A safe and power-free self-lifting rainwater inlet device

Abstract

The present invention belongs to the technical field of rainwater inlets, and discloses a safe and power-free self-lifting rainwater inlet device, comprising: a water accumulation sensing component, which is arranged on the inner well wall of the rainwater well; a seesaw trigger arm, which is hinged on the outer wall of the rainwater well, one end of the seesaw trigger arm passes through the rainwater well and is in a toggling connection with the trigger part of the water accumulation sensing component, and a vertical pressure rod is connected to a position near the other end of the seesaw trigger arm; a power control switch component, the other end of the seesaw trigger arm extends into the interior of the power control switch component; a power supply component, which is arranged in the rainwater well and is electrically connected to the power control switch component; a jacking component, which is used for jacking up the rainwater grate; a return spring, one end of which is fixed on the well wall of the rainwater well and the other end of which is fixed to the bottom end of the rainwater grate; and a protective pedal component, one side of which is hinged to the outer periphery of the rainwater grate and the other side of which is in contact with the ground. While improving the drainage efficiency, the device adds a protection device for pedestrians and vehicles, and has high safety.

Description

Technical Field

[0001] The invention relates to the technical field of municipal engineering rainwater inlets, and more particularly to a safe and unpowered self-lifting rainwater inlet device. Background Art

[0002] A rainwater inlet is a water inlet structure that collects rainwater on the ground through a drainage pipe. Rainwater on the street surface first flows into the drainage pipe through the rainwater inlet through the connecting pipe. The rainwater inlet plays an important role in collecting ground-converged rainwater, removing ground water, and draining urban roads.

[0003] In recent years, waterlogging disasters have occurred frequently, seriously affecting people's normal lives. The country regards urban waterlogging control as a long-term task, and has carried out a lot of research work on improving the drainage capacity of municipal drainage facilities. During rainfall, the fallen leaves of trees on both sides of the road, together with mud, garbage and other debris, will flow to the rainwater outlet with rainwater, and accumulate in the rainwater outlet through the rainwater grate, causing varying degrees of blockage, seriously affecting the drainage efficiency of the rainwater outlet. Therefore, when water accumulates, it is usually necessary to manually guard and use manpower to open the rainwater outlet to clean up the garbage in the rainwater outlet to increase the flow of water and quickly drain the water. However, this method not only requires more guards and increases labor costs, but also rainwater grates are mostly located on the road, and the life safety of the staff is difficult to guarantee. Secondly, the opened rainwater outlet is located in the waterlogged area of the road without any cover, and it is difficult to find it in rainy days due to blurred vision, which increases the risk of pedestrians and vehicles falling into the rainwater well, and becomes a safety hazard in the normal movement of pedestrians and vehicles.

[0004] Therefore, in order to solve the above problems, various new types of rainwater outlets have emerged. For example, in the prior art, the publication number is CN115434410A, and the name is a safe rainwater outlet device for automatically lifting and draining water through hydraulic power. It includes: a fixed shell, a cylindrical liquid bag arranged inside the fixed shell and arranged in sequence from bottom to top, a pressure plate, a cylindrical water storage box, and a plunger-type lifting cylinder. The plunger-type lifting cylinder is connected to the liquid outlet of the cylindrical liquid bag through a connecting pipe, and the lifting rod of the plunger-type lifting cylinder abuts against the bottom end of one side of the rainwater grate. The rainwater grate of the device can automatically lift the corresponding height according to the actual situation of water accumulation, so as to achieve the purpose of rapid drainage. At the same time, the cylindrical water storage box can also play a certain storage purpose for the waterlogging while adjusting the lifting of the rainwater grate, relieving the pressure of the drainage network; and the automatic lifting process can be completed only by hydraulic power, without adding any electronic equipment, and the safety and stability of the overall equipment are highly guaranteed.

[0005] However, there are still some problems with the above-mentioned rainwater grates during actual use. For example, when draining the accumulated water at the rainwater inlet, since one side of the rainwater grate is lifted by a certain height, a certain height difference will inevitably be formed at the rainwater inlet, and this height difference cannot be eliminated when pedestrians pass by, which will pose a certain safety hazard to passing pedestrians and vehicles.

[0006] Therefore, how to provide a safer and non-powered self-lifting rainwater inlet device is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0007] In view of this, the present invention provides a rainwater inlet that can identify accumulated water and automatically lift. While improving the drainage efficiency, a protection device is added. When pedestrians and vehicles pass by, the switch can be triggered to make the rainwater grate automatically fall back, which has high safety. At the same time, it can be automatically reset when the accumulated water subsides and does not require manual intervention, a safe and non-powered self-lifting rainwater inlet device.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A safe and non-powered self-lifting rainwater inlet device is installed at the wellhead of a rainwater well and is located below the rainwater grate at the wellhead of the rainwater well, and includes:

[0010] An accumulated water sensing component, which is arranged on the inner well wall of the rainwater well and close to the wellhead;

[0011] A seesaw trigger arm, which is hinged on a fixed plate on the outer well wall of the rainwater well. One end of the seesaw trigger arm passes through a first through hole on the well wall of the rainwater well and is in a toggle connection with the trigger part of the accumulated water sensing component, and is used for when the accumulated water sensing component senses the accumulated water at the wellhead, the trigger part toggles one end of the seesaw trigger arm to descend. A vertical pressure rod is connected to a position near the other end of the seesaw trigger arm, and the vertical pressure rod is located below the rainwater grate;

[0012] A power control switch component, which is arranged on the fixed plate and on one side of the seesaw trigger arm. The other end of the seesaw trigger arm extends into the power control switch component to trigger the on-off of the power control switch component through the up and down movement of the other end of the seesaw trigger arm;

[0013] A power supply component, which is arranged in the rainwater well and is electrically connected to the power control switch component;

[0014] A jacking component, which is arranged at the top end of the power control switch component and is electrically connected to the power control switch component, and is used for jacking up the rainwater grate;

[0015] A return spring, the return spring is arranged outside the rainwater well, one end of the return spring is fixed on a fixing seat on the well wall of the rainwater well above the first through hole, and the other end is fixedly connected to the bottom end surface of the rainwater grate;

[0016] A protective pedal assembly, there is at least one protective pedal assembly, and one side is hinged to the outer peripheral side of the rainwater grate, and the other side of the protective pedal assembly is in sliding or rolling contact with the ground.

[0017] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a safe, non-powered, self-lifting rainwater inlet device. When there is no rainfall, the device maintains its initial state, that is, the reset spring has no deformation and no tension, and the rainwater grate covers the wellhead of the rainwater well (the device is in the first state at this time). When the water accumulation sensing component recognizes that water has accumulated in the rainwater inlet, its trigger part pushes one end of the seesaw trigger arm downward to descend, while the other end of the seesaw trigger arm rises, thereby turning on the power control switch component. At this time, the power supply component supplies power to the lifting component. The jacking assembly works to lift the rain grate upward to a certain height. At this time, the return spring is stretched, and one side of the protective pedal assembly is lifted up with the rain grate, while the other side of the protective pedal assembly moves on the ground, so that the protective pedal assembly forms an inclined protective slope at the gap position formed by the height difference between the rain grate and the rainwater wellhead (the device is in the second state at this time), which effectively avoids the problem that there is a height difference between the existing rainwater grate and the rainwater wellhead after it is lifted and there is no protective device, which may easily bring certain safety hazards to passing pedestrians and vehicles. In addition, when a pedestrian or a vehicle passes by, they step on / press the inclined protective pedal assembly or the top of the rain grate for the first time. At this time, the rain grate feels the touch and is slightly pressed down. At this time, the rain grate presses the vertical pressure rod downward, and the vertical pressure rod presses down the other end of the seesaw trigger arm, so that the power control switch assembly is disconnected, and the power supply assembly no longer supplies power to the jacking assembly, and the jacking assembly does not work. The rain grate is pulled back to its original position by the return spring, that is, the rain grate is re-covered at the wellhead of the rainwater well to ensure the stability of the rain grate when pedestrians or vehicles pass by. When the pedestrian or vehicle moves away from the rain grate, the power control switch assembly is turned on again under the action of the water accumulation sensing assembly and the seesaw trigger arm, and the power supply assembly supplies power to the jacking assembly again, and the jacking assembly lifts the rain grate again. When the water accumulation at the rainwater wellhead identified by the water accumulation sensing component decreases, the trigger part of the water accumulation sensing component returns to the initial position and no longer contacts with one end of the seesaw trigger arm. The other end of the seesaw trigger arm drops under the gravity of the vertical pressure rod. At this time, the power control switch component is disconnected, and the power supply component no longer supplies power to the jacking component. The jacking component does not work, and the rainwater grate is pulled back to its original position by the reset spring and the rainwater grate's own gravity, and the protective pedal component also drops and resets accordingly. Therefore, the rainwater outlet device is a rainwater outlet that can identify water accumulation and automatically rises. While improving the drainage efficiency of the rainwater outlet, a protective pedal assembly is added. The device can be triggered when pedestrians and vehicles pass by, causing the rainwater grate to automatically fall back, which has high safety. At the same time, it can be automatically reset when the water recedes, without the need for manual intervention, reducing the cost of manual participation.

[0018] Furthermore, the water accumulation sensing component includes:

[0019] A water receiving tank, with one side and the top of the water receiving tank being open and located below the rain grate. The outer tank wall of the water receiving tank is fixedly connected to the inner well wall of the rain well near the wellhead. A drain hole is provided on the bottom of the water receiving tank;

[0020] A seesaw arm, which is hinged to the inner bottom surface of the water receiving tank through a support base. One end of the seesaw arm is connected with a floating ball;

[0021] A triggering vertical rod, which is the triggering part. One end of it is hinged to the other end of the seesaw arm, and the other end of the triggering vertical rod is in a toggling connection with one end of the seesaw - type triggering arm, for toggling one end of the seesaw - type triggering arm to descend.

[0022] The beneficial effects of adopting the above - mentioned technical solution are as follows: When there is no rainfall, the device is in the first state; when it rains, rainwater flows into the well through the rain grate, and part of the rainwater will flow into the water receiving tank. When the water flow rate at the rainwater inlet is small, the water that falls can be discharged into the rain well through the drain hole at the bottom of the water receiving tank. When the water flow rate at the rainwater inlet is too large and reaches the drainage capacity limit of the rain grate, that is, when there is water accumulation at the rainwater inlet, the water that falls into the water receiving tank cannot be discharged in time, forming water accumulation in the water receiving tank. When the water accumulation reaches a certain height, the floating ball floats upward, driving one end of the seesaw arm to rise, and the other end of the seesaw arm to descend. The triggering vertical rod toggles downward to make one end of the seesaw - type triggering arm descend, while the other end of the seesaw - type triggering arm rises, thereby making the power control switch assembly conduct. At this time, the power supply component supplies power to the jacking component, and the jacking component works to jack up the rain grate to a certain height. At this time, the reset spring is stretched, and one side of the protective pedal component rises following the rain grate, while the other side of the protective pedal component moves on the ground, so that the protective pedal component forms an inclined protective slope at the position of the gap formed by the height difference between the rain grate and the rain wellhead. At this time, the device is in the second state. When the water flow rate of the rainwater decreases, the water accumulation in the water receiving tank decreases, the floating ball falls back, and the device returns from the second state to the first state. Therefore, in this device, the floating ball can identify water accumulation and automatically trigger the action of the seesaw - type triggering arm, ultimately realizing the automatic lifting of the rain grate.

[0023] Furthermore, it also includes a support rod and a guide sleeve. One end of the support rod is fixedly connected to the inner well wall of the rain well, and the other end is fixedly connected to the guide sleeve. The triggering vertical rod is inserted into the guide sleeve.

[0024] The beneficial effects of adopting the above - mentioned technical solution are as follows: It ensures that the triggering vertical rod always moves vertically up and down without deviation, thereby effectively ensuring that the triggering vertical rod can normally toggle one end of the seesaw - type triggering arm.

[0025] Furthermore, the power control switch assembly includes:

[0026] A protection box body, the protection box body is arranged on the fixing plate and is located on one side of the seesaw type trigger arm, and the lifting assembly is arranged on the top of the protection box body;

[0027] A contact switch, the contact switch comprising an upper spring sheet and a lower spring sheet, the upper spring sheet and the lower spring sheet are respectively provided with two first contacts and a second contact that are in contact with or separated from each other, one end of the upper spring sheet and the lower spring sheet are both fixed to the top of the inner wall of the protective box, one end of the upper spring sheet is electrically connected to the lifting assembly, and one end of the lower spring sheet is electrically connected to the power supply assembly;

[0028] The other end of the seesaw type trigger arm passes through a second through hole on a side wall of the protective box and extends into the interior of the protective box, and the other end of the seesaw type trigger arm is movably connected to the other end of the lower spring sheet, for driving the other end of the lower spring sheet to move downward, thereby separating the first contact and the second contact, and one end of the vertical pressure rod is hingedly connected to a position on the seesaw type trigger arm close to the other end thereof.

[0029] The beneficial effect of adopting the above technical solution is: when the other end of the seesaw trigger arm rises, the other end of the seesaw trigger arm no longer presses the other end of the lower spring sheet, and the other end of the lower spring sheet moves upward under the action of its own elastic force, and then the second contact on the lower spring sheet contacts the first contact on the upper spring sheet. At this time, the power supply component supplies power to the lifting component, and the lifting component acts to lift the rain grate upward; when pedestrians or vehicles step on the rain grate or the rain grate descends under the action of the return spring and its own gravity, the other end of the seesaw trigger arm descends with the rain grate. At this time, the other end of the seesaw trigger arm pushes the other end of the lower spring sheet downward, and the second contact on the lower spring sheet separates from the first contact on the upper spring sheet. At this time, the power supply component no longer supplies power to the lifting component, and the lifting component no longer lifts the rain grate, so that the rain grate returns to its initial position.

[0030] Furthermore, elastic rubber waterproof rings are embedded in the first through hole and the second through hole.

[0031] The beneficial effects of adopting the above technical solution are: an elastic rubber waterproof ring is arranged on the first through hole to prevent the accumulated water in the water receiving box from seeping out of the rainwater well through the first through hole; an elastic rubber waterproof ring is arranged on the second through hole to prevent rainwater from seeping into the protective box through the second through hole and affecting the contact switch.

[0032] Further, it further includes a first guiding cylinder, the upper end of the first guiding cylinder is fixed to the bottom end of the rainwater grate, and the other end of the vertical pressing rod is inserted and connected to the other end of the first guiding cylinder; or, it further includes a second guiding cylinder and a support rod, one end of the support rod is fixed to the wall outside the rainwater well, and the other end is fixed to the second guiding cylinder, and the vertical pressing rod is arranged in the second guiding cylinder.

[0033] The beneficial effect of adopting the above technical solution is: it ensures that the vertical pressing rod moves up and down in the vertical direction without deviation, so that the rainwater grate can be normally pressed down onto the vertical pressing rod.

[0034] Further, the power supply assembly includes:

[0035] An impeller generator, which is arranged inside the rainwater well;

[0036] A battery, which is fixed in a fuse box buried outside the rainwater well, and one end of the battery is electrically connected to the lower spring piece.

[0037] The beneficial effect of adopting the above technical solution is: when rainwater flows into the rainwater well, the rainwater will push the impeller generator to generate electricity, and the electric energy generated by the impeller generator is stored in the battery, thereby realizing the self-power supply of the device, eliminating the need for an external power supply, and reducing the laying and investment costs of cables.

[0038] Further, the jacking assembly includes:

[0039] An electromagnet, which is fixed to the top end of the protective box body and is electrically connected to one end of the upper spring piece;

[0040] A permanent magnet, which is fixed to the bottom surface of the rainwater grate. When the electromagnet is powered on, a repulsive force is generated between the electromagnet and the permanent magnet to jack up the rainwater grate by a certain height.

[0041] The beneficial effect of adopting the above technical solution is: when the electromagnet is powered on, a repulsive force is generated between the electromagnet and the permanent magnet, that is, it pushes the rainwater grate upward to lift; when the electromagnet is powered off, the repulsive force between the electromagnet and the permanent magnet disappears, which facilitates the rainwater grate to automatically reset under the action of the reset spring and its own gravity.

[0042] Further, it further includes a telescopic protective cover sleeved outside the electromagnet and the permanent magnet, and the bottom end and the top end of the telescopic protective cover are respectively fixed to the top end of the protective box body and the bottom end of the rainwater grate.

[0043] The beneficial effect of adopting the above technical solution is: the telescopic protective cover can prevent other magnetic objects from generating magnetic field interference on the electromagnet and the permanent magnet, and ensure the normal operation of the electromagnet and the permanent magnet.

[0044] Further, the protective pedal assembly includes:

[0045] A slide rail, which is fixed on the ground outside the rain grate;

[0046] A pedal grille, one side of which is hingedly connected to the outer edge of the rain grate, and the other side of the pedal grille is connected with a moving member, and the moving member is slidably or rollably connected to the slide rail.

[0047] The beneficial effects of adopting the above technical solution are as follows: when the rain grate is lifted, one side of the pedal grille will be lifted together with the rain grate, and the other side of the pedal grille can move along the slide rail through the moving member, so that the pedal grille forms an inclined gentle slope at the rain inlet, avoiding pedestrians from being tripped by the lifted rain grate and ensuring the safety of pedestrians or vehicles passing through; and rainwater can also flow into the rain well from the pedal grille, realizing the rapid drainage of the rain inlet. Description of the Drawings

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0049] Figure 1 It is a schematic structural diagram of the first state when the rain grate is not lifted during the use of a safe and power-free self-lifting rain inlet device provided by the present invention.

[0050] Figure 2 It is a schematic structural diagram of the second state when the rain grate is lifted during the use of a safe and power-free self-lifting rain inlet device provided by the present invention.

[0051] Figure 3 For Figure 2 The enlarged schematic diagram of the structure of the local A in

[0052] Figure 4 It is a schematic diagram when the vertical pressure bar is inserted into the second guide cylinder.

[0053] Figure 5 It is a top view schematic diagram when the rain grate is not lifted.

[0054] Figure 6 It is a three-dimensional schematic diagram after the rain grate is lifted. Detailed Embodiments

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0056] As Figures 1-6 shown, an embodiment of the present invention discloses a safe and power-free self-lifting rainwater inlet device, which is installed at the wellhead of the rainwater well 1 and is located below the rainwater grate 2 at the wellhead of the rainwater well 1, and includes:

[0057] A water accumulation sensing component 3, which is arranged on the inner well wall of the rainwater well 1 and close to the wellhead;

[0058] A seesaw-type trigger arm 4, which is hinged on a fixing plate 5 on the outer well wall of the rainwater well 1. One end of the seesaw-type trigger arm 4 passes through a first through hole 101 on the well wall of the rainwater well 1 and is in a toggle connection with the trigger part of the water accumulation sensing component 3. When the water accumulation sensing component 3 senses water accumulation at the wellhead, the trigger part toggles one end of the seesaw-type trigger arm 4 to descend. A vertical pressure rod 6 is connected to a position on the seesaw-type trigger arm 4 close to the other end thereof, and the vertical pressure rod 6 is located below the rainwater grate 2;

[0059] A power control switch component 7, which is arranged on the fixing plate 5 and on one side of the seesaw-type trigger arm 4. The other end of the seesaw-type trigger arm 4 extends into the power control switch component 7 to trigger the on-off of the power control switch component 7 through the up-and-down movement of the other end of the seesaw-type trigger arm 4;

[0060] A power supply component 8, which is arranged in the rainwater well 1 and is electrically connected to the power control switch component 7;

[0061] A jacking component 9, which is arranged at the top end of the power control switch component 7 and is electrically connected to the power control switch component 7 for jacking up the rainwater grate 2;

[0062] A return spring 10, which is arranged outside the rainwater well 1. One end of the return spring 10 is fixed on a fixing seat 11 on the well wall of the rainwater well 1 above the first through hole 101, and the other end is fixedly connected to the bottom end surface of the rainwater grate 2;

[0063] A protective pedal component 12, there is at least one protective pedal component 12, and one side thereof is hinged to the outer periphery of the rainwater grate 2, and the other side of the protective pedal component 12 is in sliding or rolling contact with the ground.

[0064] Specifically refer to Figure 3 , the water accumulation sensing component 3 includes:

[0065] A water receiving tank 31, with one side and the top of the water receiving tank 31 being open and located below the rainwater grate 2. The outer box wall of the water receiving tank 31 is fixedly connected to the inner well wall of the rainwater well 1 near the wellhead. A drain hole (not shown) is provided on the bottom of the water receiving tank 31;

[0066] A seesaw arm 32, which is hinged to the inner bottom surface of the water receiving tank 31 through a support seat 33. One end of the seesaw arm 32 is connected to a floating ball 34 through a connecting rope ( Figure 3 shown in the figure but not marked). The floating ball 34 is a lightweight structure with a closed exterior or a hollow structure, and its size can be selected according to the length of the seesaw arm and its own weight;

[0067] A triggering vertical rod 35, which is a triggering part. One end of the triggering vertical rod 35 is hinged to the other end of the seesaw arm 32, and the other end of the triggering vertical rod 35 is in a toggle connection with one end of the seesaw - type triggering arm 4, and is used to toggle one end of the seesaw - type triggering arm 4 to descend.

[0068] The safety - and - power - free self - lifting rainwater inlet device further includes a support rod 36 and a guide sleeve 37. One end of the support rod 36 is fixedly connected to the inner well wall of the rainwater well 1, and the other end is fixedly connected to the guide sleeve 37. The triggering vertical rod 35 is inserted into the guide sleeve 37.

[0069] The power control switch assembly 7 includes:

[0070] A protective box body 71, which is arranged on the fixed plate 5 and is located on one side of the seesaw - type triggering arm 4. The lifting assembly 9 is arranged on the top of the protective box body 71;

[0071] A contact switch 72, which includes an upper spring piece 721 and a lower spring piece 722. First contacts 7211 and second contacts 7221 that are in contact with or separated from each other are respectively provided on the upper spring piece 721 and the lower spring piece 722. One ends of the upper spring piece 721 and the lower spring piece 722 are both fixed to the top of the inner wall of the protective box body 71. One end of the upper spring piece 721 is electrically connected to the lifting assembly 9, and one end of the lower spring piece 722 is electrically connected to the power supply assembly 8;

[0072] The other end of the seesaw - type triggering arm 4 passes through a second through - hole 711 on one side wall of the protective box body 71 and extends into the protective box body 71, and the other end of the seesaw - type triggering arm 4 is in a toggle connection with the other end of the lower spring piece 722, and is used to drive the other end of the lower spring piece 722 to move downward, so that the first contacts 7211 and the second contacts 7221 are separated. One end of the vertical pressure rod 6 is hinged to a position on the seesaw - type triggering arm 4 near its other end.

[0073] High - elastic rubber waterproof rings 13 are embedded on both the first through - hole 101 and the second through - hole 711.

[0074] The safe and power - free self - lifting rainwater inlet device further includes a first guiding cylinder 14. The upper end of the first guiding cylinder 14 is fixed to the bottom end of the rainwater grating 2, and the other end of the vertical pressure rod 6 is inserted and connected to the other end of the first guiding cylinder 14; alternatively, it further includes a second guiding cylinder 15 and a support rod 16. One end of the support rod 16 is fixed to the wall outside the rainwater well 1, and the other end is fixed to the second guiding cylinder 15. The vertical pressure rod 6 is inserted into the second guiding cylinder 15.

[0075] The power supply assembly 8 includes:

[0076] An impeller generator 81, which is arranged inside the rainwater well 1;

[0077] A battery 82, which is fixed in the fuse box buried outside the rainwater well 1. The battery 82 is electrically connected to one end of the lower spring piece 722.

[0078] The jacking assembly 9 includes:

[0079] An electromagnet 91, which is fixed to the top end of the protective box body 71 and is electrically connected to one end of the upper spring piece 721;

[0080] A permanent magnet 92, which is fixed to the bottom end face of the rainwater grating 2. When the electromagnet 91 is powered on, a repulsive force is generated between the electromagnet 91 and the permanent magnet 92 to jack up the rainwater grating 2 to a certain height.

[0081] The safe and power - free self - lifting rainwater inlet device further includes a telescopic protective cover 93 sleeved outside the electromagnet 91 and the permanent magnet 92. The bottom end and the top end of the telescopic protective cover 93 are respectively fixed to the top end of the protective box body 71 and the bottom end of the rainwater grating 2.

[0082] The protective pedal assembly 12 includes:

[0083] A slide rail 121, which is fixed on the ground outside the rainwater grating 2;

[0084] A pedal grille 122 (which can be made of a light rigid material or a flexible material with elasticity, but is prone to breakage and needs to be replaced in time). One side of the pedal grille 122 is hinged to the outer edge of the rainwater grating 2, and the other side of the pedal grille 122 is connected with a moving part 123. The moving part 123 is slidably or rollably connected to the slide rail 121. The moving part 123 can be a slider or a wheel. That is, when the moving part 123 is a slider, the slide rail 121 can be a linear guide rail; when the moving part 123 is a wheel, the slide rail 121 can be a channel - shaped track, and the wheel can roll in the channel - shaped track.

[0085] In the above embodiment, there is at least one water accumulation sensing component 3, seesaw trigger arm 4, power control switch component 7, lifting component 9, and reset spring 10. Therefore, the device can be set in different numbers at the corners / sides of the rainwater outlet according to different needs, and can realize the single-sided and overall opening and closing of the rainwater outlet. In a preferred embodiment of the present invention, there are preferably four water accumulation sensing components 3, seesaw trigger arm 4, power control switch component 7, lifting component 9, and reset spring 10, which are respectively installed at the four corners of the rainwater outlet to ensure that the force is uniform when the rainwater grate is lifted, and prevent the rainwater grate from tilting during the lifting process.

[0086] The height of the rain grate is determined by the rain grate's own gravity G, the return spring force, and the electromagnet repulsion. Take a single rain grate as an example with four sets of devices:

[0087] F 弹 =kΔx Formula 1

[0088]

[0089]

[0090] From formula 2 and 3, we can know

[0091]

[0092] F 弹 、F 斥 The relationship between the three should conform to Right now

[0093] The height of the rain grate can be adjusted, and the height h is:

[0094]

[0095] Where N is the number of coil turns; I is the current intensity, A; δ is the air gap length, m; B is the magnetic induction intensity, T; s is the magnetic circuit cross-sectional area, m 2 ; μ0 is the vacuum permeability, 4π×10 -7 Wb / Am; k is the elastic coefficient N / m; Δx is the spring deformation, m; G is the weight of the rain grate, N.

[0096] The working principle of the rainwater inlet device of the present invention is as follows:

[0097] When there is no rainfall, the device maintains the initial state, that is, the reset spring has no deformation and no tension, and the rainwater grate covers the wellhead of the rainwater well. At this time, the device is in the first state, see Figure 1 ;

[0098] When it rains, rainwater flows into the well through the rainwater grate, and part of the rainwater will flow into the water receiving box. When the flow rate of the rainwater outlet is small, the water that falls in can be discharged into the rainwater well through the drainage hole at the bottom of the water receiving box. When the flow rate of the rainwater outlet is too large and reaches the drainage capacity limit of the rainwater grate, that is, water accumulates in the rainwater outlet, the water that falls into the water receiving box has no time to be discharged, and water accumulates in the water receiving box. When the accumulated water reaches a certain height, the float floats up, driving one end of the seesaw arm to rise, while the other end of the seesaw arm falls. At this time, the trigger vertical rod is pushed downward to push one end of the seesaw trigger arm to fall, while the other end of the seesaw trigger arm rises. The other end of the seesaw trigger arm no longer presses the other end of the lower spring sheet, and the other end of the lower spring sheet moves upward under the action of its own elastic force, and the The second contact on the lower spring sheet contacts the first contact on the upper spring sheet. At this time, the power supply component supplies power to the electromagnet, and a repulsive force is generated between the electromagnet and the ordinary magnet. When the repulsive force is greater than the gravity of the rain grate and the rain grate is lifted, the return spring is stretched and deformed to prevent the rain grate from shifting, and at the same time, a downward force is applied to the rain grate until the repulsive force generated is equal to the gravity of the rain grate plus the elastic force of the return spring. The rain grate remains stationary. At the same time, one side of the pedal grille will be lifted together with the rain grate, and the other side of the pedal grille can be moved along the slide rail through the moving part, so that the pedal grille forms an inclined protective gentle slope at the rain grate. At this time, the drainage efficiency of the rain grate is improved, and the entire device is in a stable second state. See. Figure 2 .

[0099] When a pedestrian or a vehicle passes by, they step on / press the pedal grille or the top of the rain grate at the first time. At this time, the rain grate feels the touch and is slightly pressed down at the first time. At this time, the rain grate presses the vertical pressure rod downward, and the vertical pressure rod presses down the other end of the seesaw trigger arm, and then presses down the other end of the lower spring sheet, so that the first contact and the second contact are separated, the electromagnet loses power, and the repulsive force between the electromagnet and the ordinary magnet disappears. The rain grate is pulled back to its original position by the return spring, that is, the rain grate is re-covered at the wellhead of the rainwater well, ensuring the stability of the rain grate when pedestrians or vehicles pass by. When the pedestrian or vehicle moves away from the rain grate, under the action of the float, the first contact and the second contact are re-contacted, and repulsive force is generated between the electromagnet and the ordinary magnet again, lifting the rain grate again.

[0100] When the overflow of rainwater decreases, the accumulated water in the water receiving tank decreases, the float falls back, driving one end of the seesaw arm to fall, while the other end of the seesaw arm rises, and the trigger vertical rod on this end rises accordingly and does not contact one end of the seesaw trigger arm. At the same time, the other end of the seesaw trigger arm falls under the gravity of the vertical pressure rod, and then presses down the other end of the spring sheet, the first contact and the second contact separate, the electromagnet loses power, and the rain grate is pulled back to its original position by the tension of the reset spring and the rain grate's own gravity, and the pedal grille falls and resets accordingly, that is, it returns to the first state.

[0101] Therefore, the rainwater inlet device can identify water accumulation and automatically lift the rainwater grate, improving the drainage efficiency of the rainwater inlet. At the same time, a protective pedal assembly is added, which can trigger the device when pedestrians or vehicles pass by, causing the rainwater grate to automatically fall back, with high safety. At the same time, it can achieve automatic reset when the water accumulation subsides, without manual intervention, reducing the labor participation cost.

[0102] In the above embodiment, a tension spring is used as the reset spring, and a scheme where the electromagnet generates a repulsive force with a common magnet is adopted; in other embodiments, the reset spring can be a compression spring, and a scheme where the electromagnet generates an attractive force with a common magnet is adopted.

[0103] In this specification, the various embodiments are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method part.

[0104] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A safe and power-free self-lifting rainwater inlet device, which is installed at the wellhead of a rainwater well (1) and is located below a rainwater grate (2) at the wellhead of the rainwater well (1), and is characterized in that, Comprising: A water accumulation sensing component (3), which is arranged on the inner well wall of the rainwater well (1) and close to the wellhead; A seesaw trigger arm (4), which is hinged on a fixed plate (5) on the outer well wall of the rainwater well (1). One end of the seesaw trigger arm (4) passes through a first through hole (101) on the well wall of the rainwater well (1) and is in a toggle connection with the trigger part of the water accumulation sensing component (3). When the water accumulation sensing component (3) senses water accumulation at the wellhead, the trigger part toggles one end of the seesaw trigger arm (4) to descend. A vertical pressure rod (6) is connected to a position near the other end of the seesaw trigger arm (4), and the vertical pressure rod (6) is located below the rainwater grate (2); A power control switch component (7), which is arranged on the fixed plate (5) and on one side of the seesaw trigger arm (4). The other end of the seesaw trigger arm (4) extends into the power control switch component (7) to trigger the on / off of the power control switch component (7) by the up-and-down movement of the other end of the seesaw trigger arm (4); A power supply component (8), which is arranged in the rainwater well (1) and is electrically connected to the power control switch component (7); A jacking component (9), which is arranged at the top end of the power control switch component (7) and is electrically connected to the power control switch component (7) for jacking up the rainwater grate (2); A return spring (10), which is arranged outside the rainwater well (1). One end of the return spring (10) is fixed on a fixed seat (11) on the well wall of the rainwater well (1) above the first through hole (101), and the other end is fixedly connected to the bottom end surface of the rainwater grate (2); A protective pedal component (12), where there is at least one protective pedal component (12), and one side is hinged to the outer peripheral side of the rainwater grate (2), and the other side of the protective pedal component (12) is in sliding or rolling contact with the ground.

2. The safety and power-free self-lifting rainwater inlet device according to claim 1, wherein The water accumulation sensing component (3) includes: A water receiving tank (31), which has openings on one side and the top and is located below the rainwater grate (2). The outer wall of the water receiving tank (31) is fixedly connected to the inner well wall of the rainwater well (1) close to the wellhead, and a drain hole is opened on the bottom of the water receiving tank (31); A seesaw arm (32), which is hinged on the inner bottom surface of the water receiving tank (31) through a support seat (33), and a floating ball (34) is connected to one end of the seesaw arm (32); A trigger vertical rod (35), which is the trigger part. One end of the trigger vertical rod (35) is hinged to the other end of the seesaw arm (32), and the other end of the trigger vertical rod (35) is in a toggle connection with one end of the seesaw trigger arm (4) for toggling one end of the seesaw trigger arm (4) to descend.

3. The safety and power-free self-lifting rainwater inlet device according to claim 2, characterized in that It also comprises a support rod (36) and a guide sleeve (37), one end of the support rod (36) being fixedly connected to the inner wall of the rainwater well (1), and the other end being fixedly connected to the guide sleeve (37), and the triggering vertical rod (35) being inserted into the guide sleeve (37).

4. A safe and power - free self - lifting rainwater inlet device according to any one of claims 1 - 3, characterized in that, The power control switch assembly (7) comprises: A protective box (71), the protective box (71) being arranged on the fixing plate (5) and located on one side of the seesaw type trigger arm (4), and the lifting assembly (9) being arranged on the top of the protective box (71); A contact switch (72), the contact switch (72) comprising an upper spring sheet (721) and a lower spring sheet (722), the upper spring sheet (721) and the lower spring sheet (722) respectively being provided with two first contacts (7211) and a second contact (7221) that are in contact with or separated from each other, one end of the upper spring sheet (721) and one end of the lower spring sheet (722) being fixed to the top of the inner wall of the protective box (71), one end of the upper spring sheet (721) being electrically connected to the lifting assembly (9), and one end of the lower spring sheet (722) being electrically connected to the power supply assembly (8); The other end of the seesaw type trigger arm (4) passes through the second through hole (711) on the side wall of the protective box (71) and extends into the interior of the protective box (71), and the other end of the seesaw type trigger arm (4) is connected to the other end of the lower spring sheet (722) by a lever, so as to drive the other end of the lower spring sheet (722) to move downward, thereby separating the first contact point (7211) and the second contact point (7221), and one end of the vertical pressure rod (6) is hingedly connected to a position on the seesaw type trigger arm (4) close to the other end thereof.

5. The safety non-powered self-lifting rainwater inlet device according to claim 4, characterized in that, The first through hole (101) and the second through hole (711) are both embedded with elastic rubber waterproof rings (13).

6. The safety and power-free self-lifting rainwater inlet device according to claim 4, characterized in that, It also includes a first guide cylinder (14), the upper end of which is fixed to the bottom end of the rain grate (2), and the other end of the vertical pressure rod (6) is plug-connected to the other end of the first guide cylinder (14); or, it also includes a second guide cylinder (15) and a support rod (16), one end of which is fixed to the wall outside the rain well (1), and the other end is fixed to the second guide cylinder (15), and the vertical pressure rod (6) is inserted into the second guide cylinder (15).

7. A safe and power-free self-lifting rainwater inlet device according to claim 4, characterized in that, The power supply component (8) comprises: An impeller generator (81), wherein the impeller generator (81) is arranged inside the rainwater well (1); A battery (82), wherein the battery (82) is fixed in a fuse box buried outside the rainwater well (1), and the battery (82) is electrically connected to one end of the lower spring sheet (722).

8. A safe and power-free self-lifting rainwater inlet device according to claim 4, characterized in that, The lifting assembly (9) comprises: An electromagnet (91), the electromagnet (91) being fixed to the top of the protection box (71) and electrically connected to one end of the upper spring sheet (721); An ordinary magnet (92), the ordinary magnet (92) being fixed on the bottom end surface of the rainwater grate (2). When the electromagnet (91) is powered on, a repulsive force is generated between the electromagnet (91) and the ordinary magnet (92) to lift the rainwater grate (2) to a certain height.

9. A safe and non-powered self-lifting rainwater inlet device according to claim 8, characterized in that, It further includes a telescopic protective cover (93) sleeved outside the electromagnet (91) and the ordinary magnet (92). The bottom end and the top end of the telescopic protective cover (93) are respectively fixedly connected to the top end of the protective box body (71) and the bottom end of the rainwater grate (2).

10. A safe and power-free self-lifting rainwater inlet device according to any one of claims 1-3, 5-9, characterized in that, The protective pedal assembly (12) includes: A slide rail (121), the slide rail (121) being fixed on the ground outside the rainwater grate (2). A pedal grille (122), one side of the pedal grille (122) being hingedly connected to the outer edge of the rainwater grate (2), the other side of the pedal grille (122) being connected with a moving member (123), the moving member (123) being slidably or rollably connected to the slide rail (121).

Images