A drainage and flood control node-type dam

Abstract

The present invention discloses a drainage and flood control node-type dam, which relates to the technical field of drainage and flood control dams, and includes a dam foundation, bank walls installed on both sides of the dam foundation, and a dam body installed on the upper surface of the dam foundation. A sluice hole is penetrated through the middle of the dam body. A sluice groove is opened inside the dam body above the sluice hole. A gate is slidably connected inside the sluice groove. A gate hoisting mechanism is installed on the upper surface of the dam body. A protective weir is installed on the upper surface of the dam foundation at the rear side of the dam body. By setting the protective weir, the present invention can prevent sediment accumulation so as to avoid clogging of the sluice hole, block the impact of water flow on the dam body, prevent water from penetrating into the dam body, and extend the service life of the flood control dam; by setting grooves, a pollution guide seat and a sewage collection box, in the way of centralized removal of impurities by the sewage collection box, while removing floating impurities upstream, it will not intercept fish and shrimp, and there is no need to manually clean a large-area filter screen, and the impurities in the sewage collection box can be quickly taken out.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage and flood control dikes, and particularly to a drainage and flood control node-type dike. Background Art

[0002] A flood control dike is an infrastructure for preventing flood invasion and damage. It is usually built with materials such as concrete, earth and stone, and has the function of resisting floods and protecting the safety of surrounding areas. Generally, the protection range of the dike is wide. In order to facilitate the drainage of the dike, gates are usually installed in a node-type manner on the dike. The construction of the dike can not only effectively block the flood, but also regulate the river water level by controlling the flow rate and velocity of the flood, and can reduce the impact and damage of the flood on the ecosystem, and protect the ecological environment such as wetlands and forests on both sides of the river.

[0003] The flood control dike separates the upstream from the downstream. The surface floating impurities carried by the upstream water flow accumulate on the water-facing side of the dike. If not cleaned for a long time, it is easy to affect the water quality, emit odors and affect the transparency of the river. Existing dikes mostly use the method of filtering with a filter screen to remove the floating impurities in the water. When the gate is opened for drainage, the impurities in the water are intercepted. However, this impurity removal method will not only intercept the impurities, but also intercept the fish and shrimp in the upstream water flow, which is not conducive to the balance of the ecosystem in the river. Moreover, the fish and shrimp rot and stink on the filter screen, increasing the burden of manually entering the dike to clean the large-area filter screen after the gate is closed; in addition, the anti-impact performance of the dike has always been the most concerned issue. There is a large pressure on the water-facing side of the dike with a relatively high water level, and the impact on the dike is very large when the water surface fluctuates. Therefore, existing dikes are designed in a trapezoidal shape with a narrower top and a wider bottom and anti-wave plates are installed on the water-facing side to achieve the effect of reducing the impact. However, the dike is in contact with the water flow for a long time, and it is inevitable that water seeps into the interior, still affecting the service life of the dike. Summary of the Invention

[0004] The purpose of the present invention is to provide a drainage and flood control node-type dike to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A drainage and flood control node-type dike, including a dam foundation, bank walls installed on both sides of the dam foundation, and a dike main body installed on the upper surface of the dam foundation. A sluice hole is penetrated through the middle of the dike main body. A sluice groove is opened inside the dike main body above the sluice hole. A gate is slidably connected inside the sluice groove. A gate opening hoisting mechanism is installed on the upper surface of the dike main body. A protective weir is installed on the upper surface of the dam foundation behind the dike main body. The gap between the dike main body and the protective weir forms a sewage discharge channel. A sewage guiding seat is installed on the bottom surface of the sewage discharge channel. A chute is opened on the rear side wall of the dike main body. A pressing mechanism is installed inside the chute.

[0006] Both the left and right sides of the sewage guiding seat are connected with sewage collecting boxes. An outlet is arranged inside the sewage discharge channel below the sewage collecting box. A connecting rod is connected to the upper surface of the sewage collecting box. A steel wire rope is connected to the middle of the connecting rod. The top of the steel wire rope is towed to the upper surface of the bank wall and connected with a lifting winch mechanism.

[0007] Preferably, the front and rear side walls of the sewage guiding seat are respectively connected with the dam body and the protective weir. The upper surface of the sewage guiding seat is inclined from the middle to the left and right sides to form a sewage discharge slope. The lowest point of the sewage discharge slope is flush with the top of the sewage collecting box.

[0008] Preferably, the sewage collecting box is in a hollow grid shape. The number of the sewage collecting boxes is two, and they are movably inserted into the gaps between the sewage guiding seat and the two side bank walls. The rear side of the outlet is communicated with the sewage collecting box through the grid gaps on the side wall of the sewage collecting box, and the front side of the outlet penetrates through the dam body.

[0009] Preferably, the lifting winch mechanism includes a lifting winch frame installed on the upper surface of the bank wall. A winch roller is rotatably connected to the inner side of the lifting winch frame. A lifting winch motor is installed on the front side wall of the lifting winch frame. A support is connected to the side wall of the lifting winch frame. A guiding roller is rotatably connected to the support. The bottom of the steel wire rope is connected with the sewage collecting box through the connecting rod, and the top of the steel wire rope is wound around the outer surface of the winch roller.

[0010] Preferably, a telescopic groove is arranged inside the protective weir. A water inlet groove is arranged on the side wall of the protective weir behind the telescopic groove. A baffle is arranged inside the telescopic groove. The upper surface of the baffle extends out from above the protective weir and is connected with a floating plate. The number of the floating plates is several and they are arranged at equal intervals on the upper surface of the baffle. Grooves are arranged on the upper surface of the baffle between two adjacent floating plates.

[0011] Preferably, the width dimension of the baffle is the same as the width dimension of the protective weir. The top of the baffle is connected with the floating plate, and the bottom of the baffle is slidably connected with the telescopic groove.

[0012] Preferably, the pressing mechanism includes a sliding plate installed inside the sliding groove. A pressing plate is vertically connected to the rear side wall of the sliding plate. A reinforcing rib is connected between the upper surface of the pressing plate and the sliding plate. The sliding plate is slidably connected with the inner wall of the sliding groove. The number of the pressing plates is several and they correspond to the positions of the floating plates.

[0013] Preferably, the gate opening winch mechanism includes a gate opening winch frame installed on the upper surface of the dam body. A first rope winding roller is rotatably connected to the inner side of the gate opening winch frame. A second rope winding roller is rotatably connected to the inner side of the gate opening winch frame on one side of the first rope winding roller. A first traction rope is wound around the outer surface of the first rope winding roller. A second traction rope is wound around the outer surface of the second rope winding roller. A gate opening winch motor is installed on the front side wall of the gate opening winch frame.

[0014] Preferably, the first towing rope passes through the gate opening winch frame and extends into the chute to be connected to the upper surface of the slide plate, the second towing rope passes through the gate opening winch frame and extends into the gate slot to be connected to the upper surface of the gate, the first rope winding roller is connected to the second rope winding roller, and the winding directions of the first towing rope and the second towing rope on the first rope winding roller and the second rope winding roller are opposite.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. For this drainage and flood control node-type dam, by setting the protective weir and installing the protective weir at the rear side of the dam body, on the one hand, the protective weir blocks the sediment in the upstream water flow to prevent sediment accumulation on the water-facing side of the dam from causing clogging of the gate holes. On the other hand, the protective weir contacts the upstream water flow instead of the dam body, blocking the impact of the water flow on the dam body and avoiding the seepage of the water flow into the dam body to cause a breach. At the same time, the pollution guide seat connects the dam body and the protective weir to reinforce the bottom of the protective weir and maintain the anti-impact effect of the protective weir, extending the service life of the flood control dam.

[0017] 2. For this drainage and flood control node-type dam, by setting the groove, the pollution guide seat and the sewage collection box, when the upstream water level is higher than the protective weir, the floating plate is driven to move upward, and the floating plate pulls the baffle plate to move upward to block the water flow. Since the groove is lower than the upper surface of the baffle plate, the impurities floating on the water surface of the water flow will cross the baffle plate from the groove and flow into the sewage discharge channel, and flow into the two sewage collection boxes along the sewage guide slope on the upper surface of the pollution guide seat. The floating impurities are intercepted by the grid gaps on the side wall of the sewage collection box, and the filtered water flow is discharged downstream from the water outlet. By starting the lifting winch motor, the lifting winch motor drives the winch roller to rotate, the winch roller drives the steel wire rope to wind, and the steel wire rope pulls the sewage collection box to rise to remove impurities. By the centralized impurity removal method of the sewage collection box, while removing the floating impurities upstream, it will not intercept fish and shrimp, and there is no need to manually clean a large-area filter screen, and the impurities in the sewage collection box can be quickly removed.

[0018] 3. For this drainage and flood control node-type dam, by setting the pressing mechanism, when the gate is opened for drainage, the first towing rope is released by the rotation of the first rope winding roller. The slide plate connected to the first towing rope descends in the chute and drives the pressing plate to descend. The pressing plate presses the floating plate to push the floating plate downward, and the floating plate pushes the baffle plate downward, so that the upstream water flow passes through the baffle plate and flows downstream. When the pressing plate is in the uppermost position, the floating plate removes impurities according to the rise of the upstream water level. When the pressing plate moves downward to press the floating plate for drainage, the rapid switching between the upstream drainage and the upstream impurity removal states is realized.

[0019] 4. For this drainage and flood control node-type dam, by setting up a gate opening winch mechanism, the first rope winding roller and the second rope winding roller are driven to rotate by the gate opening winch motor. Since the winding directions of the first traction rope and the second traction rope on the first rope winding roller and the second rope winding roller are opposite, the first traction rope on the first rope winding roller unwinds, while the second traction rope on the second rope winding roller winds up. The second traction rope pulls the gate upward to open the gate, and the sliding plate and the pressing plate move downward under their own gravity to press the floating plate, opening the upstream drainage. The gate and the pressing plate are linked to move up and down, realizing the synchronous progress of the dam body gate opening and the upstream drainage. Description of the Drawings

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the rear split structural schematic diagram of the present invention;

[0022] Figure 3 is the side sectional structural schematic diagram of the present invention;

[0023] Figure 4 is the connection structural schematic diagram of the gate opening winch mechanism of the present invention;

[0024] Figure 5 is the front sectional structural schematic diagram of the present invention;

[0025] Figure 6 is the structural schematic diagram of the pressing mechanism of the present invention;

[0026] Figure 7 is the rear side structural schematic diagram of the protective weir of the present invention;

[0027] Figure 8 For the present invention Figure 5 is the enlarged schematic diagram of the structure of part A in the figure.

[0028] In the figure: 1. Dam foundation; 2. Bank wall; 3. Dam body; 31. Gate slot; 4. Gate hole; 5. Gate; 6. Gate opening winch mechanism; 61. Gate opening winch frame; 62. First rope winding roller; 63. Second rope winding roller; 64. First traction rope; 65. Second traction rope; 66. Gate opening winch motor; 7. Protective weir; 71. Expansion slot; 72. Water inlet slot; 73. Baffle; 74. Floating plate; 75. Groove; 8. Sewage discharge channel; 9. Sewage guiding seat; 91. Sewage collection box; 92. Water outlet; 93. Connecting rod; 94. Steel wire rope; 95. Lifting winch mechanism; 951. Lifting winch frame; 952. Winch roller; 953. Lifting winch motor; 954. Support; 955. Guide roller; 10. Slide groove; 11. Pressing mechanism; 111. Sliding plate; 112. Pressing plate; 113. Reinforcing rib. Detailed Embodiments

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figures 1 to 8 As shown, the drainage and flood prevention node-type dam of this embodiment includes a dam foundation 1, bank walls 2 installed on both sides of the dam foundation 1, and a dam body 3 installed on the upper surface of the dam foundation 1. A gate hole 4 is opened through the middle of the dam body 3, and a gate groove 31 is opened inside the dam body 3 above the gate hole 4. A gate 5 is slidably connected inside the gate groove 31. The gate 5, the gate hole 4, and the gate groove 31 are all three in number and are arranged equidistantly in the dam body 3 to realize three-gate opening drainage. A gate opening winch mechanism 6 is installed on the upper surface of the dam body 3 to pull the gate 5 The gate is moved upward to open, and at the same time, it is also used to drive the pressing plate 112 to rise and fall. A protective weir 7 is installed on the upper surface of the dam foundation 1 on the rear side of the dam body 3, which serves as a mud barrier, anti-seepage and water flow impact protection on the rear side of the dam body 3, and provides basic conditions for removing floating objects on the upstream water surface. The gap between the dam body 3 and the protective weir 7 constitutes a sewage channel 8, and a sewage guide seat 9 is installed on the bottom surface of the sewage channel 8, which is used to remove floating objects on the upstream water surface. A chute 10 is opened on the rear side wall of the dam body 3, and a pressing mechanism 11 is installed inside the chute 10;

[0033] On both the left and right sides of the sewage guiding seat 9, there are sewage collecting boxes 91 connected, which are used to collect the water and floating impurities flowing down from the upper surface of the sewage guiding seat 9. Inside the sewage discharge channel 8 below the sewage collecting box 91, there is a water outlet 92 opened, which is used to discharge the water filtered out from the sewage collecting box 91. On the upper surface of the sewage collecting box 91, there is a connecting rod 93 connected. In the middle of the connecting rod 93, there is a steel wire rope 94 connected. The bottom of the steel wire rope 94 is connected to the sewage collecting box 91 through the connecting rod 93, which is convenient for the suspension and lifting of the sewage collecting box 91. The top of the steel wire rope 94 is towed to the upper surface of the bank wall 2 and connected with a lifting winch mechanism 95, which is used to wind and unwind the steel wire rope 94, so as to conveniently pull the sewage collecting box 91 onto the bank wall 2.

[0034] Specifically, the front and rear side walls of the sewage guiding seat 9 are respectively connected to the dam body 3 and the protective weir 7. The protective weir 7 contacts the upstream water flow instead of the dam body 3, blocking the water flow from impacting the dam body 3. The sewage guiding seat 9 connects the dam body 3 and the protective weir 7, strengthening the bottom of the protective weir 7 and maintaining the anti-impact effect of the protective weir 7. The upper surface of the sewage guiding seat 9 slopes from the middle to both left and right sides to form a sewage discharge slope, which is convenient for the water and impurities falling on the sewage guiding seat 9 to flow along the sewage discharge slope to both sides. The lowest point of the sewage discharge slope is flush with the top of the sewage collecting box 91, so that the water flow carrying impurities flows into the two sewage collecting boxes 91 along the sewage guiding slope on the upper surface of the sewage guiding seat 9 for collection.

[0035] Furthermore, the sewage collecting box 91 is in a hollow grid shape, which is convenient for the solid-liquid separation of the inflowing water and impurities, intercepting the floating impurities, and the filtered water flows downward into the water outlet 92. The number of the sewage collecting boxes 91 is two, and they are movably inserted into the gaps between the sewage guiding seat 9 and the two side bank walls 2, which is convenient for lifting and cleaning when the impurities inside the sewage collecting box 91 are full. The rear side of the water outlet 92 is communicated with the sewage collecting box 91 through the grid gaps on the side wall of the sewage collecting box 91, and the front side of the water outlet 92 penetrates through the dam body 3, which is used to export the water filtered out by the sewage collecting box 91, so that the filtered water flows downward from the water outlet 92 to the downstream, avoiding the accumulation of water flow in the sewage discharge channel 8.

[0036] Further, the lifting and winding mechanism 95 includes a lifting and winding frame 951 installed on the upper surface of the quay wall 2. A winding roller 952 is rotatably connected inside the lifting and winding frame 951. A lifting and winding motor 953 is installed on the front side wall of the lifting and winding frame 951. The shaft end of the lifting and winding motor 953 passes through the side wall of the lifting and winding frame 951 and is connected to the winding roller 952, so that when the lifting and winding motor 953 is started, it drives the winding roller 952 to rotate. The lifting and winding motor 953 is essentially a motor with a forward and reverse circuit. In addition, a limit component used in a common winch is installed on the winding roller 952 for limiting the winding and unwinding of the winding roller 952. A support 954 is connected to the side wall of the lifting and winding frame 951. A guide roller 955 is rotatably connected to the support 954 for guiding the wire rope 94. The bottom of the wire rope 94 is connected to the sewage collection tank 91 through a connecting rod 93. The top of the wire rope 94 is wound around the outer surface of the winding roller 952. By driving the wire rope 94 to wind through the winding roller 952, the sewage collection tank 91 is pulled up. The staff only needs to pick up the sewage collection tank 91 at a fixed position on the quay wall 2 and pour out the impurities stored inside. This centralized impurity removal method of the sewage collection tank 91 can remove the floating impurities upstream without intercepting fish and shrimp, and there is no need to manually clean a large area of filters, and the impurities in the sewage collection tank 91 can be quickly removed.

[0037] Further, a telescopic groove 71 is formed inside the protective weir 7. An inlet groove 72 is formed in the side wall of the protective weir 7 at the rear of the telescopic groove 71. After the floating plate 74 moves up with the water level, the floating plate 74 pulls the baffle 73 upward. There is inevitably a gap between the baffle 73 and the telescopic groove 71. Therefore, a small amount of water will flow into the telescopic groove 71 for operation. In order to prevent the subsequent baffle 73 from being blocked when moving downward in the telescopic groove 71, the water flow in the telescopic groove 71 is discharged through the inlet groove 72. A baffle 73 is arranged inside the telescopic groove 71. The upper surface of the baffle 73 extends out from above the protective weir 7 and is connected to a floating plate 74. The floating plate 74 is hollow inside and can float in water. And in the actual use process, it is necessary to ensure that the buoyancy received by the floating plate 74 can lift the baffle 73. The number of floating plates 74 is several and they are arranged at equal intervals on the upper surface of the baffle 73. A groove 75 is formed on the upper surface of the baffle 73 between two adjacent floating plates 74. The height of the groove 75 is lower than the height of the upper surface of the baffle 73. When the water level rises and floats the floating plate 74, the position of the water level is at the bottom of the floating plate 74, that is, the upper surface of the baffle 73. The setting of the groove 75 can enable the impurities floating on the water surface to flow over the baffle 73 through the groove 75 and into the sewage discharge channel 8, achieving the effect of automatic impurity removal, and the impurity removal only acts on the surface water flow, and the fish and shrimp below the water flow are not affected.

[0038] Further, the width dimension of the baffle 73 is the same as the width dimension of the protective weir 7. The top of the baffle 73 is connected to the floating plate 74, and the bottom of the baffle 73 is slidably connected to the telescopic groove 71. When the upstream water level is higher than the protective weir 7, it drives the floating plate 74 to move upward. The floating plate 74 pulls the baffle 73 to move upward to block the water flow. When the baffle 73 and the floating plate 74 rise to the highest position, at this time, the upstream water level is too high, which is set as the drainage water level, and the floodgate drainage is started.

[0039] Further, the pressing mechanism 11 includes a sliding plate 111 installed inside the sliding groove 10. The sliding plate 111 is inside the sliding groove 10. The pressing plate 112 connected to the rear side of the sliding plate 111 passes through the side wall of the dam body 3 and extends out, so that the sliding plate 111 is stuck and slides up and down inside the sliding groove 10 to maintain the stability of the lifting of the pressing plate 112. A pressing plate 112 is vertically connected to the rear side wall of the sliding plate 111. A reinforcing rib 113 is connected between the upper surface of the pressing plate 112 and the sliding plate 111. The pressing plate 112, the sliding plate 111, and the reinforcing rib 113 are all made of metal. In actual application, it is necessary to ensure that the weights of the pressing plate 112 and the sliding plate 111 can press down the floating plate 74 floating on the surface. The sliding plate 111 is slidably connected to the inner wall of the sliding groove 10. The number of pressing plates 112 is several and corresponds to the position of the floating plate 74. The pressing plate 112 descends to press the floating plate 74 and pushes the floating plate 74 downward. The floating plate 74 pushes the baffle 73 downward, allowing the upstream water flow to pass through the baffle 73 and flow downstream to open the drainage.

[0040] Further, the floodgate hoisting mechanism 6 includes a floodgate hoisting frame 61 installed on the upper surface of the dam body 3. A first winding roller 62 is rotatably connected to the inside of the floodgate hoisting frame 61. A second winding roller 63 is rotatably connected to the inside of the floodgate hoisting frame 61 on one side of the first winding roller 62. A first traction rope 64 is wound around the outer surface of the first winding roller 62. A second traction rope 65 is wound around the outer surface of the second winding roller 63. A floodgate hoisting motor 66 is installed on the front side wall of the floodgate hoisting frame 61. The shaft end of the floodgate hoisting motor 66 passes through the floodgate hoisting frame 61 and is connected to the second winding roller 63. The floodgate hoisting motor 66 is essentially a motor with a forward and reverse circuit. Moreover, limit components commonly used in winches are also installed on the first winding roller 62 and the second winding roller 63 for limiting the winding and unwinding of the first winding roller 62 and the second winding roller 63. The number of floodgate hoisting mechanisms 6 is three, corresponding to the three gates 5 respectively. The three first traction ropes 64 on the three floodgate hoisting mechanisms 6 are connected to the upper surface of the sliding plate 111 together.

[0041] Furthermore, the first towing rope 64 passes through the gate opening winch frame 61 and extends into the chute 10 to be connected to the upper surface of the sliding plate 111. The second towing rope 65 passes through the gate opening winch frame 61 and extends into the gate slot 31 to be connected to the upper surface of the gate 5. The first rope winding roller 62 is connected to the second rope winding roller 63, and the winding directions of the first towing rope 64 and the second towing rope 65 on the first rope winding roller 62 and the second rope winding roller 63 are opposite. When the gate opening winch motor 66 drives the first rope winding roller 62 and the second rope winding roller 63 to rotate, the first towing rope 64 on the first rope winding roller 62 is unreeled, while the second towing rope 65 on the second rope winding roller 63 is reeled in. The second towing rope 65 pulls the gate 5 to move upward to open the gate, and the sliding plate 111 and the pressing plate 112 move downward under their own gravity to press the floating plate 74, opening the upstream drainage, and realizing the linkage lifting of the gate 5 and the pressing plate 112.

[0042] The usage method of this embodiment is as follows: When the dam body 3 separates the upper and lower reaches of the river, the sediment carried by the upstream water flow accumulates at the bottom of the water-facing side of the protection weir 7, which can effectively prevent the sediment flow from blocking the sluice opening 4 when the sluice is opened. The protection weir 7 contacts the upstream water flow instead of the dam body 3, blocking the water flow from impacting the dam body 3 and at the same time preventing the water flow from penetrating into the dam body 3 and causing a breach. The sewage guiding seat 9 connects the dam body 3 and the protection weir 7 to reinforce the bottom of the protection weir 7 and maintain the anti-impact effect of the protection weir 7. As the upstream water level rises, when the upstream water level exceeds the protection weir 7, the water flow contacts the floating plate 74, causing the floating plate 74 to rise with the water level due to buoyancy. The floating plate 74 drives the baffle plate 73 to move upward, and the baffle plate 73 blocks the upstream water flow. Since the groove 75 is lower than the upper surface of the baffle plate 73, a gap is provided for the water flow, so that the uppermost water flow and the impurities floating on its surface will pass over the baffle plate 73 through the groove 75 and flow into the sewage discharge channel 8. The water flow drives the impurities to flow along the sewage guiding slopes on the upper surface of the sewage guiding seat 9 to both sides and finally into the two sewage collection boxes 91. The floating impurities are intercepted by the grid gaps on the side walls of the sewage collection boxes 91, and the filtered water flow passes through the dam body 3 from the water outlet 92 and is discharged downstream. When the upstream water level is in the interval between the lowest and highest positions of the baffle plate 73, the upstream water flow is in a state of impurity removal. When the water level reaches the highest position of the baffle plate 73, at this time the water level is relatively high. To avoid excessive upstream water storage causing floods, the sluice opening winch motor 66 is started, and the sluice opening winch motor 66 drives the first rope winding roller 62 and the second rope winding roller 63 to rotate. Since the winding directions of the first traction rope 64 and the second traction rope 65 on the first rope winding roller 62 and the second rope winding roller 63 are opposite, the first traction rope 64 on the first rope winding roller 62 is unwound, while the second traction rope 65 on the second rope winding roller 63 is wound. The second traction rope 65 pulls the gate 5 upward, causing the gate 5 to enter the gate slot 31, and the sluice opening 4 is opened to complete the sluice opening. The first traction rope 64 is lengthened, causing the sliding plate 111 and the pressing plate 112 to move downward under their own gravity. The pressing plate 112 moves downward to press the floating plate 74 and pushes the floating plate 74 downward. The floating plate 74 drives the baffle plate 73 to move downward, making the baffle plate 73 lower than the upstream water level. At this time, the upstream water flow passes through the baffle plate 73 and flows downstream for drainage. When the upstream water level drops to the top of the protection weir 7, the water flow is significantly reduced due to the blockage of the protection weir 7. The sluice opening winch motor 66 rotates in reverse, the first traction rope 64 is wound, and the second traction rope 65 is unwound, causing the pressing plate 112 to move upward and the gate 5 to fall to close the sluice. When the sewage collection boxes 91 store too many impurities after long-term collection, the lifting winch motor 953 is started, and the lifting winch motor 953 drives the winch roller 952 to rotate. The winch roller 952 drives the steel wire rope 94 to wind, and the steel wire rope 94 pulls the sewage collection box 91 to rise. The staff can lift the sewage collection box 91 on the two side walls 2 and pour out the internal impurities for centralized treatment.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drainage and flood control node-type dam, comprising a dam foundation (1), bank walls (2) installed on both sides of the dam foundation (1), and a dam main body (3) installed on the upper surface of the dam foundation (1), characterized in that: A sluice opening (4) runs through the middle of the dam body (3). Inside the dam body (3) above the sluice opening (4), a sluice groove (31) is provided. A gate (5) is slidably connected inside the sluice groove (31). An opening gate hoisting mechanism (6) is installed on the upper surface of the dam body (3). A protective weir (7) is installed on the upper surface of the dam foundation (1) at the rear side of the dam body (3). The gap between the dam body (3) and the protective weir (7) forms a sewage discharge channel (8). A sewage guiding seat (9) is installed on the bottom surface of the sewage discharge channel (8). A chute (10) is provided on the rear side wall of the dam body (3), and a pressing mechanism (11) is installed inside the chute (10). On both the left and right sides of the sewage guiding seat (9), a sewage collection box (91) is connected. An outlet (92) is provided inside the sewage discharge channel (8) below the sewage collection box (91). A connecting rod (93) is connected to the upper surface of the sewage collection box (91). A steel wire rope (94) is connected to the middle of the connecting rod (93). The top of the steel wire rope (94) is towed to the upper surface of the bank wall (2) and connected to a lifting hoisting mechanism (95). A telescopic groove (71) is provided inside the protective weir (7). A water inlet groove (72) is provided on the side wall of the protective weir (7) at the rear side of the telescopic groove (71). A baffle (73) is arranged inside the telescopic groove (71). The upper surface of the baffle (73) extends out above the protective weir (7) and is connected to a floating plate (74). The number of the floating plates (74) is several and they are arranged at equal intervals on the upper surface of the baffle (73). A groove (75) is provided on the upper surface of the baffle (73) between two adjacent floating plates (74). The pressing mechanism (11) includes a sliding plate (111) installed inside the chute (10). A pressing plate (112) is vertically connected to the rear side wall of the sliding plate (111). A reinforcing rib (113) is connected between the upper surface of the pressing plate (112) and the sliding plate (111). The sliding plate (111) is slidably connected to the inner wall of the chute (10). The number of the pressing plates (112) is several and they correspond to the positions of the floating plates (74).

2. The drainage and flood control node-type dam according to claim 1, characterized in that: The front and rear side walls of the sewage guiding seat (9) are respectively connected to the dam body (3) and the protective weir (7). The upper surface of the sewage guiding seat (9) slopes from the middle to the left and right sides to form a sewage discharge slope, and the lowest point of the sewage discharge slope is flush with the top of the sewage collection box (91).

3. The drainage and flood control node-type dam according to claim 1, wherein: The sewage collection box (91) is in a hollow grid shape. The number of the sewage collection boxes (91) is two, and they are movably inserted into the gap between the sewage guiding seat (9) and the two side bank walls (2). The rear side of the outlet (92) communicates with the sewage collection box (91) through the grid gap on the side wall of the sewage collection box (91), and the front side of the outlet (92) penetrates through the dam body (3).

4. The drainage and flood control node-type dam according to claim 1, wherein: The lifting hoisting mechanism (95) includes a lifting hoisting frame (951) installed on the upper surface of the bank wall (2). A hoisting roller (952) is rotatably connected to the inner side of the lifting hoisting frame (951). A lifting hoisting motor (953) is installed on the front side wall of the lifting hoisting frame (951). A support (954) is connected to the side wall of the lifting hoisting frame (951). A guiding roller (955) is rotatably connected to the support (954). The bottom of the steel wire rope (94) is connected to the sewage collection tank (91) through a connecting rod (93). The top of the steel wire rope (94) is wound around the outer surface of the hoisting roller (952).

5. The drainage and flood control node-type dam according to claim 1, characterized in that: The width dimension of the baffle plate (73) is the same as that of the protective weir (7). A floating plate (74) is connected to the top of the baffle plate (73). The bottom of the baffle plate (73) is slidably connected to the telescopic groove (71).

6. The drainage and flood control node-type dam according to claim 1, characterized in that: The gate opening hoisting mechanism (6) includes a gate opening hoisting frame (61) installed on the upper surface of the dam body (3). A first rope winding roller (62) is rotatably connected to the inner side of the gate opening hoisting frame (61). A second rope winding roller (63) is rotatably connected to the inner side of the gate opening hoisting frame (61) on one side of the first rope winding roller (62). A first traction rope (64) is wound around the outer surface of the first rope winding roller (62). A second traction rope (65) is wound around the outer surface of the second rope winding roller (63). A gate opening hoisting motor (66) is installed on the front side wall of the gate opening hoisting frame (61).

7. The drainage and flood control node-type dam according to claim 6, characterized in that: The first traction rope (64) penetrates through the gate opening hoisting frame (61) and extends into the chute (10) to be connected to the upper surface of the sliding plate (111). The second traction rope (65) penetrates through the gate opening hoisting frame (61) and extends into the gate slot (31) to be connected to the upper surface of the gate (5). The first rope winding roller (62) is connected to the second rope winding roller (63), and the winding directions of the first traction rope (64) and the second traction rope (65) on the first rope winding roller (62) and the second rope winding roller (63) are opposite.

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