Energy-saving and environment-friendly gas stove

Abstract

The invention relates to the technical field of gas stove devices, in particular to an energy-saving and environment-friendly gas stove which comprises a water tank, a ventilation cylinder and the like. A ventilation cylinder is fixedly connected to the water tank, a battery is arranged on the water tank, a faucet is arranged on the water tank, and a plurality of ventilation openings are formed in the ventilation cylinder. During outdoor use, a second supporting rod is twisted downwards, a supporting ring is driven to move downwards to be attached to the ground, then a locking bolt is tightened, the second supporting rod and the supporting ring are both stably attached to the ground, the overall gravity center of the gas tank is remarkably reduced, and the risk that the gas tank topples over is reduced; the anti-toppling capacity and the overall stability of the pot when the pot is used outdoors are greatly improved, during cooking, the height of the supporting cover and the height of connecting parts of the supporting cover are allowed to be manually adjusted up and down by unscrewing a fastening screw of the telescopic rod, the height of the pot is made to be matched with the height of an operator, and manual operation comfort and safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas stove devices, and in particular to an energy-saving and environment-friendly gas stove. Background Art

[0002] When using gas stoves for cooking in outdoor environments, the outdoor ground is often not very flat, which makes traditional gas stoves have poor stability and high risk of tipping over. They also have weak wind resistance, so when stewing for a long time, if not properly supervised, the flame can be easily blown out, seriously affecting the cooking effect. In addition, traditional gas stoves have poor adaptability and cannot easily match the height requirements of different users. Long-term operation can easily cause fatigue and discomfort to the operator, affecting the experience and safety. Summary of the Invention

[0003] In order to overcome the problems of poor stability and high risk of tipping over of traditional gas stoves, weak wind resistance, and inability to easily match the height requirements of different users, the present invention provides an energy-saving and environmentally friendly gas stove.

[0004] The technical solution is: an energy-saving and environmentally friendly gas stove, including a water tank and a vent cylinder; the vent cylinder is fixedly connected to the water tank, a battery is provided on the water tank, a faucet is provided on the water tank, and a plurality of vents are provided on the vent cylinder; the vent cylinder also includes a connecting cylinder, a support cover, a vent plate, a burner, a telescopic rod and a support assembly; the vent cylinder is slidably connected to the connecting cylinder; a support cover for supporting the pot is fixedly connected to the connecting cylinder; a vent plate for ventilation is fixedly connected to the support cover, and a plurality of vents are provided on the vent plate Hole; a burner is fixedly connected to the ventilation plate, a connecting pipe is provided on the burner, a switch for controlling the ignition and gas supply of the burner is provided on the water tank, the switch is electrically connected to the battery on the water tank, and the connecting pipe is connected to the gas tank through the switch and the gas pipe; the water tank and the support cover are jointly fixed with a telescopic rod for supporting the support cover, the telescopic rod consists of an inner rod, an outer tube and a fastening screw, and when the fastening screw on the outer tube is tightened, the inner rod and the outer tube are fixed; a support assembly for increasing the contact area is connected to the water tank.

[0005] Furthermore, the support assembly includes a first support rod, a second support rod, a support ring and a locking bolt; several first support rods are movably connected to the lower side of the water tank; the other end of each first support rod is movably connected to a second support rod; all second support rods are movably connected to the support ring; the movable connection between the water tank and the first support rod and the movable connection between the first support rod and the second support rod are both provided with locking bolts.

[0006] Furthermore, it also includes a clamping block, a connecting block, a cover plate and a shield; two clamping blocks are provided on the support shield; the two clamping blocks are connected to the connecting block for rotation; the connecting block is fixed with a cover plate for protecting the burner head; the cover plate is fixed with a shield.

[0007] Furthermore, two hoses are connected to the water tank, and a water pump is connected to the upper side of the water tank through a water pipe. The water pump is electrically connected to the battery on the water tank, and the output end of the water pump is connected to one of the hoses; two water ports are provided on the support cover, and each hose is plugged into a water port; a heat conduction pipe is provided inside the support cover, and the heat conduction pipe is connected to the two water ports.

[0008] Furthermore, the connecting block and the cover plate are both arranged to be hollow inside, the connecting block is communicated with the cover plate, two sockets are arranged on the card block, and the connecting block and the card block are detachably connected.

[0009] Furthermore, a groove is provided on the lower side of the cover plate, a plurality of water outlets are provided in the groove, and the water outlets are communicated with the hollow area inside the cover plate; the baffle is screwed to the groove.

[0010] Furthermore, a downwardly inclined guide edge is provided on the upper side of the support cover.

[0011] Furthermore, the cover plate is concave in shape.

[0012] Furthermore, heat dissipation fins are provided on the outside of the connecting pipe.

[0013] Furthermore, it also includes a support block; a plurality of support blocks are connected to the support cover in a damping rotation manner.

[0014] The beneficial effects of the present invention are as follows: when used outdoors, the second support rod is twisted downward to drive the support ring to move downward and fit into the ground, and then the locking bolt is tightened. The second support rod and the support ring are firmly fitted into the ground, which significantly lowers the overall center of gravity of the present invention and reduces the risk of the gas cylinder tipping over. The anti-tipover ability and overall stability of the present invention when used outdoors are greatly improved. When cooking, the height of the support cover and its connecting parts can be manually adjusted up and down by loosening the fastening screws of the telescopic rod, so that the height of the pot matches the height of the operator, thereby improving the comfort and safety of manual operation. When stewing for a long time, the support cover can be moved down to the inside of the ventilator. At this time, the ventilator effectively blocks the interference of external wind on the burner flame, ensuring stable combustion. At the same time, the air required for combustion can smoothly enter the support cover through the vent of the ventilator, the connecting tube and the air holes of the vent plate, replenishing oxygen and ensuring sufficient combustion. During the cooking process, the flame of the burner heats the pot and the support cover at the same time. The cold water in the water tank is pumped into the water inlet through the hose by a water pump, flows through the heat-conducting pipe in the support cover for heat exchange, and the heated water flows back to the water tank through another water inlet and the hose. This cycle effectively recycles the residual energy of the burner heating the support cover, continuously preheating the water in the water tank, improving the overall energy utilization efficiency and achieving energy saving effects. After cooking, the cover plate is covered on the support cover, which can effectively block dust and fallen leaves and other sundries, so as to avoid sundries falling on the stove head. The cover plate can be used to place the container which needs to be kept warm. By pulling the hose out of the water inlet and inserting it into the socket of the connecting block, the preheated hot water in the water tank can be passed into the cover plate, so that the hot water circulates in the cover plate. The hot water is used to heat the upper soup pot, or the cold water is used to cool the soup pot. At the same time, the connecting block, the cover plate and the blocking cover can be removed and placed on the dining table for keeping food warm. Further, by manually twisting the blocking cover to separate it from the groove, water is supplied to the cover plate, so that the water flow is sprayed downward from the groove outlet, and the support cover and the ventilation plate are washed and cooled. The blocking cover covers the stove head to reduce heat conduction and cooling, and blocks the water flow into the stove head. The sewage is finally discharged through the air holes of the ventilation plate, which simplifies the cleaning process and accelerates the cooling of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the three-dimensional structure of the energy-saving and environment-friendly gas stove of the present application; Figure 2 is a state diagram of the operation of the support assembly of the present application; Figure 3 is a schematic diagram of the three-dimensional structure of the combination of the ventilation cylinder, the connecting cylinder and the support cover of the present application; Figure 4 is a sectional view of the combination of the ventilation cylinder and the connecting cylinder of the present application; Figure 5 is a schematic diagram of the three-dimensional structure of the combination of the connecting block, the cover plate and the blocking cover of the present application; Figure 6 is a state diagram of the operation of the blocking cover of the present application; Figure 7 is a sectional view of the support cover of the present application.

[0016] Brief description of drawings: 111-gas tank, 1-water tank, 1001-hose, 1002-water pump, 2-ventilation cylinder, 3-connecting cylinder, 4-support cover, 4001-guide edge, 4002-water inlet, 4003-heat conduction pipeline, 5-ventilation plate, 6-stove head, 6001-connection pipe, 7-extension rod, 101-first support rod, 102-second support rod, 103-support ring, 104-locking bolt, 201-clamp block, 202-connecting block, 203-cover plate, 20301-groove, 204-blocking cover, 301-support block. DETAILED DESCRIPTION

[0017] The present application will be further described below in conjunction with the drawings and examples.

[0018] Example 1: An energy-saving and environment-friendly gas stove, such as Figure 1-Figure 7As shown, it includes a water tank 1 and a vent cylinder 2; the vent cylinder 2 is fixedly connected to the upper side of the water tank 1, a battery is provided on the lower side of the water tank 1, a faucet is provided on the water tank 1, and a plurality of vents are opened on the vent cylinder 2; It also includes a connecting tube 3, a support cover 4, a ventilation plate 5, a burner 6, a telescopic rod 7 and a support assembly; the connecting tube 3 is slidably connected to the ventilation tube 2; the support cover 4 is fixed to the connecting tube 3; the ventilation plate 5 is fixed to the inner side of the support cover 4, and a number of ventilation holes are opened on the ventilation plate 5; the burner 6 is fixed to the inner side of the ventilation plate 5, and a connecting pipe 6001 is provided on the burner 6, and a switch is provided on the water tank 1, and the switch is electrically connected to the battery on the water tank 1, and the connecting pipe 6001 is connected to the gas tank 111 through the switch and the gas pipe; the water tank 1 and the support cover 4 are jointly fixed with the telescopic rod 7, and the telescopic rod 7 consists of an inner rod, an outer tube and a fastening screw. When the fastening screw on the outer tube is tightened, the inner rod and the outer tube are fixed; the water tank 1 is connected to a support assembly.

[0019] The support assembly includes a first support rod 101, a second support rod 102, a support ring 103 and a locking bolt 104; three first support rods 101 are hinged on the lower side of the water tank 1; each first support rod 101 is hinged to a second support rod 102 at the other end; all second support rods 102 are hinged to the support ring 103; locking bolts 104 are provided at the hinges between the water tank 1 and the first support rod 101 and the hinges between the first support rod 101 and the second support rod 102.

[0020] It also includes a clamping block 201, a connecting block 202, a cover plate 203 and a shield 204; two clamping blocks 201 are provided on the support cover 4; the two clamping blocks 201 are connected to the connecting block 202 by rotation together; the cover plate 203 is fixed to the connecting block 202; and the shield 204 is fixed to the cover plate 203.

[0021] There are two hoses 1001 connected to the water tank 1, and a water pump 1002 is connected to the upper side of the water tank 1 through a water pipe. The water pump 1002 is electrically connected to the battery on the water tank 1, and the output end of the water pump 1002 is connected to one of the hoses 1001; two water ports 4002 are provided on the support cover 4, and each hose 1001 is plugged into a water port 4002; a heat conduction pipe 4003 is provided in the support cover 4, and the heat conduction pipe 4003 is connected to the two water ports 4002.

[0022] The connecting block 202 and the cover plate 203 are both hollow inside, the connecting block 202 is connected to the cover plate 203, the clamping block 201 is provided with two sockets whose inner diameters match the outer diameter of the hose 1001, and the connecting block 202 and the clamping block 201 are detachably connected.

[0023] A groove 20301 is provided on the lower side of the cover 203, and a plurality of water outlets are provided in the groove 20301, and the water outlets are connected to the hollow area inside the cover 203; the baffle 204 is screwed to the groove 20301. When the baffle 204 is initially installed on the cover 203, the water outlets in the groove 20301 are blocked by the baffle 204, and a knob is provided on the baffle 204.

[0024] A downwardly inclined guide edge 4001 is provided on the upper side of the support cover 4, and the soup flowing downward along the outer edge of the pot is guided outward by the guide edge 4001 to reduce the soup dripping onto the burner 6.

[0025] The cover plate 203 is concave in shape to enhance the stability of the cookware placed on it.

[0026] The outside of the connecting pipe 6001 is provided with heat dissipation fins to dissipate the heat conducted from the burner 6 to the connecting pipe 6001 in time, so as to prevent the connecting pipe 6001 from overheating and affecting the gas pipe.

[0027] The working process of the energy-saving and environment-friendly gas stove of the present invention is as follows: When used outdoors, the present invention needs to be adjusted from the storage state to the working state. The present invention is placed on the ground manually, and the locking bolts 104 at the hinges between the water tank 1 and the first support rod 101 and the hinges between the first support rod 101 and the second support rod 102 are loosened. Figure 1 and Figure 2 As shown, by manually twisting the second support rod 102 downward, the support ring 103 is driven downward by the second support rod 102, and the first support rod 101 is driven to rotate adaptively until the support ring 103 is in contact with the ground, and then the locking bolts 104 on the first support rod 101 and the second support rod 102 are tightened. At this time, the second support rod 102 and the support ring 103 are both in contact with the ground, and the gas tank 111 is pressed on the support ring 103, so that the center of gravity of the present invention is lowered.

[0028] When cooking is required, the pot is placed on the support cover 4 manually, the valve of the gas tank 111 is opened, and then the gas ejected from the burner 6 is ignited through the switch on the water tank 1, so that the pot is heated for cooking. Before cooking, the fastening screws on the telescopic rod 7 are loosened manually to allow the inner rod to slide freely in the outer tube. At this time, the support cover 4 and the parts connected thereto are manually driven to move up or down, so that the connecting tube 3 slides on the vent tube 2, and the telescopic rod 7 is adaptively extended and retracted until the height of the support cover 4 matches the height of the operator to adapt to the height of different operators. Further, when stewing for a long time is required, the support cover 4 is moved down to enter the vent tube 2, so that the flame generated by the burner 6 is shielded from wind by the vent tube 2, and during the combustion process, air passes through the vent port of the vent tube 2, the connecting tube 3 and the air holes of the vent plate 5 in sequence and enters the support cover 4, thereby replenishing the oxygen required for combustion.

[0029] It should be noted that water is pre-stored in the water tank 1. During the cooking process, the flame generated by the burner 6 also heats the support cover 4. By controlling the water pump 1002 on the water tank 1, the water in the water tank 1 is pumped into the corresponding water port 4002 through one of the hoses 1001. Then the water flows through the heat conduction pipe 4003 and enters another hose 1001 from another water port 4002, and then re-enters the water tank 1, thereby heating the water in the water tank 1 through the heated support cover 4. It should be noted that the switch and water pump 1002 on the water tank 1 are both powered by the battery on the lower side of the water tank 1.

[0030] After cooking is completed, the cover plate 203 is manually turned over, thereby driving the connecting block 202 to rotate on the clamping block 201 until the cover plate 203 is fitted with the support cover 4, thereby sealing the upper side of the support cover 4 through the cover plate 203 to block dust, fallen leaves and other debris from falling on the burner head 6. Furthermore, at this time, the container to be kept warm (such as a soup pot with soup) is manually placed on the cover plate 203, and the hose 1001 is pulled out from the water outlet 4002, and then the hose 1001 is inserted into the socket of the connecting block 202, so that the water pump 1002 can be used to heat the water. The hot water in the water tank 1 is pumped into the connecting block 202 through one of the hoses 1001, and then the water flows into the cover 203, and then the water flows back into the water tank 1 through the other hose 1001, so that the hot water in the water tank 1 circulates in the cover 203, and the cover 203 is heated by the hot water to increase its temperature, thereby keeping the container warm through the heated cover 203, or directly remove the connecting block 202 from the clamping block 201, and place the connecting block 202, the cover 203 and the baffle 204 on the dining table, and keep the soup pot placed above it warm through the cover 203.

[0031] Further, after cooking is completed, Figure 7As shown, by manually twisting the baffle 204, the baffle 204 is disengaged from the groove 20301, so that the baffle 204 releases the blockage of the water outlet in the groove 20301. At this time, the water pump 1002 is controlled to pass water to the connecting block 202 through the hose 1001, so that the water flows into the cover plate 203, and then the water is sprayed downward from the water outlet in the groove 20301, and the support cover 4 and the ventilation plate 5 are flushed and cooled by the water flow. Before flushing, the baffle 204 is covered on the burner 6 to block the water flow by the baffle 204, and the heat on the burner 6 is conducted away through the baffle 204, and then the water flows downward through the air holes of the ventilation plate 5.

[0032] According to the above workflow, we can know that the present invention has the following effects: When used outdoors, by twisting the second support rod 102 downward, the support ring 103 is driven to move down and fit into the ground, and then the locking bolt 104 is tightened. The second support rod 102 and the support ring 103 are firmly fitted into the ground, and the support ring 103 is pressed by the gas tank 111, which significantly lowers the overall center of gravity of the present invention while enhancing the stability of the present invention and reducing the risk of tipping over. The anti-tipover ability and overall stability of the present invention when used outdoors are greatly improved. When cooking, by loosening the fastening screws of the telescopic rod 7, the height of the support cover 4 and its connecting parts can be manually adjusted up and down, so that the height of the pot matches the height of the operator, improving the comfort and safety of manual operation.

[0033] When stewing for a long time, the support cover 4 can be moved down to the inside of the vent cylinder 2. At this time, the vent cylinder 2 effectively blocks the interference of external wind on the flame of the burner 6, ensuring stable combustion. At the same time, the air required for combustion can smoothly pass through the vent of the vent cylinder 2, the air holes of the connecting tube 3 and the vent plate 5 in turn into the support cover 4 to replenish oxygen and ensure sufficient combustion.

[0034] During the cooking process, the flame of the burner 6 heats the pot while also heating the support cover 4. The cold water in the water tank 1 is pumped into the water port 4002 through the hose 1001 by the water pump 1002, and flows through the heat-conducting pipe 4003 in the support cover 4 for heat exchange. The heated water then flows back to the water tank 1 from another water port 4002 and the hose 1001. This cycle effectively recycles and utilizes the residual energy of the burner 6 heating the support cover 4, continuously preheats the water in the water tank 1, improves the overall energy utilization efficiency, and achieves energy-saving effects.

[0035] After cooking is completed, the cover 203 is placed on the support cover 4 to effectively block dust, fallen leaves and other debris, preventing them from falling on the burner 6. The cover 203 can be used to place containers that need to be kept warm. By pulling out the hose 1001 from the water inlet 4002 and inserting it into the socket of the connecting block 202, the preheated hot water in the water tank 1 can be passed into the cover 203, so that the hot water circulates in the cover 203, and its temperature is increased to keep the soup pot above warm. At the same time, the connecting block 202 and the cover 203 can be opened. 03 and the shield 204 are removed and placed on the dining table to keep the soup pot warm; further, the shield 204 is manually twisted to separate it from the groove 20301, and water is passed to the cover 203, so that the water flows downward from the water outlet of the groove 20301 to rinse and cool the support cover 4 and the ventilation plate 5, so that the shield 204 covers the burner 6 to conduct heat and cool it, and blocks the water flow from entering the burner 6. The sewage is finally discharged through the air holes of the ventilation plate 5, which simplifies the cleaning process and accelerates the cooling of the equipment.

[0036] The additional technical effects of the present invention are as follows: Among them, such as Figure 3 As shown, a downwardly inclined guide edge 4001 is provided on the upper side of the support cover 4. When overflow occurs, the soup in the pot overflows and flows downward along the outer edge of the pot. At this time, the guide edge 4001 guides the overflowing soup outward, thereby minimizing the soup dripping onto the burner 6 and preventing the flame from being extinguished.

[0037] Among them, such as Figure 5 As shown, the cover plate 203 is configured to be concave in shape to enhance the stability of the pot placed thereon.

[0038] Among them, such as Figure 3 As shown, a faucet is provided on the water tank 1, through which the heated water in the water tank 1 is taken.

[0039] Among them, such as Figure 4 As shown, heat dissipation fins are provided on the outside of the connecting pipe 6001 to dissipate the heat conducted from the burner 6 to the connecting pipe 6001 in time through the heat dissipation fins, so as to prevent the connecting pipe 6001 from overheating and affecting the gas pipe.

[0040] Example 2: Based on Example 1, Figure 3 and Figure 4 As shown, it also includes a support block 301; four support blocks 301 are connected to the support cover 4 in a damping rotation manner.

[0041] The workflow of the above embodiment is as follows: When cooking, after the pot is placed on the support cover 4, the support block 301 is squeezed by the pot and turned over, so that the support block 301 automatically rotates to adapt to the shape and contour of the bottom of the pot. The support block 301 increases the support area of ​​the pot, and effectively improves the stability of the pot placed on the support cover 4. It should be noted that since the support block 301 is connected to the support cover 4 in a damped rotation manner, when the pot leaves the support block 301 and the support cover 4, the support block 301 will not rotate under the action of its own gravity.

[0042] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. An energy-saving and environmentally friendly gas stove, comprising a water tank (1) and a vent cylinder (2); the vent cylinder (2) is fixedly connected to the water tank (1), a battery is provided on the water tank (1), a faucet is provided on the water tank (1), and a plurality of vents are provided on the vent cylinder (2); the characteristics are: The invention also comprises a connecting tube (3), a support cover (4), a ventilation plate (5), a burner (6), a telescopic rod (7) and a support assembly; the connecting tube (3) is slidably connected to the ventilation tube (2); the supporting cover (4) for supporting the pot is fixedly connected to the connecting tube (3); the ventilation plate (5) for ventilation is fixedly connected to the support cover (4), and a plurality of ventilation holes are provided on the ventilation plate (5); the burner (6) is fixedly connected to the ventilation plate (5), and the burner (6) is provided with a connecting pipe (6001); the water tank (1) is provided with a A switch for controlling the ignition and gas supply of the burner (6) is provided, the switch being electrically connected to the battery on the water tank (1), and the connecting pipe (6001) being connected to the gas tank (111) through the switch and the gas pipe; the water tank (1) and the support cover (4) are fixedly connected together with a telescopic rod (7) for supporting the support cover (4), the telescopic rod (7) comprising an inner rod, an outer tube and a fastening screw, and when the fastening screw on the outer tube is tightened, the inner rod and the outer tube are fixed; a supporting assembly for increasing the contact area is connected to the water tank (1).

2. The energy-saving and environmentally friendly gas stove according to claim 1, characterized in that: The support assembly comprises a first support rod (101), a second support rod (102), a support ring (103) and a locking bolt (104); a plurality of first support rods (101) are movably connected to the lower side of the water tank (1); the other end of each first support rod (101) is movably connected to a second support rod (102); all the second support rods (102) are movably connected to the support ring (103); and the locking bolt (104) is provided at the movable connection between the water tank (1) and the first support rod (101) and the movable connection between the first support rod (101) and the second support rod (102).

3. The energy-saving and environmentally friendly gas stove according to claim 1, characterized in that: The support cover (4) further comprises a clamping block (201), a connecting block (202), a cover plate (203) and a shield (204); two clamping blocks (201) are provided on the support cover (4); the two clamping blocks (201) are rotatably connected to the connecting block (202); a cover plate (203) for protecting the burner head (6) is fixed to the connecting block (202); and a shield (204) is fixed to the cover plate (203).

4. The energy-saving and environmentally friendly gas stove according to claim 1, characterized in that: The water tank (1) is connected to two hoses (1001), and the upper side of the water tank (1) is connected to a water pump (1002) through a water pipe. The water pump (1002) is electrically connected to the battery on the water tank (1), and the output end of the water pump (1002) is connected to one of the hoses (1001); two water openings (4002) are provided on the support cover (4), and each hose (1001) is plugged into one of the water openings (4002); a heat conduction pipe (4003) is provided in the support cover (4), and the heat conduction pipe (4003) is connected to the two water openings (4002).

5. The energy-saving and environment-friendly gas stove according to claim 3, characterized in that: The connecting block (202) and the cover plate (203) are both configured to be hollow inside, the connecting block (202) and the cover plate (203) are in communication, two sockets are provided on the card block (201), and the connecting block (202) and the card block (201) are detachably connected.

6. The energy-saving and environment-friendly gas stove according to claim 5, characterized in that: A groove (20301) is provided on the lower side of the cover plate (203), and a plurality of water outlets are provided in the groove (20301), and the water outlets are communicated with the hollow area inside the cover plate (203); the shield (204) is screwed to the groove (20301).

7. The energy-saving and environment-friendly gas stove according to claim 1, characterized in that: A downwardly inclined guide edge (4001) is provided on the upper side of the support cover (4).

8. The energy-saving and environment-friendly gas stove according to claim 3, characterized in that: The cover plate (203) is concave in shape.

9. The energy-saving and environment-friendly gas stove according to claim 1, characterized in that: The outside of the connecting pipe (6001) is provided with heat dissipation fins.

10. The energy-saving and environment-friendly gas stove according to claim 1, characterized in that: It also includes a support block (301); a plurality of support blocks (301) are connected to the support cover (4) in a damping rotation manner.

Images