bottom wall of the box body, a motor is installed on the left side of the inner bottom wall of the box body near the battery, the output end of the motor is fixedly connected to a turbine, and the turbine is located outside the box body, biochar plates are provided at the front and rear ends of the box body, a limit installation mechanism is provided between the box body and the biochar plate, a slider is fixedly connected to one end of the biochar plate close to the box body, a fixing groove is drilled at one end of the slider away from the biochar plate, a plurality of water diversion holes are drilled on the outer side of the biochar plate, a second spring is fixedly connected to the inner top wall of the box body, a block is fixedly connected to the bottom end of the second spring, a pressure-sensitive switch is provided on the side of the inner wall of the box body corresponding to the block, a heat dissipation hole is drilled at the top of the box body, and a fixed groove is drilled at the inner wall of the heat dissipation hole. A filter is fixedly connected to the box, and a magnetic adsorption mechanism is provided on one side of the top of the box near the filter, so that when the river is being managed, the pull rod can be pulled to sleeve the biochar plate on the outside of the box, and when the fixing rod is aligned with the fixing groove, the pull rod can be loosened to fix the biochar plate on the outside of the box, so as to achieve the purpose of adsorbing river sewage, and the solar panel absorbs sunlight and converts solar energy into electrical energy to drive the motor to rotate. The motor can drive the turbine to rotate, so as to achieve the purpose of the box driving the biochar plate to move in the river, thereby improving the management efficiency of the river. When the temperature in the box changes, the second spring extends as the temperature rises and drives the resistance block to press the pressure-sensitive switch. The power is turned on to change the magnetic field near the iron core, which attracts the armature to open the cover plate for heat dissipation. At the same time, it can prevent the heat dissipation holes from being exposed to the outside for a long time, causing water to flow into the inside of the box.

[0013] Furthermore, a slide groove is chiseled at one end of the box body near the biochar board, and a first spring groove is chiseled at one end of the box body near the slide groove, a first spring is fixedly connected to the inner wall of the first spring groove, a guide rod is provided inside the first spring, and a fixing rod is fixedly connected to one end of the guide rod near the slide groove, and the fixing rod is slidably connected to the inner wall of the first spring groove, a guide rod groove is chiseled at one end of the box body near the first spring groove, and a pull rod is fixedly connected to one end of the guide rod away from the fixing rod, the pull rod is located inside the guide rod groove, and the pull rod is pulled, and the pull rod drives the fixing rod to move to the inside of the first spring groove, and then the biochar board drives the slider to move in the slide groove, and when the fixing groove inside the slider is aligned with the fixing rod, the pull rod is released, and the fixing rod bounces into the inside of the fixing groove through the elastic structure formed with the first spring, which is convenient for the installation of the biochar board and can be disassembled for replacement.

[0014] Furthermore, a polishing layer is provided at the contact point between the slide groove and the slider, and the cross-sections of the slide groove and the slider are adapted T-shaped. By providing the polishing layer, the slider can move smoothly in the slide groove, and by setting the cross-sections of the slide groove and the slider to adapted T-shapes, the slide groove and the slider are not easily separated.

[0015] Furthermore, the free length of the second spring is smaller than the distance between the top wall of the box body and the pressure-sensitive switch. The material of the second spring is nickel-titanium memory alloy. By setting the free length of the second spring to be smaller than the distance between the top wall of the box body and the pressure-sensitive switch, the pressure-sensitive switch can be prevented from opening prematurely. By setting the material of the second spring to nickel-titanium memory alloy, the second spring can expand and contract with changes in temperature. When the heat is too high, the second spring drives the block to press against the pressure-sensitive switch, and the electromagnet is energized to start working.

[0016] Furthermore, a cover plate is provided on one side of the top of the box body near the heat dissipation hole, and a rotating plate is fixedly connected to the left side of the top of the cover plate, and the rotating plate is rotatably connected to the top wall of the box body, and an armature is fixedly connected to the left side of the bottom end of the rotating plate, and an iron core is fixedly connected to one end of the top wall of the box body corresponding to the armature, and a coil is wound around the outer end of the iron core, and a third spring is fixedly connected between the rotating plate and the top wall of the box body, and a connecting tube is provided on the outside of the third spring, and the connecting tube is fixedly connected to the rotating plate and the box body. When the electromagnet is energized, the armature is adsorbed on one side of the iron core due to the change in the magnetic field, and the cover plate can be driven to open by the rotation of the rotating plate, thereby improving the heat dissipation effect.

[0017] Furthermore, a sealing ring is glued to the contact point between the cover plate and the outer wall of the heat dissipation hole, and the material of the sealing ring is HNBR hydrogenated nitrile rubber. By setting the material of the sealing ring to HNBR hydrogenated nitrile rubber, the sealing ring can have excellent corrosion resistance, tear resistance and compression deformation resistance, which facilitates sealing between the cover plate and the heat dissipation hole and prevents water from entering the interior of the box when heat dissipation is not required.

[0018] Furthermore, the third spring is wound around the outside of the armature and the iron core, and the material of the third spring is piano wire. By winding the third spring around the outside of the armature and the iron core, in the event of a power outage, the third spring can drive the cover to press against the heat dissipation hole through the rotating plate to prevent the cover from opening at will. By setting the material of the third spring to piano wire, the third spring can have extremely high strength limits and elastic limits.

[0019] Furthermore, the connecting pipe is made of a corrugated hose, and a wear-resistant layer is provided at the outer end of the connecting pipe. By setting the material of the connecting pipe to a corrugated hose, obstruction to the rotation of the rotating plate can be avoided, and the connecting pipe cover is provided on the outside of the third spring, which can protect the third spring and prevent the third spring from being exposed to the outside and easily corroded by water impact.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] This solution can achieve the goal of pulling the pull rod to sleeve the biochar plate on the outside of the box when the river is being managed. When the fixing rod is aligned with the fixing groove, the pull rod is released to fix the biochar plate on the outside of the box, thereby achieving the purpose of adsorbing sewage in the river. The solar panel absorbs sunlight and converts solar energy into electricity to drive the motor to rotate. The motor can drive the turbine to rotate, thereby achieving the goal of the box driving the biochar plate to move in the river, thereby improving the efficiency of river management. When the temperature in the box changes, the second spring extends as the temperature rises and drives the resistance block to press the pressure-sensitive switch. The power is turned on, which changes the magnetic field near the iron core, attracts the armature and opens the cover to facilitate heat dissipation. At the same time, it can prevent the heat dissipation holes from being exposed to the outside for a long time, causing water to flow into the inside of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a left side structural schematic diagram of the present invention;

[0025] Figure 3 For the present invention Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 4 For the present invention Figure 1 A schematic diagram of the partially enlarged structure at B in the middle;

[0027] Figure 5 For the present invention Figure 2 A schematic diagram of the partially enlarged structure at C in the middle;

[0028] Figure 6 It is a bottom view structural schematic diagram of the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. Box body; 2. Solar panel; 3. Battery; 4. Motor; 5. Turbine; 6. Biochar plate; 7. Slide; 8. Slider; 9. First spring slot; 10. First spring; 11. Guide rod; 12. Fixed rod; 13. Guide rod slot; 14. Pull rod; 15. Fixed slot; 16. Water diversion hole; 17. Second spring; 18. Stop block; 19. Pressure sensitive switch; 20. Heat dissipation hole; 21. Filter; 22. Cover plate; 23. Turn plate; 24. Armature; 25. Iron core; 26. Third spring; 27. Connecting pipe. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example:

[0035] See also Figure 1-6 , a solar-powered modular river management method, comprising the following steps:

[0036] S1. The biochar plate is sleeved on the outside of the box module to provide a carbon source, which is helpful for denitrification and has biochemical and adsorption functions;

[0037] S2, planting aquatic plants in the cultivation holes in the biochar plate to treat the sewage through the aquatic plants;

[0038] S3. By converting solar energy into electrical energy, the movement of the box module is promoted, so that the box module drives the biochar plate to treat different positions of the river.

[0039] See also Figure 1-5 The box module in S1 includes a box body 1, a solar panel 2 is fixedly connected to the top of the box body 1, a battery 3 is installed at the inner bottom wall of the box body 1, a motor 4 is installed on the left side of the inner bottom wall of the box body 1 near the battery 3, a turbine 5 is fixedly connected to the output end of the motor 4, and the turbine 5 is located outside the box body 1, a biochar plate 6 is provided at the front and rear ends of the box body 1, and a limit installation mechanism is provided between the box body 1 and the biochar plate 6, a slider 8 is fixedly connected to one end of the biochar plate 6 close to the box body 1, a fixing groove 15 is drilled at the end of the slider 8 away from the biochar plate 6, and a plurality of water diversion holes 16 are drilled on the outer side of the biochar plate 6, a second spring 17 is fixedly connected to the inner top wall of the box body 1, a stop block 18 is fixedly connected to the bottom end of the second spring 17, a pressure-sensitive switch 19 is provided on the side of the inner wall of the box body 1 corresponding to the stop block 18, a heat dissipation hole 20 is drilled at the top of the box body 1, a filter screen 21 is fixedly connected to the inner wall of the heat dissipation hole 20, and a filter screen 21 is fixedly connected to the top of the box body 1. A magnetic adsorption mechanism is provided on one side near the filter screen 21, so that when the river channel is being managed, the pull rod 14 can be pulled to sleeve the biochar plate 6 on the outside of the box body 1. When the fixing rod 12 is aligned with the fixing groove 15, the pull rod 14 is released to fix the biochar plate 6 on the outside of the box body 1, so as to achieve the purpose of adsorbing the sewage in the river channel. The solar panel 2 absorbs sunlight and converts solar energy into electrical energy to drive the motor 4 to rotate. The motor 4 can drive the turbine 5 to rotate, so as to achieve the purpose of the box body 1 driving the biochar plate 6 to move in the river channel, thereby improving the management efficiency of the river channel. When the temperature in the box body 1 changes, the second spring 17 extends as the temperature rises and drives the stop block 18 to press the pressure-sensitive switch 19. The power is turned on to change the magnetic field near the iron core 25, and the armature 24 is attracted to open the cover plate 22 for heat dissipation. At the same time, it can prevent the heat dissipation hole 20 from being exposed to the outside for a long time, causing water to flow into the inside of the box body 1.

[0040] See also Figure 2 and Figure 6A slide groove 7 is bored at one end of the box body 1 close to the biochar plate 6, a first spring groove 9 is bored at one end of the box body 1 close to the slide groove 7, a first spring 10 is fixedly connected to the inner wall of the first spring groove 9, a guide rod 11 is arranged inside the first spring 10, a fixed rod 12 is fixedly connected to one end of the guide rod 11 close to the slide groove 7, the fixed rod 12 is slidably connected to the inner wall of the first spring groove 9, a guide rod groove 13 is bored at one end of the box body 1 close to the first spring groove 9, a pull rod 14 is fixedly connected to one end of the guide rod 11 away from the fixed rod 12, the pull rod 14 is located inside the guide rod groove 13, and the pull rod 14 is pulled, and the pull rod 14 drives the fixed rod 12 to move to the first spring groove 9, and then the biochar plate 6 drives the slider 8 to move in the slide groove 7. When the fixed groove 15 inside the slider 8 is aligned with the fixed rod 12, the pull rod 14 is released, and the fixed rod 12 is rebounded into the fixed groove 15 through the elastic structure formed with the first spring 10, which is convenient for the installation of the biochar plate 6 and can be disassembled for replacement. A polishing layer is provided at the contact point between the slide groove 7 and the slider 8, and the cross-sections of the slide groove 7 and the slider 8 are matched T-shaped. By setting the polishing layer, the slider 8 can move smoothly in the slide groove 7, and by setting the cross-sections of the slide groove 7 and the slider 8 to matched T-shapes, the slide groove 7 and the slider 8 can be made difficult to separate.

[0041] See also Figure 1 and Figure 4 The free length of the second spring 17 is smaller than the distance between the top wall of the box body 1 and the pressure-sensitive switch 19. The material of the second spring 17 is nickel-titanium memory alloy. By setting the free length of the second spring 17 to be smaller than the distance between the top wall of the box body 1 and the pressure-sensitive switch 19, the pressure-sensitive switch 19 can be prevented from opening prematurely. By setting the material of the second spring 17 to nickel-titanium memory alloy, the second spring 17 can be expanded and contracted with the change of temperature. When the heat is too high, the second spring 17 drives the block 18 to press against the pressure-sensitive switch 19, and the electromagnet is energized to start working. A cover plate 22 is provided on one side of the top of the box body 1 near the heat dissipation hole 20. A rotating plate 23 is fixedly connected to the left side of the top end of the plate 22, and the rotating plate 23 is rotatably connected to the top wall of the box body 1. An armature 24 is fixedly connected to the left side of the bottom end of the rotating plate 23. An iron core 25 is fixedly connected to one end of the top wall of the box body 1 corresponding to the armature 24, and a coil is wound around the outer end of the iron core 25. A third spring 26 is fixedly connected between the rotating plate 23 and the top wall of the box body 1. A connecting tube 27 is provided on the outside of the third spring 26. The connecting tube 27 is fixedly connected to the rotating plate 23 and the box body 1. When the electromagnet is energized, the armature 24 is adsorbed on one side of the iron core 25 due to the change in the magnetic field, and the cover plate 22 can be driven to open by the rotation of the rotating plate 23 to improve the heat dissipation effect.

[0042] See also Figure 1 and Figure 3The contact between the cover plate 22 and the outer wall of the heat dissipation hole 20 is glued and connected with a sealing ring, and the material of the sealing ring is HNBR hydrogenated nitrile rubber. By setting the material of the sealing ring to HNBR hydrogenated nitrile rubber, the sealing ring can have excellent corrosion resistance, tear resistance and compression deformation resistance, which is convenient for sealing between the cover plate 22 and the heat dissipation hole 20 to prevent water from entering the box body 1 when heat dissipation is not required. The third spring 26 is wound around the outside of the armature 24 and the iron core 25. The material of the third spring 26 is piano wire. By winding the third spring 26 around the outside of the armature 24 and the iron core 25, When the power is off, the third spring 26 drives the cover plate 22 to press against the heat dissipation hole 20 through the rotating plate 23 to prevent the cover plate 22 from opening at will. By setting the material of the third spring 26 to piano wire, the third spring 26 can have extremely high strength limit and elastic limit. The material of the connecting pipe 27 is a corrugated hose, and the outer end of the connecting pipe 27 is provided with a wear-resistant layer. By setting the material of the connecting pipe 27 to a corrugated hose, the rotation of the rotating plate 23 is avoided from being hindered, and the connecting pipe 27 cover is arranged on the outside of the third spring 26, which can protect the third spring 26 and prevent the third spring 26 from being exposed to the outside and being easily corroded by water impact.

[0043] In the present invention, when the relevant technical personnel use the device, first, pull the pull rod 14, the pull rod 14 drives the fixed rod 12 to move to the inside of the first spring groove 9, then move the biochar board 6 to the outside of the box body 1, the biochar board 6 drives the slider 8 to move in the slide groove 7, when the fixed groove 15 inside the slider 8 is aligned with the fixed rod 12, release the pull rod 14, the fixed rod 12 is elastically inserted into the inside of the fixed groove 15 through the elastic structure formed with the first spring 10, so as to facilitate the installation of the biochar board 6, and then, cultivate aquatic plants in the cultivation hole of the biochar board 6, and then, The box 1 is placed in the river channel, and the solar panel 2 absorbs sunlight and converts solar energy into electrical energy to drive the motor 4 to rotate. The motor 4 can drive the turbine 5 to rotate, so that the box 1 drives the biochar plate 6 to move in the river channel, thereby improving the efficiency of river management. When the temperature in the box 1 is too high, the second spring 17 extends as the temperature rises and drives the stop block 18 to press the pressure-sensitive switch 19. The power is turned on to change the magnetic field near the iron core 25, which attracts the armature 24 and opens the cover 22 for heat dissipation. At the same time, it can prevent the heat dissipation holes 20 from being exposed to the outside for a long time, causing water to flow into the interior of the box 1.

[0044] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A solar-driven modular river management method, characterized in that: The following steps are involved: S1. The biochar plate is sleeved on the outside of the box module to provide a carbon source, which is helpful for denitrification and has biochemical and adsorption functions; S2, planting aquatic plants in the cultivation holes in the biochar plate to treat the sewage through the aquatic plants; S3, by converting solar energy into electrical energy, the movement of the box module is promoted, so that the box module drives the biochar plate to treat different positions of the river; The box module in S1 comprises a box body (1), the top of the box body (1) is fixedly connected to a solar panel (2), a storage battery (3) is installed at the inner bottom wall of the box body (1), a motor (4) is installed on the left side of the inner bottom wall of the box body (1) close to the storage battery (3), the output end of the motor (4) is fixedly connected to a turbine (5), and the turbine (5) is located outside the box body (1), and biochar plates (6) are provided at the front and rear ends of the box body (1), and the box body (1) and the biochar plates are connected to each other. (6), the end of the biochar plate (6) close to the box body (1) is fixedly connected to a slider (8), the end of the slider (8) away from the biochar plate (6) is chiseled with a fixing groove (15), the outer side of the biochar plate (6) is chiseled with a plurality of water diversion holes (16), the inner top wall of the box body (1) is fixedly connected to a second spring (17), the bottom end of the second spring (17) is fixedly connected to a stop block (18), and the inner wall of the box body (1) corresponds to the stop block (18). A pressure-sensitive switch (19) is provided on one side, a heat dissipation hole (20) is drilled at the top of the box (1), a filter screen (21) is fixedly connected to the inner wall of the heat dissipation hole (20), and a magnetic adsorption mechanism is provided on one side of the top of the box (1) near the filter screen (21); when the river is being treated, the pull rod is pulled to sleeve the biochar plate on the outside of the box; when the fixing rod is aligned with the fixing groove, the pull rod is released so that the biochar plate is fixedly installed on the outside of the box, thereby achieving the purpose of adsorbing sewage from the river; the solar panel absorbs sunlight and converts the solar energy into electrical energy to drive the motor to rotate; the motor can drive the turbine to rotate, thereby achieving the purpose of the box driving the biochar plate to move in the river, thereby improving the treatment efficiency of the river; when the temperature in the box changes, the second spring stretches as the temperature rises and drives the block to press the pressure-sensitive switch, and the power is turned on so that the magnetic field near the iron core changes, the armature is attracted to open the cover plate for convenient heat dissipation, and at the same time, it can prevent the heat dissipation hole from being exposed to the outside for a long time, causing water to flow into the inside of the box; The position limiting installation mechanism comprises a slide groove (7), a first spring groove (9), a first spring (10), a guide rod (11), a fixed rod (12), a guide rod groove (13) and a pull rod (14); the slide groove (7) is bored at one end of the box body (1) close to the biochar plate (6); the first spring groove (9) is bored at one end of the box body (1) close to the slide groove (7); the first spring (10) is fixedly connected to the inner wall of the first spring groove (9); a guide rod (11) is provided inside the first spring (10); the fixed rod (12) is fixedly connected to one end of the guide rod (11) close to the slide groove (7); the fixed rod (12) slides The box body (1) is movably connected to the inner wall of the first spring groove (9), a guide rod groove (13) is cut at one end of the box body (1) close to the first spring groove (9), and a pull rod (14) is fixedly connected to one end of the guide rod (11) away from the fixing rod (12), and the pull rod (14) is located inside the guide rod groove (13); when the pull rod is pulled, the pull rod drives the fixing rod to move to the inside of the first spring groove, and then the biochar board drives the slider to move in the slide groove; when the fixing groove inside the slider is aligned with the fixing rod, the pull rod is released, and the fixing rod is ejected into the inside of the fixing groove through the elastic structure formed with the first spring, so that the biochar board can be easily installed and can be disassembled for replacement; A polishing layer is provided at the contact point between the slide groove (7) and the slider (8), and the cross-sections of the slide groove (7) and the slider (8) are in a matching T-shape; by providing the polishing layer, the slider can move smoothly in the slide groove, and by providing the cross-sections of the slide groove and the slider in a matching T-shape, the slide groove and the slider are not easily separated; The free length of the second spring (17) is smaller than the distance between the top wall of the box body (1) and the pressure-sensitive switch (19), and the material of the second spring (17) is a nickel-titanium memory alloy. By setting the free length of the second spring to be smaller than the distance between the top wall of the box body and the pressure-sensitive switch, the pressure-sensitive switch can be prevented from opening prematurely. By setting the material of the second spring to be a nickel-titanium memory alloy, the second spring can be expanded and contracted with changes in temperature. When the heat is too high, the second spring drives the block to press against the pressure-sensitive switch, and the electromagnet is energized to start working. The magnetic adsorption mechanism comprises a cover plate (22), a rotating plate (23), an armature (24), an iron core (25), a third spring (26) and a connecting pipe (27); a cover plate (22) is provided on a side of the top end of the box body (1) close to the heat dissipation hole (20); a rotating plate (23) is fixedly connected to the left side of the top end of the cover plate (22); the rotating plate (23) is rotatably connected to the top wall of the box body (1); the armature (24) is fixedly connected to the left side of the bottom end of the rotating plate (23); the top of the box body (1) is An iron core (25) is fixedly connected to one end of the wall corresponding to the armature (24), a coil is wound around the outer end of the iron core (25), a third spring (26) is fixedly connected between the rotating plate (23) and the top wall of the box body (1), a connecting pipe (27) is provided outside the third spring (26), and the connecting pipe (27) is fixedly connected to the rotating plate (23) and the box body (1); when the electromagnet is energized, the armature is adsorbed on one side of the iron core by the change of the magnetic field, and the cover plate can be driven to open by the rotation of the rotating plate, thereby improving the heat dissipation effect; The contact point between the cover plate (22) and the outer wall of the heat dissipation hole (20) is glued to a sealing ring, and the material of the sealing ring is HNBR hydrogenated nitrile rubber; by setting the material of the sealing ring to HNBR hydrogenated nitrile rubber, the sealing ring can have excellent corrosion resistance, tear resistance and compression deformation resistance, which facilitates sealing between the cover plate and the heat dissipation hole, and prevents water from entering the box body when heat dissipation is not required; The third spring (26) is wound around the outside of the armature (24) and the iron core (25), and the material of the third spring (26) is piano wire. By winding the third spring around the outside of the armature and the iron core, the third spring can drive the cover plate to press against the heat dissipation hole through the rotating plate when the power is off, so as to prevent the cover plate from opening at will. By setting the material of the third spring to piano wire, the third spring can have extremely high strength limit and elastic limit. The material of the connecting pipe (27) is a corrugated hose, and the outer end of the connecting pipe (27) is provided with a wear-resistant layer; by setting the material of the connecting pipe to be a corrugated hose, the rotation of the rotating plate is prevented from being hindered, and the connecting pipe cover is arranged outside the third spring, so as to protect the third spring and prevent the third spring from being exposed to the outside and being easily impacted by water flow and corroded.

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