Gate speed adjusting and height adjusting device

Abstract

The invention discloses a gate speed adjusting and height adjusting device, which relates to the technical field of gates, and comprises a dam body, a plurality of groups of gate bodies arranged on the dam body, a hydraulic cylinder for controlling the gate bodies to open and close, and a hydraulic station for controlling the hydraulic cylinder to operate, the hydraulic station comprises a shell, a top cover installed on the top of the shell, an oil return head and an oil pump, the oil return head and the oil pump are arranged on the top cover, a filter element is arranged outside the oil pump, and a cleaning mechanism is arranged inside the shell. Through the designed cleaning mechanism, the outer walls of the oil return head and the filter element are vertically brushed away through a small ring brush and a large ring brush, the bottoms of the oil return head and the filter element are transversely brushed away in cooperation with a lower plate brush, dead-corner-free cleaning of the outer walls and the bottoms is achieved, and impurity-containing hydraulic oil generated through cleaning enters the box body through a communicating pipe and is filtered through a filter screen, and then the oil return head and the filter element are cleaned. Clean oil returns into the shell through the return pipe to form a closed loop of cleaning, filtering and backflow, and the covering and blocking probability that impurities are attached to the outer surfaces of the oil return head and the filter element is also reduced.

Description

Technical Field

[0001] This invention belongs to the field of gate technology, specifically a gate speed and height adjustment device. Background Technology

[0002] In water conservancy projects, dam gates are core facilities for regulating water resources, ensuring flood control and irrigation, and maintaining smooth navigation. The precision of their opening and closing directly affects the flood control safety of the basin, the efficiency of water resource utilization, and the stability of project operation. The gate's movement is usually driven by a hydraulic cylinder—the extension and retraction of the hydraulic cylinder piston rod drives the gate to rotate around its axis, thereby changing the relative opening of the gate and the sluice gate to regulate the flow rate. The operating speed of the hydraulic cylinder is precisely controlled by a hydraulic station: the hydraulic station adjusts the oil supply flow and pressure to change the extension and retraction rate of the hydraulic cylinder's working end, ultimately achieving fine control of the gate's opening amplitude. This speed and height adjustment mechanism plays a crucial role when the gate needs to be opened quickly for flood discharge during flood season, when the water level needs to be adjusted slowly during dry season, or when a specific opening needs to be maintained stably during navigation periods. The existing hydraulic system of the gate operates as follows: the oil pump of the hydraulic station draws oil from the oil tank, pressurizes it, and delivers it to the rodless chamber of the hydraulic cylinder through the oil pipe, driving the piston rod to extend (and opening the gate); when the gate is closed, the oil in the rod chamber of the hydraulic cylinder flows back to the oil tank through the hydraulic pipe and the return oil head in the oil tank, and the piston rod retracts under the action of oil pressure (and opens the gate). To prevent impurities from entering the hydraulic pipeline, the oil pump suction port is usually equipped with a filter element to filter impurities in the oil. In existing technologies, impurities inevitably accumulate in the oil tank (such as metal shavings from hydraulic component wear and rubber particles from aging seals flowing back into the tank). These impurities tend to accumulate in two key areas: first, they adhere to the outer wall of the oil pump's filter element. As impurities accumulate, the flow area of ​​the filter element gradually decreases, leading to insufficient oil suction and fluctuations in the piston rod extension speed; second, they cover the outer wall of the return oil head, hindering the smooth flow of return oil and causing the piston rod to bear additional back pressure when it retracts, resulting in delayed or jammed gate closure. Both situations will disrupt the stability of the hydraulic cylinder's operation, leading to a decrease in the adjustment accuracy of the gate opening speed increase or decrease, thus reducing the stability of gate control. To address this, we propose a gate speed and height adjustment device. Summary of the Invention

[0003] The purpose of this invention is to provide a gate speed and height adjustment device to solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a gate speed and height regulating device, comprising a dam body, multiple sets of gate bodies installed on the dam body, hydraulic cylinders for controlling the opening and closing of the gate bodies, and a hydraulic station for controlling the operation of the hydraulic cylinders. The hydraulic station includes a housing, a top cover installed on the top of the housing, and an oil return head and an oil pump installed on the top cover. A filter element is installed outside the oil pump, and a cleaning mechanism is installed inside the housing. The cleaning mechanism includes: Small and large ring brushes, fitted on the outside of the oil return head and filter element, are used to clean impurities on the outer wall of the oil return head and filter element. The bottom of both the oil return head and the filter element is equipped with a lower plate brush for cleaning impurities at the bottom of the oil return head and the filter element. A housing is provided on one side of the housing, and a filter screen is provided inside the housing for filtering hydraulic oil containing impurities. An electric push rod is fixedly installed on the top of the top cover, which is used to drive the small ring brush, the large ring brush and the two sets of lower plate brushes to move.

[0005] Preferably, an upper inclined plate is fixedly provided on one side of both the small ring brush and the large ring brush, and a lower inclined plate is fixedly provided on one side of both the lower plate brush. A fixing block is fixedly installed on the other side of the small ring brush. A concave plate is slidably installed inside the fixing block. A side plate is fixedly installed on the side of the upper inclined plate. A connecting spring is fixedly installed between the side plate and the bottom of the concave plate.

[0006] Preferably, the bottom of the top cover is fixedly provided with multiple sets of limiting rods to limit the movement of the small ring brush and the large ring brush during vertical lifting.

[0007] Preferably, a recess is fixedly provided on the inner wall of the housing, and two sets of sliding grooves are provided inside the recess. An extension plate is fixedly provided on the other side of the lower brush, and a compression spring is fixedly provided between the end of the extension plate and the inner wall of the sliding groove.

[0008] Preferably, a top cover is fixedly provided on the top of the box, a connecting pipe is fixedly provided between the box and the shell, and a return pipe is provided between the box and the shell.

[0009] Preferably, the housing is provided with a cleaning component for cleaning impurities adhering to the surface of the filter screen, the cleaning component comprising: The vibration motor is installed on the top of the cover, and two sets of tube supports are fixedly installed at the bottom of the vibration motor. T-shaped columns are slidably installed inside the tube supports.

[0010] Preferably, the inside of the pipe rack is connected to a locking screw via a thread; A vibration-damping rubber ring is fixedly installed inside the upper cover; The inside of the top cover is also equipped with multiple sets of nozzles for rinsing impurities on the surface of the filter screen, and a water pipe is fixedly installed on one side of the box. The water pipe has a connector on its side.

[0011] Preferably, two sets of baffles and partitions are fixedly installed inside the box, an upper solenoid valve is embedded inside the baffle, two sets of lower solenoid valves are embedded inside the box, and a collection chamber is also provided inside the box; Two sets of inclined tubes are fixedly installed between the other side of the box and the return pipe, and a rubber plug is installed inside one end of the inclined tube.

[0012] Preferably, a T-shaped screw is threadedly connected to the inside of the recess, and a push plate is fixedly provided at the working end of the T-shaped screw, while the other end of the T-shaped screw extends to the outer surface of the housing.

[0013] Preferably, the dam body is rotatably connected to multiple sets of outriggers via a rotating shaft, and the bottom of each outrigger is provided with multiple sets of pontoons. The hydraulic cylinder and the hydraulic station are connected via hydraulic pipes.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) The present invention uses a designed cleaning mechanism to vertically brush the outer walls of the return oil head and filter element with small and large ring brushes, and horizontally brush the bottom of both with the lower plate brush, so as to achieve a thorough cleaning of the outer walls and bottom without dead angles. The hydraulic oil containing impurities generated during cleaning enters the housing through the connecting pipe, and after being filtered by the filter screen, the clean oil returns to the housing through the return pipe, forming a closed loop of cleaning, filtering and return. This also reduces the probability of impurities adhering to the outer surface of the return oil head and filter element and covering and clogging, and improves the stability of the gate body during speed adjustment and height adjustment.

[0015] (2) The present invention uses a designed cleaning component. The vibration force generated by the vibration motor is transmitted to the filter screen through the pipe rack and T-shaped column. The high-frequency vibration shakes off the impurities attached to the surface of the filter screen. Combined with the cleaning water sprayed from the nozzle, the residual impurities on the surface of the filter screen are rinsed, avoiding the reduction of oil flow caused by the blockage of the filter screen pores. One set of filter screens can be cleaned separately, and the other filter screen can be cleaned after cleaning. This allows the hydraulic station to clean without stopping the machine during the cleaning of the return oil head, the external impurities of the filter element and the impurities on the surface of the filter screen. It also enables the normal filtration of hydraulic oil containing impurities during the cleaning of the filter screen surface, improving the stability of the gate speed adjustment.

[0016] (3) The present invention combines a T-shaped screw and a push plate to compress the spring after long-term use (especially under high-frequency cleaning action), which will cause the spring force to decrease due to metal fatigue. This will result in insufficient contact pressure between the lower brush and the oil return head and the bottom of the filter element, resulting in cleaning residue. When the T-shaped screw rotates, it can push the push plate to move laterally and directly compress the spring, artificially increasing its preload and restoring the spring force to the design value, thus extending the service life of the spring and reducing the replacement frequency. Attached Figure Description

[0017] Figure 1 This is a top view of the dam structure of the present invention; Figure 2 This is a top view of the pontoon structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the AA structure; Figure 4 This is a schematic diagram of the dam-raising state structure of the present invention; Figure 5 This is a front sectional view of the hydraulic station and housing of the present invention; Figure 6 This is a schematic diagram of the oil return head and filter element structure of the present invention; Figure 7 This is a schematic diagram of the concave block structure of the present invention; Figure 8 This is a schematic cross-sectional view of the concave block structure of the present invention; Figure 9 This is a top view schematic diagram of the small ring brush and large ring brush of the present invention; Figure 10 This is a schematic cross-sectional view of the box structure of the present invention; Figure 11 For the present invention Figure 10 Enlarged structural diagram of section A in the middle; Figure 12 This is a top view of the box structure of the present invention; In the diagram: 100, Dam body; 101, Hydraulic pipe; 102, Hydraulic station; 103, pontoon; 104, outrigger; 105, Hydraulic cylinder; 106, Solenoid valve; 107, Top cover; 108, Return oil head; 109, Shell; 110, Drive motor; 111, Oil pump; 112, Filter element; 113, Gate body; 200, Electric push rod; 201, Connecting pipe; 202, Small ring brush; 204, Top cover; 205, Box body; 206, Inclined pipe; 207, Return pipe; 209, Upper inclined plate; 210, Limiting rod; 211, Lower plate brush; 212. 213. Concave block; 214. Concave plate; 215. Lower inclined plate; 216. Connecting spring; 217. Movable square column; 218. Compression spring; 219. Large ring brush; 220. Filter screen; 300. Sealing rubber; 301. Collection chamber; 302. Lower solenoid valve; 303. Partition plate; 304. Baffle plate; 305. Upper solenoid valve; 306. Rubber plug; 307. Vibration motor; 308. Pipe rack; 309. Vibration damping rubber ring; 310. T-shaped column; 311. Locking screw; 312. Water pipe; 400. Nozzle; 401. Push plate. Detailed Implementation

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 Figure 5 , Figure 6 , Figure 7 , Figure 9 , Figure 10 ,and Figure 12 This invention provides a technical solution: a gate speed and height regulating device, including a dam body 100, multiple gate bodies 113 installed on the dam body 100, hydraulic cylinders 105 controlling the opening and closing of the gate bodies 113, and a hydraulic station 102 controlling the operation of the hydraulic cylinders 105. The hydraulic station 102 includes a housing 109, a top cover 107 installed on the top of the housing 109, and an oil return head 108 and an oil pump 111 installed on the top cover 107. A filter element 112 is installed outside the oil pump 111, and a cleaning mechanism is installed inside the housing 109. The cleaning mechanism includes: Small ring brush 202 and large ring brush 218, which are fitted on the outside of oil return head 108 and filter element 112, are used to clean impurities on the outer wall of oil return head 108 and filter element 112. Both the oil return head 108 and the filter element 112 are equipped with a lower plate brush 211, which is used to clean the impurities at the bottom of the oil return head 108 and the filter element 112. A housing 205 is provided on one side of the housing 109. A filter screen 219 is provided inside the housing 205 to filter hydraulic oil containing impurities. The hydraulic oil containing impurities generated during cleaning enters the housing 205 through the connecting pipe 201, and flows back into the housing 109 after being filtered by the filter screen 219. Both ends of the filter screen 219 are connected to the housing 205 through sealing rubber 220, which not only seals the filter screen 219 with the partition 302 and the inner wall of the housing 205, but also reduces vibration when the filter screen 219 vibrates. An electric push rod 200 is fixedly installed on the top of the top cover 107. The bottom working end of the electric push rod 200 is inserted into the interior of the housing 109 and fixedly connected to the upper inclined plate 209 located on the left side of the small ring brush 202. It is used to drive the small ring brush 202, the large ring brush 218 and the two sets of lower plate brushes 211 to move. An upper inclined plate 209 is fixedly installed on one side of the small ring brush 202 and the large ring brush 218, and a lower inclined plate 214 is fixedly installed on one side of the lower plate brush 211. The upper inclined plate 209 can contact the lower inclined plate 214. A fixing block is fixedly installed on the other side of the small ring brush 202. A concave plate 213 is slidably installed inside the fixing block. The top of the concave plate 213 is fixed to the top of the upper inclined plate 209. A side plate is fixedly installed on the side of the upper inclined plate 209. A connecting spring 215 is fixedly installed between the side plate and the bottom of the concave plate 213. When the small ring brush 202 and the large ring brush 218 move downward, the connecting spring 215 will be compressed. When the small ring brush 202 and the large ring brush 218 move upward, the connecting spring 215 will be reset. The bottom of the top cover 107 is fixedly provided with multiple sets of limiting rods 210, which are used to limit the small ring brush 202 and the large ring brush 218 when they move up and down. The bottom of the limiting rod 210 passes through the inside of the small ring brush 202 and the large ring brush 218. When the small ring brush 202 and the large ring brush 218 move up and down, the limiting rod 210 restricts their lateral displacement, ensuring that the two ring brushes are always fitted outside the oil return head 108 and the filter element 112, and preventing the two ring brushes from tilting due to vibration or uneven force.

[0020] Example 2 Please refer to Example 1. Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 12The inner wall of the housing 109 is fixedly provided with a recess 212. Two sets of sliding grooves are opened inside the recess 212. An extension plate is fixedly provided on the other side of the lower brush 211, and the end of the extension plate extends into the interior of the sliding groove. A compression spring 217 is fixedly provided between the end of the extension plate and the inner wall of the sliding groove. The recess 212 is also provided with two sets of limiting grooves. A movable square post 216 is slidably arranged inside the limiting groove to increase the stability of the extension plate when sliding. The end of the movable square post 216 is fixedly connected to the end of the extension plate. The movable square post 216 slides with the extension plate in the limiting groove to prevent the extension plate from tilting. After cleaning, the compression spring 217 is reset, which drives the lower brush 211 to return to its original position. A top cover 204 is fixedly installed on the top of the housing 205. A connecting pipe 201 is fixedly installed between the housing 205 and the shell 109. A one-way valve and a first delivery pump are respectively installed on the outside of the connecting pipe 201. The first delivery pump can pump the hydraulic oil entering the connecting pipe 201 to the housing 205. The one-way valve can prevent the hydraulic oil entering the housing 205 from flowing back into the shell 109. A return pipe 207 is installed between the housing 205 and the shell 109. A second delivery pump is installed on the outside of the return pipe 207. The second delivery pump delivers the filtered hydraulic oil in the return pipe 207 to the shell 109.

[0021] Example 3 Please refer to Example 2. Figures 5-12 The housing 205 is equipped with a cleaning component for cleaning impurities adhering to the surface of the filter screen 219. The cleaning component includes: The vibration motor 306, located on the top of the cover 204, vibrates and shakes off impurities adhering to the surface of the filter screen 219. Two sets of tube supports 307 are fixedly installed at the bottom of the vibration motor 306. T-shaped columns 309 are slidably installed inside the tube supports 307. The bottom of the T-shaped columns 309 contacts the top of the filter screen 219. Vibration cleaning can remove most of the adhering impurities on the surface of the filter screen 219 and prevent the filter screen 219 from becoming clogged, which would cause a decrease in flow rate. The pipe rack 307 is internally connected to a locking screw 310 via threads. Unscrewing the locking screw 310 allows the T-shaped post 309 at the corresponding position to descend and contact the top of one of the two filter screens 219 when cleaning it, thus vibrating and shaking off the attached impurities (while the other filter screen 219 normally filters the hydraulic oil containing impurities). At the same time, the nozzle 312 at this position is activated, spraying cleaning water through the nozzle 312 during the vibration of the filter screen 219 to wash off any remaining impurities. The working end of the locking screw 310 also contacts the T-shaped post 309. A vibration damping rubber ring 308 is fixedly installed inside the top cover 204. The vibration damping rubber ring 308 is located outside the T-shaped column 309. The vibration damping rubber ring 308 increases the sealing between the T-shaped column 309 and the top cover 204 and reduces vibration. A vibration damping seat is provided between the bottom of the vibration motor 306 and the top cover 204. The upper cover 204 is also equipped with multiple sets of nozzles 312 for rinsing the impurities on the surface of the filter screen 219. Two sets of water pipes 311 are fixedly installed on one side of the box 205. After rinsing, the impurities and cleaning liquid enter the collection chamber 300 through the lower solenoid valve 301 and are finally discharged outward through the discharge port. A connector is provided on the side of the water pipe 311, which is connected to an external water supply device. The water pipe 311 is connected to the nozzle 312. The housing 205 has two sets of baffles 303 and partitions 302 fixedly installed inside. The upper solenoid valve 304 is embedded inside the baffle 303. The baffle 303, the upper solenoid valve 304 and the inclined tube 206 work together to clean the impurities attached to the surface of one filter screen 219 while the impurities in the hydraulic oil mixed in the oil tank are cleaned through the other filter screen 219. This allows for continuous and non-stop cleaning of impurities on the surface of the filter screen 219, as well as cleaning of the return oil head 108 and the outer wall of the filter element 112. The housing 205 also has two sets of lower solenoid valves 301 embedded inside. The housing 205 also has a collection chamber 300 inside. The bottom of the housing 205 is fixedly provided with a discharge port. Two sets of inclined tubes 206 are fixedly installed between the other side of the housing 205 and the return pipe 207. A rubber plug 305 is installed inside one end of the inclined tube 206. When cleaning the surface impurities of one of the filter screens 219, the corresponding rubber plug 305 can be inserted and the corresponding inclined tube 206 can be blocked to prevent cleaning water from entering the return pipe 207 through the inclined tube 206.

[0022] Example 4 Please refer to Example 3. Figures 1-8 The interior of the recess 212 is connected to a T-shaped screw 400 via threads. The T-shaped screw 400 and the push plate 401 can compress the compression spring 217, which has become weak due to prolonged use, thereby increasing the elasticity of the compression spring 217 during use. This improves the cleaning effect of the lower brush 211 on the oil return head 108 and the bottom of the filter element 112, while also increasing the service life of the compression spring 217 and reducing the replacement frequency. The working end of the T-shaped screw 400 is fixedly equipped with the push plate 401, and the other end of the T-shaped screw 400 extends to the outer surface of the housing 205.

[0023] In this embodiment, multiple sets of support legs 104 are rotatably connected to the dam body 100 via a rotating shaft. The gate body 113 is fixed to the support legs 104. The bottom of the hydraulic cylinder 105 is rotatably connected to the dam body 100 via a rotating shaft. The drive motor 110 drives the oil pump 111 to draw oil from the housing 109, which is then delivered to the hydraulic cylinder 105 via the hydraulic pipe 101 and the solenoid valve 106. This drives the piston rod to extend and retract, causing the gate body 113 to rotate around the rotating shaft via the support legs 104. The working end of the hydraulic cylinder 105 is rotatably connected to the support legs 104 via a rotating shaft. Multiple sets of floats 103 are provided at the bottom of the support legs 104. The hydraulic cylinder 105 is connected to the hydraulic station 102. The gate body 113 is connected by a hydraulic pipe 101. The buoy 103 uses its buoyancy to offset most of the weight of the gate body 113, reducing the lifting and lowering force of the gate body 113 and reducing the internal stress of various components such as supports. This keeps the load on the gate body 113 structure at a relatively low level, better ensuring the safe operation of the dam. When the buoy 103 is deflated or inflated, it can drive the gate body 113 to lift and adjust its height. In conjunction with the hydraulic cylinder 105 and the hydraulic station 102, it controls the lifting and lowering of the gate body 113, which can improve and strengthen the gate body 113, making the lifting speed and lifting height adjustable and controllable, and the operation more stable. The top of the top cover 107 is equipped with a solenoid valve 106 and a drive motor 110, and the bottom working end of the drive motor 110 is connected to the oil pump 111.

[0024] Working principle and usage process of this invention: In use, when impurities adhere to the surfaces of the oil return head 108 and the filter element 112, the downward movement of the working end of the electric push rod 200 causes the small ring brush 202 to move downward. This movement, in turn, moves the fixing block to the right of the small ring brush 202, thereby causing the concave plate 213, the upper inclined plate 209 located to the left of the large ring brush 218, and the large ring brush 218 to move downward. At this time, the small ring brush 202 and the large ring brush 218 clean the impurities adhering to the outer wall of the oil return head 108 and the filter element 112. When the upper inclined plate 209 located to the left of the large ring brush 218 contacts the lower inclined plate 214 at the bottom of the filter element 112, the lower inclined plate 214 is squeezed and moves to the right, causing the lower plate brush 211 at the bottom of the filter element 112 to move to the right. The moving lower plate brush 211 then cleans the bottom of the filter element 112. As the small ring brush 202 continues to move downwards, the large ring brush 218 stops moving after reaching its limit position. At this time, the concave plate 213 stops moving, and the fixing block slides downwards on the concave plate 213. Then, the connecting spring 215 begins to compress, and the small ring brush 202 continues to move downwards. Then, the upper inclined plate 209 on the left side of the small ring brush 202 contacts the lower inclined plate 214 below the oil return head 108, and the lower inclined plate 214 begins to move to the right, driving the lower plate brush 211 below the oil return head 108 to move. The moving lower plate brush 211 can then clean the bottom of the oil return head 108. When it moves to the appropriate position, the working end of the electric push rod 200 moves upwards, driving the large ring brush 218, small ring brush 202, and other structures to move upwards. This process is repeated to clean the outer surface of the oil return head 108 and the filter element 112. During the cleaning process, the two sets of lower brushes 211 will move to the right, causing the extension plates to move as well. At this time, the ends of the extension plates will slide in the sliding groove inside the recess 212. The compression spring 217 will be compressed by the compression of the extension plates. When the small ring brush 202 and the large ring brush 218 move upward, the compression spring 217 will reset, pushing the two sets of extension plates to the left, causing the two sets of lower brushes 211 to move to the left to their original positions. During normal filtration, both sets of upper solenoid valves 304 are open. Hydraulic oil containing impurities inside the housing 109 enters the housing 205 through the connecting pipe 201, then passes through the two upper solenoid valves 304 and two filter screens 219 for filtration. After filtration, it flows from the inclined pipe 206 into the return pipe 207, and finally returns to the housing 109 to complete the circulation. When cleaning the filter screen 219, one of the upper solenoid valves 304 is closed (the upper solenoid valve 304 at the position of the filter screen 219 to be cleaned is in the open state), and the corresponding rubber plug 305 located on the right side of the filter screen 219 to be cleaned is inserted to seal it. Close the inclined tube 206 here, open the lower solenoid valve 301 at this position, and then clean the impurities on the surface of the filter screen 219 at this position. Loosen the locking screw 310 above the filter screen 219 that is about to be cleaned by turning it outward. Then move the T-shaped column 309 downward so that its bottom contacts the top of the filter screen 219 that is about to be cleaned. Then tighten the locking screw 310. Next, turn on the vibration motor 306. The vibration motor 306 generates vibration force that is transmitted to the tube rack 307, the T-shaped column 309 in sequence, and finally to the filter screen 219. Then the filter screen 219 is affected by the vibration force and shakes off the impurities attached to its surface. Simultaneously, the nozzle 312 at this position opens, spraying cleaning water onto the surface of the filter screen 219 to wash away any remaining impurities. The impurities and cleaning water then flow together through the lower solenoid valve 301 into the collection chamber 300, and are finally discharged through the lower outlet. When cleaning another filter screen 219, the same procedure applies: open the upper solenoid valve 304 on the filter screen 219 to be cleaned, close the upper solenoid valve 304 on the already cleaned filter screen 219, remove the rubber plug 305 from the cleaned filter screen 219, and insert the rubber plug 305 into the inclined tube 206 on the filter screen 219 to be cleaned. The rubber plug 305 (also opens the lower solenoid valve 301 at the bottom of the uncleaned filter screen 219 and closes the lower solenoid valve 301 below the cleaned filter screen 219), and at the same time moves the T-shaped post 309 above the cleaned filter screen 219 upward so that its bottom no longer contacts the filter screen 219. The T-shaped post 309 above the other uncleaned filter screen 219 is moved downward to contact the filter screen 219 that is about to be cleaned. The other uncleaned filter screen 219 is cleaned. At this time, the hydraulic oil containing impurities will be filtered through the cleaned filter screen 219, so that the equipment can be cleaned continuously without stopping during operation. The device can run continuously without interruption. When the compression spring 217 loses its elasticity after prolonged use, rotate the T-screw 400 towards the compression spring 217. This will cause the push plate 401 to move to the left and compress the compression spring 217. This will increase the elastic force on the compression spring 217, extend its service life, increase the frequency of replacement, and reduce operating costs.

[0025] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A gate speed and height regulating device, comprising a dam body (100), multiple gate bodies (113) disposed on the dam body (100), a hydraulic cylinder (105) for controlling the opening and closing of the gate bodies (113), and a hydraulic station (102) for controlling the operation of the hydraulic cylinders (105), wherein the hydraulic station (102) comprises a housing (109), a top cover (107) mounted on the top of the housing (109), and an oil return head (108) and an oil pump (111) disposed on the top cover (107), wherein a filter element (112) is disposed outside the oil pump (111), and a cleaning mechanism is disposed inside the housing (109), characterized in that, The cleaning mechanism includes: Small ring brushes (202) and large ring brushes (218) are fitted on the outside of the oil return head (108) and filter element (112) to clean impurities on the outer wall of the oil return head (108) and filter element (112); The bottom of the oil return head (108) and the filter element (112) are both equipped with a lower plate brush (211) for cleaning the impurities at the bottom of the oil return head (108) and the filter element (112); A housing (205) is provided on one side of the housing (109), and a filter screen (219) is provided inside the housing (205) for filtering hydraulic oil containing impurities; An electric push rod (200) is fixedly installed on the top of the top cover (107) for driving the small ring brush (202), the large ring brush (218) and the two sets of lower plate brushes (211) to move.

2. The gate speed and height regulating device according to claim 1, characterized in that: An upper inclined plate (209) is fixedly provided on one side of the small ring brush (202) and the large ring brush (218), and a lower inclined plate (214) is fixedly provided on one side of the lower plate brush (211). A fixing block is fixedly provided on the other side of the small ring brush (202), and a concave plate (213) is slidably provided inside the fixing block. A side plate is fixedly provided on the side of the upper inclined plate (209), and a connecting spring (215) is fixedly provided between the side plate and the bottom of the concave plate (213).

3. The gate speed and height regulating device according to claim 1, characterized in that: The bottom of the top cover (107) is fixedly provided with multiple sets of limiting rods (210) for limiting the small ring brush (202) and the large ring brush (218) when they move up and down.

4. The gate speed and height regulating device according to claim 1, characterized in that: The inner wall of the housing (109) is fixedly provided with a recess (212), and two sets of sliding grooves are opened inside the recess (212). An extension plate is fixedly provided on the other side of the lower brush (211), and a compression spring (217) is fixedly provided between the end of the extension plate and the inner wall of the sliding groove.

5. The gate speed and height regulating device according to claim 1, characterized in that: The top of the box (205) is fixedly provided with a top cover (204), a connecting pipe (201) is fixedly provided between the box (205) and the shell (109), and a return pipe (207) is provided between the box (205) and the shell (109).

6. The gate speed and height regulating device according to claim 5, characterized in that: The housing (205) is provided with a cleaning component for cleaning impurities adhering to the surface of the filter screen (219), the cleaning component comprising: The vibration motor (306) is installed on the top of the cover (204). Two sets of tube supports (307) are fixedly installed at the bottom of the vibration motor (306). T-shaped columns (309) are slidably installed inside the tube supports (307).

7. The gate speed and height regulating device according to claim 6, characterized in that: The tube rack (307) is internally connected to a locking screw (310) via a threaded connection. A vibration damping rubber ring (308) is fixedly installed inside the upper cover (204); The upper cover (204) is also provided with multiple sets of nozzles (312) for rinsing the impurities on the surface of the filter screen (219), and a water pipe (311) is fixedly provided on one side of the box (205). The water pipe (311) has a connector on its side.

8. The gate speed and height regulating device according to claim 5, characterized in that: The box (205) is fixedly provided with two sets of baffles (303) and partitions (302). An upper solenoid valve (304) is embedded in the baffle (303), and two sets of lower solenoid valves (301) are embedded in the box (205). A collection chamber (300) is also provided inside the box (205). Two sets of inclined tubes (206) are fixedly installed between the other side of the box (205) and the return pipe (207), and a rubber plug (305) is installed inside one end of the inclined tube (206).

9. The gate speed and height regulating device according to claim 4, characterized in that: The recess (212) is connected to a T-shaped screw (400) by a thread. The working end of the T-shaped screw (400) is fixedly provided with a push plate (401), and the other end of the T-shaped screw (400) extends to the outer surface of the housing (205).

10. The gate speed and height regulating device according to claim 1, characterized in that: The dam body (100) is rotatably connected to a set of outriggers (104) via a rotating shaft. The bottom of the outriggers (104) is provided with a set of floats (103). The hydraulic cylinder (105) is connected to the hydraulic station (102) via a hydraulic pipe (101).

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