Lifting type water conservancy gate

Abstract

The utility model relates to the field of water conservancy gate discloses a water conservancy engineering is with lifting type water conservancy gate, including gate frame, the upper surface pivot of gate frame fixedly installs and lifts the cylinder, the output of lift cylinder fixedly installs the gate board, the left and right surfaces of gate board all are fixedly connected with two groups of slide strip, the left and right surfaces of gate frame inner wall all are set up with the slide groove, the left and right surfaces of gate frame all are provided with sealed protection subassembly, the front surface of gate board is provided with auxiliary assembly. In the utility model, through the mutual cooperation of air compressor, inflatable rubber sealing element, gyro wheel roller and other spare parts in the equipment, sealed protection subassembly adapts different gap sizes, and the sealing effect is better than traditional rigid sealing, the equipment can convert sliding friction into rolling friction, greatly reduces the gate board lifting resistance and component wear and tear, realizes multidirectional orientation support, avoids the gate board deviation and jam, and guarantees the long-term stable operation of gate.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy gates, and in particular to a lifting water conservancy gate for water conservancy projects. Background Technology

[0002] In water conservancy projects, lift-type water gates are core equipment for controlling water flow, regulating water levels, and ensuring the safe operation of water conservancy facilities. They are widely used in rivers, reservoirs, pumping stations, and other scenarios. As water conservancy projects increasingly demand higher levels of stability, sealing reliability, and ease of maintenance for gate operation...

[0003] The aforementioned devices have the following drawbacks: Existing gates mostly use a single rubber waterstop as a sealing component, which is fixedly installed on the gate frame or gate plate. It relies solely on its own elasticity and the contact surface to form a seal. After long-term use, the waterstop is prone to aging and deformation, or the sealing performance may decline due to assembly gaps between the gate frame and the gate plate, or wear during operation, resulting in water leakage. This not only affects the gate's water-blocking effect but may also cause the leaking water to erode the gate's foundation structure, shortening the equipment's service life. Traditional gates mostly rely on sliding guide rails for guidance, with the gate plate sliding and engaging with the guide rails to achieve lifting and lowering. The sliding friction resistance is high, and the gate plate is prone to jamming due to silt accumulation and component wear. Although some gates have attempted to add rolling guide components, the guide components and the sealing structure are independent of each other and cannot work together, still resulting in poor guiding stability and mutual interference between sealing and guiding, increasing the risk of gate malfunction. Therefore, a lifting hydraulic gate for water conservancy projects is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a lifting hydraulic gate for water conservancy projects, which aims to improve the problems of poor sealing reliability and insufficient guiding stability of traditional gates in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lifting hydraulic gate for water conservancy projects, comprising a gate frame, a lifting cylinder fixedly installed at the center of the upper surface of the gate frame, a gate plate fixedly installed at the output end of the lifting cylinder, two sets of sliding strips fixedly connected to the left and right surfaces of the gate plate, sliding grooves opened on the left and right surfaces of the inner wall of the gate frame, sealing and protective components provided on the left and right surfaces of the gate frame, and auxiliary components provided on the front surface of the gate plate. The sealing and protective components include a pneumatic compressor, an air collecting valve detachably connected to the output end of the pneumatic compressor via an air supply pipe, an inflatable rubber seal connected to the output end of the air collecting valve via a pipe, multiple sets of mounting seats fixedly installed on the inner side of the inflatable rubber seal, ball bearings rolledly connected to the upper surface of the mounting seats, and a wear-resistant layer provided on the right surface of the inflatable rubber seal.

[0006] As a further description of the above technical solution: the auxiliary component includes an auxiliary waste rack, the lower surface of which is provided with a plurality of evenly distributed drainage holes, the bottom ends of the left and right surfaces of the auxiliary waste rack are provided with a plurality of auxiliary through holes, the top of the rear surface of the auxiliary waste rack is fixedly connected to an auxiliary seat, and an auxiliary bolt is detachably connected to the inner wall groove of the auxiliary seat.

[0007] As a further description of the above technical solution: the sealing and protection assembly also includes a fixing plate, which is fixedly installed on the rear side of the inner wall of the gate frame near the slide groove, and multiple sets of rollers are rotatably connected to the right surface of the fixing plate.

[0008] As a further description of the above technical solution: the outer wall of the roller is in contact with the rear surface of the gate.

[0009] As a further description of the above technical solution: the outer wall of the ball is in contact with the front and rear surfaces of the slide bar.

[0010] As a further description of the above technical solution: the inflatable rubber seal is embedded in the inner wall of the groove.

[0011] As a further description of the above technical solution: the air compressor is fixedly installed on the left end of the upper surface of the gate frame.

[0012] As a further description of the above technical solution: the auxiliary waste rack is fixedly installed on the front surface of the gate by auxiliary bolts.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the air compressor, inflatable rubber seal, roller and other components in the equipment cooperate with each other through the connection relationship, so that the sealing and protection components can be adapted to different gap sizes. The sealing effect is better than that of traditional rigid seals. In addition, the ball on the inner mounting seat of the seal and the roller on the fixing plate of the inner wall of the gate frame can convert sliding friction into rolling friction, which greatly reduces the resistance of gate lifting and lowering and component wear, realizes multi-directional guiding support, avoids gate offset and jamming, and ensures long-term stable operation of the gate.

[0015] 2. In this utility model, by utilizing the interconnections between the auxiliary waste rack, auxiliary seat, gate, and other components in the equipment, the device can actively intercept floating objects and silt at different water levels, preventing waste from accumulating at the bottom of the gate or entering the chute. The drainage hole and auxiliary through hole work together to reduce the weight of the waste rack and the load on the gate, facilitating later cleaning and maintenance, reducing equipment downtime and maintenance time and costs, and improving the operating efficiency of water conservancy projects. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the main body of a lifting hydraulic gate for water conservancy projects proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the main body of a lifting hydraulic gate for water conservancy projects proposed in this utility model.

[0018] Figure 3 An exploded view of a partial area of ​​the sealing and protection component of a lifting hydraulic gate for water conservancy projects proposed in this utility model;

[0019] Figure 4 This utility model proposes a lifting hydraulic gate for water conservancy projects. Figure 4 Enlarged diagram of region A;

[0020] Figure 5 This is a partial schematic diagram of the auxiliary waste rack for a lifting hydraulic gate used in water conservancy projects, as proposed in this utility model.

[0021] Legend:

[0022] 1. Gate frame; 11. Slide groove; 2. Lifting cylinder; 3. Gate plate; 31. Slide bar; 4. Sealing and protection components; 41. Air compressor; 42. Air supply pipe; 43. Air collecting valve; 44. Inflatable rubber seal; 45. Wear-resistant layer; 46. Mounting base; 47. Ball bearing; 48. Fixing plate; 49. Roller; 5. Auxiliary components; 51. Auxiliary waste rack; 52. Drainage hole; 53. Auxiliary seat; 54. Auxiliary bolt; 55. Auxiliary through hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 - Figure 3This utility model provides an embodiment of a lifting hydraulic gate for water conservancy projects, including a gate frame 1. The gate frame 1 provides installation reference and structural support for core components such as the gate plate 3, lifting cylinder 2, and sealing and protection components 4. Simultaneously, its frame structure limits the lifting stroke of the gate plate 3, ensuring the overall assembly accuracy and operational stability of the gate, and guaranteeing the structural strength of the gate under water flow impact and water pressure. A lifting cylinder 2 is fixedly installed at the axial center of the upper surface of the gate frame 1. The lifting cylinder 2 drives the gate plate 3 to move up and down along the slide groove 11 through the linear reciprocating motion of its output end, realizing the lifting stroke of the gate plate 3. The gate's opening and closing actions; its axial installation position design ensures balanced force on the gate plate 3, preventing jamming due to force offset during lifting. Simultaneously, the opening and closing degree of the gate can be precisely adjusted by controlling the extension and retraction speed and stroke of the lifting cylinder 2, adapting to the flow control requirements under different hydraulic conditions. The gate plate 3 is fixedly installed at the output end of the lifting cylinder 2. The gate plate 3 achieves vertical displacement through the lifting cylinder 2. When closed, it blocks water flow through its own structural strength and the cooperation of the sealing and protection components 4; when open, it forms a flow channel. The sliding strips 31 connected to its left and right surfaces are connected to the sliding grooves 11 of the gate frame 1. The gate 3 is adapted to ensure stable lifting and lowering trajectory. The material and thickness of the gate 3 must meet the requirements for water pressure resistance and deformation resistance under the corresponding water head. It is the core carrier for realizing the gate's water-blocking function. Two sets of sliding strips 31 are fixedly connected to the left and right surfaces of the gate 3. The sliding strips 31, on the one hand, limit the lifting and lowering direction of the gate 3, preventing lateral deviation or tilting during water flow impact or lifting, ensuring accurate movement trajectory; on the other hand, the sliding strips 31 directly contact the ball bearings 47 and the inflatable rubber seals 44 in the sliding groove 11, reducing the contact between the gate 3 and the seals through their guiding action. The friction loss is reduced, and the auxiliary sealing and protection component 4 is used to achieve a sealing effect. The left and right surfaces of the inner wall of the gate frame 1 are provided with sliding grooves 11. The sliding grooves 11 provide a stable movement space for the gate plate 3 to rise and fall. The groove size is adapted to the sliding strip 31. At the same time, the inner wall of the groove is embedded with an inflatable rubber seal 44, so that the sliding groove 11 has both guiding and sealing functions. It not only ensures the smooth rise and fall of the gate plate 3, but also blocks the water flow channel between the sliding groove 11 and the outside through the filling of the seal, preventing water leakage. The left and right surfaces of the gate frame 1 are provided with sealing and protection components 4, and the front surface of the gate plate 3 is provided with auxiliary components 5.

[0025] Reference Figure 2 - Figure 4The sealing and protective component 4 includes a pneumatic compressor 41, which is fixedly installed on the left end of the upper surface of the gate frame 1. The pneumatic compressor 41 outputs compressed air and delivers it to the air collecting valve 43 via the air supply pipe 42, providing air pressure support for the expansion of the inflatable rubber seal 44. The output air pressure can be adjusted according to the opening and closing status of the gate and the sealing requirements to achieve controllable pressure of the inflatable rubber seal 44, ensuring the sealing effect while avoiding damage to the seal due to excessive expansion. The output end of the pneumatic compressor 41 is detachably connected to the air collecting valve 43 via the air supply pipe 42. The air collecting valve 43 serves as a pressure distribution and control node. On the one hand, it evenly distributes the compressed air transmitted by the air supply pipe 42 to each air chamber of the inflatable rubber seal 44, ensuring uniform expansion of the seal. On the other hand, it has a one-way valve or pressure regulation function to prevent the compressed air in the inflatable rubber seal 44 from flowing back, maintain stable sealing pressure, and release pressure when necessary. Air can be released through the air collection valve 43 to facilitate the lifting and lowering operation of the gate 3. The output pipe of the air collection valve 43 is connected to an inflatable rubber seal 44, which is embedded in the inner wall of the slide groove 11. After being inflated by the air compressor 41, the inflatable rubber seal 44 expands and tightly fits the slide bar 31 and the inner wall of the slide groove 11, filling the gap between them and blocking the water leakage channel. Its rubber material has good elasticity and water resistance, which can adapt to the lifting and lowering movement of the slide bar 31. At the same time, the inflatable structure can be adapted to different gap sizes by adjusting the air pressure, avoiding the problems of easy wear and poor sealing effect of traditional rigid seals. The mounting seat 46 installed inside the seal is integrated with the ball 47, so that the seal has both sealing and auxiliary guiding functions. Multiple sets of mounting seats 46 are fixedly installed inside the inflatable rubber seal 44. Through multiple sets of evenly distributed mounting seats 46, the ball 47 is ensured to form a stable rolling support array inside the seal.Its structural strength must meet the stability requirements of the ball bearing 47 under the lateral pressure of the gate 3, preventing the ball bearing 47 from shifting or falling off. The mounting base 46 and the inflatable rubber seal 44 have a certain elasticity to adapt to the slight deformation when the seal expands, ensuring that the ball bearing 47 is always in contact with the slide bar 31. The upper surface of the mounting base 46 is rolled with the ball bearing 47, and the outer wall of the ball bearing 47 is in contact with the front and rear surfaces of the slide bar 31. The ball bearing 47 converts the sliding friction between the slide bar 31 and the inflatable rubber seal 44 into rolling friction, greatly reducing the frictional resistance when the gate 3 rises and falls, and reducing the friction between the slide bar 31 and the inflatable rubber seal 44. The wear of the seal is mitigated by the even distribution of multiple sets of balls 47, which provide multi-point support and help the slide bar 31 maintain its vertical lifting trajectory. This prevents the gate 3 from jamming due to excessive friction on one side. The wear-resistant material of the balls 47 is stainless steel, ensuring long-term reliability. A wear-resistant layer 45 is provided on the right surface of the pneumatic rubber seal 44. This layer, made of a high-performance wear-resistant material such as wear-resistant rubber, directly contacts the slide bar 31 or the inner wall of the slide groove 11, reducing wear caused by friction during the lifting and lowering of the gate 3 and extending the seal's service life. The wear-resistant layer 45 also... The surface smoothness design of 5 further reduces frictional resistance, ensuring smooth lifting and lowering of the gate plate 3. The sealing and protection component 4 also includes a fixing plate 48, which is fixedly installed on the rear side of the inner wall of the gate frame 1 near the slide groove 11. The fixing plate 48 serves as the mounting support structure for the roller 49, providing a stable mounting reference for the roller 49 through its own rigid fixation. Its installation position and size design must ensure that the roller 49 accurately corresponds to the rear surface of the gate plate 3. At the same time, the connection strength between the fixing plate 48 and the gate frame 1 must meet the structural stability under water flow impact, avoiding positional changes of the roller 49 due to loose support. The right surface of the fixed plate 48 is rotatably connected to multiple sets of rollers 49. The outer wall of the rollers 49 contacts the rear surface of the gate plate 3. On one hand, the rollers 49 assist the gate plate 3 in vertical movement through rolling friction, further reducing the movement resistance of the gate plate 3 and forming multi-directional guiding support with the balls 47 at the slide bar 31. On the other hand, the lateral support of the rollers 49 restricts the gate plate 3's forward and backward displacement under water flow impact, preventing direct contact and wear between the rear surface of the gate plate 3 and the gate frame 1. Simultaneously, the cylindrical structure design of the rollers 49 adapts to the lifting trajectory of the gate plate 3, ensuring stable contact.

[0026] Reference Figure 1 , Figure 2 and Figure 5The auxiliary component 5 includes an auxiliary waste rack 51, which is fixedly installed on the front surface of the gate plate 3 by auxiliary bolts 54. The auxiliary waste rack 51 forms an upward-opening waste collection chamber for accommodating floating debris, silt, and other waste in the water flow. Its frame structure design must balance strength and flowability, ensuring that it does not deform under the impact of water flow while allowing water to pass through normally through a perforated or grid structure. Simultaneously, it moves synchronously with the rise and fall of the gate plate 3, actively intercepting water at different levels during the opening and closing of the gate. To prevent waste from accumulating at the bottom of the gate, the lower surface of the auxiliary waste rack 51 has multiple sets of evenly distributed drainage holes 52. These drainage holes 52 drain water carried in the waste collected by the auxiliary waste rack 51, achieving "water-material separation," reducing the weight of the waste, and preventing the auxiliary waste rack 51 from becoming loose due to excessive water accumulation or additional load on the gate 3. Simultaneously, the diameter of the drainage holes 52 must be smaller than the size of common waste materials to prevent waste from leaking out and ensure effective collection. Multiple sets of auxiliary through holes 55 are opened at the bottom of the left and right surfaces. The auxiliary through holes 55 serve as supplementary channels for auxiliary drainage and waste cleaning, which can accelerate the drainage of water accumulated in the auxiliary waste rack 51 and form a synergistic drainage effect with the drainage holes 52. An auxiliary seat 53 is fixedly connected to the top of the rear surface of the auxiliary waste rack 51. The auxiliary seat 53 serves as a transition structure for connecting the auxiliary waste rack 51 and the gate plate 3. The design of the auxiliary seat 53 can increase the connection area between the auxiliary waste rack 51 and the gate plate 3, improve the installation stability, and the groove structure of the auxiliary seat 53 can position and protect the auxiliary bolts 54, preventing the bolts from loosening or corroding due to water flow impact and mud and sand abrasion. The auxiliary bolts 54 are detachably connected in the groove of the inner wall of the auxiliary seat 53. The auxiliary bolts 54 serve as fixed connecting parts between the auxiliary waste rack 51 and the gate plate 3. Their thread specifications and materials are made of rust-proof stainless steel to ensure connection strength and corrosion resistance. At the same time, the detachable design facilitates the later disassembly, cleaning, maintenance or replacement of the auxiliary waste rack 51, reducing maintenance costs.

[0027] Working principle:

[0028] When the equipment is in its initial state, the gate 3 can be in the closed or open position according to the needs of the water conservancy project. When it is necessary to adjust the opening and closing state of the gate, first check the status of each component: the gate frame 1 must be firmly connected to the water conservancy facilities such as the gate pier to ensure stable support for the lifting cylinder 2, the gate 3, and the sealing and protection components 4. The slide bar 31 must be precisely matched with the slide groove 11 on the inner wall of the gate frame 1 without jamming or offset. The air compressor 41, air supply pipe 42, and air collection valve 43 in the sealing and protection components 4 must keep the air passage unobstructed. The inflatable rubber seal 44 must be undamaged. In the auxiliary components 5, the auxiliary waste rack 51 is firmly connected to the front surface of the gate 3 by the auxiliary bolt 54 and the auxiliary seat 53. The drainage hole 52 and the auxiliary through hole 55 must be unblocked.

[0029] When the lifting cylinder 2 is activated, its output end generates linear reciprocating motion. Because the lifting cylinder 2 is fixed at the axis on the upper surface of the gate frame 1, it ensures that the driving force acts vertically on the gate plate 3, preventing the gate plate 3 from shifting due to force. When the gate needs to be closed, the lifting cylinder 2 drives the gate plate 3 to move downward along the slide groove 11. When the gate needs to be opened, the lifting cylinder 2 drives the gate plate 3 to move upward along the slide groove 11. The opening and closing degree of the gate can be precisely controlled by adjusting the extension and retraction speed and stroke of the lifting cylinder 2 to adapt to different flow requirements. The sliding strips 31 on the left and right surfaces of the gate plate 3 are embedded in the slide groove 11 and rise synchronously with the gate plate 3. The gate 3 is lowered, limiting its movement to the vertical direction to prevent lateral deviation or tilting. At the same time, the ball bearings 47 on the inner mounting seat 46 of the inflatable rubber seal 44 in the sealing and protection assembly 4 contact the front and rear surfaces of the slide bar 31, converting the sliding friction between the slide bar 31 and the seal into rolling friction, reducing the lifting resistance. The rollers 49 on the rear fixing plate 48 on the inner wall of the gate frame 1 contact the rear surface of the gate 3, assisting the gate 3 in vertical lifting and lowering on the one hand, and restricting the gate 3 from shifting forward and backward on the other hand, forming a multi-directional guiding support with the ball bearings 47 to ensure smooth and stable lifting of the gate 3.

[0030] When the gate 3 moves to the closed position or when enhanced sealing performance is required, the air compressor 41 in the sealing protection assembly 4 is activated. The air compressor 41 outputs compressed air, which is delivered to the air collecting valve 43 via the air supply pipe 42. The air collecting valve 43 evenly distributes the compressed air to each air chamber of the inflatable rubber seal 44, causing the inflatable rubber seal 44 to expand on the inner wall of the slide groove 11. After expansion, the inflatable rubber seal 44 tightly fits the slide bar 31 and the inner wall of the slide groove 11, filling the gap between them and blocking the water leakage channel. The air collecting valve 43 also has a one-way valve function, which can prevent compressed air backflow and maintain stable sealing pressure. When the gate 3 needs to be raised or lowered again, the pressure is released through the air collecting valve 43, causing the inflatable rubber seal 44 to contract and avoid obstructing the movement of the gate 3. At the same time, the wear-resistant layer 45 on the right surface of the inflatable rubber seal 44 contacts the slide bar 31, reducing seal wear and extending service life.

[0031] During the lifting and lowering of the gate plate 3 and the operation of the gate, the auxiliary component 5 works synchronously. The auxiliary waste rack 51 moves with the gate plate 3. Its upward-opening collection chamber can intercept floating objects, mud and sand and other waste in the water flow, preventing waste from accumulating at the bottom of the gate or entering the chute 11 and causing jamming. The water carried in the collected waste is discharged through the drainage hole 52 on the lower surface of the auxiliary waste rack 51, realizing "water-material separation", reducing the weight of the auxiliary waste rack 51 and avoiding extra load on the gate plate 3. The auxiliary through holes 55 at the bottom of the left and right surfaces of the auxiliary waste rack 51 can accelerate the discharge of accumulated water, forming a synergistic drainage effect with the drainage hole 52. When it is necessary to clean the waste, the auxiliary bolt 54 can be removed, the auxiliary waste rack 51 can be removed from the gate plate 3, and the waste can be cleaned through the auxiliary through hole 55 or directly poured out. After cleaning, the auxiliary waste rack 51 can be fixed back to the auxiliary seat 53 by the auxiliary bolt 54 to restore the auxiliary function.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting hydraulic gate for water conservancy projects, comprising a gate frame (1), characterized in that: A lifting cylinder (2) is fixedly installed at the center of the upper surface of the gate frame (1). A gate plate (3) is fixedly installed at the output end of the lifting cylinder (2). Two sets of sliding strips (31) are fixedly connected to the left and right surfaces of the gate plate (3). Sliding grooves (11) are opened on the left and right surfaces of the inner wall of the gate frame (1). Sealing and protective components (4) are provided on the left and right surfaces of the gate frame (1). An auxiliary component (5) is provided on the front surface of the gate plate (3). The sealing and protective assembly (4) includes a pneumatic compressor (41). The output end of the pneumatic compressor (41) is detachably connected to an air collecting valve (43) via an air supply pipe (42). The output end of the air collecting valve (43) is connected to an inflatable rubber seal (44). Multiple sets of mounting seats (46) are fixedly installed on the inner side of the inflatable rubber seal (44). A ball bearing (47) is rolled on the upper surface of the mounting seat (46). A wear-resistant layer (45) is provided on the right surface of the inflatable rubber seal (44).

2. A lifting hydraulic gate for water conservancy projects according to claim 1, characterized in that: The auxiliary component (5) includes an auxiliary waste rack (51). The lower surface of the auxiliary waste rack (51) has multiple sets of evenly distributed drainage holes (52). The bottom ends of the left and right surfaces of the auxiliary waste rack (51) have multiple sets of auxiliary through holes (55). The top of the rear surface of the auxiliary waste rack (51) is fixedly connected to an auxiliary seat (53). An auxiliary bolt (54) is detachably connected to the inner wall groove of the auxiliary seat (53).

3. A lifting hydraulic gate for water conservancy projects according to claim 1, characterized in that: The sealing and protective assembly (4) also includes a fixing plate (48), which is fixedly installed on the rear side of the inner wall of the gate frame (1) near the slide groove (11). Multiple sets of rollers (49) are rotatably connected to the right surface of the fixing plate (48).

4. A lifting hydraulic gate for water conservancy projects according to claim 3, characterized in that: The outer wall of the roller (49) is in contact with the rear surface of the gate (3).

5. A lifting hydraulic gate for water conservancy projects according to claim 1, characterized in that: The outer wall of the ball (47) is in contact with the front and rear surfaces of the slide bar (31).

6. A lifting hydraulic gate for water conservancy projects according to claim 1, characterized in that: The inflatable rubber seal (44) is embedded in the inner wall of the groove (11).

7. A lifting hydraulic gate for water conservancy projects according to claim 1, characterized in that: The air compressor (41) is fixedly installed on the left end of the upper surface of the gate frame (1).

8. A lifting hydraulic gate for water conservancy projects according to claim 2, characterized in that: The auxiliary waste rack (51) is fixedly installed on the front surface of the gate (3) by auxiliary bolts (54).

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