Centrifugal clutch type drain cover

Abstract

This invention discloses a centrifugal clutch-type drainage manhole cover, comprising: a supporting base; a manhole cover body, the manhole cover body including a cover body, the cover body having annular and spaced primary drainage outlets and secondary drainage outlets, and an opening and closing grid plate connected to the bottom of the manhole cover body below the primary drainage outlets; and a rotating valve plate assembly, the rotating valve plate assembly being placed below the secondary drainage outlets and connected to the bottom of the manhole cover body. This invention uses gravity as the primary trigger signal and water turbine rotation speed as the secondary trigger signal, achieving normal micro-drainage and increased drainage during heavy rainfall through a filter chassis linked to the opening and closing grid plate. It also utilizes water flow to drive gears for active unblocking. When rainfall further increases, the water turbine drives the centrifugal clutch mechanism to open the secondary drainage outlets, enabling the manhole cover system to automatically complete a three-stage stepped response from micro-drainage to primary strong drainage and then to secondary strong drainage according to the rainfall intensity, ensuring drainage effectiveness.

Description

Technical Field

[0001] This invention relates to the field of municipal drainage technology, specifically to a centrifugal clutch-type drainage well cover. Background Technology

[0002] In recent years, with the continuous advancement of urbanization, the permeability of urban surfaces has been declining, and the pressure on municipal drainage systems has been increasing. One type is the metal manhole cover with a fixed-diameter circular hole, through which rainwater is directly discharged. This type of manhole cover has a simple structure and low cost, but due to the fixed size of the drainage hole, its drainage capacity is limited. It can barely cope with normal rainfall, but it is difficult to drain smoothly in the event of moderate to heavy rainfall. Another type is the grid-type manhole cover made of welded steel bars. Although it has a larger water passage area and higher drainage efficiency, debris such as tree branches, leaves, and plastic bags on the street can easily enter the sewer through the grid, causing pipe blockage and odor problems. The existing drainage well cover technology has the following shortcomings: First, conventional well covers have a fixed drainage capacity and cannot automatically achieve multi-level, stepped drainage adjustment according to changes in rainfall intensity; Second, grid-type well covers are prone to pipe blockage and odor problems; Third, they lack effective utilization of rainwater kinetic energy and fail to convert water flow energy into a power source to drive the drainage mechanism. To address the shortcomings of the prior art, the present invention provides a centrifugal clutch-type drainage well cover. Summary of the Invention

[0003] The purpose of this invention is to provide a centrifugal clutch-type drainage well cover. This application uses gravity as the primary trigger signal and water turbine speed as the secondary trigger signal. It achieves normal micro-drainage and heavy rain-induced increased drainage by connecting the filter chassis and the opening and closing grid plate. It also utilizes water flow to drive gears to actively clear blockages. When the rainfall further increases, the water turbine drives the centrifugal clutch mechanism to open the secondary drainage outlet, so that the well cover system automatically completes a three-stage stepped response from micro-drainage to primary strong drainage and then to secondary strong drainage according to the rainfall intensity, thereby improving the drainage effect.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a centrifugal-clutch type drainage well cover, comprising: a supporting base frame; a well cover body, the well cover body being disposed on the top of the supporting base frame, the well cover body including a cover body, the cover body having annular and spaced primary drainage outlets and secondary drainage outlets, and an opening and closing grid plate connected to the bottom of the well cover body below the primary drainage outlets; a rotating valve plate assembly, the rotating valve plate assembly being disposed below the secondary drainage outlets and connected to the bottom of the well cover body; a multi-antennae flow guide cover, the multi-antennae flow guide cover being disposed below the cover body and guiding and converging water flow; a receiving and filtering base plate, the receiving and filtering base plate being disposed on the supporting base frame and acting on the bottom of the multi-antennae flow guide cover, used to receive and filter rainwater discharged from the primary and secondary drainage outlets; and a pull rope transmission assembly connecting the receiving and filtering base plate and the opening and closing grid plate, wherein when the rainfall is initially, the opening and closing grid plate... When the primary drainage outlets are set in parallel, it is for conventional drainage. When the rainfall increases, the receiving filter chassis itself quickly accumulates water and becomes heavy, pulling down the pull rope transmission assembly, causing the opening and closing grid plate to deflect and open relative to the primary drainage outlet to perform the primary drainage action. A gear transmission assembly built into the opening and closing grid plate is used to drive the grid to rotate and expel blockages between the grid channels. A water turbine rotation mechanism is located at the converging position at the bottom of the multi-angle guide cover and is assembled with the supporting base. A centrifugal clutch mechanism is connected to the water turbine rotation mechanism, extending to the secondary drainage outlet position and acting with the rotating valve plate assembly. Rainwater flows along the multi-angle guide cover to the water turbine rotation mechanism and drives it to rotate. When the primary drainage volume continues to increase, the water turbine rotation mechanism rotates at high speed and reaches the trigger value of the centrifugal clutch mechanism, driving the rotating valve plate assembly to work, causing the secondary drainage outlet to open and perform secondary drainage.

[0005] Preferably, the supporting base includes a manhole cover seat, a manhole cover outer frame fixed to the top of the manhole cover seat, and a step groove provided in the inner circle of the manhole cover outer frame for overlapping of the cover body.

[0006] Preferably, each of the opening and closing grid plates includes two end rings disposed at the bottom of the cover, a long light rod fixed to the two end rings, and two first transmission bushings sleeved on the long light rod. The two first transmission bushings are fixed to a rectangular frame, and grid blades are arrayed inside the rectangular frame. A base plate is also fixed to the middle of the rectangular frame near the first transmission bushing, and short light rods are disposed between the base plates. A fixing seat is fixed to the bottom of the cover. A telescopic rod is provided, one end of which is hinged to the fixing seat through a hinge, and the other end is provided with a second transmission bushing sleeved on the outer periphery of the short light rod. When the telescopic rod is extended or retracted by the power provided by the pull rope transmission assembly, it is used to drive the two first transmission bushings on the rectangular frame to deflect about the long light rod as an axis, thereby realizing the opening and closing of the corresponding first-stage drainage outlet. It also includes a meshing transmission assembly disposed on the side of the rectangular frame near the two first transmission bushings, which is used to drive a number of grid blades to deflect.

[0007] Preferably, each of the grid blades includes a pivot shaft that is laterally mounted inside the rectangular frame, and a grid plate body fixed to the pivot shaft.

[0008] Preferably, the telescopic rod includes a telescopic sleeve and a telescopic rod body, wherein the telescopic sleeve and the telescopic rod body are embedded at opposite ends, and their opposite ends are respectively fitted with a hinge and a second transmission bushing; the pull rope transmission assembly includes a flexible steel wire rope fixed to the end of the telescopic rod body away from the second transmission bushing, and the end of the flexible steel wire rope away from the telescopic rod body passes sequentially through a first through hole at the end of the telescopic sleeve, a second through hole opened on the multi-antennae flow guide cover, and is fixedly connected to the receiving filter base; and a third spring sleeved on the outer periphery of the flexible steel wire rope and connected between the telescopic sleeve and the telescopic rod body.

[0009] Preferably, the meshing transmission assembly includes a ball bearing assembly disposed on the rectangular frame, wherein the ball bearing assembly and two first transmission bushings are distributed on adjacent sides of the rectangular frame; an arc-shaped track fixed to the bottom of the cover, wherein the sidewall of the arc-shaped track is provided with an inclined surface and a flat surface in sequence along the opening direction of the rectangular frame, and the inclined surface and the flat surface can contact the ball bearing assembly; and an elongated groove opened on the side of the rectangular frame near the two first transmission bushings; one end of each of the rotating shafts extends into the elongated groove and is fixed with a transmission gear; a fixed rail fixed on the side of the rectangular frame near the two first transmission bushings, wherein a transmission bar is provided in the fixed rail, and a plurality of racks meshing with transmission gears are fixed on the inner side of the transmission bar, and a second spring is provided between the lower outer part of the transmission bar and the connecting block fixed to the lower part of the fixed rail; and a limiting post fixed on the upper outer part of the transmission bar, wherein the limiting post is placed below the telescopic rod and is used to limit the telescopic rod.

[0010] Preferably, the receiving and filtering chassis has a wave-shaped cross-section and a plurality of filter holes are formed on the receiving and filtering chassis. The receiving and filtering chassis is fixedly connected to a plurality of flexible steel wire ropes containing pull rope transmission components. An extension sleeve and a pipe sleeve seat are coaxially arranged and distributed vertically upwards and downwards. The extension sleeve is fixed in the middle of the receiving and filtering chassis and placed at the convergence position of the multi-antennae flow guide cover. The pipe sleeve seat is fixed in the bottom center of the well cover seat. A first connecting ring and a second connecting ring are respectively arranged on the extension sleeve and the pipe sleeve seat. A telescopic column is fixed annularly at the bottom of the first connecting ring, and a telescopic hole is formed annularly on the outer periphery of the second connecting ring. A plurality of telescopic columns can be inserted into a plurality of telescopic holes and are respectively fitted with a first spring. Each first spring is connected to the opposite face of the first connecting ring and the second connecting ring.

[0011] Preferably, the water turbine rotating mechanism includes a hollow frame fixed to the bottom of the inner sleeve seat, with an impeller disposed on the top of the hollow frame; and a support plate assembled with the top of the impeller, wherein the top of the support plate is assembled with a centrifugal clutch mechanism.

[0012] Preferably, the centrifugal clutch mechanism includes an inner ring, and each of the centrifugal grooves formed on the sidewall of the inner ring is provided with a clutch slider, and a reset elastic element is connected between the clutch slider and the centrifugal groove.

[0013] Preferably, the rotary valve plate assembly includes a bracket that slides and limits the bottom of the cover, wherein a transmission friction ring fixed at the bottom of the bracket is placed on the outer periphery of the centrifugal clutch mechanism, and a baffle is fixed to its outer periphery, and a plurality of baffles can block a plurality of secondary drain outlets; and an mounting block that is fixed to the bottom of the cover and distributed at intervals with the plurality of baffles, and each mounting block is connected to its adjacent baffle with a spring piece.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses gravity as the primary trigger signal and water turbine rotation speed as the secondary trigger signal. Through a weight-increasing linkage opening and closing grid plate connected to the filter chassis, it achieves primary drainage for normal micro-drainage and increased drainage during heavy rainfall. During the primary drainage process, the water flow drives the gear assembly to actively clear grid blockages. When the rainfall increases further, the water turbine rotation mechanism drives the centrifugal clutch mechanism to automatically open the secondary drainage outlet, so that the entire manhole cover system automatically completes a three-stage stepped response from micro-drainage to primary strong drainage and then to secondary strong drainage according to the rainfall intensity. At the same time, the multi-antennae flow guide cover optimizes the angle of each stage of incoming water to ensure that the water flow energy is efficiently converged to the water turbine, thus taking into account the daily drainage, self-cleaning and flood discharge capacity under extreme rainfall. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 for Figure 2 A schematic diagram of the internal structure cut along the CC axis; Figure 4 This is a top view of the structure of the present invention; Figure 5 for Figure 4 A schematic diagram of the internal structure cut along section AA. Figure 6 for Figure 5 Enlarged structural diagram at point G; Figure 7 for Figure 4 A schematic diagram of the internal structure cut along the middle BB section; Figure 8 This is a first-view three-dimensional structural diagram of a partial disassembly of the present invention; Figure 9 This is a second-view three-dimensional structural diagram of a partial disassembly of the present invention; Figure 10 This is a front view of a partially disassembled structure of the present invention; Figure 11 for Figure 10 Schematic diagram of the internal structure cut along the middle DD section; Figure 12 for Figure 11 Enlarged structural diagram at point E; Figure 13 for Figure 10 A schematic diagram of the internal structure cut along the FF line; Figure 14 This is a partially enlarged structural diagram of the openable grid plate in this invention; Figure 15 for Figure 14 A schematic diagram of the disassembled structure; Figure 16 for Figure 15 Enlarged structural schematic diagram of the intermediate meshing transmission assembly; Figure 17 This is a schematic diagram of the internal structure of the telescopic rod in this invention.

[0016] In the picture: 01. Manhole cover base; 02. Manhole cover outer frame; 03. Cover body; 041. Multi-angle flow guide cover; 043. Filter base; 044. Filter holes; 045. Extended sleeve; 046. Tube sleeve seat; 047. Second connecting ring; 048. Telescopic column; 049. First spring; 0410. First connecting ring; 05. Openable grating; 051. Primary drain outlet; 052. End ring; 053. Long guide rod; 054. First transmission bushing; 055. Rectangular frame; 056. Ball bearing assembly; 057. Arc track; 0571. Inclined surface; 0572. Plane; 058. Base plate; 059. Short guide rod; 0510. Fixing base; 0511. Telescopic rod; 05111. Telescopic sleeve; 05112. Extension Telescopic rod body; 05113, Third spring; 0512, Hinge; 0513, Second transmission bushing; 0514, Fixed rail; 0515, Transmission bar; 0516, Connecting block; 0517, Second spring; 0518, Limiting post; 0519, Rack; 0520, Rotating shaft; 0521, Grating plate; 0522, Transmission gear; 0523, Long groove; 0524, Flexible steel wire rope; 06. Water turbine rotation mechanism; 061. Hollow frame; 062. Impeller; 063. Support plate; 064. Centrifugal clutch mechanism; 0640. Inner ring; 0641. Centrifugal chute; 0642. Clutch slider; 0643. Reset elastic element; 065. Transmission friction ring; 066. Bracket; 067. Baffle; 068. Secondary drain outlet; 069. Mounting block; 0610. Spring; 07. Central floor drain. Detailed Implementation

[0017] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. The various embodiments of this invention are described in detail below with reference to the accompanying drawings. Example 1

[0018] Please see Figures 1 to 17The present invention preferably provides the following technical solution: a centrifugal clutch-type drainage manhole cover, comprising: a supporting base frame; a manhole cover body, the manhole cover body being disposed on top of the supporting base frame, the manhole cover body including a cover 03, the cover 03 having annular and spaced primary drainage outlets 051 and secondary drainage outlets 068, and an opening and closing grid plate 05 connected to the bottom of the manhole cover body below the primary drainage outlets 051; a rotating valve plate assembly, the rotating valve plate assembly being disposed below the secondary drainage outlets 068 and connected to the bottom of the manhole cover body; and multiple... The multi-antennae guide cover 041 is placed below the cover 03 and guides and collects water flow. The receiving filter base 043 is mounted on the support frame and acts on the bottom of the multi-antennae guide cover 041 to receive and filter rainwater discharged from the primary drain outlet 051 and the secondary drain outlet 068. A pull-rope transmission assembly connects the receiving filter base 043 and the opening / closing grid plate 05. When rainfall begins, the opening / closing grid plate 05 is positioned relative to the primary drain outlet. When outlet 051 is set in parallel, it is for normal drainage. When the rainfall increases, the filter base 043 quickly accumulates water and becomes heavy, pulling down the pull rope transmission assembly. This causes the openable grid plate 05 to deflect and open relative to the primary drainage outlet 051 to perform primary drainage. The gear transmission assembly built into the openable grid plate 05 is used to drive the grid to rotate and discharge the blockage between the grid channels. The water wheel rotation mechanism 06 is located at the bottom of the multi-antenna flow guide cover 041 and is assembled with the support base. The centrifugal clutch mechanism 064 is connected to the water wheel rotation mechanism 06. The centrifugal clutch mechanism 064 extends to the position of the secondary drainage outlet 068 and acts with the rotary valve plate assembly. Rainwater flows along the multi-antenna flow guide cover 041 to the water wheel rotation mechanism 06 and drives it to rotate. When the primary drainage volume continues to increase, the water wheel rotation mechanism 06 rotates at high speed and reaches the trigger value of the centrifugal clutch mechanism 064, which drives the rotary valve plate assembly to work, causing the secondary drainage outlet 068 to open and perform secondary drainage.

[0019] In this application, such as Figure 1 , 5 As shown in Figure 8, by setting an openable grid plate 05 below the primary drainage outlet 051 and keeping it slightly open under normal rainfall, daily drainage can be carried out, and pollutants and road washouts in the initial rainwater can be effectively intercepted. When the rainfall increases, the filter chassis 043 quickly accumulates water and becomes heavier, and the openable grid plate 05 is automatically pulled open by the pull rope transmission component. At this time, the openable grid plate 05 is fully opened, realizing the primary drainage action. This gradual drainage method can automatically expand the drainage capacity when the rainfall increases. Meanwhile, the invention integrates a gear transmission component inside the openable grid plate 05. During the first-stage drainage process when the grid plate is opened, the gear transmission component synchronously drives the grid to rotate, actively expelling and cleaning up debris such as leaves, plastic bags, and mud that are clamped or blocked between the grid channels. This design effectively solves the problem that traditional drainage well cover grids are easily blocked by debris, leading to drainage failure.

[0020] Secondly, by integrating a water turbine rotation mechanism 06 at the bottom converging position of the multi-antennae guide cover 041, such as... Figure 1 As shown, the multi-angle guide cover 041 includes several guide arms distributed radially. Each guide arm extends from below the cover towards the central convergence point, forming a rainwater guide channel. It works in conjunction with a centrifugal clutch mechanism 064 connected to the water turbine rotation mechanism 06, as shown... Figure 5 , 7 As shown in Figure 11, when the primary drainage volume continues to increase, the water turbine rotating mechanism 06 rotates at high speed and reaches the trigger value of the centrifugal clutch mechanism 064, which drives the rotating valve plate assembly to work, causing the secondary drainage port 068 to open and carry out secondary drainage. The above design uses the gravity trigger of the filter chassis 043 to open the primary drainage outlet 051, and the centrifugal trigger of the water turbine rotation mechanism 06 to open the secondary drainage outlet 068. This allows the drainage capacity of the manhole cover to automatically change in a stepped manner according to the rainfall intensity. That is, it maintains a small flow of drainage during normal rainfall, automatically opens the primary drainage outlet 051 during moderate to heavy rainfall, and further opens the secondary drainage outlet 068 during heavy rain or torrential rain. This not only ensures the safety of daily road traffic, but also reserves sufficient drainage redundancy capacity for extreme weather. At the same time, such as Figure 1 , 8 As shown, the multi-antenna guide cover 041 can effectively guide and collect rainwater from different locations of the primary drain outlet 051 and the secondary drain outlet 068, ensuring that the rainwater impacts the water turbine rotating mechanism 06 at the optimal angle and speed, thereby improving the utilization efficiency of water kinetic energy. In addition, the trigger value of the centrifugal clutch mechanism 064 can be flexibly set and adjusted according to the rainfall characteristics and drainage needs of different regions. By adjusting the elastic coefficient of the reset component or the counterweight mass of the slider in the centrifugal clutch mechanism 064, the critical opening speed of the secondary drainage outlet 068 can be changed, so that the same set of manhole cover structure can adapt to the differentiated use needs of rainy areas in the south and dry areas in the north.

[0021] Furthermore, the supporting base includes a manhole cover seat 01, a manhole cover outer frame 02 fixed to the top of the manhole cover seat 01, and a stepped groove provided in the inner ring of the manhole cover outer frame 02 for overlapping the cover body 03, such as... Figure 1 , 4 As shown in Figures 5 and 8. Example 2

[0022] In another embodiment of the present invention, each openable grid plate 05 includes two end rings 052 disposed at the bottom of the cover 03, a long light rod 053 fixed to the two end rings 052, and two first transmission bushings 054 sleeved on the long light rod 053. The two first transmission bushings 054 are fixedly connected to a rectangular frame 055, and grid blades are arrayed inside the rectangular frame 055. A base plate 058 is also fixed to the middle part of the rectangular frame 055 near the first transmission bushings 054, and short light rods 059 are disposed between the base plates 058. A fixing seat 0510 is fixed to the bottom of the cover 03. The telescopic rod 0511 has one end hinged to the fixed base 0510 via a hinge 0512, and the other end is provided with a second transmission bushing 0513 which is sleeved on the outer periphery of the short smooth rod 059. When the telescopic rod 0511 extends or retracts through the power provided by the pull rope transmission assembly, it drives the two first transmission bushings 054 on the rectangular frame 055 to deflect around the long smooth rod 053 as the axis, thereby realizing the opening and closing of the corresponding first-stage drainage outlet 051. It also includes a meshing transmission assembly provided on the side of the rectangular frame 055 near the two first transmission bushings 054, which is used to drive several grid blades to deflect.

[0023] Furthermore, each grid blade includes a pivot 0520 that is laterally mounted inside a rectangular frame 055, and a grid plate body 0521 that is fixed to the pivot 0520.

[0024] Furthermore, the telescopic rod 0511 includes a telescopic sleeve 05111 and a telescopic rod body 05112, wherein the telescopic sleeve 05111 and the telescopic rod body 05112 are embedded at opposite ends, and their opposite ends are respectively assembled with the hinge 0512 and the second transmission bushing 0513; the rope transmission assembly includes a flexible steel wire rope 0524 fixed to the end of the telescopic rod body 05112 away from the second transmission bushing 0513, and the end of the flexible steel wire rope 0524 away from the telescopic rod body 05112 passes through the first through hole at the end of the telescopic sleeve 05111 and the second through hole opened on the multi-antenna flow guide cover 041 and is fixedly connected to the receiving filter base 043; and a third spring 05113 sleeved on the outer periphery of the flexible steel wire rope 0524 and connected between the telescopic sleeve 05111 and the telescopic rod body 05112.

[0025] like Figure 11 , 14 15 and Figure 16 , 17 As shown, the rectangular frame 055 is fitted onto the long smooth rod 053 via two first transmission bushings 054 on one side, while its other side can extend beyond the primary drain outlet 051 and enable the opening and closing of the primary drain outlet 051, as detailed below. Figure 14 , 15As shown, one end of the telescopic rod 0511 is slidably installed with the short smooth rod 059 via the second transmission bushing 0513, and the other end is hinged to the fixed seat 0510 fixed to the bottom of the cover 03 via the hinge 0512, and the corresponding pull rope transmission assembly, such as Figure 5 , 12 As shown in 14 and 16, one end of the flexible steel wire rope 0524 is fixed to the telescopic sleeve 05111, and the other end passes through the first through hole at the end of the telescopic sleeve 05111 and the second through hole opened on the multi-antenna flow guide cover 041 in sequence, and is fixed to the receiving filter base 043. With the help of the third spring placed inside the telescopic sleeve 05111 and at the end of the telescopic rod 05112, the rectangular frame 055 opens and closes the primary drain outlet 051. When daily drainage is required, the gaps between several grid blades can remain open under normal rainfall to carry out daily drainage and effectively intercept pollutants and road erosion materials in the initial rainwater. When the rainfall increases, the filter chassis 043 quickly accumulates water and becomes heavier. Through the flexible steel wire rope 0524 of several pull rope transmission components, it automatically pulls the rectangular frame 055 containing several openable grid plates 05 to deflect around the long light rod 053 as the axis. At this time, the openable grid plates 05 are fully opened, realizing the first-level drainage action. This gradual drainage method can automatically expand the drainage capacity when the rainfall increases. It is worth noting that the sliding of the two first transmission bushings 054 relative to the long light rod 053 and the sliding of the second transmission bushing 0513 relative to the short light rod 059 is to achieve the deflection of the grid blades. For the specific principle, please refer to Example 3. Example 3

[0026] In another embodiment of the present invention, the meshing transmission assembly includes a ball assembly 056 disposed on a rectangular frame 055, wherein the ball assembly 056 and two first transmission bushings 054 are distributed on adjacent sides of the rectangular frame 055; an arc-shaped track 057 fixed to the bottom of the cover 03, wherein the sidewall of the arc-shaped track 057 is provided with an inclined surface 0571 and a flat surface 0572 in sequence along the opening direction of the rectangular frame 055, and the inclined surface 0571 and the flat surface 0572 can contact the ball assembly 056; and an elongated groove 0523 formed on the side of the rectangular frame 055 near the two first transmission bushings 054; one end of each rotating shaft 0520 extends A transmission gear 0522 is fixed inside the long groove 0523; a fixed rail 0514 is fixed to the side of the rectangular frame 055 near the two first transmission bushings 054, a transmission bar 0515 is provided inside the fixed rail 0514, and a number of racks 0519 meshing with the transmission gears 0522 are fixed inside the transmission bar 0515, and a second spring 0517 is provided between the lower part of its outer side and the connecting block 0516 which is fixed to the lower part of the fixed rail 0514; it also includes a limiting post 0518 fixed to the upper part of the outer side of the transmission bar 0515, and the limiting post 0518 is placed below the telescopic rod 0511 and is used to limit the telescopic rod 0511.

[0027] like Figure 14 , 15 As shown in Figure 16, the elongated groove 0523 provided in this embodiment is opened on the side of the rectangular frame 055 near the two first transmission bushings 054. At the same time, several rotating shafts 0520 extend into the elongated groove 0523 and are fixed with transmission gears 0522 at the ends away from the grid plate body 0521. The transmission bar 0515 slidably installed on the fixed rail 0514 is firstly fixed to the side of the rectangular frame 055 near the two first transmission bushings 054. Secondly, several racks 0519 meshing with transmission gears 0522 are fixed on the inner side of the transmission bar 0515. The limiting post 0518 provided on the upper outer side of the bar is limited below the telescopic rod 0511. The connecting block 0516 provided on the lower outer side of the bar is connected to the connecting block 0516 provided on the fixed rail 0514 by a second spring 0517. Therefore, when the rainfall exceeds the bearing capacity of the filter receiving chassis 043 and drives the filter receiving chassis 043 to move downwards, such as Figure 5 , 12 As shown in 14, 15, and 16, at this time, the flexible steel wire rope 0524 can pull the telescopic rod 05112 back into the telescopic sleeve 05111 and compress the third spring. This process, on the one hand, causes the rectangular frame 055 to deflect around the long smooth rod 053 as an axis, realizing the overall opening of the primary drainage outlet 051; on the other hand, it causes the ball bearing assembly 056 to roll sequentially along the inclined surface 0571 and the plane 0572 set on the surface of the arc track 057. Due to the slope design of the inclined surface 0571, the rectangular frame 055 can be opened as a whole. Figure 16 When the rod is lifted, the two first transmission bushings 054 move upwards on the outer periphery of the long smooth rod 053, while the second transmission bushing 0513 moves downwards adaptively on the surface of the rack 0519. Simultaneously, because the fixed rail 0514 is fixed to the rectangular frame 055, as... Figure 14 As shown, in principle, the second spring 0517 can pull the transmission bar 0515 upward inside the fixed rail 0514, but since the limiting post 0518 is placed below the telescopic rod 0511, the upward movement of the transmission bar 0515 is restricted. During the upward movement of the rectangular frame 055, the position of the transmission bar 0515 remains unchanged, while the second spring 0517 is gradually compressed. Here, several transmission gears 0522 inside the rectangular frame 055 can rotate along the surface of the rack 0519 on the inner side of the transmission bar 0515, thereby realizing the self-rotation of several grid plates 0521 and achieving self-cleaning. Conversely, when the rainfall decreases, the ball bearing assembly 056 moves in the opposite direction. This process causes the rectangular frame 055 to reset under the action of the third spring, and under the action of the second spring 0517, the rectangular frame 055 moves downward, thereby achieving the simultaneous reset of several grid plates 0521. Example 4

[0028] In another embodiment of the present invention, the receiving filter base 043 has a wavy cross-section disc structure, and a plurality of filter holes 044 are formed on the receiving filter base 043. The receiving filter base 043 is fixedly connected to a plurality of flexible steel wire ropes 0524 containing pull rope transmission components. An extension sleeve 045 and a tube sleeve seat 046 are coaxially arranged and distributed vertically upwards and downwards. The extension sleeve 045 is fixed in the middle of the receiving filter base 043 and placed at the converging position of the multi-antennae flow guide cover 041. The tube sleeve seat 045... 6 is fixed at the bottom center of the manhole cover seat 01; and a first connecting ring 0410 and a second connecting ring 047 are respectively set on the extension sleeve edge 045 and the pipe sleeve seat 046. The bottom of the first connecting ring 0410 is fixed with a telescopic column 048, and the outer periphery of the second connecting ring 047 is provided with a telescopic hole. Several telescopic columns 048 can be inserted into several telescopic holes and are respectively fitted with a first spring 049. Each first spring 049 is connected to the opposite face of the first connecting ring 0410 and the second connecting ring 047.

[0029] like Figure 2 , 5 As shown in Figure 6, the extended sleeve 045 and the pipe sleeve seat 046 are distributed on the upper and lower sides and form a drainage channel. The extended sleeve 045 is located at the convergence position of the multi-antenna flow guide cover 041 and is provided with a receiving filter base 043. Several filter holes 044 opened on the receiving filter base 043 are used to filter impurities, and they are connected to the flexible steel wire rope 0524 where several rope transmission components are located. Meanwhile, several sets of telescopic columns 048 and first springs 049 are provided between the first connecting ring 0410 and the second connecting ring 047, which are respectively fixed to the outer periphery of the extended sleeve 045 and the pipe sleeve seat 046. In each set, the first spring 049 is sleeved around the outer periphery of the telescopic columns 048 distributed in the same set and connected between the first connecting ring 0410 and the second connecting ring 047. When the water volume in the middle of the filter base 043 exceeds the supporting capacity of the first springs 049, the first springs 049 are compressed, and the extended sleeve... 045. The receiving filter base 043 adaptably moves downward and pulls several flexible steel wire ropes 0524 downward, realizing the opening of several rectangular frames 055 and the rotation of several grid plates 0521. At this time, it is a heavy rainfall process. At this time, the receiving filter base 043 descends and separates from the multi-antenna flow guide cover 041 to form an external drainage section. At this time, part of the water flow can be discharged outward along the receiving filter base 043 and carry away the garbage on it. The other part of the water flow acts on the water wheel rotation mechanism 06, making it rotate at high speed. Example 5

[0030] In another embodiment of the present invention, the water turbine rotating mechanism 06 includes a hollow frame 061 fixed to the bottom of the inner sleeve seat 046, an impeller 062 is provided on the top of the hollow frame 061; and a support plate 063 assembled with the top of the impeller 062, and the top of the support plate 063 is assembled with a centrifugal clutch mechanism 064.

[0031] like Figure 5 , 7 As shown in Figures 9 and 11, the impeller 062 provided in this application is mounted on the outlet of the manhole cover. When the water flow impacts the impeller 062, the water flow is forced to change its speed and direction under the constraint of the blade, resulting in a change in momentum, that is, the reduction of the kinetic energy of the water flow and its conversion into the mechanical energy of the impeller 062, thereby realizing the rapid rotation of the impeller 062, and thus realizing the centrifugal rotation of the centrifugal clutch mechanism 064.

[0032] Furthermore, the centrifugal clutch mechanism 064 includes an inner ring 0640, and the centrifugal sliding grooves 0641 formed on the side wall of the inner ring 0640 are all provided with clutch sliders 0642, and a reset elastic element 0643 is connected between the clutch sliders 0642 and the centrifugal sliding grooves 0641.

[0033] The centrifugal clutch mechanism 064 connected to the impeller 062 here is a mature existing technology, such as... Figure 5The clutch sliders 0642 are connected to the inner ring 0640 through several reset elastic elements 0643. When the impeller 062 rotates due to the scouring of the water flow, when the rotational power reaches the trigger value of the centrifugal clutch mechanism 064, the clutch sliders 0642 will expand outward under the action of centrifugal force. At this time, the clutch sliders 0642 and the rotary valve plate assembly are damped and driven, thereby realizing the deflection of the rotary valve plate assembly, which in turn causes the secondary drain ports 068 to switch open and close.

[0034] Furthermore, the rotary valve plate assembly includes a bracket 066 that slides and limits the bottom of the cover 03, wherein a transmission friction ring 065 fixed to the bottom of the bracket 066 is placed on the outer periphery of the centrifugal clutch mechanism 064, and a baffle 067 is fixed to its outer periphery, and a plurality of baffles 067 can block a plurality of secondary drain outlets 068; and a mounting block 069 fixed to the bottom of the cover 03 and spaced apart from the plurality of baffles 067, and a spring piece 0610 is connected between each mounting block 069 and its adjacent baffle 067.

[0035] like Figure 5 , 7 As shown in Figure 11, the bracket 066 and the cover 03 are slidably installed in a limiting manner. The preferred method of sliding installation here is the connection of a circular groove and a circular slider. Because the transmission friction ring 065 at the bottom of the bracket 066 is located on the outer periphery of the centrifugal clutch mechanism 064, when several clutch sliders 0642 move outward by centrifugal force and are damped and connected to the transmission friction ring 065, the transmission friction ring 065, the bracket 066 and several baffles 067 can be deflected. However, because several baffles 067 are connected to several mounting blocks 069 fixed at the bottom of the cover 03 by spring pieces 0610, when the centrifugal clutch mechanism 064 rotates rapidly, causing several clutch sliders 0642 to rub against the inner wall of the transmission friction ring 065, when the frictional force is greater than the elastic force of the spring piece 0610, several baffles 067 are separated from the secondary drain outlet 068, thus realizing secondary drainage. As several baffles 067 deflect, the compressed spring 0610 gradually increases its elastic force. When its elastic force is greater than the friction between the clutch slider 0642 and the transmission friction ring 065, the outwardly expanding clutch sliders 0642 are in contact with the centrifugal clutch mechanism 064, but the centrifugal clutch mechanism 064 itself will slip and rotate, while the transmission friction ring 065 remains stationary. At this time, several secondary drain ports 068 remain open. When the water volume decreases and the impeller 062 slows down its rotation speed, the centrifugal clutch mechanism 064 reduces the centrifugal force and causes several clutch sliders 0642 to retract. Here, several baffles 067, under the action of several spring plates 0610, re-close several secondary drain outlets 068.

[0036] Furthermore, a central drain 07 is also provided in the middle of the cover 03. The central drain 07 includes a body, a filter screen, and other basic structures, which are existing mature technologies and will not be described in detail here. Figure 1 As shown, this is used to improve drainage efficiency.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms “installation,” “connection,” “linking,” “fixing,” etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part. There are various ways to install detachably, such as by using a plug-in and snap-fit ​​method, or by using a bolt connection, etc.

[0038] The above embodiments, which describe the specific features of the present invention, are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above description of the invention shall fall within the scope of protection of the present invention.

Claims

1. A centrifugal clutch-type drainage well cover, characterized in that... ,include: Support frame; The manhole cover body is set on the top of the support base frame. The manhole cover body includes a cover body (03). The cover body (03) has a ring-shaped and spaced primary drainage outlet (051) and a secondary drainage outlet (068). The bottom of the manhole cover body located below the primary drainage outlet (051) is connected to an openable grid plate (05). A rotary valve plate assembly is positioned below the secondary drain outlet (068) and connected to the bottom of the manhole cover body; A multi-antennae flow guide cover (041) is placed below the cover (03) and guides and converges the water flow. The receiving filter chassis (043) is set on the support base and acts on the bottom of the multi-antenna flow guide cover (041). It is used to receive and filter the rainwater discharged from the primary drain outlet (051) and the secondary drain outlet (068). The receiving filter chassis (043) and the pull rope transmission assembly connected between the receiving filter chassis (043) and the opening and closing grid plate (05) are used for normal drainage when the rainfall is initially set and the opening and closing grid plate (05) is set parallel to the primary drain outlet (051). When the rainfall increases, the receiving filter chassis (043) itself quickly accumulates water and becomes heavy, pulling the pull rope transmission assembly downward, so that the opening and closing grid plate (05) deflects and opens relative to the primary drain outlet (051) to perform the primary drainage action. The gear transmission assembly inside the opening and closing grid plate (05) is used to drive the grid to rotate to discharge the blockage between the grid channels. The water turbine rotating mechanism (06) is located at the converging position at the bottom of the multi-antenna guide cover (041) and is assembled with the support base frame. The centrifugal clutch mechanism (064) is connected to the water turbine rotating mechanism (06). The centrifugal clutch mechanism (064) extends to the position of the secondary drain outlet (068) and acts with the rotating valve plate assembly. Rainwater flows along the multi-antenna guide cover (041) to the water turbine rotating mechanism (06) and drives it to rotate. When the primary drainage volume continues to increase, the water turbine rotating mechanism (06) rotates at high speed and reaches the trigger value of the centrifugal clutch mechanism (064), which drives the rotating valve plate assembly to work, so that the secondary drain outlet (068) opens and performs secondary drainage.

2. The centrifugal clutch-type drainage well cover according to claim 1, characterized in that: The supporting base includes a manhole cover seat (01), a manhole cover outer frame (02) fixed to the top of the manhole cover seat (01), and a step groove set in the inner circle of the manhole cover outer frame (02) for overlapping of the cover body (03).

3. A centrifugal clutch-type drainage well cover according to claim 2, characterized in that: Each of the opening and closing grid plates (05) includes two end rings (052) disposed at the bottom of the cover (03), a long light rod (053) fixed to the two end rings (052), and two first transmission bushings (054) sleeved on the long light rod (053). The two first transmission bushings (054) are fixedly connected to a rectangular frame (055), and grid blades are arrayed inside the rectangular frame (055). A base plate (058) is also fixed in the middle of the rectangular frame (055) near the first transmission bushing (054), and short light rods (059) are provided between the base plates (058). And a fixing seat (0510) fixed to the bottom of the cover (03); Telescopic rod (0511), one end of which is hinged to the fixed seat (0510) via a hinge (0512), and the other end of which is provided with a second transmission bushing (0513) which is sleeved on the outer periphery of the short smooth rod (059). When the telescopic rod (0511) is extended or retracted by the power provided by the pull rope transmission assembly, it is used to drive the two first transmission bushings (054) on the rectangular frame (055) to deflect around the long smooth rod (053) as the axis, thereby realizing the opening and closing of the corresponding first-level drain outlet (051); It also includes a meshing transmission assembly disposed on the side of the rectangular frame (055) near the two first transmission bushings (054) for driving several grid blades to deflect.

4. A centrifugal clutch-type drainage well cover according to claim 3, characterized in that: Each of the grid blades includes a pivot (0520) that is laterally mounted inside the rectangular frame (055), and a grid plate (0521) that is fixed to the pivot (0520).

5. A centrifugal clutch-type drainage well cover according to claim 3, characterized in that: The telescopic rod (0511) includes a telescopic sleeve (05111) and a telescopic rod body (05112) that are telescopically installed. The telescopic sleeve (05111) and the telescopic rod body (05112) are embedded in each other at opposite ends, and their opposite ends are respectively assembled with the hinge (0512) and the second transmission bushing (0513). The pull rope transmission assembly includes a flexible steel wire rope (0524) fixed to the end of the telescopic rod (05112) away from the second transmission bushing (0513), and the end of the flexible steel wire rope (0524) away from the telescopic rod (05112) passes through the first through hole at the end of the telescopic sleeve (05111), the second through hole opened on the multi-antenna flow guide cover (041), and is fixedly connected to the receiving filter base (043); And a third spring (05113) sleeved on the outer periphery of the flexible steel wire rope (0524) and connected between the telescopic sleeve (05111) and the telescopic rod (05112).

6. A centrifugal clutch-type drainage well cover according to claim 4, characterized in that: The meshing transmission assembly includes a ball assembly (056) disposed on the rectangular frame (055), and the ball assembly (056) and two first transmission bushings (054) are distributed on adjacent sides of the rectangular frame (055). An arc-shaped track (057) is fixed at the bottom of the cover (03). The sidewall of the arc-shaped track (057) is provided with an inclined surface (0571) and a flat surface (0572) in sequence along the opening direction of the rectangular frame (055). The inclined surface (0571) and the flat surface (0572) can contact the ball assembly (056). And a long groove (0523) opened on the side of the rectangular frame (055) near the two first transmission bushings (054); Each of the aforementioned shafts (0520) extends at one end into the interior of the elongated groove (0523) and is fixed with a transmission gear (0522). A fixed rail (0514) is fixed on the side of the rectangular frame (055) near the two first transmission bushings (054). A transmission bar (0515) is provided inside the fixed rail (0514), and a rack (0519) meshing with a plurality of transmission gears (0522) is fixed inside the transmission bar (0515). A second spring (0517) is provided between the lower outer part of the rack (0515) and the connecting block (0516) which is fixed to the lower part of the fixed rail (0514). It also includes a limiting post (0518) fixed on the upper outer side of the transmission bar (0515), and the limiting post (0518) is placed below the telescopic rod (0511) and used to limit the telescopic rod (0511).

7. A centrifugal clutch-type drainage well cover according to claim 2, characterized in that: The receiving filter base (043) has a plate structure with a wave-shaped cross section, and a number of filter holes (044) are opened on the receiving filter base (043). The receiving filter base (043) is fixedly connected to a number of flexible steel wire ropes (0524) where the pull rope transmission components are located. The extension sleeve (045) and the pipe sleeve seat (046) are coaxially arranged and distributed vertically. The extension sleeve (045) is fixed in the middle of the receiving filter chassis (043) and placed at the convergence position of the multi-antenna flow guide cover (041). The pipe sleeve seat (046) is fixed in the bottom center of the well cover seat (01). The first connecting ring (0410) and the second connecting ring (047) are respectively disposed on the extension sleeve edge (045) and the tube sleeve seat (046), and the bottom of the first connecting ring (0410) is fixed with a telescopic column (048), and the outer periphery of the second connecting ring (047) is provided with a telescopic hole. A plurality of the telescopic columns (048) can be inserted into a plurality of telescopic holes and respectively fitted with a first spring (049), and each first spring (049) is connected to the opposite face of the first connecting ring (0410) and the second connecting ring (047).

8. A centrifugal clutch-type drainage well cover according to claim 7, characterized in that: The water turbine rotating mechanism (06) includes a hollow frame (061) fixed inside the bottom of the pipe sleeve seat (046), and an impeller (062) is provided on the top of the hollow frame (061). And a support plate (063) assembled to the top of the impeller (062), and the top of the support plate (063) is assembled to the centrifugal clutch mechanism (064).

9. A centrifugal clutch-type drainage well cover according to claim 8, characterized in that: The centrifugal clutch mechanism (064) includes an inner ring (0640), and the centrifugal slide grooves (0641) circumferentially opened on the side wall of the inner ring (0640) are all provided with clutch sliders (0642), and a reset elastic element (0643) is connected between the clutch sliders (0642) and the centrifugal slide grooves (0641).

10. A centrifugal clutch-type drainage well cover according to claim 9, characterized in that: The rotary valve plate assembly includes a bracket (066) that slides and limits the bottom of the cover (03). The transmission friction ring (065) fixed at the bottom of the bracket (066) is placed on the outer periphery of the centrifugal clutch mechanism (064). A baffle (067) is fixed on its outer periphery, and several baffles (067) can block several secondary drain outlets (068). And an mounting block (069) is fixed in a ring at the bottom of the cover (03) and distributed at intervals with a plurality of baffles (067), and each mounting block (069) is connected to a spring piece (0610) between it and its adjacent baffle (067).

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