MABR (Membrane Aerated Baffled Reactor) sewage treatment device

Abstract

The invention relates to the technical field of sewage treatment, and discloses an MABR (Membrane Aerated Baffled Reactor) sewage treatment device which comprises an upper bracket and a lower bracket, the upper bracket and the lower bracket are fixedly connected through a connecting frame, a membrane wire group is mounted between the upper bracket and the lower bracket, the interior of the lower bracket is hollow, and the interior of the lower bracket is communicated with the membrane wire group; the top of the lower support fixedly communicates with a Y-shaped air inlet pipe, and a stirring assembly is arranged on the back face of the lower support. The stirring assembly comprises a gas collecting frame fixed to the back face of the lower support through a support. According to the sewage treatment device for the MABR membrane bioreactor, the driving assembly mounted on the drainage pipe can be used for rotating and driving the plurality of aeration pipes, so that sewage can be stirred in a large range, the contact area of water and a biological membrane on the outer side of the membrane wire group is increased, and meanwhile, an auxiliary oxygen supply effect is also achieved, so that the reaction efficiency is enhanced; and the washing assembly can be matched to wash and clean the membrane filament group, so that the practicability of the equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a MABR membrane bioreactor sewage treatment device. Background Art

[0002] The membrane aeration biofilm reactor is a new type of sewage treatment technology that combines gas separation membrane technology with biofilm water treatment technology. Air supplies oxygen to the biofilm through the heavy ion microporous membrane, and the organic matter and nitrogen and phosphorus contained in the sewage are absorbed and decomposed by the biofilm, so that the sewage is purified. A Chinese utility model patent with publication number CN218115112U discloses a bypass diversion MABR membrane aeration biofilm reactor, which facilitates the discharge of a portion of the air directly into the water by providing a stirring device, and the water is stirred by the airflow, thereby increasing the contact area between the water and the biofilm on the outside of the membrane fiber group and improving the reaction efficiency; a Chinese utility model patent with publication number CN215855327U discloses a membrane aeration biofilm reactor, in which a portion of the air is introduced into an aeration stirring air inlet pipe through an aeration fan, the aeration stirring air inlet pipe is connected to an aeration stirring branch pipe installed under the MABR membrane stack, both ends of the aeration stirring branch pipe are placed on a bracket at the bottom of the membrane frame, and a plurality of aeration holes are provided on the aeration stirring branch pipe, which are used to stir the sewage with the airflow in the aeration holes.

[0003] In the related art, in order to improve the contact effect between sewage and membrane fiber groups, the existing MABR membrane bioreactor usually has a corresponding stirring component arranged underneath it, which stirs the sewage by utilizing a portion of air. However, the stirring method of the existing reactors mostly adopts fixed stirring, and the stirring range is small, which indirectly affects the reaction efficiency. In order to increase the stirring range, different numbers of aeration pipes are usually arranged for operation, but the production cost of the reactor is increased and the energy-saving and environmental protection functions are lacking. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a MABR membrane bioreactor sewage treatment device, which discharges a portion of the sewage into a plurality of aeration pipes and sprays it out through the aeration nozzles on the aeration pipes, thereby stirring the sewage and improving the contact effect between the sewage and the biofilm on the outside of the membrane fiber group; a driving assembly installed on the drainage pipe can be used to rotationally drive the plurality of aeration pipes, thereby stirring the sewage over a large range, increasing the contact area between water and the biofilm on the outside of the membrane fiber group and also playing a role in auxiliary oxygen supply, thereby enhancing the reaction efficiency; and the flushing assembly can be used to flush and clean the membrane fiber group, thereby improving the practicability of the equipment and solving the problem that the existing MABR membrane bioreactor has a fixed stirring mode, a small stirring range, reduced sewage surging effect, and affected the reaction effect of the membrane fiber group.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a MABR membrane bioreactor sewage treatment device, comprising an upper bracket and a lower bracket, wherein the upper bracket and the lower bracket are fixedly connected by a connecting frame, a membrane wire group is installed between the upper bracket and the lower bracket, the interior of the lower bracket is hollow, and the interior of the lower bracket is connected to the membrane wire group, the top of the lower bracket is fixedly connected with a Y-shaped air inlet pipe, and the back of the lower bracket is provided with a stirring assembly; The stirring assembly includes an air collecting frame fixed to the back of the lower bracket through a bracket, the front of the air collecting frame is rotatably connected to a plurality of aeration tubes, and the outer surfaces of the tops of the plurality of aeration tubes are fixedly connected to a row of aeration nozzles, the top of the air collecting frame is fixedly connected to a drainage pipe, a drainage assembly is arranged between the drainage pipe and the top of the Y-shaped air inlet pipe, a driving assembly for rotationally driving the plurality of aeration tubes is arranged on the drainage pipe, and a flushing assembly is arranged on the front of the lower bracket.

[0006] Preferably, the drainage assembly includes a Y-shaped air injection pipe fixedly connected between the drainage pipe and the top end of the Y-shaped air inlet pipe, and both exhaust ends of the Y-shaped air injection pipe are equipped with ball valves.

[0007] Preferably, the driving assembly includes a gear fixed to one end of a plurality of aeration tubes and a plurality of tooth plates meshing with the outer surface of the gear, a connecting plate is fixedly connected between the tops of the plurality of tooth plates, two guide frames are slidably connected inside the connecting plate, the bottoms of the two guide frames are fixed to the top of the air collecting frame, and a driving member for driving the connecting plate up and down is provided on the top of the air collecting frame.

[0008] Preferably, the driving member includes a cylindrical frame fixed to the top of the gas collecting frame by a bracket, the drainage pipe is connected to the interior of the cylindrical frame, the interior of the cylindrical frame is rotatably connected to a rotating shaft, the outer surface of the rotating shaft is fixedly connected to a plurality of driving plates, and one end of the rotating shaft extends to the outside of the cylindrical frame.

[0009] Preferably, one end of the rotating shaft is fixedly connected to a circular plate, a convex rod is fixedly connected to the side of the circular plate, and a reciprocating frame is sleeved on the outer surface of the convex rod, and the bottom of the reciprocating frame is fixedly connected to the top of the connecting plate.

[0010] Preferably, the gas injection end of the Y-shaped gas injection pipe is fixedly connected to a water injection pipe, and both the water injection pipe and the gas injection end of the Y-shaped gas injection pipe are installed with a one-way valve.

[0011] Preferably, the flushing assembly includes a main pipe fixed to the front side of the lower bracket, the top of the main pipe is fixedly connected to a row of flushing pipes, and the outer surfaces of the row of flushing pipes are fixedly connected to a group of flushing nozzles, and the lower bracket is provided with a diversion pipe for injecting material into the main pipe.

[0012] Preferably, the bottom of the main pipe is fixedly connected to a conical cylinder, and one end of the diversion pipe is fixedly connected to the inside of the conical cylinder; The bottom of the conical cylinder is slidably connected to a movable rod through a sealing sleeve, the top of the movable rod extends to the interior of the conical cylinder, the top of the movable rod is fixedly connected to a conical piston plate, the top of the interior of the conical cylinder is set to a conical shape, and the bottom end of the movable rod is fixedly connected to a buoyancy plate.

[0013] (III) Beneficial effects Compared with the prior art, the present invention provides a MABR membrane bioreactor sewage treatment device, which has the following beneficial effects: 2. The present invention facilitates the discharge of clean water from the outside into the Y-shaped air injection pipe through the setting of the water injection pipe, and then discharges it into the flushing assembly through the stirring assembly and the lower bracket, so that the flushing assembly cooperates with the stirring assembly to flush and clean the membrane fiber group, has good self-cleaning function, does not require additional cleaning structure, improves the practicality of the MABR membrane bioreactor, and facilitates the clean water to flow better to the flushing assembly and the stirring assembly through the setting of the one-way valve and the ball valve, thereby improving the cleaning effect.

[0014] 3. The present invention can control the blockage of the conical cylinder by setting the buoyancy plate, so as to prevent the gas or water source from entering the flushing component to perform flushing work during the sewage reaction treatment in the reactor, thereby improving its adsorption reaction effect. When the reactor is moved out of the water, the buoyancy plate can lose the blockage of the conical cylinder, thereby facilitating the gas or liquid drained by the drainage component to enter the flushing component to perform flushing and cleaning work. It has good self-control function, does not require manual operation and does not require the setting of an electric drive source for operation, thereby improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 The rear view of the structure; Figure 3 For the present invention Figure 1 Schematic diagram of the combination of the upper bracket and the lower bracket; Figure 4 For the present invention Figure 2 A schematic diagram of the combination of the stirring component and the driving component; Figure 5 For the present invention Figure 4 Schematic diagram of the structure of the middle drive assembly; Figure 6 For the present invention Figure 4 A schematic cross-sectional view of the middle column frame; Figure 7 For the present invention Figure 1 A schematic diagram of the structure of the middle drainage component; Figure 8 For the present invention Figure 1 Schematic diagram of the structure of the middle flushing component; Fig. 9 For the present invention Figure 8 Partial cross-sectional view of the flushing assembly.

[0016] In the figure: 1. upper bracket; 2. lower bracket; 3. membrane wire group; 4. Y-shaped air intake pipe; 5. stirring assembly; 51. air collecting frame; 52. aeration pipe; 53. aeration nozzle; 54. drainage pipe; 6. Drainage assembly; 61. Y-type air injection pipe; 62. Ball valve; 63. Water injection pipe; 64. Check valve; 7. driving assembly; 71. gear; 72. tooth plate; 73. connecting plate; 74. guide frame; 75, driving member; 751, cylindrical frame; 752, rotating shaft; 753, driving plate; 754, circular plate; 755, protruding rod; 756, reciprocating frame; 8. Flushing assembly; 81. Main pipe; 82. Flushing pipe; 83. Flushing nozzle; 84. Diversion pipe; 85. Conical cylinder; 86. Movable rod; 87. Conical piston plate; 88. Buoyancy plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1: See attached Figure 1-9 A MABR membrane bioreactor sewage treatment device comprises an upper bracket 1 and a lower bracket 2, the upper bracket 1 and the lower bracket 2 are fixedly connected by a connecting frame, a membrane wire group 3 is installed between the upper bracket 1 and the lower bracket 2, the interior of the lower bracket 2 is hollow, and the interior of the lower bracket 2 is connected to the membrane wire group 3, the top of the lower bracket 2 is fixedly connected with a Y-shaped air inlet pipe 4, and the back of the lower bracket 2 is provided with a stirring component 5; By setting the stirring component 5, the sewage can be stirred to improve the contact effect between the sewage and the biofilm outside the membrane fiber group 3, and the setting of the Y-shaped air inlet pipe 4 is improved to discharge the gas into the membrane fiber group 3 for sewage reaction treatment; The stirring assembly 5 includes an air collecting frame 51 fixed to the back of the lower bracket 2 through a bracket, a plurality of aeration tubes 52 are rotatably connected to the front of the air collecting frame 51, and the outer surfaces of the tops of the plurality of aeration tubes 52 are fixedly connected to a row of aeration nozzles 53, a drainage tube 54 is fixedly connected to the top of the air collecting frame 51, a drainage assembly 6 is arranged between the drainage tube 54 and the top of the Y-shaped air inlet pipe 4, a driving assembly 7 for rotating and driving the plurality of aeration tubes 52 is arranged on the drainage tube 54, and a flushing assembly 8 is arranged on the front of the lower bracket 2; The drainage assembly 6 is used to discharge the gas produced by the aerator into the drainage pipe 54 and the interior of the Y-shaped air inlet pipe 4, and then discharged into the membrane fiber group 3 through the Y-shaped air inlet pipe 4 for biological treatment of the wastewater. The drainage pipe 54 is used to discharge a portion of the gas into a plurality of aeration pipes 52, and then sprayed out through the aeration nozzles 53 on the aeration pipes 52, thereby stirring the wastewater and improving the contact effect between the wastewater and the biological film outside the membrane fiber group 3. The driving assembly 7 installed on the drainage pipe 54 can be used to rotationally drive several aeration pipes 52, thereby stirring the sewage over a large range, increasing the contact area between water and the biological film on the outside of the membrane fiber group 3, and also serving as an auxiliary oxygen supply, thereby enhancing the reaction efficiency, and can cooperate with the flushing assembly 8 to flush and clean the membrane fiber group 3, thereby improving the practicability of the equipment.

[0019] See attached Figure 7 The drainage assembly 6 includes a Y-shaped air injection pipe 61 fixedly connected between the drainage pipe 54 and the top of the Y-shaped air inlet pipe 4, and both exhaust ends of the Y-shaped air injection pipe 61 are equipped with ball valves 62; The Y-shaped air injection pipe 61 is provided to inject air into the interior of the drainage pipe 54 and the Y-shaped air inlet pipe 4, and the gas is injected into the interior of the lower bracket 2 through the Y-shaped air inlet pipe 4, so that the gas enters the membrane filament group 3, and the carbon source and nitrogen source pollutants in the sewage are absorbed and consumed by the membrane filament group 3, thereby forming a sewage treatment operation. The two ball valves 62 are provided to control the amount of gas entering the drainage pipe 54 and the Y-shaped air inlet pipe 4, so as to fully utilize the total gas volume, thereby improving the sewage treatment effect.

[0020] See attached Figures 4 to 6The driving assembly 7 includes a gear 71 fixed to one end of a plurality of aeration tubes 52 and a plurality of tooth plates 72 meshing with the outer surface of the gear 71. A connecting plate 73 is fixedly connected between the tops of the plurality of tooth plates 72. Two guide frames 74 are slidably connected inside the connecting plate 73. The bottoms of the two guide frames 74 are fixed to the top of the gas collecting frame 51. A driving member 75 for driving the connecting plate 73 up and down is provided on the top of the gas collecting frame 51. The driving member 75 includes an electric telescopic rod for driving the connecting plate 73 up and down, which is used to drive the connecting plate 73 to move up and down. Through the up and down movement of the connecting plate 73, a plurality of tooth plates 72 can be driven to move up and down, and then a plurality of gears 71 can be driven to rotate forward and reverse through meshing, and finally a plurality of aeration tubes 52 can be driven to rotate forward and reverse, so as to adjust the aeration angle. The forward and reverse rotation angles are both zero to sixty degrees, so that the sewage can be stirred over a large range, thereby increasing the contact area between water and the biological film on the outside of the membrane fiber group 3, and at the same time also playing the role of auxiliary oxygen supply, thereby improving the reaction efficiency.

[0021] See attached Figures 4 to 6 The driving member 75 includes a cylindrical frame 751 fixed to the top of the gas collecting frame 51 through a bracket, the drainage pipe 54 is connected to the inside of the cylindrical frame 751, the inside of the cylindrical frame 751 is rotatably connected to a rotating shaft 752, the outer surface of the rotating shaft 752 is fixedly connected to a plurality of driving plates 753, and one end of the rotating shaft 752 extends to the outside of the cylindrical frame 751; one end of the rotating shaft 752 is fixedly connected to a circular plate 754, the side of the circular plate 754 is fixedly connected to a convex rod 755, and the outer surface of the convex rod 755 is sleeved with a reciprocating frame 756, and the bottom of the reciprocating frame 756 is fixedly connected to the top of the connecting plate 73; The drainage tube 54 is fixedly connected to the inside of the cylindrical frame 751, so that the gas inside the drainage tube 54 needs to enter the cylindrical frame 751 before entering the gas collecting frame 51. Through the injection of gas, its gas pressure can drive the plurality of driving plates 753 to rotate, and then drive the rotating shaft 752 to rotate. Through the rotation of the rotating shaft 752, the circular plate 754 can be driven to rotate, and then the convex rod 755 can be driven to rotate in a circle. Through the circular motion of the convex rod 755, the reciprocating frame 756 can be driven to reciprocate up and down, and finally the plurality of tooth plates 72 can be driven to reciprocate up and down through the connecting plate 73, forming the forward and reverse rotation of the plurality of aeration tubes 52, making full use of the gas flow force, without the need to set up an additional electric drive source for driving, thereby improving the energy-saving and environmental protection performance of the reactor.

[0022] Embodiment 2: Based on embodiment 1, the difference is that; See attached Figure 7 The gas injection end of the Y-shaped gas injection pipe 61 is fixedly connected to a water injection pipe 63, and both the water injection pipe 63 and the gas injection end of the Y-shaped gas injection pipe 61 are installed with a one-way valve 64; Through the setting of the water injection pipe 63, it is convenient to connect with a third-party water pump. The external clean water source is discharged into the Y-shaped air injection pipe 61 through the water pump, and then discharged into the flushing component 8 through the stirring component 5 and the lower bracket 2, so that the flushing component 8 cooperates with the stirring component 5 to flush and clean the membrane fiber group 3. It has good self-cleaning function and does not require additional cleaning structure, which improves the practicality of the MABR membrane bioreactor. Through the setting of the one-way valve 64 and the ball valve 62, the clean water source can flow better to the flushing component 8 and the stirring component 5, thereby improving its cleaning effect.

[0023] Embodiment 3: Based on embodiment 1, the difference is that; See attached Figure 8 and Fig. 9 The flushing assembly 8 includes a main pipe 81 fixed to the front of the lower bracket 2, the top of the main pipe 81 is fixedly connected to a row of flushing pipes 82, and the outer surfaces of the row of flushing pipes 82 are fixedly connected to a group of flushing nozzles 83, and the lower bracket 2 is provided with a shunt pipe 84 for injecting material into the main pipe 81; the bottom of the main pipe 81 is fixedly connected to a conical cylinder 85, and one end of the shunt pipe 84 is fixedly connected to the inside of the conical cylinder 85; The shunt pipe 84 is used to discharge the gas or water source inside the lower support 2 into the conical tube 85, and then discharged into the main pipe 81 through the conical tube 85, and then the membrane wire group 3 is flushed and cleaned through the flushing nozzles 83 on a row of flushing pipes 82; The bottom of the conical cylinder 85 is slidably connected to a movable rod 86 through a sealing sleeve, the top of the movable rod 86 extends to the inside of the conical cylinder 85, the top of the movable rod 86 is fixedly connected to a conical piston plate 87, the top of the inside of the conical cylinder 85 is set to a conical shape, and the bottom of the movable rod 86 is fixedly connected to a buoyancy plate 88; When the reactor is placed in a sewage pool for membrane biological reaction, the buoyancy plate 88 can move upward, and then the movable rod 86 can drive the conical movable plate 87 to move upward, so that the conical movable plate 87 blocks the conical cylinder 85 to prevent the gas inside the lower bracket 2 from entering therein, thereby ensuring its reaction effect; On the contrary, the reactor is lifted out of the sewage pool, and the buoyancy plate 88, the movable rod 86 and the gravity of the conical piston plate 87 can form a descending operation, so that the conical piston plate 87 loses the blockage of the conical cylinder 85, and a water or gas injection operation is formed, and the membrane wire group 3 is flushed and cleaned by water or gas; By setting the buoyancy plate 88, the blockage of the conical cylinder 85 can be controlled, so that the reactor can prevent gas or water from entering the flushing component 8 for flushing during sewage reaction treatment, thereby improving its adsorption reaction effect. When the reactor moves out of the water, the buoyancy plate 88 can lose the blockage of the conical cylinder 85, thereby facilitating the gas or liquid drained by the drainage component 6 to enter the flushing component 8 to perform flushing and cleaning. It has good self-control function, does not require manual operation, and does not require the setting of an electric drive source for operation, thereby improving the convenience of operation.

[0024] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A MABR membrane bioreactor sewage treatment device, comprising an upper support (1) and a lower support (2), wherein the upper support (1) and the lower support (2) are fixedly connected via a connecting frame, and a membrane fiber group (3) is installed between the upper support (1) and the lower support (2), characterized in that: The interior of the lower support (2) is hollow, and the interior of the lower support (2) is connected to the membrane wire group (3). The top of the lower support (2) is fixedly connected to a Y-shaped air inlet pipe (4), and the back of the lower support (2) is provided with a stirring assembly (5); The stirring assembly (5) comprises an air collecting frame (51) fixed to the back of the lower bracket (2) through a bracket, the front of the air collecting frame (51) is rotatably connected to a plurality of aeration tubes (52), and the outer surfaces of the tops of the plurality of aeration tubes (52) are fixedly connected to a row of aeration nozzles (53), the top of the air collecting frame (51) is fixedly connected to a drainage tube (54), a drainage assembly (6) is arranged between the drainage tube (54) and the top of the Y-shaped air inlet pipe (4), a driving assembly (7) for driving the plurality of aeration tubes (52) to rotate is arranged on the drainage tube (54), and a flushing assembly (8) is arranged on the front of the lower bracket (2).

2. A MABR membrane bioreactor sewage treatment device according to claim 1, characterized in that: The drainage assembly (6) comprises a Y-shaped air injection pipe (61) fixedly connected between the drainage pipe (54) and the top end of the Y-shaped air inlet pipe (4), and both exhaust ends of the Y-shaped air injection pipe (61) are equipped with ball valves (62).

3. A MABR membrane bioreactor sewage treatment device according to claim 1, characterized in that: The driving assembly (7) comprises a gear (71) fixed to one end of a plurality of aeration tubes (52) and a plurality of tooth plates (72) meshing with the outer surface of the gear (71); a connecting plate (73) is fixedly connected between the tops of the plurality of tooth plates (72); two guide frames (74) are slidably connected inside the connecting plate (73); the bottoms of the two guide frames (74) are fixed to the top of the gas collecting frame (51); and a driving member (75) for driving the connecting plate (73) up and down is provided on the top of the gas collecting frame (51).

4. A MABR membrane bioreactor sewage treatment device according to claim 3, characterized in that: The driving member (75) comprises a columnar frame (751) fixed to the top of the gas collecting frame (51) by a bracket, the drainage pipe (54) is connected to the inside of the columnar frame (751), the inside of the columnar frame (751) is rotatably connected to a rotating shaft (752), the outer surface of the rotating shaft (752) is fixedly connected to a plurality of driving plates (753), and one end of the rotating shaft (752) extends to the outside of the columnar frame (751).

5. A MABR membrane bioreactor sewage treatment device according to claim 4, characterized in that: One end of the rotating shaft (752) is fixedly connected to a circular plate (754), a convex rod (755) is fixedly connected to the side of the circular plate (754), and a reciprocating frame (756) is sleeved on the outer surface of the convex rod (755), and the bottom of the reciprocating frame (756) is fixedly connected to the top of the connecting plate (73).

6. A MABR membrane bioreactor sewage treatment device according to claim 2, characterized in that: The gas injection end of the Y-shaped gas injection pipe (61) is fixedly connected to a water injection pipe (63), and both the water injection pipe (63) and the gas injection end of the Y-shaped gas injection pipe (61) are installed with a one-way valve (64).

7. A MABR membrane bioreactor sewage treatment device according to claim 1, characterized in that: The flushing assembly (8) comprises a main pipe (81) fixed to the front face of the lower bracket (2); the top of the main pipe (81) is fixedly connected to a row of flushing pipes (82); the outer surfaces of the row of flushing pipes (82) are all fixedly connected to a group of flushing nozzles (83); and the lower bracket (2) is provided with a shunt pipe (84) for injecting material into the main pipe (81).

8. A MABR membrane bioreactor sewage treatment device according to claim 7, characterized in that: The bottom of the main pipe (81) is fixedly connected to a conical cylinder (85), and one end of the flow distribution pipe (84) is fixedly connected to the inside of the conical cylinder (85); The bottom of the conical cylinder (85) is slidably connected to a movable rod (86) via a sealing sleeve, the top of the movable rod (86) extends into the interior of the conical cylinder (85), the top of the movable rod (86) is fixedly connected to a conical piston plate (87), the top of the interior of the conical cylinder (85) is configured to be in a conical shape, and the bottom of the movable rod (86) is fixedly connected to a buoyancy plate (88).

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