Hydraulic hoist for miter gate

Abstract

The invention provides a miter gate hydraulic hoist, and relates to the technical field of hydroelectric power station valve control, the miter gate hydraulic hoist comprises a sleeve and a piston rod, and the piston rod is slidably mounted in the sleeve; the second sealing cover is fixedly mounted on one side of the sleeve; the first sealing cover is fixedly mounted on the other side of the sleeve; and the cleaning assembly comprises a supporting pipe rotationally installed in the second sealing cover in an embedded mode, the outer portion of one side of the supporting pipe is fixedly connected with a first sealing ring, and the inner side of the first sealing ring is attached to the outer wall of the piston rod. By means of the technical scheme, the hydraulic supply system drives the piston rod to stretch out and draw back, and opening and closing of the hydraulic miter gate valve are completed; a supporting pipe and a sealing ring in the cleaning assembly automatically scrape silt and dust when the piston rod retracts, and impurities are guided into a dust collection area and prevented from entering a sealing cavity to cause abrasion; the valve opening and closing and the piston rod protection are synchronously carried out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve control of hydroelectric power stations, and particularly relates to a miter gate hydraulic hoist. BACKGROUND

[0002] The hydraulic hoist is a mechatronic device composed of a hydraulic system and a hydraulic cylinder, and is mainly used for gate opening and closing control in the fields of water conservancy and hydropower, flood control and drainage, river regulation, etc. The device converts mechanical energy into hydraulic energy through a hydraulic pump to drive the piston to move the gate linearly, which can adapt to various working conditions such as flat gate and arc gate.

[0003] In the application of hydroelectric power generation, the hydraulic rod is often used to drive the opening and closing action of the hydraulic valve. However, since the operating environment is mostly open water, the piston rod part is often exposed to the interface area between air and water splashing. During long-term operation, the mud splashing caused by water impact and the dust impurities settled in the air are easily attached to the surface of the piston rod.

[0004] Once these impurities enter the sealing cavity with the piston rod repeatedly extending and retracting, not only will it cause wear of the sealing element, but also it may cause scratches on the surface of the piston rod, increasing the friction resistance, so that the valve opening and closing action becomes slow or even stuck.

[0005] At the same time, the mud and dust can easily form a hardened sediment layer in the water vapor environment, further exacerbating the adhesion of the piston rod and the sealing assembly, and shortening the service life of the hydraulic rod as a whole. SUMMARY

[0006] The purpose of the present application is to solve the shortcomings in the prior art.

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme: a miter gate hydraulic hoist, comprising a sleeve, further comprising a piston rod, the piston rod is slidingly installed inside the sleeve; a second sealing cover, the second sealing cover is fixedly installed on one side of the sleeve; a first sealing cover, the first sealing cover is fixedly installed on the other side of the sleeve; a cleaning assembly, the cleaning assembly comprises a support pipe rotatably installed in the second sealing cover, a first sealing ring is fixedly connected to the outside of one side of the support pipe, the inner side of the first sealing ring is in close contact with the outer wall of the piston rod, and the first sealing ring collects the impurities on the surface of the piston rod and transmits them to the support pipe for dust collection when the piston rod retracts; wherein the second sealing cover is integrally formed with a first transmission pipe, the sleeve is integrally formed with a second transmission pipe, the first transmission pipe and the second transmission pipe are respectively connected to the hydraulic supply system to complete the extension and retraction drive of the piston rod, thereby realizing the opening and closing action of the valve for hydroelectric power generation.

[0008] In at least some embodiments, a second connecting seat is fixedly connected to the outside of the first sealing cover, a first connecting seat is fixedly installed at the end of the piston rod away from the sleeve, the first connecting seat and the second connecting seat are the same structure, the second connecting seat is used for rotating connection with the water channel base, the first connecting seat is used for rotating connection with the valve, thereby realizing the opening and closing of the valve to complete the tidal power generation water source control, and the first sealing cover is externally sleeved with a third sealing ring.

[0009] In at least some embodiments, the piston rod comprises a piston disc slidingly installed in the inside of the sleeve, and two second sealing rings are installed on the outside of the piston disc.

[0010] In at least some embodiments, a sliding rod fixed on one side of the piston disc extends to the outside through the sleeve, the first connecting seat comprises a seat body fixed at one end of the sliding rod, and a bidirectional bearing is fixedly installed in the inside of the seat body.

[0011] In at least some embodiments, an oil injection pipe is fixedly installed on one side of the seat body, the oil injection pipe penetrates through the seat body and the bidirectional bearing, and the lubricating oil supply transmission action of the bidirectional bearing is realized.

[0012] In at least some embodiments, the first sealing ring is double-layered, the inner wall of the first sealing ring is slidingly attached to the piston rod, and is provided with a chamfer for scraping off impurities on the outer wall of the piston rod and guiding transmission into the support pipe.

[0013] In at least some embodiments, the outer layer of the first sealing ring is attached to the inner wall of the first sealing cover, a plurality of inclined plates are fixedly installed in the annular channel in the inside of the support pipe in a circumferential array, a dust collecting pipe fixed in the first sealing cover is rotatably connected to the support pipe and penetrates through, when the support pipe rotates, the inclined plates transmit the impurities from the support pipe to the dust collecting pipe, a discharging port is opened in the lower part of the dust collecting pipe and penetrates through to the outside, and the impurity guiding transmission action is realized.

[0014] In at least some embodiments, a transmission seat is fixedly installed in the inside of the first sealing cover, an impeller pipe is installed on the inner side of a small gear ring rotatably installed on the outside of the transmission seat through a one-way bearing, a large gear ring fixed on the outside of the support pipe is meshingly connected to the small gear ring, and when the transmission seat passes through the medium, the impeller pipe rotates and drives the support pipe to rotate.

[0015] In at least some embodiments, a plug pipe is inserted and installed on the outside of the second transmission pipe, the plug pipe is used for connecting a hydraulic system, a hose is further fixedly connected to one side of the plug pipe, a transmission groove penetrating through the transmission seat is formed in the inside of the first sealing cover, and a plug seat fixedly installed at the position of the transmission groove of the first sealing cover is fixedly connected to the end of the hose away from the plug pipe.

[0016] In at least some embodiments, the transmission seat is fixedly connected with a third transmission pipe on one side away from the transmission groove, a sliding pipe is slidably installed in the third transmission pipe on one side by a spring, the sliding pipe is provided with a transverse channel, the third transmission pipe receives the medium to be transmitted to the inside of the sleeve, the sliding pipe extends out against the spring tension, and then the third transmission pipe is penetrated with the sleeve to realize synchronous liquid input, and then drive the support pipe to rotate to guide the dust removal action.

[0017] Compared with the prior art, the advantages and positive effects of the present application are that: In the present application, the reciprocating motion of the piston rod is driven by the hydraulic system to realize the opening and closing of the miter gate valve for hydroelectric power generation. When working, the hydraulic supply system is communicated with the hydraulic pump station through the first transmission pipe integrally formed on the second sealing cover and the second transmission pipe integrally formed on the sleeve, the hydraulic oil enters the inside of the sleeve under the action of high pressure, the piston rod is extended to drive the miter gate valve to open; when it is needed to close the valve, the hydraulic system supplies oil or returns oil in reverse, the piston rod is retracted under the action of hydraulic pressure to push the valve to close, thereby completing the effective regulation and control of water flow, in this process, the piston rod is frequently exposed to water splashing and air environment, which is easy to carry mud and dust into the sealing cavity, affecting the service life of the equipment. To solve this problem, a cleaning assembly is arranged, the support pipe in the cleaning assembly is rotatably embedded in the inside of the second sealing cover, and the first sealing ring is fixedly arranged on the outside of the support pipe; the inside of the first sealing ring is tightly attached to the outer wall of the piston rod, and in the retraction action of the piston rod, the mud, dust and scale adhered to the surface of the piston rod can be scraped off and collected, so that they are prevented from entering the inside of the sleeve, the scraped impurities are guided into the dust collection position through the support pipe channel, the centralized collection and isolation of the impurities are realized, and the cleanliness of the hydraulic cavity and the long-term stable operation of the sealing member are ensured. The hydraulic opening and closing machine not only can realize the efficient opening and closing of the valve, but also can significantly improve the durability and protection effect of the piston rod through the cleaning assembly, effectively prolong the service life of the equipment and improve the reliability and safety of the hydroelectric power generation operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional schematic view of the overall structure of the miter gate hydraulic opening and closing machine is provided for the present application. Figure 2 A three-dimensional schematic view of the structure of the second sealing cover in the miter gate hydraulic opening and closing machine is provided for the present application. Figure 3 A three-dimensional schematic view of the structure of the second sealing cover in the miter gate hydraulic opening and closing machine is provided for the present application. Figure 4 A three-dimensional schematic view of the structure of the second sealing cover in the miter gate hydraulic opening and closing machine is provided for the present application. Figure 3 A three-dimensional schematic view of the structure of the second sealing cover in the miter gate hydraulic opening and closing machine is provided for the present application. Figure 5 A structure perspective view of a dust collecting ring in a hydraulic hoist of a miter gate is provided in the present application; Figure 6 A structure perspective view of a support pipe section in a hydraulic hoist of a miter gate is provided in the present application; Figure 7 A structure perspective view of a third transmission pipe in a hydraulic hoist of a miter gate is provided in the present application; Figure 8 A structure perspective view of a hose in a hydraulic hoist of a miter gate is provided in the present application; Figure 9 A structure perspective view of a piston rod in a hydraulic hoist of a miter gate is provided in the present application; Figure 10 A structure perspective view of a first connecting seat in a hydraulic hoist of a miter gate is provided in the present application.

[0019] Legend: 1, sleeve; 2, first sealing cover; 3, second sealing cover; 4, first transmission pipe; 5, second transmission pipe; 6, cleaning assembly; 7, piston rod; 8, first connecting seat; 9, second connecting seat; 10, third sealing ring; 601, first sealing ring; 602, support pipe; 603, inclined plate; 604, large tooth ring; 605, transmission seat; 606, impeller pipe; 607, small tooth ring; 608, third transmission pipe; 609, transmission groove; 610, socket; 611, sliding pipe; 612, transverse channel; 613, hose; 614, insertion pipe; 615, dust collecting pipe; 616, discharge port; 701, sliding rod; 702, piston disc; 703, second sealing ring; 801, seat body; 802, bidirectional bearing; 803, oil injection pipe. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described below in combination with the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can be practiced in other manners different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0022] Embodiment, according to Figures 1-10As shown, the embodiment of the present application provides a hydraulic hoist for miter gate, which comprises a sleeve 1, a piston rod 7, a second sealing cover 3, a first sealing cover 2 and a cleaning assembly 6. The piston rod 7 is slidingly installed in the sleeve 1. The second sealing cover 3 is fixedly installed on one side of the sleeve 1. The first sealing cover 2 is fixedly installed on the other side of the sleeve 1. The cleaning assembly 6 comprises a support pipe 602 which is rotatably installed in the second sealing cover 3. A first sealing ring 601 is fixedly connected to the outside of one side of the support pipe 602. The inner side of the first sealing ring 601 is in close contact with the outer wall of the piston rod 7. When the piston rod 7 retracts, the first sealing ring 601 collects the impurities on the surface of the piston rod 7 and transmits them to the support pipe 602 for dust collection. The first transmission pipe 4 is integrally formed on the second sealing cover 3. The second transmission pipe 5 is integrally formed on the sleeve 1. The first transmission pipe 4 and the second transmission pipe 5 are respectively connected to the hydraulic supply system to drive the extension and retraction of the piston rod 7, thereby realizing the opening and closing of the valve for hydroelectric power generation.

[0023] The hydraulic hoist for miter gate mainly drives the reciprocating movement of the piston rod 7 through the hydraulic system to realize the miter gate type opening and closing of the valve for hydroelectric power generation.

[0024] During operation, the hydraulic supply system is connected to the hydraulic pump station through the first transmission pipe 4 integrally formed on the second sealing cover 3 and the second transmission pipe 5 integrally formed on the sleeve 1. The hydraulic oil enters the inside of the sleeve 1 under high pressure, pushes the piston rod 7 to extend and drives the miter gate valve to open. When it is necessary to close the valve, the hydraulic system supplies oil or returns oil in the opposite direction. The piston rod 7 retracts under the action of the hydraulic pressure, pushes the valve to close, thereby completing the effective regulation and control of the water flow. In this process, the piston rod 7 is frequently exposed to the splashing water flow and air environment, which easily carries silt and dust into the sealing cavity, affecting the service life of the equipment. To solve this problem, the cleaning assembly 6 is provided. The support pipe 602 in the cleaning assembly 6 is rotatably installed in the second sealing cover 3. The support pipe 602 has the first sealing ring 601 fixedly connected to the outside thereof. The inner side of the first sealing ring 601 is in close contact with the outer wall of the piston rod 7. In the retraction action of the piston rod 7, the first sealing ring 601 can scrape and collect the silt, dust and scale adhered to the surface of the piston rod 7, avoiding the entry of the silt, dust and scale into the inside of the sleeve 1. The scraped impurities are guided into the dust collection position through the channel of the support pipe 602, realizing the centralized collection and isolation of the impurities, thereby ensuring the cleanliness of the hydraulic cavity and the long-term stable operation of the sealing member.

[0025] In the embodiment, the first sealing cover 2 is externally fixedly connected with a second connecting seat 9, and the piston rod 7 is fixedly installed with a first connecting seat 8 at an end away from the sleeve 1. The first connecting seat 8 and the second connecting seat 9 are of the same structure. The second connecting seat 9 is used to be rotatably connected with the water channel base, and the first connecting seat 8 is used to be rotatably connected with the valve, thereby realizing the opening and closing of the valve to complete the tidal power water source control. The first sealing cover 2 is externally sleeved with a third sealing ring 10. The piston rod 7 comprises a piston disc 702 slidably installed inside the sleeve 1, and the piston disc 702 is externally sleeved with two second sealing rings 703. A slide rod 701 fixed at one side of the piston disc 702 extends to the outside through the sleeve 1. The first connecting seat 8 comprises a seat body 801 fixed at one end of the slide rod 701, and the seat body 801 is internally fixedly installed with a bidirectional bearing 802. An oil injection pipe 803 is fixedly installed at one side of the seat body 801 and penetrates through the seat body 801 and the bidirectional bearing 802, thereby realizing the lubricating oil supply transmission action of the bidirectional bearing 802.

[0026] In use, the piston rod 7 mainly relies on the hydraulic system to reciprocate, realizes the opening and closing of the hydraulic valve, and thereby completes the water source regulation and control in the tidal power process. The sleeve 1 is respectively provided with a first sealing cover 2 and a second sealing cover 3 at two ends. The piston rod 7 is slidably installed inside the sleeve 1 and is sealedly matched with the hydraulic chamber through the piston disc 702. In work, the hydraulic supply system inputs the hydraulic oil into the sleeve 1 cavity through the transmission pipe, drives the piston disc 702 to generate linear motion, and thereby drives the piston rod 7 to extend outwards. When the hydraulic oil reversely flows back, the piston disc 702 drives the piston rod 7 to retract, and thereby realizes the opening and closing action of the valve.

[0027] At the connecting part of the valve, the piston rod 7 is fixedly installed with a first connecting seat 8 at an end away from the sleeve 1. The first sealing cover 2 outside the sleeve 1 is fixedly installed with a second connecting seat 9. The two are of the same structure. The second connecting seat 9 is rotatably connected with the water channel base, so that the whole hydraulic opening and closing machine is stably installed on the foundation structure. The first connecting seat 8 is rotatably connected with the valve, so as to ensure that the piston rod 7 can smoothly drive the valve to open and close in the extension and retraction process. This design realizes the efficient transmission matching between the power output end and the valve, avoids the motion interference caused by one-way fixation, and improves the flexibility and reliability of the valve opening and closing.

[0028] Moreover, the piston rod 7 internally comprises a piston disc 702 slidingly installed in the sleeve 1, and the piston disc 702 is externally sleeved with two second sealing rings 703, such a double-sealing ring structure can not only effectively prevent hydraulic oil leakage, but also improve sealing stability under high-pressure working environment, thereby ensuring the pressure resistance and durability of the piston rod 7 in long-term operation; the slide rod 701 fixed on one side of the piston disc 702 penetrates the sleeve 1 and extends to the outside, and the slide rod 701 is connected with the valve through the seat body 801 of the first connecting seat 8; in order to further reduce friction loss, the first connecting seat 8 is internally fixedly installed with a bidirectional bearing 802, which can provide bidirectional rotation support when the piston rod 7 is extended or retracted, so that the valve is more uniformly stressed during opening and closing, and structural damage caused by eccentric wear is avoided.

[0029] Notably, the first connecting seat 8 is also fixedly installed with an oil injection pipe 803 on one side of the seat body 801, and the oil injection pipe 803 penetrates into the bidirectional bearing 802, which can realize directional supply and transmission of lubricating oil; during use, the bidirectional bearing 802 can be regularly supplied with lubricating oil through the oil injection pipe 803, so as to ensure that the bearing still operates with low friction under high-frequency rotation and heavy load conditions, thereby effectively prolonging the service life of the bearing and the piston rod 7 as a whole. In summary, through multiple cooperation of hydraulic drive, double-sealing ring protection, bidirectional bearing 802 rotation support and oil injection lubrication supply, not only the efficient opening and closing of the water power valve in tidal power generation is realized, but also the stability, durability and maintenance convenience of the structure are taken into account, which has good application prospect.

[0030] In the embodiment, the first sealing ring 601 is double-layered, the inner wall of the first sealing ring 601 is slidingly attached to the piston rod 7 and is chamfered, for scraping off impurities on the outer wall of the piston rod 7 and guiding transmission into the support pipe 602; the outer layer of the first sealing ring 601 is attached to the inner wall of the first sealing cover 2, and a plurality of inclined plates 603 are fixedly installed in the annular channel inside the support pipe 602 in circumferential array, the dust collection pipe 615 fixed in the first sealing cover 2 is rotatably connected to the support pipe 602 and penetrates therethrough, when the support pipe 602 rotates, the inclined plates 603 transmit the impurities from the support pipe 602 to the dust collection pipe 615, the discharge port 616 opened in the lower part of the dust collection pipe 615 is connected to the outside, realizing the guided transmission of impurities; the transmission seat 605 is fixedly installed inside the first sealing cover 2, the impeller pipe 606 is installed inside the small tooth ring 607 rotatably installed outside the transmission seat 605 through a one-way bearing, the large tooth ring 604 fixed outside the support pipe 602 is in meshing connection with the small tooth ring 607, when the medium passes through the transmission seat 605, the impeller pipe 606 rotates and drives the support pipe 602 to rotate.

[0031] In use, in order to solve the problem that the piston rod 7 surface is easy to adhere to impurities such as silt and dust, through the cooperative work of the first sealing ring 601, the support pipe 602, the dust collecting pipe 615 and the transmission seat 605, the automatic cleaning and impurity guiding and discharging functions of the piston rod 7 are realized. The working process is as follows: when the hydraulic system drives the piston rod 7 to reciprocate, the first sealing ring 601 arranged inside the second sealing cover 3 plays a cleaning role. The first sealing ring 601 adopts a double-layer structure, the inner layer is in sliding fit with the outer wall of the piston rod 7, and a chamfer is arranged at the fit position. The chamfer not only enhances the friction and scraping force of the sealing ring and the piston rod 7, but also effectively scrapes off the silt, dust and scale impurities adhered to the surface of the piston rod 7 during the retraction of the piston rod 7, and guides and transmits them to the inside of the support pipe 602. At the same time, the outer layer of the first sealing ring 601 is in close fit with the inner wall of the first sealing cover 2, which plays a fixing and leakage-proof role, so that the impurities can be directed into the support pipe 602 without scattering into the sealing cavity.

[0032] Inside the support pipe 602, an annular channel is arranged, and a plurality of inclined plates 603 are arranged in the channel in a circumferential array. During the rotation of the support pipe 602, the inclined plates 603 can gradually push, extrude and transmit the collected impurities to the through position of the support pipe 602 and the dust collecting pipe 615 by the guiding effect of the inclination angle. The dust collecting pipe 615 is connected with the support pipe 602 by rotary connection and is in communication with the inside channel of the support pipe 602, and can receive the impurities guided by the inclined plates 603. When the support pipe 602 continues to rotate, the impurities are continuously brought into the dust collecting pipe 615 by the inclined plates 603, and finally are discharged to the outside through the discharge port 616 arranged at the lower part of the dust collecting pipe 615, realizing the centralized collection and discharge of the impurities and avoiding the entry into the hydraulic sealing system.

[0033] In order to ensure the continuous rotation of the support pipe 602, the transmission seat 605 is further arranged inside the first sealing cover 2. The small gear ring 607 is rotatably installed outside the transmission seat 605. The impeller pipe 606 is installed inside the small gear ring 607 through a one-way bearing. When the liquid medium flows through the transmission seat 605, the impeller pipe 606 rotates under the action of the water flow. Due to the limitation of the one-way bearing, the impeller pipe 606 can drive the small gear ring 607 to rotate in one direction. The small gear ring 607 is in meshing connection with the large gear ring 604 fixed outside the support pipe 602, so as to drive the support pipe 602 to continuously rotate. During the rotation of the support pipe 602, the stable cleaning action of the support pipe 602 and the impurity guiding and transmission of the inclined plates 603 in the inside of the support pipe 602 are realized. Finally, the complete closed-loop cleaning process of "impurity scraping - guiding into the support pipe 602 - inclined plate 603 guiding - dust collecting pipe 615 collecting - discharge port 616 discharging" is completed.

[0034] In summary, while achieving the valve opening and closing control, the combination of the sealing ring, the support pipe 602, the dust collecting pipe 615 and the gear transmission-impeller water mechanism can automatically scrape, collect and guide out the impurities on the surface of the piston rod 7, which not only significantly improves the cleanliness and durability of the piston rod 7, but also avoids the problem of sand entering the hydraulic cavity to cause wear, effectively prolongs the service life of the whole machine and improves the reliability of the hydroelectric power generation system.

[0035] In the embodiment, the second transmission pipe 5 is externally inserted with a plug pipe 614 for connecting the hydraulic system, and a hose 613 is fixedly connected to one side of the plug pipe 614. The first sealing cover 2 is internally provided with a transmission groove 609 communicating with the transmission seat 605, and a socket 610 fixedly installed at the position of the transmission groove 609 of the first sealing cover 2 is fixedly connected to the end of the hose 613 away from the plug pipe 614. The transmission seat 605 is fixedly connected to the third transmission pipe 608 on the side away from the transmission groove 609. The third transmission pipe 608 is internally slidably installed with a sliding pipe 611 on one side through a spring, and the sliding pipe 611 is provided with a transverse channel 612. The third transmission pipe 608 receives the medium transmitted to the inside of the sleeve 1, the sliding pipe 611 extends against the spring tension, and then the third transmission pipe 608 communicates with the sleeve 1, realizing synchronous liquid input, and driving the support pipe 602 to rotate and guide the dust removal action.

[0036] During the hydraulic driving process, the multi-stage transmission pipe and the sliding mechanism are arranged to realize the linkage function of hydraulic energy supply and rotation of the support pipe 602 for guiding dust removal. The second transmission pipe 5 is externally inserted with a plug pipe 614 as a docking port connected with the hydraulic system to ensure that the external hydraulic oil can smoothly enter the inside of the hoist. The plug pipe 614 is fixedly connected with a hose 613 on one side, and the other end of the hose 613 is connected with the position of a transmission groove 609 internally provided in the first sealing cover 2. A socket 610 is fixed at the transmission groove 609, and the socket 610 is fixedly connected with the hose 613, so as to form a path for the hydraulic medium to enter the transmission groove 609 in the first sealing cover 2 from the outside system through the plug pipe 614 and the hose 613. After the hydraulic medium passes through the transmission groove 609, it enters the transmission seat 605 and further flows to the third transmission pipe 608 fixedly installed on the side away from the transmission groove 609.

[0037] Inside the third transmission pipe 608, a reciprocating sliding pipe 611 is slidingly installed, which is kept in a retracted state under the action of a spring; a transverse channel 612 is formed in the sliding pipe 611; when the external hydraulic medium is continuously input into the third transmission pipe 608, the fluid pressure gradually increases and pushes the sliding pipe 611 to extend outward against the pulling force of the spring, thereby forming a through passage between the third transmission pipe 608 and the sleeve pipe 1, realizing the synchronous transmission of the hydraulic medium into the inside of the sleeve pipe 1; the hydraulic medium drives the piston rod 7 to extend and retract, realizing the opening and closing action of the valve; on the other hand, part of the fluid enters the impeller pipe 606 related to the transmission seat 605, pushing the impeller pipe 606 to rotate; the impeller pipe 606 drives the small tooth ring 607 to rotate through the one-way bearing, and drives the large tooth ring 604 to realize the rotation of the support pipe 602; in the rotating process, the support pipe 602 cooperates with the internal inclined plate 603 to complete the guiding and discharging of impurities, thereby achieving the dust removal effect.

[0038] Therefore, through the cooperation of the insertion pipe 614, the hose 613, the socket 610, the third transmission pipe 608 and the sliding pipe 611, the stable input of the hydraulic medium is ensured, and the synchronization of the valve opening and closing and the automatic cleaning of the piston rod 7 is realized in the extension and retraction of the sliding pipe 611 and the rotation of the support pipe 602, thereby improving the reliability and service life of the hydraulic opening and closing machine.

[0039] On the basis of the traditional hydraulic rod, the improved scheme of the present application only needs to optimize the key parts, i.e., replace the first sealing cover 2 with a structure having cleaning and guiding functions, and install the insertion pipe 614 outside the second transmission pipe 5, to realize the quick docking with the external hydraulic system.

[0040] Through this modular modification method, the original hydraulic opening and closing machine or the valve driving system does not need to be replaced or greatly adjusted, and the protection and self-cleaning ability of the piston rod 7 can be quickly improved on the premise of retaining the main mechanism. Compared with the traditional scheme, the modification greatly reduces the investment cost of equipment upgrading, avoids the construction complexity and downtime loss caused by large-scale disassembly, and has the advantages of simple operation and strong compatibility, and is suitable for the quick upgrading and long-term maintenance of existing hydroelectric power equipment.

[0041] The working principle of the present application is as follows: during operation, the hydraulic supply system is communicated with the hydraulic pump station through the first transmission pipe 4 integrally formed on the second sealing cover 3 and the second transmission pipe 5 integrally formed on the sleeve 1, the hydraulic oil enters the inside of the sleeve 1 under the action of high pressure, pushes the piston rod 7 to extend, and drives the miter valve to open; when it is needed to close the valve, the hydraulic system reversely supplies oil or returns oil, the piston rod 7 is retracted under the action of hydraulic pressure, pushes the valve to close, thereby completing the effective regulation and control of water flow, in this process, the piston rod 7 is frequently exposed to water splashing and air environment, and is easy to carry silt and dust into the sealing cavity, affecting the service life of the equipment; in order to solve the problem, the cleaning assembly 6 is arranged, the support pipe 602 in the cleaning assembly 6 is rotatably embedded in the inside of the second sealing cover 3, and the first sealing ring 601 is fixed outside the support pipe 602; the inner side of the first sealing ring 601 is closely combined with the outer wall of the piston rod 7, in the retraction action of the piston rod 7, the silt, dust and scale adhered to the surface of the piston rod 7 can be scraped and collected, and it is avoided to enter the inside of the sleeve 1, the scraped impurities are guided into the dust collecting position through the channel of the support pipe 602, the centralized collection and isolation of the impurities are realized, thereby ensuring the cleanliness in the hydraulic cavity and the long-term stable operation of the sealing element.

[0042] The above is only the preferred embodiment of the present application, and does not limit other forms of the present application, any skilled person in the art can change or modify the above disclosed technical content into equivalent embodiments applied to other fields with equivalent changes, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiment still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A hydraulic gate opener / closer, comprising a sleeve (1), characterized in that, Also includes: Piston rod (7), which is slidably mounted inside the sleeve (1); The second sealing cap (3) is fixedly installed on one side of the sleeve (1); The first sealing cap (2) is fixedly installed on the other side of the sleeve (1); The cleaning component (6) includes a support tube (602) that is embedded and rotatably installed inside the second sealing cover (3). A first sealing ring (601) is fixedly connected to the outside of one side of the support tube (602). The inner side of the first sealing ring (601) is in contact with the outer wall of the piston rod (7). When the piston rod (7) retracts, the first sealing ring (601) collects impurities on the surface of the piston rod (7) and transmits them to the support tube (602) for dust collection. The second sealing cover (3) is integrally formed with a first transmission pipe (4), and the sleeve (1) is integrally formed with a second transmission pipe (5). The first transmission pipe (4) and the second transmission pipe (5) are respectively used to connect the hydraulic supply system to complete the extension and retraction drive of the piston rod (7), thereby realizing the opening and closing action of the valve for hydropower generation.

2. The hydraulic gate opener / closer according to claim 1, characterized in that: The first sealing cover (2) is fixedly connected to the outside of the second connecting seat (9). The piston rod (7) is fixedly installed with the first connecting seat (8) at the end away from the sleeve (1). The first connecting seat (8) and the second connecting seat (9) have the same structure. The second connecting seat (9) is used to rotately connect with the water channel base. The first connecting seat (8) is used to rotately connect with the valve, thereby realizing the opening and closing of the valve to complete the control of the tidal power generation water source. The first sealing cover (2) is fitted with a third sealing ring (10).

3. The hydraulic opening and closing mechanism for a miter gate according to claim 2, characterized in that: The piston rod (7) includes a piston disc (702) slidably mounted inside the sleeve (1), and two second sealing rings (703) are sleeved on the outside of the piston disc (702).

4. The hydraulic gate opener / closer according to claim 3, characterized in that: A slide rod (701) fixed to one side of the piston disc (702) extends through the sleeve (1) to the outside. The first connecting seat (8) includes a seat body (801) fixed to one end of the slide rod (701), and a bidirectional bearing (802) is fixedly installed inside the seat body (801).

5. A hydraulic gate opener / closer according to claim 4, characterized in that: An oil injection pipe (803) is fixedly installed on one side of the seat (801). The oil injection pipe (803) is connected to the bidirectional bearing (802) through the seat (801) to realize the lubricating oil supply and transmission action of the bidirectional bearing (802).

6. The hydraulic gate opener / closer according to claim 1, characterized in that: The first sealing ring (601) is double-layered. The inner wall of the first sealing ring (601) slides and fits against the piston rod (7), and is chamfered to scrape off impurities from the outer wall of the piston rod (7) and guide them to the support tube (602).

7. A hydraulic gate opener / closer according to claim 6, characterized in that: The outer layer of the first sealing ring (601) is in contact with the inner wall of the first sealing cover (2), and several inclined plates (603) are fixedly installed in the circumferential array inside the annular channel of the support tube (602). The dust collection tube (615) fixed in the first sealing cover (2) is rotatably connected to and passes through the support tube (602). When the support tube (602) rotates, the inclined plates (603) transfer impurities from the support tube (602) to the dust collection tube (615). The discharge port (616) opened at the bottom of the dust collection tube (615) is connected to the outside, realizing the impurity guiding and transmission action.

8. A hydraulic gate opener / closer according to claim 7, characterized in that: The first sealing cover (2) has a transmission seat (605) fixedly installed inside. An impeller tube (606) is installed on the inner side of a small toothed ring (607) rotatably installed outside the transmission seat (605) via a one-way bearing. A large toothed ring (604) fixed outside the support tube (602) meshes with the small toothed ring (607). When the transmission seat (605) passes through the medium, the impeller tube (606) rotates and drives the support tube (602) to rotate.

9. A hydraulic gate opener / closer according to claim 8, characterized in that: The second transmission tube (5) is externally connected to a tube (614), which is used to connect to the hydraulic system. A hose (613) is also fixedly connected to one side of the tube (614). The first sealing cover (2) has a transmission groove (609) that communicates with the transmission seat (605). A socket (610) fixedly installed in the transmission groove (609) of the first sealing cover (2) is fixedly connected to the end of the hose (613) away from the tube (614).

10. A hydraulic gate opener / closer according to claim 9, characterized in that: A third transmission pipe (608) is fixedly connected to the side of the transmission seat (605) away from the transmission groove (609). A slide tube (611) is slidably installed inside the third transmission pipe (608) by a spring. The slide tube (611) has a transverse channel (612). The third transmission pipe (608) receives the medium and transmits it into the sleeve (1). The slide tube (611) extends against the spring tension, and then the third transmission pipe (608) and the sleeve (1) are connected to achieve synchronous liquid input, thereby driving the support pipe (602) to rotate to perform a guiding and dust removal action.

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