A suspended large algae cultivation facility

Abstract

This invention discloses a suspended large-scale algae cultivation facility, including support poles. The support poles are square in design, with a base plate installed through their outer surface. The outer surface of the top plate is uniformly textured with anti-slip patterns. A sliding mechanism is installed inside the support poles, allowing them to be fixed after being inserted into the muddy water, thus improving stability. In this suspended large-scale algae cultivation facility, the support poles are inserted into the base plate, and the first screw is tightened to secure the base plate. The support poles are then placed in the desired cultivation area. The support poles are then tapped to separate the mud along the inclination of the base cone. A push-out rod is then inserted to push open the base cone, causing it to protrude from the side surface of the support pole, forming a barb. Simultaneously, the base cone is held in place by the push-out rod. When water flows and moves the floating bucket, the support poles will not be carried away, preventing the facility from being lost due to water current.

Description

Technical Field

[0001] This invention relates to the field of algae cultivation technology, specifically to a suspended large-scale algae cultivation facility. Background Technology

[0002] Algae are aquatic algae that typically grow in freshwater, though some also thrive in the ocean. They play a vital role in ecosystems, providing oxygen to aquatic plants through photosynthesis and serving as a food source for others. Algae cultivation is commonly used to produce algal protein, algal foods, or for water treatment. The development of algae cultivation technology dates back to the 1970s, when people attempted to cultivate algae artificially to produce food to meet growing consumer demand. Today, algae cultivation technology has made significant progress, allowing for various methods such as pond and aquarium cultivation to produce and harvest algae. However, in existing algae cultivation methods, the floats on the cultivation racks often shift due to water ripples, causing the supports to be pulled out and resulting in the loss of cultivated algae and losses for farmers. Summary of the Invention

[0003] The purpose of this invention is to provide a suspended large-scale algae cultivation facility to solve the problem mentioned in the background art of water wave scouring causing the float to pull out the fixed pile.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a suspended large-scale algae cultivation facility, comprising a support rod, the support rod being square in design, with a nut fixedly installed at one end of the support rod above the water surface; a base plate being installed through the outer surface of the support rod, and the base plate being slidably connected to the support rod; a top plate being installed through the end of the support rod away from the base plate, and the top plate being slidably connected to the support rod; the support rods being located at the four corners of the top plate; anti-slip textures being evenly distributed on the outer surface of the top plate, and the anti-slip textures being located between the support rods; and a sliding mechanism being provided inside the support rod, which allows the support rod to be fixed after being inserted into the mud in the water, thereby improving the stability of the support rod.

[0005] Preferably, the sliding mechanism includes: a bottom cone, which is slidably mounted on the end of the support rod away from the top plate, and a first spring is provided between the support rod and the bottom cone. The outer surface of the bottom cone is inclined, and a groove is provided inside the bottom cone, with an inclined surface at the bottom of the groove.

[0006] Using the above technical solution, as the support rod is driven into the riverbed, the bottom cone will separate the soil at the bottom, making it easier for the support rod to be driven into the riverbed. After the support rod is driven into the bottom of the riverbed, the bottom cone can be opened by inserting a push rod, allowing the bottom cone to slide inside the support rod. By opening the bottom cone, the support rod forms a barb, and the push rod can prevent the bottom cone from retracting. When disassembly is required, the push rod can be pulled out of the support rod, and the bottom cone can be pushed back by the first spring, thus pulling the support rod out of the riverbed. This improves the tensile strength of the support rod, preventing the algae from being washed away.

[0007] Preferably, an ejector rod is installed through the outer surface of the support rod, and the ejector rod and the support rod are slidably connected. The support rod and the ejector rod are concentrically designed. The end of the ejector rod near the bottom cone is designed as an inclined cone. The outer surface of the end of the ejector rod near the top plate is provided with threads. The end of the ejector rod away from the bottom plate is provided with a handle. The groove in the bottom cone is concentrically designed with the ejector rod. One end of the ejector rod fits against the outer surface of the inclined surface. The thread on the outer surface of one end of the ejector rod is threadedly connected to the nut.

[0008] Using the above technical solution, after the support rod is driven into the bottom of the riverbed, the push rod can be inserted into the support rod. Then, the push rod is rotated so that it is screwed into the nut, and the tip of the push rod abuts against the inclined plane. As the push rod rotates, the inclined plane is opened up, which in turn opens up the bottom cone, reducing the force required to open the bottom cone and making it easier to open the bottom cone.

[0009] Preferably, a grid block is fixedly installed on the outer surface of the support rod near the base plate, and the grid block and the support rod are concentrically designed. The side surface of the grid block is in contact with the outer surface of the base plate. A first screw is threadedly installed on the side surface of the support rod near the first spring, and the base plate is sandwiched between the first screw and the grid block.

[0010] Using the above technical solution, the position of the base plate can be limited by the blocking block, and the base plate can be fixed by the first screw, so that the base plate can be quickly connected and fixed.

[0011] Preferably, a positioning block is installed through the outer surface of the support rod, and the outer surface of the positioning block is in contact with the outer surface of the support rod, and a through hole is opened on the side of the positioning block away from the base plate.

[0012] Using the above technical solution, the positioning block can be fixed at the bottom of the riverbed by inserting the support rod. At the same time, the square design of the support rod can fix the position and direction of the positioning block. The positioning block can be connected to expand and position the support rod, so that the expanded top plates will not collide with each other.

[0013] Preferably, the bottom plate has a mesh grid inside, and a collar is fixedly installed on the outer surface of the mesh grid near the top plate.

[0014] By adopting the above technical solution, water can flow through the mesh grid during the installation of the base plate, allowing the base plate to fall smoothly and quickly.

[0015] Preferably, a floating bucket is fixedly installed on the outer surface of the top plate near the wire mesh, and the floating bucket is arranged around the top plate. A second screw is threaded on the side surface of the top plate, and the side surface of the second screw is in contact with the outer surface of the top plate.

[0016] Using the above technical solution, the top plate can be made to float on the water surface by using a floating bucket, and the top plate can be limited by the second screw, so that the top plate can rise and fall with the water level, allowing the algae seedlings to always remain submerged in the water.

[0017] Preferably, a crossbar is fixedly installed on the inner side of the top plate, and a winding post is fixedly installed on the outer surface of the crossbar. The winding post is arranged in a straight line on the outer surface of the crossbar. A rope is provided between the crossbar and the collar, and the rope passes through the collar and the crossbar.

[0018] Using the above technical solution, the rope can be twisted into a figure-eight shape by using a crossbar and a loop, and then wrapped around the winding post to fix the rope.

[0019] Preferably, the side surface of the crossbar is provided with a rotating locking mechanism, which clamps the rope so that it will not be loosened.

[0020] By using the above technical solution, one end of the rope after it has been wrapped can be clamped to prevent the rope from opening automatically, and the rope can be easily lifted to remove the net bag.

[0021] Preferably, the rotating engaging mechanism includes: a lever block, which is rotatably mounted on the side surface of the crossbar and has an L-shaped design. A pressure block is fixedly mounted on the end of the lever block away from the pivot. A groove is provided on the side of the pressure block near the crossbar, and a toothed block is provided in the groove of the pressure block. A limit post is slidably mounted on the end of the crossbar near the pivot of the lever block, and a second spring is provided between the limit post and the crossbar. The outer surface of the lever block is in contact with the side surface of the limit post, and the limit post has a square design. A rope is engaged in the groove of the pressure block, and the rope is in contact with the toothed block in the groove of the pressure block. A binding knot is evenly fixed on one side of the outer surface of the rope, and a net bag is fixed on the outer surface of the binding knot.

[0022] Using the above technical solution, the limiting post can be pressed to compress the second spring. Then, the lever block can be rotated, causing the pressure block to rotate as well, disengaging the pressure block from the side surface of the crossbar. The rope will then be pulled out, allowing for rope adjustment. After adjustment, the lever block can be rotated again, at which point the second spring will push the limiting post out, causing it to engage with the side surface of the lever block. This allows the pressure block and crossbar to clamp and fix the rope in place. The algae seedlings can be covered with net bags, preventing them from falling and aquatic animals from eating the algae. The distance between net bags can be determined by the knotted blocks, and the knotted blocks can also be used to leverage the rope, making it easier to pull without slipping and preventing the rope from automatically loosening.

[0023] Compared with the prior art, the beneficial effects of the present invention are: This suspended large-scale algae cultivation facility:

[0024] 1. Insert the support poles into the base plate and tighten the first screw to fix the base plate. Then place the support poles into the aquaculture site where they need to be installed. Then knock the support poles down to separate the soil along the inclination of the bottom cone, so that the support poles can be smoothly driven into the riverbed. Then insert the push rod to push the bottom cone open, so that the bottom cone protrudes from the support pole, making the support pole form a barb. At the same time, the bottom cone is held in place by the push rod. When the water flow washes away the floating bucket, the support poles will not be carried out, causing the equipment to be carried away by the water flow and lost.

[0025] 2. After the support rod is inserted into the riverbed, as the jacking rod is inserted, one end of the jacking rod will come into contact with the inclined plane. Then, the jacking rod is rotated so that it is screwed into the nut. As the jacking rod is screwed in, it will move forward and push open the bottom cone, converting the force of inserting the jacking rod into a rotational force, making it easier for the bottom cone to be opened.

[0026] 3. Once the installation is complete, the net bag containing algae can be tied to the binding knot. The net bag prevents aquatic animals from eating the algae and also prevents the algae seedlings from falling off. When harvesting is needed, the rope can be pulled out of the water to remove the finished product from the net bag. Then, the seedlings can be put back into the net bag. The binding knot can effectively provide leverage when pulling the rope. After harvesting and seedling placement are completed, the rope can be wound and twisted into a figure-eight shape and wrapped around the winding post. Then, pull down the rope and push back the lever block, causing the second spring to lift the limit post, which will lock the lever block in place. This will cause the pressure block and the crossbar to clamp one end of the rope tightly without the need to tie a knot to secure it. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the top and bottom plates of the present invention;

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the support rod and the top plate of the present invention;

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the top plate and crossbar of the present invention;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the wire mesh and the interlocking rings of the present invention;

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of the positioning block of the present invention;

[0032] Figure 6 This is a schematic diagram of the three-dimensional structure of the support rod and the bottom cone of the present invention;

[0033] Figure 7 This is a cross-sectional three-dimensional structural diagram of the lever block and the limiting post of the present invention;

[0034] Figure 8 This is a three-dimensional structural diagram of the lever block and pressure block after rotation according to the present invention;

[0035] Figure 9 This is a cross-sectional three-dimensional structural diagram of the support rod and the grid block of the present invention;

[0036] Figure 10 This is a schematic diagram of the exploded three-dimensional structure of the support rod and the bottom cone of the present invention;

[0037] Figure 11 This is a schematic diagram of the three-dimensional structure of the binding block knot and mesh bag of the present invention.

[0038] In the diagram: 1. Support rod; 2. Top plate; 3. Bottom plate; 4. Push rod; 5. Barrier block; 6. Bottom cone; 7. First spring; 8. Inclined surface; 9. Positioning block; 10. First screw; 11. Nut; 12. Second screw; 13. Anti-slip texture; 14. Crossbar; 15. Winding post; 16. Actuating block; 17. Second spring; 18. Limiting post; 19. Pressure block; 20. Mesh grid; 21. Loop ring; 22. Rope; 23. Binding knot; 24. Net bag; 25. Floating bucket. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figure 1-11This invention provides a technical solution: a suspended large-scale algae cultivation facility, including a support rod 1, which is square in design, with a nut 11 fixedly installed at one end of the support rod 1 above the water surface. A base plate 3 is installed through the outer surface of the support rod 1, and the base plate 3 is slidably connected to the support rod 1. A top plate 2 is installed through the end of the support rod 1 away from the base plate 3, and the top plate 2 is slidably connected to the support rod 1. The support rod 1 is located at the four corners of the top plate 2. Anti-slip textures 13 are evenly distributed on the outer surface of the top plate 2, and the anti-slip textures 13 are located between the support rods 1. A sliding mechanism is provided inside the support rod 1, which allows the support rod 1 to be fixed after being inserted into the mud in the water, thereby improving the stability of the support rod 1.

[0041] The support rod 1 can be used to position the bottom plate 3 and the top plate 2. At the same time, the anti-slip texture 13 on the outer surface of the top plate 2 can effectively prevent workers from slipping and falling into the water when walking on the top plate 2.

[0042] The sliding mechanism includes: a bottom cone 6, which is slidably installed on the end of the support rod 1 away from the top plate 2, and a first spring 7 is provided between the support rod 1 and the bottom cone 6. The outer surface of the bottom cone 6 is inclined, and a groove is provided inside the bottom cone 6. The bottom of the groove of the bottom cone 6 is provided with an inclined surface 8.

[0043] Insert the support rods 1 into the base plate 3 and fix them with the first screws 10. Then, place the facility in the required installation position and insert the support rods 1 into the riverbed. The inclined design of the bottom cone 6 separates the soil, making it easier for the support rods 1 to be inserted into the riverbed. Then, insert the push rod 4, which pushes the bottom cone 6 open by squeezing the inclined surface 8. The bottom cone 6 protrudes from the side surface of the support rod 1 to form a barb shape, which improves the tensile strength of the support rod 1 and reduces the probability of the support rod 1 being carried away when the water flow impacts the floating bucket 25, thus reducing the probability of the facility being lost.

[0044] The outer surface of the support rod 1 is through which the ejector rod 4 is installed, and the ejector rod 4 is slidably connected to the support rod 1. The support rod 1 and the ejector rod 4 are concentrically designed. The end of the ejector rod 4 near the bottom cone 6 is designed as an inclined cone. The outer surface of the end of the ejector rod 4 near the top plate 2 is provided with threads. The end of the ejector rod 4 away from the bottom plate 3 is provided with a handle. The groove in the bottom cone 6 is concentrically designed with the ejector rod 4. One end of the ejector rod 4 is in contact with the outer surface of the inclined surface 8. The thread on the outer surface of one end of the ejector rod 4 is threadedly connected to the nut 11.

[0045] After the support rod 1 is inserted into the riverbed, the ejector rod 4 can be inserted into the support rod 1 so that one end of the ejector rod 4 is in contact with the inclined plane 8. Then, the handle of the ejector rod 4 is rotated to move the ejector rod 4 inside the support rod 1, pushing out the bottom cone 6. When it needs to be removed, simply take out the ejector rod 4, and the bottom cone 6 can be pushed back by the first spring 7, so that the support rod 1 can be removed. The insertion of the ejector rod 4 is converted into rotation, so that the bottom cone 6 can be easily opened.

[0046] A grid block 5 is fixedly installed on the outer surface of the support rod 1 near the base plate 3. The grid block 5 and the support rod 1 are concentrically designed, and the side surface of the grid block 5 is in contact with the outer surface of the base plate 3. A first screw 10 is threadedly installed on the side surface of the support rod 1 near the first spring 7, and the base plate 3 is sandwiched between the first screw 10 and the grid block 5.

[0047] The position of the base plate 3 can be fixed and limited by the first screw 10 and the stop block 5, so that the base plate 3 will not move at will.

[0048] A positioning block 9 is installed through the outer surface of the support rod 1, and the outer surface of the positioning block 9 is in contact with the outer surface of the support rod 1. A through hole is provided on the side of the positioning block 9 away from the base plate 3.

[0049] When there is a plan to expand, the positioning block 9 can be inserted into the support rod 1. The blocking block 5 will drive the positioning block 9 to press down together, so that when the expansion is extended, the extended support rod 1 can be inserted into the other end of the positioning block 9, so that the top plates 2 will not collide with each other, and at the same time, the top plates 2 can be connected and close to each other, making it convenient for workers to move on the top plates 2.

[0050] The bottom plate 3 has a wire mesh 20 inside, and a collar 21 is fixedly installed on the outer surface of the wire mesh 20 near the top plate 2.

[0051] The mesh 20 allows water to pass through when the support pole 1 and base plate 3 are lowered, enabling the facility to descend smoothly to the desired installation location without being deflected by the thrust generated during descent.

[0052] A floating bucket 25 is fixedly installed on the outer surface of the top plate 2 near the wire mesh 20, and the floating bucket 25 is arranged around the top plate 2. A second screw 12 is threaded on the side surface of the top plate 2, and the side surface of the second screw 12 is in contact with the outer surface of the top plate 2.

[0053] The float 25 keeps the top plate 2 afloat on the water surface, while the second screw 12 limits the top plate 2 so that it does not come off.

[0054] A crossbar 14 is fixedly installed on the inner side of the top plate 2, and a winding post 15 is fixedly installed on the outer surface of the crossbar 14. The winding post 15 is arranged in a straight line on the outer surface of the crossbar 14. A rope 22 is arranged between the crossbar 14 and the collar 21, and the rope 22 passes through the collar 21 and the crossbar 14.

[0055] A wooden board can be placed on the surface of the top plate 2 by means of the crossbar 14, so that the board will not break due to excessive length. At the same time, the rope 22 can be restricted between the loop 21 and the crossbar 14 by means of the loop 21 and the crossbar 14, and the rope 22 is wound by the winding post 15. When harvesting algae, the algae can be taken out and the seedlings can be put into the net bag 24, so that the net bag 24 is put into the other side as the rope 22 moves.

[0056] A rotating locking mechanism is provided on the side surface of the crossbar 14 to clamp the rope 22 and prevent it from being released. The rotating locking mechanism includes: a lever block 16, which is rotatably mounted on the side surface of the crossbar 14 and has an L-shaped design. A pressure block 19 is fixedly installed on the end of the lever block 16 away from the pivot. A groove is provided on the side of the pressure block 19 near the crossbar 14, and a toothed block is provided in the groove of the pressure block 19. A limit post 18 is slidably installed on the end of the crossbar 14 near the pivot of the lever block 16, and a second spring 17 is provided between the limit post 18 and the crossbar 14. The outer surface of the lever block 16 is in contact with the side surface of the limit post 18, and the limit post 18 has a square design. The rope 22 is locked in the groove of the pressure block 19, and the rope 22 is in contact with the toothed block in the groove of the pressure block 19.

[0057] By pressing the limiting post 18, the limiting post 18 retracts into the crossbar 14. Then, the lever block 16 can be rotated, causing the pressure block 19 of the lever block 16 to rotate as well. This causes the pressure block 19 to disengage from the side surface of the crossbar 14, allowing the rope 22 to be removed from the pressure block 19. The rope 22 can then be pulled out to harvest the net bag 24. After harvesting the mature seedlings from the net bag 24, the seedlings can be put back into the net bag 24. As the net bag 24 is pulled out of the water, the net bag 22 on the rope 22... 4 will sink to the other side of the crossbar 14. After harvesting and planting the seedlings, the rope 22 is tied and the end of the rope 22 is attached to one side of the crossbar 14. Then, the lever block 16 is pushed. As the lever block 16 rotates, the limiting post 18 is pushed out by the second spring 17, so that the limiting post 18 and the lever block 16 are engaged. The rope 22 is inserted into the pressure block 19, which, together with the crossbar 14, clamps the end of the rope 22. There is no need to tie the rope 22, saving the operation of tying and untying the knot.

[0058] A binding knot 23 is evenly fixed on one side of the outer surface of the rope 22, and a net bag 24 is fixed on the outer surface of the binding knot 23.

[0059] The distance between the net bags 24 can be determined by the knot 23, and there is a better leverage point when pulling the rope 22. The net bags 24 can effectively prevent aquatic organisms from eating the algae and prevent the algae from falling off.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A suspended large-scale algae cultivation facility, comprising support rods (1), the support rods (1) being square in design, and a nut (11) fixedly installed at one end of the support rods (1) above the water surface; a base plate (3) is installed through the outer surface of the support rods (1), and the base plate (3) and the support rods (1) are slidably connected; a top plate (2) is installed through the end of the support rods (1) away from the base plate (3), and the top plate (2) and the support rods (1) are slidably connected; the support rods (1) are located at the four corners of the top plate (2); anti-slip textures (13) are evenly distributed on the outer surface of the top plate (2), and the anti-slip textures (13) are located between the support rods (1), characterized in that: The support rod (1) is equipped with a sliding mechanism inside. The support rod (1) can be fixed after being inserted into the mud in the water through the sliding mechanism, thereby improving the stability of the support rod (1). A crossbar (14) is fixedly installed on the inner side of the top plate (2), and a winding post (15) is fixedly installed on the outer surface of the crossbar (14). The winding post (15) is arranged in a straight line on the outer surface of the crossbar (14). A rope (22) is arranged between the crossbar (14) and the collar (21). The rope (22) passes through the collar (21) and the crossbar (14). The side surface of the crossbar (14) is provided with a rotating locking mechanism, which clamps the rope (22) so that the rope (22) will not be loosened. The rotating engagement mechanism includes: a lever block (16), which is rotatably mounted on the side surface of the crossbar (14). The lever block (16) is L-shaped, and a pressure block (19) is fixedly mounted on the end of the lever block (16) away from the rotating shaft. The pressure block (19) has a groove on the side near the crossbar (14), and a toothed block is provided in the groove of the pressure block (19). A limit post (18) is slidably mounted on the end of the crossbar (14) near the rotating shaft of the lever block (16), and the limit post (18) is slidably mounted on the side of the crossbar (14) near the rotating shaft of the lever block (16). A second spring (17) is provided between the position post (18) and the crossbar (14). The outer surface of the lever block (16) is in contact with the side surface of the limiting post (18), and the limiting post (18) is square. A rope (22) is engaged in the groove of the pressure block (19), and the rope (22) is in contact with the tooth block in the groove of the pressure block (19). A binding knot (23) is evenly fixed on one side of the outer surface of the rope (22), and a net bag (24) is fixed on the outer surface of the binding knot (23).

2. The suspended large-scale algae cultivation facility according to claim 1, characterized in that: The sliding mechanism includes: a bottom cone (6), which is slidably mounted on the end of the support rod (1) away from the top plate (2), and a first spring (7) is provided between the support rod (1) and the bottom cone (6). The outer surface of the bottom cone (6) is inclined, and a groove is provided inside the bottom cone (6). The bottom of the groove of the bottom cone (6) is provided with an inclined surface (8).

3. A suspended large-scale algae cultivation facility according to claim 2, characterized in that: The outer surface of the support rod (1) is through which the ejector rod (4) is installed, and the ejector rod (4) and the support rod (1) are slidably connected. The support rod (1) and the ejector rod (4) are concentrically designed. The end of the ejector rod (4) near the bottom cone (6) is an inclined cone design. The outer surface of the end of the ejector rod (4) near the top plate (2) is provided with threads. The end of the ejector rod (4) away from the bottom plate (3) is provided with a handle. The groove in the bottom cone (6) is concentrically designed with the ejector rod (4). One end of the ejector rod (4) is in contact with the outer surface of the inclined surface (8). The thread on the outer surface of one end of the ejector rod (4) is threadedly connected with the nut (11).

4. A suspended large-scale algae cultivation facility according to claim 1, characterized in that: A baffle block (5) is fixedly installed on the outer surface of the support rod (1) near the base plate (3), and the baffle block (5) and the support rod (1) are concentrically designed. The side surface of the baffle block (5) is in contact with the outer surface of the base plate (3). A first screw (10) is threadedly installed on the side surface of the support rod (1) near the first spring (7), and the base plate (3) is sandwiched between the first screw (10) and the baffle block (5).

5. A suspended large-scale algae cultivation facility according to claim 1, characterized in that: A positioning block (9) is installed through the outer surface of the support rod (1), and the outer surface of the positioning block (9) is in contact with the outer surface of the support rod (1). A through hole is provided on the side of the positioning block (9) away from the bottom plate (3).

6. A suspended large-scale algae cultivation facility according to claim 1, characterized in that: The bottom plate (3) has a wire mesh (20) inside, and a collar (21) is fixedly installed on the outer surface of the wire mesh (20) near the top plate (2).

7. A suspended large-scale algae cultivation facility according to claim 1, characterized in that: A floating bucket (25) is fixedly installed on the outer surface of the top plate (2) near the wire mesh (20), and the floating bucket (25) is arranged around the top plate (2). A second screw (12) is threaded on the side surface of the top plate (2), and the side surface of the second screw (12) is in contact with the outer surface of the top plate (2).

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