A valve device that automatically opens and closes by means of water pressure

Abstract

The application provides a valve device which is automatically opened and closed by water force, and relates to the technical field of valves.The valve device comprises a baffle, a valve cylinder and a valve cover, the valve cylinder is arranged at the bottom of the baffle, the valve cover is movably arranged in the valve cylinder, the edge wall of the baffle is used for being fixed to the inner side wall of a sewage well, and the outer side wall of the valve cylinder is used for being fixed in the flow guide groove at the bottom of the sewage well; a control rod rotating shaft is rotatably connected to the top of the baffle; at least one first control rod and at least one water force floating delay control mechanism are arranged, one end of the first control rod is fixed to the control rod rotating shaft, the other end of the first control rod is arranged on the water inlet side of the baffle and connected with the water force floating delay control mechanism; the valve device utilizes the existing water as power to drive operation, does not need additional power input, is completely automatically operated without human intervention, has a simple and firm overall structure and high reliability.

Description

Technical Field

[0001] This invention belongs to the field of valve technology, and more specifically, relates to a valve device that automatically opens and closes using hydraulic power. Background Technology

[0002] Urban drainage systems are engineering facilities systems that treat and remove urban sewage and rainwater, and are a component of urban public utilities.

[0003] Currently, in urban drainage systems, when the water flow is slow, larger particles tend to settle at the bottom of the pipes, causing sediment buildup and affecting water flow. Summary of the Invention

[0004] The purpose of this invention is to provide a valve device that automatically opens and closes using hydraulic power, addressing the shortcomings of existing technologies. This solves the problem mentioned in the background art where, in urban drainage systems, when the water flow is slow, larger particles tend to accumulate at the bottom of the pipe, causing sediment buildup and affecting water flow.

[0005] To achieve the above objectives, the present invention provides a valve device that automatically opens and closes using hydraulic power, the valve device comprising:

[0006] The system includes a baffle, a valve cylinder, and a valve cover. The valve cylinder is located at the bottom of the baffle, and the valve cover is movably located inside the valve cylinder. The edge wall of the baffle is fixed to the inner wall of the sewage well, and the outer wall of the valve cylinder is fixed to the bottom guide groove of the sewage well.

[0007] A control lever shaft is rotatably connected to the top of the baffle.

[0008] At least one first control rod and at least one hydraulic floating delay control mechanism, one end of the first control rod is fixed to the control rod shaft, and the other end of the first control rod is disposed on the water inlet side of the baffle and connected to the hydraulic floating delay control mechanism;

[0009] The second control rod and the hydraulic automatic opening and closing linkage mechanism are as follows: one end of the second control rod is fixed to the control rod shaft, and the other end of the second control rod is located on the water outlet side of the baffle and is hinged to one end of the hydraulic automatic opening and closing linkage mechanism. The other end of the hydraulic automatic opening and closing linkage mechanism is connected to the valve cover. The hydraulic automatic opening and closing linkage mechanism can cause the valve cover to open after a delay under the gravity of the hydraulic floating delay control mechanism, thereby accumulating a preset amount of incoming water on the water inlet side of the baffle.

[0010] Preferably, the valve cover includes a valve cover plate, a valve sealing plate, and a valve gland. The valve sealing plate is fixed between the valve cover plate and the valve gland, and the outer circumferential side of the valve sealing plate can fit and seal against the inner wall of the valve cylinder.

[0011] Preferably, the diameter of the valve sealing plate is greater than the diameter of the valve cover plate, the inner diameter of the valve cylinder, and the diameter of the valve gland.

[0012] Preferably, the valve device further includes:

[0013] Two first rotating shaft seats are symmetrically fixed to the middle of the drain side wall of the baffle.

[0014] Two valve arms, each valve arm being triangular in shape, with one corner of each valve arm hinged to a first rotating shaft between two first rotating shaft seats, and one side of each valve arm fixed to the valve cover.

[0015] Two second rotating shaft seats are symmetrically fixed to the upper part of the drain side wall of the baffle.

[0016] Preferably, the hydraulic automatic opening and closing linkage mechanism includes:

[0017] A first valve connecting rod, a second valve connecting rod, and a second rotating shaft. One end of the first valve connecting rod is hinged to a third rotating shaft between the other corner ends of the two valve arms. One end of the second valve connecting rod is hinged to a fourth rotating shaft between the two second rotating shaft seats. The other ends of the first valve connecting rod and the other ends of the second valve connecting rod are both hinged to the second rotating shaft.

[0018] The system comprises a first locking link, a second locking link, and a fifth rotating shaft. One end of the first locking link is hinged to the second rotating shaft. One end of the second locking link is hinged to the side wall of the first locking link away from the second rotating shaft. The other end of the second locking link passes through the side wall of the fifth rotating shaft and moves on the drain side wall of the baffle. Both ends of the fifth rotating shaft are respectively hinged to two second rotating shaft seats. A blocking member is fixed to the other end of the first locking link. When the first locking link and the second locking link rotate to form a straight line, the blocking member can abut against the bottom of the second locking link.

[0019] A push-pull rod, one end of which is hinged to the side wall of the second locking link near the first locking link, and the other end of which is hinged to the other end of the second control rod.

[0020] Preferably, the hydraulic floating delay control mechanism includes:

[0021] A through rod, one end of which is hinged to the other end of the first control rod;

[0022] A float, which is connected to the upper part of the side wall of the through rod;

[0023] The time-delay water tank is connected to the lower side wall of the through rod. The top and bottom of the time-delay water tank are respectively provided with vent holes and water holes, and the vent holes are provided with air valves.

[0024] Preferably, the upper side wall of the through rod is provided with external threads, the float is provided with a first through hole, both ends of the first through hole are fixed with nuts, the through rod passes through the first through hole, and the two nuts are threadedly connected to the external threads.

[0025] Preferably, the interior of the time-delay water tank is provided with a second through hole, the through rod passes through the second through hole, and the other end of the through rod is fixedly connected to a limiting boss, the diameter of the limiting boss being larger than the diameter of the second through hole.

[0026] Preferably, there are two of each of the first control rod and the hydraulic floating delay control mechanism, with the two first control rods arranged on both sides of the second control rod.

[0027] Preferably, the baffle includes an intermediate baffle and two side baffles, the two side baffles are respectively connected to the two side walls of the intermediate baffle, the bottom of the intermediate baffle is provided with a semi-circular groove, and the outer side wall of the valve cylinder is fixed in the semi-circular groove.

[0028] This invention provides a valve device that automatically opens and closes using hydraulic power. Its advantages are as follows: the edge wall of the baffle of the valve device is used to adhere to the inner wall of the sewage well, and the outer wall of the valve cylinder is used to adhere to the bottom guide channel of the sewage well. The hydraulic automatic opening and closing linkage mechanism can delay the opening of the valve cover under the gravity of the hydraulic floating delay control mechanism. During this delay, a preset amount of incoming water will accumulate to a certain height in the sewage well on the water-incoming side of the baffle. Under the driving action of hydraulic power, the hydraulic automatic opening and closing linkage mechanism will drive the valve cover to open. At this time, the incoming water will be discharged rapidly, causing the water flow to form a pulsating impact, thereby achieving the effect of impacting the sediment in the downstream pipe and preventing obstruction of water flow. This valve device uses the existing incoming water as a power source for operation, requiring no additional power input. It operates completely automatically without human intervention, and the overall structure is simple, robust, and highly reliable.

[0029] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0030] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0031] Figure 1 A three-dimensional structural diagram of a valve device that automatically opens and closes using hydraulic power, according to an embodiment of the present invention, is shown. Figure 1 ;

[0032] Figure 2 A three-dimensional structural diagram of a valve device that automatically opens and closes using hydraulic power, according to an embodiment of the present invention, is shown. Figure 2 ;

[0033] Figure 3 A cross-sectional schematic diagram of a float and a time-delay water tank of a valve device that automatically opens and closes by hydraulic power according to an embodiment of the present invention is shown.

[0034] Figure 4 A side view of the valve cover structure of a valve device that automatically opens and closes by hydraulic power according to an embodiment of the present invention is shown.

[0035] Figure 5 A partial side view of a hydraulic automatic opening and closing linkage mechanism of a valve device that relies on hydraulic power to automatically open and close, according to an embodiment of the present invention, is shown.

[0036] Figure 6 A schematic diagram of the structure of a valve device that automatically opens and closes by hydraulic power according to an embodiment of the present invention is shown when the baffle intercepts incoming water.

[0037] Figure 7 A schematic diagram of the structure of a time-delay water tank of a valve device that automatically opens and closes by hydraulic power according to an embodiment of the present invention is shown when the tank is submerged;

[0038] Figure 8 A schematic diagram of the structure of a valve device that automatically opens and closes by hydraulic power according to an embodiment of the present invention is shown when the float rises.

[0039] Figure 9 A schematic diagram of the valve cover of a valve device that automatically opens and closes by hydraulic power according to an embodiment of the present invention is shown when the valve cover is open;

[0040] Figure 10 A schematic diagram of the valve cover of a valve device that automatically opens and closes by hydraulic power according to an embodiment of the present invention is shown when the valve cover is closed with a delay.

[0041] Figure 11 A schematic diagram of the valve cover of a valve device that automatically opens and closes by hydraulic power according to an embodiment of the present invention is shown when the valve cover gradually closes.

[0042] Figure 12 A schematic diagram of the valve cover of a valve device that automatically opens and closes by hydraulic power according to an embodiment of the present invention is shown when the valve cover is closed.

[0043] Figure 13 A schematic diagram of a hydraulically operated valve device according to an embodiment of the present invention, when installed in a sewage well, is shown. Figure 1 ;

[0044] Figure 14 A schematic diagram of a hydraulically operated valve device, according to an embodiment of the present invention, is shown when installed in a sewage well. Figure 2 .

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Control lever shaft; 2. Second control lever; 3. Second shaft seat; 4. Push-pull rod; 5. Second locking link; 6. First shaft seat; 7. First locking link; 8. Second valve link; 9. First valve link; 10. Valve support arm; 11. Valve cover plate; 12. First control lever; 13. Intermediate baffle; 14. Side baffle; 15. Float; 16. Through rod; 17. Air valve; 18. Delay water tank; 19. Valve gland; 20. Valve cylinder; 21. Valve sealing plate; 22. Sewage well; 23. Guide channel. Detailed Implementation

[0047] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0048] like Figure 1 , Figure 2 , Figure 13 and Figure 14 As shown, the present invention provides a valve device that automatically opens and closes using hydraulic power, the valve device comprising:

[0049] The valve body 20 and valve cover are provided. The valve body 20 is located at the bottom of the valve body 20, and the valve cover is movably located inside the valve body 20. The edge wall of the valve body 20 is used to be fixed to the inner wall of the sewage well 22, and the outer wall of the valve body 20 is used to be fixed to the bottom guide groove 23 of the sewage well 22.

[0050] Control lever shaft 1 is rotatably connected to the top of the baffle;

[0051] At least one first control lever 12 and at least one hydraulic floating delay control mechanism, one end of the first control lever 12 is fixedly connected to the control lever shaft 1, and the other end of the first control lever 12 is located on the water inlet side of the baffle and connected to the hydraulic floating delay control mechanism;

[0052] The second control lever 2 and the hydraulic automatic opening and closing linkage mechanism are connected. One end of the second control lever 2 is fixed to the control lever shaft 1, and the other end of the second control lever 2 is set on the water outlet side of the baffle and is hinged to one end of the hydraulic automatic opening and closing linkage mechanism. The other end of the hydraulic automatic opening and closing linkage mechanism is connected to the valve cover. The hydraulic automatic opening and closing linkage mechanism can delay the opening of the valve cover under the gravity of the hydraulic floating delay control mechanism, thereby accumulating a preset amount of incoming water on the water inlet side of the baffle.

[0053] Specifically, to address the issue that in urban drainage systems, when water flow is slow, larger particles tend to accumulate at the bottom of the pipes, causing sediment buildup and hindering water flow, this invention provides a hydraulically operated valve device that automatically opens and closes. The valve device's baffle edge is attached to the inner wall of the sewage well 22, and the outer wall of the valve cylinder 20 is attached to the bottom guide channel 23 of the sewage well 22. The hydraulically operated automatic opening and closing linkage mechanism, under the gravity of the hydraulically floating delay control mechanism, causes the valve cover to open with a delay. During this delay, a preset amount of incoming water accumulates to a certain height in the sewage well on the side of the baffle. Driven by the water, this water is used to open the valve cover via the hydraulically operated automatic opening and closing linkage mechanism. At this time, the incoming water is rapidly discharged, creating a pulsating impact that effectively removes sediment from downstream pipes, preventing obstruction of water flow. This valve device utilizes existing incoming water as its power source, requiring no additional power input. It operates fully automatically without human intervention, and its overall structure is simple, robust, and highly reliable.

[0054] like Figure 4 As shown, preferably, the valve cover includes a valve cover plate 11, a valve sealing plate 21, and a valve gland 19. The valve sealing plate 21 is fixed between the valve cover plate 11 and the valve gland 19, and the outer circumferential side of the valve sealing plate 21 can fit and seal against the inner wall of the valve cylinder 20.

[0055] The diameter of the valve sealing plate 21 is greater than the diameter of the valve cover plate 11, the inner diameter of the valve body 20, and the diameter of the valve gland 19.

[0056] Specifically, the valve cover serves to allow water to pass through and stop the valve body 20. When the valve is closed, the outer circumference of the valve sealing plate 21 contacts and seals against the inner wall of the valve body 20, preventing water from passing through the valve body 20. During the opening and closing of the valve cover, the valve sealing plate 21 scrapes away foreign matter adhering to the inner wall of the valve body 20, ensuring the cleanliness of the sealing surface. The diameter of the valve sealing plate 21 is larger than that of the valve cover plate 11, slightly larger than that of the inner diameter of the valve body 20, and much larger than that of the valve gland 19, giving the valve sealing plate 21 a certain deformation margin. This allows the valve sealing plate 21 to have a certain amount of movement when the valve is closed. Furthermore, the pressure of the water after water storage acts on the valve sealing plate 21, enhancing its sealing performance. At the same time, this deformation margin can also help maintain the sealing effect by deforming and wrapping the foreign matter at the interface between the valve sealing plate 21 and the inner wall of the valve body 20.

[0057] Preferably, the valve device further includes:

[0058] Two first rotating shaft seats 6 are symmetrically fixed to the middle of the drain side wall of the baffle;

[0059] Two valve support arms 10 are triangular in shape. One corner of each valve support arm 10 is hinged to the first rotating shaft between the two first rotating shaft seats 6. One side of each valve support arm 10 is fixed to the valve cover.

[0060] Two second rotating shaft seats 3 are symmetrically fixed to the upper part of the drain side wall of the baffle.

[0061] Specifically, the second rotating shaft seat 3, the first rotating shaft seat 6, and the valve cylinder 20 are rigidly connected to the baffle. The edge wall of the baffle is fixed to the inner wall of the sewage well 22, and the outer wall of the valve cylinder 20 is fixed to the bottom guide groove 23 of the sewage well 22, providing a force-bearing base for each moving mechanism.

[0062] One corner of each valve arm 10 is hinged to a first rotating shaft between two first rotating shaft seats 6. One side of each valve arm 10 is fixed to the valve cover. The valve rotates up and down around the hinge point to allow water to pass through and stop from the valve body 20.

[0063] like Figure 5 As shown, preferably, the hydraulic automatic opening and closing linkage mechanism includes:

[0064] The first valve connecting rod 9, the second valve connecting rod 8, and the second rotating shaft are connected together. One end of the first valve connecting rod 9 is hinged to the third rotating shaft between the other corner ends of the two valve arms 10. One end of the second valve connecting rod 8 is hinged to the fourth rotating shaft between the two second rotating shaft seats 3. The other ends of the first valve connecting rod 9 and the other ends of the second valve connecting rod 8 are both hinged to the second rotating shaft.

[0065] The first locking link 7, the second locking link 5, and the fifth rotating shaft are connected as follows: one end of the first locking link 7 is hinged to the second rotating shaft; one end of the second locking link 5 is hinged to the side wall of the first locking link 7 away from the second rotating shaft; the other end of the second locking link 5 passes through the side wall of the fifth rotating shaft and moves on the drain side wall of the baffle; both ends of the fifth rotating shaft are respectively hinged to the two second rotating shaft seats 3; the other end of the first locking link 7 is fixedly connected to a blocking member; when the first locking link 7 and the second locking link 5 rotate to form a straight line, the blocking member can abut against the bottom of the second locking link 5.

[0066] Push-pull rod 4, one end of which is hinged to the side wall of the second locking link 5 near the first locking link 7, and the other end of which is hinged to the other end of the second control rod 2.

[0067] Specifically, when the valve cover is closed, water is blocked on the inlet side of the baffle. At the same time, the force of water pressure acting on the valve cover is transmitted through the valve support arm 10 to the first valve link 9 and the second valve link 8. At this time, the first valve link 9 and the second valve link 8 are in a straight line with no outward force. All forces are transmitted to the fixed second pivot seat 3, and the valve cover cannot be opened. In addition, the first locking link 7 and the second locking link 5, which are also in a straight line, ensure that the first valve link 9 and the second valve link 8 remain in a straight line. The weight of the hydraulic floating delay control mechanism is converted into an upward pulling force through the first control rod 12, the control rod pivot 1, the second control rod 2, and the push-pull rod 4. This pulls the second locking link 5 so that the first locking link 7 and the second locking link 5 do not bend downward. At the same time, the blocking part on the first locking link 7 ensures that the first locking link 7 and the second locking link 5 do not bend upward, thereby ensuring that the first locking link 7 and the second locking link 5 remain in a straight line, thus ensuring that the valve cover will not open and forming a locked state.

[0068] like Figure 3 As shown, preferably, the hydraulic floating delay control mechanism includes:

[0069] A through rod 16, one end of which is hinged to the other end of the first control rod 12;

[0070] Float 15 is connected to the upper side wall of the through rod 16;

[0071] The time-delay water tank 18 is connected to the lower side wall of the through rod 16. The top and bottom of the time-delay water tank 18 are respectively provided with vent holes and water holes, and the vent holes are provided with air valves 17.

[0072] The upper side wall of the through rod 16 is provided with external threads, the float 15 is provided with a first through hole, and nuts are fixed at both ends of the first through hole. The through rod 16 passes through the first through hole, and the two nuts are threadedly connected to the external threads.

[0073] The interior of the time-delay water tank 18 is provided with a second through hole, through which the through rod 16 passes. The other end of the through rod 16 is fixed with a limiting boss, the diameter of which is larger than the diameter of the second through hole.

[0074] Specifically, the float 15, the time-delay water tank 18, the air valve 17, and the through rod 16 are combined to form a hydraulic floating time-delay control mechanism. The mechanism provides the downward pressure on the first locking link 7 and the second locking link 5 when the valve cover is opened, the upward force on the first locking link 7 and the second locking link 5 when the valve cover is closed with a time delay, and the upward force on the first locking link 7 and the second locking link 5 when the valve cover is closed.

[0075] The through rod 16 passes through both the first through hole of the float 15 and the second through hole of the delay water tank 18, connecting them in series. This allows the float 15 and the delay water tank 18 to move up and down. One end of the through rod 16 is hinged to the other end of the first control rod 12. The upper part of the side wall of the through rod 16 is provided with external threads, which are screwed to the upper and lower nuts of the float 15. By adjusting the position of the upper and lower nuts, the height of the float 15 can be changed, thereby adjusting the liquid level height when the valve is opened. The bottom end of the through rod 16 is a limiting boss with a diameter larger than the second through hole, which prevents the delay water tank 18 from falling off the through rod 16 and transmits the weight of the delay water tank 18.

[0076] The time-delay water tank 18 has vent holes at its top and water holes at its bottom. As the water level rises and submerges the time-delay water tank 18, water enters through the water holes and is released through the vent holes to fill the tank. At this time, because the tank is filled with water of the same density as the outside water, the total weight of the tank is equal to its empty weight, and it does not significantly counteract the buoyancy of the float 15. When the water level drops below the tank, the total weight of the tank is equal to its empty weight plus... The weight of the water inside the water tank acts as a weight, which is transmitted upward through the through rod 16 to control the delayed closing of the valve cover. At the same time, after the water tank 18 leaves the water surface, the water flows out from the water vent of the water tank 18. The amount of air released from the vent determines the time it takes for the water inside the water tank 18 to be emptied. By adjusting the air valve 17 installed in the vent, the length of time it takes for the water inside the water tank 18 to be emptied can be adjusted, thus achieving an adjustable delay function.

[0077] Preferably, there are two first control levers 12 and two hydraulic floating delay control mechanisms, with the two first control levers 12 arranged on both sides of the second control lever 2.

[0078] Preferably, the baffle includes an intermediate baffle 13 and two side baffles 14. The two side baffles 14 are respectively connected to the two side walls of the intermediate baffle 13. The bottom of the intermediate baffle 14 is provided with a semi-circular groove, and the outer side wall of the valve cylinder 20 is fixed in the semi-circular groove.

[0079] Specifically, the intermediate baffle 13, the two side baffles 14, and the valve cylinder 20 are combined to form a water-blocking wall, which can block water on the incoming water side and control the incoming water to only pass through the valve cylinder 20.

[0080] In summary, when the valve device provided by this invention, which relies on hydraulic power for automatic opening and closing, is implemented, as follows: Figure 6The water inflow direction is towards the float 15 side. At this time, the valve cover is closed, and the water is intercepted on the float 15 side. As the water accumulates, it gradually submerges the delay water tank 18, and water begins to fill the delay water tank 18. Simultaneously, the force of the water pressure acting on the valve cover is transmitted through the valve support arm 10 to the first valve connecting rod 9 and the second valve connecting rod 8. At this time, the first valve connecting rod 9 and the second valve connecting rod 8 are in a straight line with no outward force. All forces are transmitted to the fixed second rotating shaft seat 3, preventing the valve cover from opening. Furthermore, the first locking connecting rod 7 and the second locking connecting rod 5, which are also in a straight line, ensure the first... Valve connecting rod 9 and second valve connecting rod 8 remain in a straight line. The weight of the hydraulic floating delay control mechanism is converted into an upward pulling force through the first control rod 12, control rod shaft 1, second control rod 2, and push-pull rod 4, which pulls the second locking connecting rod 5 so that the first locking connecting rod 7 and the second locking connecting rod 5 do not bend downward. At the same time, the blocking part on the first locking connecting rod 7 can ensure that the first locking connecting rod 7 and the second locking connecting rod 5 do not bend upward, thereby ensuring that the first locking connecting rod 7 and the second locking connecting rod 5 remain in a straight line, thus ensuring that the valve cover will not open and forming a locked state.

[0081] like Figure 7 As shown, the water level continues to rise, submerging the delay tank 18. The interior of the delay tank 18 is filled with water, and the water level rises to the position of the float 15. The float 15 begins to generate buoyancy. The lift force after subtracting the weight of the hydraulic floating delay control mechanism from the buoyancy is converted into downward pressure on the first locking link 7 and the second locking link 5. When the downward pressure is insufficient to bend the first locking link 7 and the second locking link 5, the valve cover will not open, and the water level continues to rise.

[0082] like Figure 8 As shown, as the water level rises, the downward pressure generated by the lift of the float 15 is sufficient to bend the first locking link 7 and the second locking link 5 downwards, but not enough to cause the first locking link 7 and the second locking link 5 to reach the state of instability. That is, the component force transmitted by the water pressure is insufficient to cause the first locking link 7 and the second locking link 5 to continue to bend. The valve cover is only opened slightly, while the valve sealing plate 21 is still inside the valve body 20. The outer circumference of the valve sealing plate 21 and the inner wall of the valve body 20 still have a reliable seal, so the water will not leak, and the water level continues to rise.

[0083] like Figure 9As shown, when the water level rises to the point where the downward pressure generated by the lift of the float 15 causes the first locking link 7 and the second locking link 5 to bend to a certain extent, the component force transmitted by the water pressure is sufficient to cause the first locking link 7 and the second locking link 5 to continue bending. The first locking link 7 and the second locking link 5 experience bar instability, and the bending angle increases sharply. At the same time, this causes the first valve link 9 and the second valve link 8 to also experience bar instability. The resistance of the hydraulic automatic opening and closing linkage mechanism on the valve cover quickly becomes less than the pressure of the water on the valve cover, and the original stable state immediately... When the valve is broken, the valve cover flips upward and opens, allowing the accumulated water to flow out rapidly from the valve cylinder 20. The rapidly flowing water impacts the valve cover, keeping it open. Simultaneously, the force generated by the rapidly opening valve cover is transmitted to the through rod 16, causing it to move rapidly downward. Due to inertia, the through rod 16 quickly passes through the delay water tank 18, which then slowly falls. This reduces the obstruction to the movement of the through rod 16, ensuring smooth valve opening and minimizing the impact force that could damage the entire device during valve opening.

[0084] like Figure 10 As shown, as the valve cover opens, the water level drops rapidly. When the water level drops below the delay tank 18, the total weight of the hydraulic floating delay control mechanism plus the water inside the delay tank 18, through the power transmission of the first control rod 12, control rod shaft 1, second control rod 2, and push-pull rod 4, generates an upward pulling force on the first locking link 7 and the second locking link 5 that is greater than the downward pressure generated by the valve cover's own weight on the first locking link 7 and the second locking link 5. This controls the valve cover to remain open, while the water in the delay tank 18 begins to overflow from the water inlet. The total weight of the hydraulic floating delay control mechanism gradually decreases until the total weight acting on the first locking link 7 and the second locking link 5 is less than the valve cover's own weight. At this point, the valve cover will close downwards, and the flow rate of the overflowing water is controlled by the opening angle of the vent valve 17, which in turn controls the time the valve cover remains open.

[0085] like Figure 11 As shown, as the water inside the delay tank 18 gradually flows out, the upward pulling force acting on the first locking link 7 and the second locking link 5 is less than the downward pressure generated by the weight of the valve cover. The valve cover gradually closes. According to the entire operating path of the hydraulic automatic opening and closing linkage mechanism, when the downward bending angle of the first locking link 7 and the second locking link 5 reaches its maximum, it is the critical point of tension-pressure conversion. That is, the upward pulling force of the total weight of the hydraulic floating delay control mechanism acting on the first locking link 7 and the second locking link 5 will change from preventing the valve cover from closing to assisting the valve cover in closing. After this critical point, the force for closing the valve cover will be greatly increased, and the valve cover will close quickly. The resulting impulse greatly increases the success rate of valve cover closing. Even if the valve cover does not close successfully, the strong horizontal component of the upward pulling force generated by the weight of the hydraulic floating delay control mechanism on the first locking link 7 and the second locking link 5 can also close the valve cover to the locked state.

[0086] like Figure 12 As shown, with the valve cover closed, the first valve link 9 and the second valve link 8 are all in a straight line with the first locking link 7 and the second locking link 5. The lifting force exerted by the self-weight of the hydraulic floating delay control mechanism on the first locking link 7 and the second locking link 5 ensures that the valve cover is locked. Thus, one valve opening and closing cycle is completed.

[0087] The valve device uses the existing incoming water as a power source to drive its operation without additional power input. It operates fully automatically without human intervention, has a simple and robust overall structure, and is highly reliable. Furthermore, when installed in the sewage well, the guide channel 23 does not need to be removed, thus reducing the installation time.

[0088] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A valve device that automatically opens and closes using hydraulic power, characterized in that, The valve device includes: The system comprises a baffle, a valve cylinder, and a valve cover. The valve cylinder is disposed at the bottom of the baffle, and the valve cover is movably disposed within the valve cylinder. The edge wall of the baffle is fixed to the inner wall of the sewage well, and the outer wall of the valve cylinder is fixed to the bottom guide groove of the sewage well. A control lever shaft is rotatably connected to the top of the baffle. At least one first control rod and at least one hydraulic floating delay control mechanism, one end of the first control rod is fixed to the control rod shaft, and the other end of the first control rod is disposed on the water inlet side of the baffle and connected to the hydraulic floating delay control mechanism; The second control rod and the hydraulic automatic opening and closing linkage mechanism are as follows: one end of the second control rod is fixed to the control rod shaft, and the other end of the second control rod is located on the water outlet side of the baffle and is hinged to one end of the hydraulic automatic opening and closing linkage mechanism. The other end of the hydraulic automatic opening and closing linkage mechanism is connected to the valve cover. The hydraulic automatic opening and closing linkage mechanism can cause the valve cover to open after a delay under the gravity of the hydraulic floating delay control mechanism, thereby accumulating a preset amount of incoming water on the water inlet side of the baffle. The valve assembly also includes: Two first rotating shaft seats are symmetrically fixed to the middle of the drain side wall of the baffle. Two valve arms, each valve arm being triangular in shape, with one corner of each valve arm hinged to a first rotating shaft between two first rotating shaft seats, and one side of each valve arm fixed to the valve cover. Two second rotating shaft seats are symmetrically fixed to the upper part of the drain side wall of the baffle. The hydraulic automatic opening and closing linkage mechanism includes: A first valve connecting rod, a second valve connecting rod, and a second rotating shaft. One end of the first valve connecting rod is hinged to a third rotating shaft between the other corner ends of the two valve arms. One end of the second valve connecting rod is hinged to a fourth rotating shaft between the two second rotating shaft seats. The other ends of the first valve connecting rod and the other ends of the second valve connecting rod are both hinged to the second rotating shaft. The system comprises a first locking link, a second locking link, and a fifth rotating shaft. One end of the first locking link is hinged to the second rotating shaft. One end of the second locking link is hinged to the side wall of the first locking link away from the second rotating shaft. The other end of the second locking link passes through the side wall of the fifth rotating shaft and moves on the drain side wall of the baffle. Both ends of the fifth rotating shaft are respectively hinged to two second rotating shaft seats. A blocking member is fixed to the other end of the first locking link. When the first locking link and the second locking link rotate to form a straight line, the blocking member can abut against the bottom of the second locking link. A push-pull rod, one end of which is hinged to the side wall of the second locking link near the first locking link, and the other end of which is hinged to the other end of the second control rod.

2. The valve device for automatic opening and closing by hydraulic power according to claim 1, characterized in that, The valve cover includes a valve cover plate, a valve sealing plate, and a valve gland. The valve sealing plate is fixed between the valve cover plate and the valve gland, and the outer circumferential side of the valve sealing plate can fit and seal against the inner wall of the valve cylinder.

3. A valve device that automatically opens and closes using hydraulic power according to claim 2, characterized in that, The diameter of the valve sealing plate is greater than the diameter of the valve cover plate, the inner diameter of the valve cylinder, and the diameter of the valve gland.

4. The valve device for automatic opening and closing by hydraulic power according to claim 1, characterized in that, The hydraulic floating delay control mechanism includes: A through rod, one end of which is hinged to the other end of the first control rod; A float, which is connected to the upper part of the side wall of the through rod; The time-delay water tank is connected to the lower side wall of the through rod. The top and bottom of the time-delay water tank are respectively provided with vent holes and water holes, and the vent holes are provided with air valves.

5. A valve device that automatically opens and closes using hydraulic power according to claim 4, characterized in that, The upper side wall of the through rod is provided with external threads, the float is provided with a first through hole, and nuts are fixed at both ends of the first through hole. The through rod passes through the first through hole, and the two nuts are threadedly connected to the external threads.

6. A valve device for automatic opening and closing by hydraulic power according to claim 4, characterized in that, The interior of the time-delay water tank is provided with a second through hole, through which the through rod passes. The other end of the through rod is fixed to a limiting boss, the diameter of which is larger than the diameter of the second through hole.

7. A valve device for automatic opening and closing by hydraulic power according to claim 1, characterized in that, There are two of each of the first control rod and the hydraulic floating delay control mechanism, with the two first control rods positioned on either side of the second control rod.

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