A gate for opening and closing of a water conservancy construction

Abstract

The application relates to the technical field of water conservancy gate, in particular to a gate opening and closing device for water conservancy construction, which comprises a power motor, the power output end of the power motor is connected with a gate opening and closing device, the lower side of the gate opening and closing device is rotationally connected with a sealing ring, a ball is arranged between the sealing ring and the gate opening and closing device, the ball is rotationally connected with the gate opening and closing device, the lower side of the sealing ring is slidably connected with a rotating ring, a first spring is arranged between the gate opening and closing device and the rotating ring; a screw rod is screwedly connected in the gate opening and closing device, the screw rod passes through the middle of the sealing ring and the rotating ring, a helical groove is formed in the screw rod, and the lower end of the screw rod is fixedly connected with a gate. When the device drives the screw rod and the gate to open and close through the gate opening and closing device, the rust in the helical groove of the screw rod can be scraped automatically, so that the normal operation of the gate is prevented from being affected.

Description

Technical Field

[0001] This invention relates to the field of gate technology for water conservancy projects, specifically to a gate for opening and closing in water conservancy construction. Background Technology

[0002] The gates used in water conservancy projects are core and critical equipment for controlling water levels and regulating water flow in water conservancy hubs. They are widely used in various water conservancy scenarios such as reservoirs, hydropower stations, ship locks, and irrigation canals. In recent years, with the continuous growth of investment in water conservancy infrastructure construction nationwide and the accelerated implementation of projects such as reservoir reinforcement, river management, and irrigation area renovation, market demand has continued to rise. Their development can be traced back to the simple wooden gates driven by human and animal power in ancient times. In modern times, they have gradually evolved into various mature power models such as screw type, winch type, and hydraulic type. Today, they are further integrated with intelligent technologies such as Internet of Things remote monitoring, becoming a core supporting facility for ensuring flood control safety, stable irrigation water supply, and supporting the efficient operation of water conservancy projects.

[0003] In the operation of existing equipment, when the gate is opened by the screw hoist, the rotation of the nut drives the screw to open the gate. Because the screw is exposed to a humid environment for a long time, the spiral groove of the screw rusts. As a result, when the screw is engaged with the nut, the rust on the screw is scraped off by the nut and gets stuck in the spiral groove, causing the screw to jam and seriously affecting the service life of the equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a gate for hydraulic engineering construction, to solve the problem mentioned in the background art where, during the use of the prior art, when the gate is opened by a screw-driven hoist, the rotation of the nut drives the screw to open the gate. However, because the screw is exposed to a humid environment for a long time, the spiral grooves of the screw rust. As a result, when the screw is engaged with the nut, the rust on the screw is scraped off by the nut and gets stuck in the spiral grooves, causing the screw to jam and seriously affecting the service life of the equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gate for water conservancy engineering construction, comprising a power motor, a gate hoist connected to the power output end of the power motor, a sealing ring rotatably connected to the lower side of the gate hoist, a ball bearing disposed between the sealing ring and the gate hoist, the ball bearing being rotatably connected to the gate hoist, a rotating ring slidably connected to the lower side of the sealing ring, and a first spring disposed between the gate hoist and the rotating ring; The gate hoist has an internal threaded connection to a screw rod that passes between the sealing ring and the rotating ring. The screw rod has a spiral groove, and a gate is fixedly connected to the lower end of the screw rod.

[0006] Furthermore, the rotating ring has a first sealing groove inside, the sealing ring is slidably connected to the first sealing groove, and the first sealing groove is filled with hydraulic oil.

[0007] Furthermore, a pipe is fixedly connected to the lower side of the first sealing groove, the pipe being opened inside the rotating ring, and a second sealing groove is fixedly connected to one end of the pipe, the second sealing groove being opened inside the rotating ring.

[0008] Furthermore, a sealing sliding arc block is slidably connected inside the second sealing groove, and a hard scraper is fixedly connected to one side of the sealing sliding arc block. The hard scraper is used to scrape off rust chips in the spiral wire groove.

[0009] Furthermore, the sealing sliding arc block has a channel inside, and one end of the channel is fixedly connected to a pair of sealing tubes, which are located inside the sealing sliding arc block.

[0010] Furthermore, a sealing rod is slidably connected inside each of the two sealing tubes, and a second spring is provided inside the sealing tube, which is sleeved on the sealing rod.

[0011] Furthermore, a sliding column is fixedly connected to one end of the sealing rod, and a scraping blade is provided at the end of the sealing rod. The scraping blade is used to scrape off rust chips on the inclined surface inside the spiral groove.

[0012] Furthermore, the scraper blade has a groove, one end of the sealing rod is slidably connected to the groove, and one side of the scraper blade has an inclined surface, which is used to guide the position of the scraper blade.

[0013] Furthermore, a control groove is provided on the side wall of the empty groove. The control groove is formed on the scraper, and the sliding column is slidably connected to the control groove. The control groove is used to limit the position of the sealing rod.

[0014] The technical solution provided by this invention has the following advantages compared with the known prior art: I. This invention utilizes a hard scraper to specifically scrape the vertical surface of the spiral thread groove, and a scraper blade to specifically scrape the inclined surface of the spiral thread groove, achieving synchronous and thorough coverage of both working surfaces of the thread groove. Simultaneously, the scraper blade, in coordination with the sliding groove and sliding column, can be finely adjusted according to the angle of the inclined surface to ensure a tight fit. This thoroughly removes rust and prevents it from mixing with the lubricating oil and forming an abrasive, thereby reducing abnormal wear on the screw and load-bearing nut from the root and ensuring the long-term operational accuracy of the hoist. Second, when the hard scraper or scraping blade wears out due to long-term friction and gaps are formed between it and the spiral groove, the sealing ring will continue to squeeze the hydraulic oil in the first sealing groove, automatically replenish the pressure oil to push the hard scraper and scraping blade to extend outward continuously, and always maintain close contact between the scraper and the groove wall. This self-compensation function significantly reduces cleaning failure caused by component wear, and greatly extends the replacement cycle of vulnerable parts and the overhaul interval of the whole machine. Third, the entire scraping and resetting process of this invention relies entirely on the mechanical energy of the screw lifting to drive the hydraulic system, without the need for an additional power source or complex electrical control, and the action logic is reliable; especially when the gate is closed, the negative pressure oil extraction and spring cooperation realize the reverse reset of first retracting the scraping blade and then retracting the sealing sliding arc block, effectively avoiding the hard scraping block and scraping blade scraping off the protective lubricating oil on the screw surface when the screw descends, thus ensuring both cleaning function and lubrication protection, and achieving a good working state of the whole cycle. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rotating ring structure of the present invention; Figure 3 This is a schematic diagram of the ball bearing structure of the present invention; Figure 4 This is a schematic cross-sectional view of the rotating ring structure of the present invention; Figure 5 This is a schematic diagram of the sealing sliding arc block structure of the present invention; Figure 6 This is a schematic cross-sectional view of the sealing sliding arc block of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a schematic diagram of the scraping blade moving structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B; Figure 10 This is a schematic diagram of the initial position structure of the scraping blade of the present invention.

[0017] In the diagram: 1. Power motor; 2. Hoist; 3. Sealing ring; 4. Ball bearing; 5. Rotating ring; 6. First spring; 7. Screw; 8. Helical groove; 9. First sealing groove; 10. Pipe; 11. Second sealing groove; 12. Sealing sliding arc block; 13. Hard scraper; 14. Channel; 15. Sealing pipe; 16. Sealing rod; 17. Second spring; 18. Sliding column; 19. Scraper; 20. Empty groove; 21. Inclined surface; 22. Control groove; 23. Gate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to embodiments.

[0020] Example: A gate for opening and closing in water conservancy engineering construction, such as... Figures 1-10 As shown, the device includes a power motor 1, the power output end of which is connected to a gate hoist 2. A sealing ring 3 is rotatably connected to the lower side of the gate hoist 2. A ball bearing 4 is provided between the sealing ring 3 and the gate hoist 2. The design of the ball bearing 4 can reduce the friction between the gate hoist 2 and the sealing ring 3, so that the sealing ring 3 can rotate normally. The ball bearing 4 is rotatably connected to the gate hoist 2. A rotating ring 5 is slidably connected to the lower side of the sealing ring 3. A first spring 6 is provided between the gate hoist 2 and the rotating ring 5. The gate hoist 2 has an internal threaded connection to a screw 7, which passes between the sealing ring 3 and the rotating ring 5. The screw 7 has a spiral groove 8, and a gate 23 is fixedly connected to its lower end. It should be noted that the gate hoist 2 is existing technology. It is driven by a power motor 1, causing the load-bearing nut inside the hoist 2 to rotate. Simultaneously, the rotation of the load-bearing nut drives the threaded screw 7 to move up and down, thereby opening and closing the gate 23. The gate hoist 2 also integrates a lubrication device, which is existing technology. The specific working principle will not be elaborated upon here; professionals in this field can freely select the device according to actual conditions. This device allows lubricating oil to be applied to the surface of the screw 7, ensuring that the spiral groove 8 lubricates the screw 7 before it engages with the load-bearing nut, preventing jamming. The lubricating oil also forms a protective film on the surface of the screw 7, reducing the degree of corrosion.

[0021] The rotating ring 5 has a first sealing groove 9 inside, and the sealing ring 3 is slidably connected to the first sealing groove 9. The first sealing groove 9 is filled with hydraulic oil. Figure 3 When the sealing ring 3 slides down, it will squeeze the hydraulic oil in the first sealing groove 9, causing the hydraulic oil in the first sealing groove 9 to be under pressure.

[0022] The lower side of the first sealing groove 9 is fixedly connected to a pipe 10, which is located inside the rotating ring 5. One end of the pipe 10 is fixedly connected to a second sealing groove 11, which is located inside the rotating ring 5. When the sealing ring 3 slides down, it will squeeze the hydraulic oil in the first sealing groove 9 into the pipe 10, and then enter the second sealing groove 11 through the pipe 10.

[0023] A sealing sliding arc block 12 is slidably connected inside the second sealing groove 11. A hard scraper block 13 is fixedly connected to one side of the sealing sliding arc block 12. The hard scraper block 13 is used to scrape off rust chips in the spiral thread groove 8. With this design, when the hydraulic oil enters the second sealing groove 11, it will drive the sealing sliding arc block 12, so that the sealing sliding arc block 12 can drive the hard scraper block 13 to approach the screw 7, so that the hard scraper block 13 can contact the inside of the spiral thread groove 8. It should be noted that the sealing sliding arc block 12 has a certain arc shape, which is consistent with the arc of the spiral thread groove 8. With this design, it can prevent the sealing sliding arc block 12 and the hard scraper block 13 from getting stuck when sliding in the spiral thread groove 8.

[0024] The sealing sliding arc block 12 has a channel 14 inside, and a pair of sealing tubes 15 are fixedly connected to one end of the channel 14. Through the design of the channel 14, hydraulic oil can enter the sealing tubes 15, which are located inside the sealing sliding arc block 12.

[0025] Both sealing tubes 15 have a sealing rod 16 slidably connected inside. A second spring 17 is installed inside the sealing tube 15 and is sleeved on the sealing rod 16. With this design, when hydraulic oil enters the sealing tube 15, it can drive the sealing rod 16. While the sealing rod 16 slides inside the sealing tube 15, it can squeeze the second spring 17, providing power for the subsequent reset of the sealing rod 16.

[0026] One end of the sealing rod 16 is fixedly connected to a sliding column 18, and the end of the sealing rod 16 is provided with a scraper 19, which is used to scrape off rust chips on the inclined surface inside the spiral wire groove 8.

[0027] The scraper blade 19 has a groove 20, one end of the sealing rod 16 is slidably connected to the groove 20, and one side of the scraper blade 19 has an inclined surface 21, which is used to guide the position of the scraper blade 19.

[0028] A control groove 22 is provided on the side wall of the empty groove 20. The control groove 22 is opened on the scraper 19. The sliding column 18 is slidably connected to the control groove 22. The control groove 22 is used to limit the position of the sealing rod 16. Through the design of the control groove 22, the position of the sliding column 18 and the sealing rod 16 can be limited, which can prevent the position from shifting during the subsequent sliding process.

[0029] When it is necessary to open the gate 23, the power motor 1 is started, which drives the load-bearing nut inside the hoist 2 to rotate. While rotating, the load-bearing nut, in conjunction with the spiral groove 8, drives the screw 7 and the gate 23 to move upwards. As the screw 7 and the gate 23 move upwards, [the following text is incomplete and likely refers to a different process:] ... Figure 4 The inclined surface of the spiral groove 8 will abut against the sealing sliding arc block 12 and the hard scraper block 13, thereby driving the sealing sliding arc block 12 to move upward together. While the sealing sliding arc block 12 moves upward, it can drive the rotating ring 5 to move upward together. While the rotating ring 5 moves upward, it will cause the sealing ring 3 to slide in the first sealing groove 9, and at the same time, it will cause the first spring 6 to deform. It should be noted that the power motor 1 and the gate opener 2 will be installed in a fixed position.

[0030] When the sealing ring 3 slides within the first sealing groove 9, it compresses the hydraulic oil within the first sealing groove 9, allowing the hydraulic oil to enter the second sealing groove 11 through the pipe 10. After entering the second sealing groove 11, the hydraulic oil drives the sealing sliding arc block 12 to move. The sealing sliding arc block 12 then moves the hard scraper block 13 together, allowing it to contact the spiral wire groove 8, preparing for subsequent rust removal. It should be noted that when the hydraulic oil first enters the second sealing groove 11 and pushes the sealing sliding arc block 12 to slide, see... Figure 10 At this time, one side of the scraper 19 is in contact with the rotating ring 5, so that the hydraulic oil cannot enter the sealing tube 15 to push the sealing rod 16. After the scraper 19 slides out of the rotating ring 5, the sealing ring 3 will continue to slide in the first sealing groove 9, and the hydraulic oil will continue to flow into the second sealing groove 11 through the pipe 10, so that the hydraulic oil can enter the sealing tube 15 through the channel 14, thereby driving the sealing rod 16 to slide in the sealing tube 15, so that the sealing rod 16 pushes the scraper 19 on the upper and lower sides to move. When the sealing rod 16 pushes the scraper 19 to move, one end of the sealing rod 16 will move within the empty groove 20. At the same time, the sealing rod 16 will drive the sliding column 18 to slide within the control groove 22. Figure 9When the sealing rod 16 pushes the scraper 19 to contact the inclined surface of the spiral thread groove 8, the sliding column 18 will be at the left end of the control groove 22. When the sealing rod 16 pushes the scraper 19 up, the sealing sliding arc block 12 will be in contact with the straight surface of the spiral thread groove 8. The scraper 19 will slide to the right under the restriction of the spiral thread groove 8, so that the sliding column 18 slides in the control groove 22. With this design, when the scraper 19 needs to be finely adjusted when it contacts the inclined surface of the spiral thread groove 8, the scraper 19 can make a tighter contact with the inclined surface of the spiral thread groove 8. At the same time, the scraper 19 can cover the entire inclined surface of the spiral thread groove 8, preparing for subsequent scraping of rust chips.

[0031] As the sealing rod 16 pushes the scraper 19 to move, the sealing sliding arc block 12 has already driven the scraper 19 to slide into the spiral thread groove 8. When the sealing rod 16 pushes the scraper 19 to move, it will push one side of the scraper 19 to contact the inclined surface of the spiral thread groove 8. The restriction of the spiral thread groove 8 can prevent the scraper 19 from shifting position. At the same time, the sealing sliding arc block 12 will continue to drive the scraper 19 to slide into the spiral thread groove 8. Figure 8 When the scraper blade 19 is in complete contact with the inclined surface of the spiral groove 8, the hard scraper block 13 is also in contact with the vertical part of the spiral groove 8. With this design, the rust in the spiral groove 8 can be completely scraped off with the cooperation of the scraper blade 19 and the hard scraper block 13. This can prevent the rust from falling off and mixing with the lubricating oil when applying lubricating oil to the screw 7 later, which would form an abrasive and increase the wear between the screw 7 and the load-bearing nut. When the hard scraper 13 contacts the screw 7, the sealing ring 3 can no longer squeeze the hydraulic oil in the first sealing groove 9. At this time, driven by the power motor 1, the screw 7 will continue to drive the gate 23 to move upward. During the upward movement of the screw 7, it will drive the spiral groove 8 to move together. During the upward movement of the spiral groove 8, it will guide the sealing sliding arc block 12, the hard scraper 13, and the scraper 19. Through this design, the screw 7 and the spiral groove 8, during the upward sliding process, guide the sealing sliding arc block 12, the hard scraper 13, and the scraper 19. The block 13 and scraper 19 are driven to slide the sealing sliding arc block 12, the hard scraper block 13, and the scraper 19 within the spiral thread groove 8. The sliding of the hard scraper block 13 and scraper 19 drives the rotating ring 5 to rotate together, allowing the rotating ring 5 to rotate around the screw 7. This allows the hard scraper block 13 and scraper 19 to simultaneously scrape both the straight and inclined surfaces within the spiral thread groove 8, removing rust and debris, thus facilitating subsequent mating with the load-bearing nut. It should be noted that... (See...) Figure 6The surface of the sealing ring 3 is provided with a soft sealing gasket, so that the sealing ring 3 and the rotating ring 5 form a sealed design. When the rotating ring 5 rotates, the sealing ring 3 and the rotating ring 5 may be rotated and connected, but this does not affect the seal between the two. During the subsequent scraping process, when the sealing sliding arc block 12 or scraper 19 is worn due to friction, a gap will appear between the sealing sliding arc block 12 or scraper 19 and the spiral thread groove 8. This will cause the sealing ring 3 to continue sliding in the first sealing groove 9 when the screw 7 and the spiral thread groove 8 slide upwards, causing the hydraulic oil to continue to enter the second sealing groove 11 through the pipe 10. Subsequently, it will continue to push the hard scraper block 13 or scraper 19 to contact the spiral thread groove 8, so that the hard scraper block 13 and scraper 19 can fit tightly against the spiral thread groove 8, further improving the scraping effect of the hard scraper block 13 and scraper 19 on the rust on the screw 7. It should be noted that when the sealing sliding arc block 12 contacts the vertical part of the spiral groove 8, the minimum sliding distance of the sealing sliding arc block 12 is sufficient for the scraper 19 to slide out from the rotating ring 5, so as to prevent the scraper 19 from getting stuck.

[0032] When the gate 23 needs to be closed, the power motor 1 is started, causing the load-bearing nut to reverse. This allows the screw 7 to slide the gate 23 downwards. As the screw 7 slides downwards, the sealing sliding block 12 slides downwards along with it. At this time, the rotating ring 5, under the action of the first spring 6, experiences a downward pushing force, preventing it from reversing due to the interaction between the sealing sliding block 12 and the spiral groove 8. During the downward sliding process, the sealing... The sealing ring 3 slides within the first sealing groove 9, creating a negative pressure within the first sealing groove 9. This negative pressure draws the hydraulic oil from the second sealing groove 11 back into the first sealing groove 9 through the pipe 10. As the hydraulic oil in the second sealing groove 11 decreases, the sealing rod 16 slides back rapidly under the action of the second spring 17, allowing the scraper 19 to reset. During this reset process, the scraper 19 may come into contact with the sealing sliding block 12. The inclined surface 21 at the end of the scraper 19 will first contact the sealing sliding block 12. The wall surface of the moving arc block 12 contacts the inclined surface 21, which is subjected to the reverse force of the sealing sliding arc block 12. This reverse force guides the scraper 19, allowing it to fully retract into the groove on the sealing sliding arc block 12. This design prevents the scraper 19 from getting stuck when the sealing sliding arc block 12 slides into the second sealing groove 11. After the scraper 19 completes its reset, the sealing ring 3 continues to slide within the first sealing groove 9, allowing the hydraulic oil in the second sealing groove 11 to continue flowing into the first sealing groove 9. The movement allows the sealing sliding arc block 12 to retract into the second sealing groove 11. When the sealing ring 3 slides to the upper end of the first sealing groove 9, the sealing sliding arc block 12 has completed its reset. This design prevents the hard scraper block 13 and scraper blade 19 from scraping off the lubricating oil in the spiral thread groove 8 when the screw 7 and gate 23 are reset. At the same time, when the screw 7 slides down, it will abut against the upper side of the sealing sliding arc block 12. At this time, only one corner of the sealing sliding arc block 12 contacts the spiral thread groove 8, which has no effect on the overall lubricating oil.

[0033] In this embodiment: when the gate 23 opens and the screw 7 rises, the spiral groove 8 of the screw 7 pushes the sealing sliding arc block 12 upward, causing the rotating ring 5 to compress the first spring 6, and at the same time causing the sealing ring 3 to squeeze the hydraulic oil in the first sealing groove 9; the hydraulic oil enters the second sealing groove 11 and the sealing pipe 15 through the pipe 10, pushing out the hard scraper 13 to abut against the vertical surface of the spiral groove 8, and at the same time driving the scraper blade 19 to extend, and adaptively adhering to the spiral inclined surface 21 under the cooperation of the control slide 22 and the sliding column 18, ensuring no dead angle coverage; subsequently, the screw 7 continues to rise, and the spiral groove 8 generates a spiral guiding force on the already adhered scraping component, causing the sealing sliding arc block 12, the hard scraper 13 and the scraper blade 19 to rotate and slide along the path of the spiral groove 8, simultaneously scraping the vertical surface and inclined surface of the spiral groove 8, thoroughly removing rust, and when the scraper has gaps due to wear, the hydraulic system will automatically replenish the pressure to push the component to extend, realizing wear Self-compensation ensures long-term high-efficiency scraping, preventing rust from mixing into the lubricating oil and forming an abrasive, significantly reducing abnormal wear on the screw 7 and the load-bearing nut. When the gate 23 is closed and the screw 7 moves downward, the first spring 6 pushes the rotating ring 5 downward, and the sealing ring 3 slides upward, creating negative pressure in the first sealing groove 9, drawing back the hydraulic oil. This, combined with the second spring 17, allows the scraper 19 to smoothly retract into the groove of the sealing sliding arc block 12 under the guidance of the inclined surface 21. Subsequently, the sealing sliding arc block 12 retracts into the second sealing groove 11. The entire reset process is orderly and anti-jamming, preventing the hard scraper and scraper from scraping off the protective lubricating oil during descent. This solution integrates power sharing, sequential control, adaptive fitting, wear compensation, and anti-interference reset into one system. Without the need for an additional power source, it achieves efficient cleaning and reliable protection of the screw 7 and the spiral groove 8, significantly improving the smoothness of operation, fitting accuracy, and service life of the hydraulic gate hoist 2 under harsh working conditions.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gate for opening and closing in water conservancy engineering construction, comprising a power motor (1), wherein the power output end of the power motor (1) is connected to a gate opener (2), characterized in that: A sealing ring (3) is rotatably connected to the lower side of the gate hoist (2), a ball (4) is provided between the sealing ring (3) and the gate hoist (2), the ball (4) is rotatably connected to the gate hoist (2), a rotating ring (5) is slidably connected to the lower side of the sealing ring (3), and a first spring (6) is provided between the gate hoist (2) and the rotating ring (5). The gate hoist (2) has an internal threaded connection to a screw (7), which passes through the middle of the sealing ring (3) and the rotating ring (5). The screw (7) has a spiral groove (8), and the lower end of the screw (7) is fixedly connected to a gate (23).

2. The gate for opening and closing in water conservancy projects according to claim 1, characterized in that: The rotating ring (5) has a first sealing groove (9) inside, and the sealing ring (3) is slidably connected to the first sealing groove (9). The first sealing groove (9) is filled with hydraulic oil.

3. A gate for opening and closing in water conservancy projects according to claim 2, characterized in that: The lower side of the first sealing groove (9) is fixedly connected to a pipe (10), the pipe (10) is opened inside the rotating ring (5), and one end of the pipe (10) is fixedly connected to a second sealing groove (11), the second sealing groove (11) is opened inside the rotating ring (5).

4. A gate for opening and closing in water conservancy projects according to claim 3, characterized in that: The second sealing groove (11) is slidably connected to a sealing sliding arc block (12), and a hard scraper (13) is fixedly connected to one side of the sealing sliding arc block (12). The hard scraper (13) is used to scrape off the rust in the spiral wire groove (8).

5. A gate for opening and closing in water conservancy projects according to claim 4, characterized in that: The sealing sliding arc block (12) has a channel (14) inside, and one end of the channel (14) is fixedly connected to a pair of sealing tubes (15). The sealing tubes (15) are opened inside the sealing sliding arc block (12).

6. A gate for opening and closing in water conservancy projects according to claim 5, characterized in that: Both sealing tubes (15) are slidably connected to a sealing rod (16), and a second spring (17) is provided inside the sealing tube (15), which is sleeved on the sealing rod (16).

7. A gate for opening and closing in water conservancy projects according to claim 6, characterized in that: One end of the sealing rod (16) is fixedly connected to a sliding column (18), and the end of the sealing rod (16) is provided with a scraper (19), which is used to scrape off rust chips on the inclined surface inside the spiral groove (8).

8. A gate for opening and closing in water conservancy projects according to claim 7, characterized in that: The scraper (19) has a slot (20) and one end of the sealing rod (16) is slidably connected to the slot (20). A slope (21) is provided on one side of the scraper (19) and the slope (21) is used to guide the position of the scraper (19).

9. A gate for opening and closing in water conservancy projects according to claim 8, characterized in that: A control groove (22) is provided on the side wall of the empty groove (20). The control groove (22) is opened on the scraper (19). The sliding column (18) is slidably connected to the control groove (22). The control groove (22) is used to limit the position of the sealing rod (16).

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