CN113944220A

CN113944220A - Be used for rainwater row mouth to cut dirty clean grid system of water conservancy of preventing flowing backward

Info

Publication number: CN113944220A
Application number: CN202010682798.8A
Authority: CN
Inventors: 刘敏; 王荣合
Original assignee: Jiangsu Yangtze River Delta Smart Water Platform Research Institute Co ltd
Current assignee: Jiangsu Yangtze River Delta Smart Water Platform Research Institute Co ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2022-01-18
Anticipated expiration: 2040-07-15
Also published as: CN113944220B

Abstract

The invention discloses a sewage-intercepting and backflow-preventing hydraulic cleaning grid for a rainwater drainage port, which comprises a baffle and a grid, wherein the baffle and the grid are arranged on the outer side of a drainage port on a reservoir; when the water outlet is opened, water in the reservoir flows out of the water outlet and then downwards passes through the grating; the grating is used for trapping the garbage or dirt carried in the water, and when the water outlet is closed, the garbage or dirt accumulated on the grating is pushed back into the reservoir by the baffle plate so as to be uniformly treated in the reservoir.

Description

Be used for rainwater row mouth to cut dirty clean grid system of water conservancy of preventing flowing backward

Technical Field

The invention relates to flow control equipment in municipal drainage pipe networks or drainage riverways, in particular to a rainwater drainage port sewage interception backflow prevention hydraulic cleaning grid system.

Background

The water storage tank is used for storing rainwater or domestic sewage or water of other water systems, the water storage building is generally made larger when the rainwater or the domestic sewage or the water of other water systems is released properly, water is stored in rainy seasons, water is discharged in dry seasons, and the flood regulation effect is achieved.

For the rainwater reservoir, a water outlet of the rainwater reservoir needs to be controlled to be opened or closed in real time, so that redundant water can be discharged in time when the water level of the reservoir is high, and a backflow prevention function is also required, so that the damage of waterlogging is avoided being aggravated when the water amount is too large;

the existing rainwater reservoir regulation and control valve is mostly controlled manually, and some rainwater reservoirs are automatically controlled based on sensors, but the service life requirement of the reservoir is very long, the precision and the reliability of equipment such as various sensors can be gradually reduced along with the prolonging of the service time, the later maintenance can be relatively frequent, and the cost is very high.

The rainwater is gradually collected into the water storage tank from the ground, and garbage or dirt such as branches, plastics, paper boxes and the like can be carried in the collecting process, so that the garbage or the dirt needs to be treated in the water storage tank and cannot enter the drainage channel.

For the reasons, the inventor conducts deep research on the related structure of the drainage port of the existing rainwater reservoir and designs a rainwater drainage port dirt interception backflow prevention hydraulic cleaning grid system.

Disclosure of Invention

In order to overcome the problems, the inventor of the invention has conducted intensive research to design a hydraulic cleaning grid system for intercepting sewage and preventing backflow at a rainwater drainage port, which comprises a baffle plate and a grid, wherein the baffle plate is arranged outside a drainage port on a reservoir, and the grid is positioned below the baffle plate; when the water outlet is opened, water in the reservoir flows out of the water outlet and then downwards passes through the grating; the invention is completed by intercepting the garbage or dirt carried in the water by the grille, pushing the garbage or dirt accumulated on the grille back to the reservoir by the baffle when the water outlet is closed so as to be uniformly treated in the reservoir.

Specifically, the invention aims to provide a rainwater drain intercepting and backflow preventing hydraulic cleaning grid system, which comprises a grid 6 and a baffle plate 1, wherein the grid 6 is arranged outside a drain 81 on a water storage tank 8;

wherein, the grating 6 is positioned below the baffle plate 1,

when the water outlet 81 is opened, water in the reservoir flows out of the water outlet 81 and then downwards passes through the grille 6;

the trash or dirt carried in the water is trapped by the grating 6;

the closing and opening of the drain port 81 is controlled by the shutter 1 reciprocating above the grill 6.

Wherein the grating 6 comprises a plurality of intercepting bars 61 arranged parallel to each other,

preferably, the length direction of the intercepting bar 61 coincides with the moving direction of the barrier 1.

Wherein lateral baffles 61 are arranged on both sides of the grating 6,

the side baffle 61 is provided with a slideway 5;

the baffle 1 slides back and forth along the slide 5, close to or far from the outer wall surface of the reservoir 8,

preferably, when the baffle 1 is tightly attached to the outer wall surface of the reservoir, the water outlet 81 is closed;

when a certain gap is formed between the baffle plate 1 and the outer wall surface of the reservoir, the water outlet 81 is opened;

when the baffle 1 slides towards the reservoir, the baffle 1 pushes the garbage or dirt trapped on the grating 6 back into the reservoir 8.

Wherein, the bottom of the baffle plate 1 is provided with a poke rod 11,

the tap lever 11 is inserted into the gap between the two adjacent intercepting bars 61,

the poke rod 11 reciprocates along with the baffle 1, thereby removing the garbage or dirt clamped between the adjacent intercepting rods 61.

The system also comprises a balancing weight 2, and the balancing weight is connected with the baffle 1 through a rope 3;

the gravity of the counterweight block 1 is transmitted to the baffle 1 through the rope 3, so that the water outlet 81 is in a closed state.

Wherein the balancing weight 2 is arranged outside the reservoir 8,

the system also comprises at least two pulleys 4,

the rope 3 changes direction by passing around at least two pulleys 4, so that the baffle 1 is controlled to be attached to the outer wall surface of the reservoir 8 by the gravity of the balancing weight, and the water outlet 81 is closed.

When the water level in the reservoir 8 reaches a predetermined height which is higher than or equal to the height of the water outlet 81, the force of the water pressure in the reservoir 8 acting on the baffle plate 1 is larger than the force of the counterweight block 2 acting on the baffle plate 1 through the rope 3, so that the baffle plate 1 is pushed open, and the water outlet 81 is switched from a closed state to an open state.

Wherein, the water outlet 81 on the reservoir 8 is communicated with the drainage channel 9, namely, the water in the reservoir 8 passes through the water outlet 81 and the grille 6 and then enters the drainage channel 9;

the baffle 1 and the balancing weight 2 are both positioned in the drainage channel 9;

the apparent density of the balancing weight 2 is less than that of water;

preferably, the weight block comprises a heavy core 21 having a density greater than that of water and a lightweight flotation layer 22 coated outside the heavy core 21.

Wherein, a transverse connecting rod 7 is arranged on one side of the baffle plate 1 which is far away from the reservoir,

the rope 3 is connected with the baffle 1 through the transverse connecting rod 7.

Wherein an emergency water outlet 82 is also arranged on the reservoir 8,

an emergency baffle 10 is arranged outside the emergency water outlet 82,

the emergency baffle 10 is opened when the water level in the reservoir 8 reaches the highest level;

preferably, a diving wall 83 is provided in the reservoir 8 in the vicinity of the emergency drain 82.

The invention has the advantages that:

(1) according to the rainwater drainage port dirt interception backflow prevention hydraulic cleaning grid system, the liquid level height in the reservoir can be automatically controlled under the condition that extra power is not needed, when the liquid level height is higher than a preset value, the water drainage port is automatically opened to drain water, when the liquid level height is lower than the preset value, the water drainage port is automatically closed, and backflow can be prevented;

(2) according to the rainwater drainage port sewage interception backflow prevention hydraulic cleaning grid system, the gravity of the counterweight in the vertical direction is converted into the pulling force of the baffle through the matching of the pulleys and the ropes, and the automatic control is realized by skillfully utilizing the interaction and balance between the water pressure and the gravity;

(3) the length of the cord in the rainwater drainage port sewage interception and backflow prevention hydraulic cleaning grid system is adjustable, so that the effective working position of the balancing weight can be changed;

(4) the rainwater drainage port dirt interception and backflow prevention hydraulic cleaning grid system provided by the invention is also provided with the grid, so that garbage or dirt in the reservoir can be prevented from entering the drainage channel, and the garbage or dirt can be conveniently and uniformly treated in the reservoir.

(5) The rainwater drainage port sewage interception and backflow prevention hydraulic cleaning grid system is also provided with an emergency drainage port and an emergency baffle, and the emergency drainage port and the emergency baffle can be opened when the water quantity in the water storage tank is too high so as to conveniently drain water in the water storage tank into the drainage channel in time.

Drawings

FIG. 1 shows an isometric view at a grille in a system for a storm drain intercepting, back-flow prevention, hydraulic cleaning grille, according to a preferred embodiment of the present invention;

FIG. 2 shows a top view at a grille in a system for a rainwater drain intercepting backflow prevention hydraulic cleaning grille according to a preferred embodiment of the present invention;

FIG. 3 is a top view of the overall structure of a hydraulic cleaning grille system for intercepting rainwater and preventing backflow according to a preferred embodiment of the present invention;

FIG. 4 is a schematic structural diagram illustrating a baffle plate, a grating and a lateral baffle plate in a rainwater drain intercepting and backflow preventing hydraulic cleaning grating system according to a preferred embodiment of the invention;

FIG. 5 shows a partial enlarged view of FIG. 4;

FIG. 6 is a schematic view showing the overall structure of a drain opening closed in a rainwater drain intercepting backflow preventing hydraulic cleaning grille system according to a preferred embodiment of the present invention;

FIG. 7 is a schematic view illustrating the overall structure of a drain opening in a rainwater drain intercepting and backflow preventing hydraulic cleaning grille system according to a preferred embodiment of the present invention when the drain opening is opened;

FIG. 8 is a schematic structural view illustrating a water floating weight block in a drain channel of a rainwater drain intercepting and backflow preventing hydraulic cleaning grid system when a drain opening is opened according to a preferred embodiment of the present invention;

FIG. 9 is a schematic structural view showing a water floating weight block in a drainage channel of a rainwater drain intercepting and backflow preventing hydraulic cleaning grid system when a drainage outlet is closed according to a preferred embodiment of the present invention;

fig. 10 shows a schematic structural view on a transverse link rod in a rainwater drain intercepting and backflow preventing hydraulic cleaning grille system according to a preferred embodiment of the invention.

The reference numbers illustrate:

1-baffle plate

11-poke rod

12-stationary shaft

13-Water-proof bearing

2-counterweight block

21-heavy core

22-light-weight flotation layer

3-rope

4-pulley

5-slideway

6-grid

61-intercepting rod

62-side baffle

63-tailgate

7-transverse connecting rod

71-longitudinal bar

72-rotating disk

73-baffle plate

74-electric machine

8-reservoir

81-Water discharge opening

82-Emergency water outlet

83-diving wall

9-drainage channel

10-emergency baffle

Detailed Description

The invention is explained in more detail below with reference to the figures and examples. The features and advantages of the present invention will become more apparent from the description.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

According to the present invention, there is provided a hydraulic cleaning grille system for rainwater drain interception and back-flow prevention, as shown in fig. 1, 2 and 3, the system includes a baffle plate 1 installed outside a drain 81 on a water reservoir 8; a grid 6 is arranged outside the water outlet 81 and below the baffle plate 1;

fig. 1 shows a schematic structural diagram of the outer grid of the reservoir, wherein structures such as transverse connecting rods, balancing weights, ropes and pulleys for driving the baffle plate 1 to reciprocate are omitted, and the slide way 5 is also omitted.

When the water outlet 81 is in a closed state, the baffle plate 1 and the outer wall surface of the reservoir 8 are tightly attached to each other, the water outlet 81 is blocked by the baffle plate 1, and water in the reservoir 8 is difficult to flow out of the water outlet 81; if a gap exists between the baffle plate 1 and the outer wall surface of the reservoir, a small amount of water in the reservoir can flow out of the gap.

When the water outlet 81 is in an open state, when a certain gap is left between the baffle plate 1 and the outer wall surface of the reservoir 8, the water outlet 81 is unblocked, and water in the reservoir can flow out of the water outlet 81 and downwards pass through the grille 6;

during the process of passing through the grating 6, various garbage and dirt carried in water can be blocked by the grating 6 and stay above the grating 6, and when the baffle 1 moves towards the reservoir, the baffle 1 can push the garbage and dirt accumulated on the grating 6 back to the reservoir;

the drain port 81 can be switched between a closed state and an open state, that is, the flapper 1 can be switched back and forth between two states of being in close contact with the outer wall surface of the reservoir 8 and having a certain gap with the outer wall surface of the reservoir 8, and such a back and forth switching operation is realized by controlling the flapper 1 to move back and forth above the grill 6.

Preferably, the baffle 1 is switched between the two states without adding extra power or being controlled by a motor push rod or other devices, when the water level in the reservoir is high enough, the baffle automatically moves backwards to open the water outlet, and when the water level in the reservoir falls back, the baffle automatically moves forwards to close the water outlet.

In the direction in this application, the place ahead means the direction at orientation cistern place, and the place behind means the direction at orientation drainage canal place.

In a preferred embodiment, as shown in figures 1, 2 and 3, said grid 6 comprises a plurality of interception bars 61 arranged parallel to each other,

preferably, the length direction of the intercepting bar is consistent with the moving direction of the baffle 1;

the intercepting rods 61 are elongated metal rods, preferably rods with circular cross sections, the size of each intercepting rod 61 is basically the same, and the distance between every two adjacent intercepting rods 61 is basically the same;

in a preferred embodiment, the grating 6 is horizontally arranged, the baffle plate 1 is vertically arranged, the baffle plate 1 slides back and forth above the grating 6, and the distance between the bottom of the baffle plate 1 and the top of the grating is less than 5 cm;

preferably, a poke rod 11 is further arranged at the bottom of the baffle plate 1, as shown in fig. 4, and is fixed at the bottom of the baffle plate 1, and the poke rod is inserted into a gap between the interception rods 61 in the grating, namely, a gap between two adjacent interception rods 61, so that when the baffle plate 1 moves towards the reservoir, garbage or dirt accumulated on the grating 6 is pushed into the reservoir.

The garbage or dirt comprises solid waste such as branches, leaves, paper shells, broken cloth, packaging bags, plastic bottles and the like which can be wrapped by water flow and carried away.

In a preferred embodiment, lateral baffles 62 are provided on both sides of the grate 6, and water from the reservoir can only pass through the grate 6 and into the reservoir 9 by the enclosure of the lateral baffles 62 and the baffles 1.

Preferably, the side baffle 62 is fixedly installed on the outer wall surface of the reservoir, the side baffle 62 is preferably a metal plate, the number of the side baffles is two, the baffle 1 is located between the two side baffles 62, the baffle 1 slides back and forth between the two side baffles, and the distance between the bottom of the side baffle and the grating 6 is less than 5cm, so that garbage or dirt accumulated on the grating 6 is prevented from entering the drainage channel from the side; the distance between the side baffle 62 and the baffle 1 is also below 5cm, and the side baffle is preferably basically attached to the baffle 1.

In a preferred embodiment, a slide 5 is installed around the water outlet 81 on the outer wall surface of the water reservoir 8, and the baffle 1 is reciprocally slid along the slide 5 to approach or separate from the outer wall surface of the water reservoir 8. Preferably, the slide way is arranged along the sliding direction of the baffle plate 1, namely, the slide way is vertically arranged on the outer wall surface of the water storage tank 8; more preferably, the chute 5 is arranged on the lateral baffle 62, and is arranged with the lateral baffle 62 as an integral structure;

in another embodiment, a horizontal notch is formed in the inner side of the lateral baffle plate, i.e., the side facing the baffle plate 1, the notch is used as a slide way, protrusions protruding outwards are arranged on two sides of the baffle plate 1, the protrusions are embedded into the notch, and the baffle plate 1 is limited by the cooperation of the protrusions and the notch, so that the baffle plate 1 can only slide back and forth along the direction of the notch.

Preferably, the slide ways are at least two and parallel to each other, so that the baffle 1 can only slide back and forth along the front-back direction, cannot slide towards other directions, and cannot rotate.

Preferably, as shown in fig. 4 and 5, fig. 4 shows a schematic front structural view of the baffle 1, a fixing shaft 12 extending outwards is arranged on both sides of the baffle 1, a waterproof bearing 13 is sleeved on the fixing shaft 12, the waterproof bearing 13 is embedded in the slideway 5 and can slide in the slideway 5, and by arranging a sliding bearing, the sliding between the baffle 1 and the slideway is changed into rolling friction, so that the friction force during the sliding process is reduced, and the sliding is more stable.

The fixed axle and waterproof bearing are provided with 4 groups at least, correspond, the slide is provided with 4 at least to ensure that baffle 1 can reciprocate smoothly and slide.

In a preferred embodiment, as shown in FIG. 5, FIG. 5 shows an enlarged partial view of the slide and stationary bearings;

the fixed shaft 12 is provided with a step, the waterproof bearing on the fixed shaft is clamped outside the step, and the waterproof bearing can be abutted against the inner surface of the slide way, so that the stability of the waterproof bearing is ensured, and the waterproof bearing is not easy to move.

As the slide way, namely the baffle plate, works in the water environment, the bearing needs to be a waterproof bearing, so that the service life of the bearing in the water environment is prolonged.

In a preferred embodiment, as shown in fig. 1, 2, 3, 4, 5 and 6, one end of the side baffle 62 is connected with the wall surface of the reservoir, the other end of the side baffle 62 is fixedly provided with a rear baffle 63, both side baffles 62 are connected with the rear baffle 63, the rear baffle 63 is opposite to the water outlet, the baffle 1 reciprocates between the water outlet 81 and the rear baffle 63, and when the baffle 1 moves backwards to a position abutting against the rear baffle 63, the baffle 1 is blocked by the rear baffle 63 and cannot move backwards any more.

Preferably, the intercepting bar 61 of the grill is fixed at one end to the wall of the reservoir and at the other end to the back plate 63.

Preferably, the main body of the baffle 1 is a metal flat plate, and a reinforcing rib is arranged on one side of the metal flat plate to increase the strength of the metal flat plate and avoid deformation caused by stress;

more preferably, a sealing gasket is disposed on a side of the metal flat plate facing forward, the cross-sectional dimension of the metal flat plate is larger than that of the water outlet, the sealing gasket is located in a region outside the water outlet, and when the baffle plate 1 is attached to the outer wall surface of the water reservoir 8, the sealing gasket abuts against the outer wall surface of the water reservoir 8, so that the sealing effect between the baffle plate 1 and the outer wall surface is increased. The sealing gasket is preferably a rubber sealing gasket, and the metal plate is preferably a stainless steel plate.

And a sealing groove is formed in the front surface of the stainless steel plate, and the sealing gasket is embedded into the sealing groove, so that the sealing gasket is fixedly connected with the stainless steel plate.

Preferably, the dimension of the baffle plate 1 in the longitudinal direction is greater than the dimension of the drain opening in the longitudinal direction by 100mm or more, and the dimension of the baffle plate 1 in the width direction is greater than the dimension of the drain opening in the width direction by 100mm or more, so that the sealing groove is opened at a sufficient spatial position.

In a preferred embodiment, as shown in fig. 6 and 7, the system further comprises a balancing weight 2, and the balancing weight is connected with the baffle 1 through a rope 3;

Theoretically, the pulling force provided by the rope to the counterweight block 1 is equal to the gravity of the counterweight block 1, the directions are opposite, and the pulling forces at all positions on the rope are equal, so that the pulling force exerted by the rope on the baffle plate 1 is equal to the gravity of the counterweight block 1, and in practical engineering application, more friction force exists, so that the pulling force exerted by the rope on the baffle plate 1 is slightly smaller than the gravity of the counterweight block 1, and under the condition that each contact position is smooth and flat as much as possible, the friction force ratio is smaller, and can be ignored in theoretical calculation, so that the pulling force exerted by the rope on the baffle plate 1 can be considered to be substantially equal to the gravity of the counterweight block 1.

The rope described in this application may be a wire rope or a metal wire, and the steel wire rope is preferably selected in this application to ensure that it has a sufficient tensile strength and is not easy to break.

Preferably, both ends of the rope 3 are provided with pull rings, the pull rings are metal circular rings, and the rope 3 is fixedly connected with the metal pull rings and can be fixedly connected in a welding manner; also all be provided with similar pull ring on balancing weight 2 and baffle 1, the pull ring on the rope is connected with the pull ring on balancing weight 2 and the baffle 1 to realize being connected between 3 and balancing weight 2 and the baffle 1, such connected mode can greatly improve the life of rope, can not damage because of the deformation of contact point.

In a preferred embodiment, as shown in fig. 6 and 7, the weight 2 is arranged outside the reservoir 8,

the system also comprises at least two pulleys 4,

Preferably, said pulleys 4 are provided with at least 4, two visible in fig. 6 and 7, and the other two are hidden by the visible pulleys; the rope also is provided with two at least, and every rope is walked around two pulleys, is connected with balancing weight and baffle 1 respectively, all has the tie point of two ropes on baffle 1 and the balancing weight promptly to can make the atress even, ensure that the removal process is steady powerful.

The pulley is preferably a fixed pulley, namely the pulley rotates at a fixed position and cannot move, and the pulley is fixedly arranged on the frame or the wall through a support and can bear larger acting force and at least can bear more than twice of the gravity of the counterweight block;

the weight is preferably an elongated structure as shown in fig. 1, with only the cross-section of the weight being shown in fig. 6 and 7.

The arrangement position of the pulley 4 can be in various forms and can be arranged at different positions, and the purpose is to change the acting force direction of the thread rope through the pulley, so that the baffle 1 is pulled to the direction clinging to the outer wall surface of the reservoir 8 through the pulling force of the thread rope;

the arrangement positions of the pulleys are related to the working mode/principle of the baffle plate 1, and as shown in fig. 6 and 7, when the baffle plate 1 works in a mode of reciprocating sliding along the horizontal direction, the pulleys are arranged behind the baffle plate 1;

in a preferred embodiment, as shown in fig. 6 and 7, when the water level in the reservoir 8 reaches a predetermined height higher than or equal to the height of the water outlet 81, the force of the water pressure in the reservoir 8 acting on the baffle 1 is greater than the force of the counterweight 2 acting on the baffle 1 through the rope 3, thereby pushing open the baffle 1, so that the water outlet 81 is switched from the closed state to the open state.

Preferably, the predetermined height is 20-30 cm higher than the bottom of the water outlet, and when the water level in the water storage tank 8 reaches the predetermined height, the water pressure in the water storage tank is equal to the gravity of the balancing weight, so that the baffle 1 can be just pushed to move. That is, when the water level in the reservoir is gradually lowered and is lower than a predetermined height, the baffle plate 1 gradually moves towards the reservoir, the grating is completely positioned below the liquid level, the height between the grating and the liquid level is 20-30 cm, and garbage and other objects accumulated on the grating can be conveniently pushed to the reservoir 8 by the baffle plate 1 along with the liquid flow.

The height referred to in this application is understood to be the height relative to the horizontal plane, unless otherwise indicated.

The position of the drain 81 in the reservoir 8 is selected according to the design water level of the reservoir, i.e. the water level in the reservoir, which is normally the highest level substantially maintained at the predetermined height, and when the water level in the drain channel rises and there is a risk of back-flow from the drain, the water level in the reservoir will be higher than the predetermined height, and further, when the water level in the reservoir increases sharply, if the discharge is slow due to the action of the grille, the water level in the reservoir will gradually increase, and when the water level reaches the vicinity of the maximum allowable water level, the emergency drain 82 will open to quickly drain the water in the reservoir into the drain channel.

Preferably, the water outlet may be a through hole formed in a wall surface of the reservoir, or may be a notch formed in the wall surface of the reservoir.

The emergency water outlet 82 is a notch formed in the wall surface of the reservoir.

In a preferred embodiment, the drainage port 81 and the emergency drainage port 82 of the reservoir 8 are both communicated with the drainage channel 9, i.e. water in the reservoir 8 passes through the drainage port 81 or the emergency drainage port 82 and then enters the drainage channel 9 through the grille 6;

the ditch adjoins with the cistern, and the ditch is for being used for the channel of drainage, and the comparison that also can set up is darker, and its wall can be higher, and concrete need sets up according to topography and design retaining displacement, preferably in this application, ditch and the same wall of cistern sharing, a headwall both sides are cistern and ditch respectively promptly, outlet 81 and urgent outlet 82 are all seted up on this headwall.

The baffle 1 and the balancing weight 2 are both positioned in the drainage channel 9; namely outside the water reservoir;

the apparent density of the balancing weight 2 is less than that of water; when the balancing weight 2 is submerged by the water in the drainage canal 9, the balancing weight 2 can float on the water surface, and buoyancy can be offset with the gravity of the balancing weight 2, thereby the baffle 1 transmission pulling force can not be given through the rope 3 again, the water level in the cistern at this moment can push the baffle 1 if being higher than the height position of the bottom of the drainage outlet, and when the water level is high in the drainage canal, the water in the cistern can push the baffle 1, so that the drainage outlet is opened. When the water in the drainage channel reaches the preset height, the water in the reservoir can be accumulated as little as possible, and the water can be automatically discharged before the water in the reservoir does not reach the preset height; as shown in fig. 8, fig. 8 shows that the liquid level in the reservoir does not reach a predetermined height, but the counterweight block 2 is submerged due to the high liquid level in the drainage channel, the baffle 1 is pushed by the water pressure in the reservoir, and the drainage port is opened.

Further preferably, the heavy core 21 is a rod-shaped structure made of metal, most of the gravity of the counterweight is provided by the heavy core 21, and the light-weight floating layer 22 can be made of light materials such as foam and air bags, can cover the heavy core 21, and is fixed on the outer side of the heavy core;

preferably, the heavy core 21 is located at a position below the center of the counterweight, as shown in fig. 6, 7, 8 and 9, in the counterweight block, the center of mass of the heavy core 21 is located right below the center of mass of the whole counterweight, and the light floating layers on both sides of the heavy core 21 are symmetrically arranged;

such setting can make the balancing weight is whole to be similar to the tumbler, when the water in by the drainage canal floats, wholly can not empty the skew to prevent 3 twines on the balancing weight of rope, and can also make the in-process that the liquid level ascended and descends in the drainage canal, the reciprocating of balancing weight is more steady, makes the steady work of overall system, prevents to lead to the drainage mouth to open by mistake because the power fluctuation that receives on the rope.

In a preferred embodiment, in the case that the liquid level rises in the drainage channel 9 and the counterweight 2 floats, the gravity and buoyancy of the counterweight 2 are offset, no force is applied to the rope 3, and when the liquid level in the reservoir 8 is higher than the liquid level in the drainage channel 9 and is higher than a predetermined level, as shown in fig. 9, the drainage port 81 is in an open state, and the water in the reservoir 8 flows into the drainage channel 9; when the liquid level in the drain channel 9 is higher than the liquid level in the reservoir 8, as shown in fig. 1, the drain opening 81 is closed, preventing the water in the drain channel 9 from flowing back into the reservoir 8. Therefore, the baffle 1 is arranged outside the reservoir, and the cross section of the baffle 1 is larger than that of the water outlet, so that the baffle 1 can be automatically controlled to move, the water outlet is opened, and the water outlet can be automatically closed when the liquid level in the drainage channel is too high, so that backflow is prevented.

In a preferred embodiment, as shown in fig. 6 and 7, the barrier 1 can be moved close to or away from the outer wall surface of the water reservoir 8 in a horizontal direction so that the drain opening 81 is switched between a closed state and an open state.

In a preferred embodiment, as shown in fig. 1 and 2, a transverse connecting rod 7 is arranged on the baffle plate 1 at the side away from the reservoir, and the transverse connecting rod 7 is a long metal rod welded on the baffle plate 1 and extends in the front-back direction along the sliding direction of the baffle plate 1; the rope 3 is connected with the baffle 1 through the transverse connecting rod 7; namely, one end of the rope 3 is connected with the transverse connecting rod 7, and the other end is connected with the balancing weight 2.

The connecting point between the rope and the baffle 1 can be arranged behind a pulley by arranging the transverse connecting rod 7, so that the direction of the tensile force applied to the baffle 1 by the rope is conveniently adjusted to be towards the direction of the water outlet, namely towards the front.

In a preferred embodiment, as shown in fig. 10, a longitudinal rod 71 is further disposed on the transverse connecting rod 7, the transverse connecting rod 7 is fixedly connected with the longitudinal rod 71, the rope 3 is fixedly connected with the longitudinal rod 71, and the acting force on the rope acts on the baffle 1 by fixedly connecting with the longitudinal rod 71; the height of the connecting node of the transverse connecting rod 7 and the rope is adjusted by arranging the longitudinal rod 71, so that the height position of the connecting node is increased; preferably, the longitudinal bar 71 is at a level substantially corresponding to the level of the connection node of the rope with the pulley located in front.

Preferably, as shown in fig. 10, the longitudinal rod 71 is rotatable, the longitudinal rod 71 rotates on the transverse connecting rod 7, the rope 3 can be wound on the longitudinal rod 71, so as to adjust the effective length of the rope 3, and further, the height of the counterweight block can be adjusted in the vertical direction, when the height of the counterweight block is lower, the counterweight block can still float even if the liquid level in the drainage channel is lower, the condition that the drainage outlet is opened is reduced, and water can be drained when the water level in the reservoir does not reach a preset value; when the height of the position of the balancing weight is higher, the balancing weight can float when the liquid level in the drainage channel is higher, the drainage outlet can be opened only when the preset condition is met, and the water can be drained when the water level in the reservoir reaches the preset value.

Preferably, when the longitudinal rod 71 rotates on the transverse connecting rod 7, a rotating disc 72 is arranged at the bottom of the longitudinal rod 71, the rotating disc 72 is rotatably mounted on the transverse connecting rod 7, and the transverse connecting rod 7 is driven to rotate by the rotation of the rotating disc 72;

a circular blocking piece 73 is arranged at the top of the longitudinal rod 71, and the blocking piece 73 and the longitudinal rod 71 are integrated and can synchronously rotate; the stopper 73 prevents the rope 3 from being separated from the longitudinal bar 71, and ensures that the rope 3 is stably wound around the longitudinal bar 71.

Preferably, a motor 74 for driving the longitudinal rod 71 to rotate is further provided on the transverse link 7, said motor 74 is preferably a brake stepping motor, and when the motor is powered off, it can be automatically locked to prevent the motor from reversing, and naturally, the longitudinal rod 71 can be prevented from rotating by itself under the action of the rope, and the motor spindle can only rotate when powered on and can rotate according to the control direction of the user. The brake stepping motor is an existing motor in the field, such as a brake stepping motor produced by Heidebao company in Germany.

A plurality of water outlets 81 are arranged on the reservoir, at least one emergency water outlet 82 is also arranged, a grid is arranged on the outer side of each water outlet, no grid is arranged on the outer side of each emergency water outlet 82, water drained from the emergency water outlets can directly enter the water drainage channel 9, an emergency baffle 10 is arranged on the outer side of each emergency water outlet 82, and the opening and closing of the emergency water outlets are controlled through the reciprocating movement of the emergency baffle 10;

the structure and the control principle of the emergency baffle 10 are basically consistent with those of the baffle 1, acting force is provided through the balancing weight, the emergency baffle 10 is tightly pressed on the outer wall surface of the reservoir, and only when the water level in the reservoir is high enough, the baffle 1 can be pushed by water pressure, so that the emergency water outlet 82 is opened.

Preferably, the emergency barrier 10 is opened when the water level in the reservoir reaches a maximum level. The maximum water level is higher than the predetermined water level, preferably 100cm to 150cm higher than the predetermined water level, so that water in the reservoir is generally difficult to reach the maximum water level, so that water is mostly discharged through the water outlet, and the water level in the reservoir can be raised to the maximum water level only when the grating is blocked by garbage and the water passing capacity is reduced or the water volume in the reservoir is suddenly increased due to heavy rainstorm and flood.

The emergency water outlet 82 may be disposed at both sides of the water outlet 81, or may be disposed above the water outlet 81;

when the emergency water outlet 82 is arranged on two sides of the water outlet 81, the weight of the corresponding counter weight block of the emergency baffle 10 is heavier, and a larger acting force can be provided for the emergency baffle 10.

In the present application, preferably, the emergency drain opening 82 is disposed above the drain opening 81, specifically, the height of the bottom of the emergency drain opening 82 is higher than the height of the bottom of the drain opening 81, and related structures such as pulleys, counter weights, cords and the like corresponding to the emergency drain opening 82 can be consistent with the structures corresponding to the drain opening, so as to facilitate operations such as installation and replacement.

Preferably, in the reservoir 8, a diving wall 83 is provided near the emergency outlet 82, the diving wall is fixedly connected with the inner wall of the reservoir, the diving wall surrounds the emergency outlet 82, water in the reservoir can enter the surrounding area of the diving wall through the top or the bottom of the diving wall 83, and when the emergency outlet is opened, the diving wall can block a part of garbage from being discharged from the emergency outlet.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on operational states of the present invention, and are only used for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The present invention has been described above in connection with preferred embodiments, but these embodiments are merely exemplary and merely illustrative. On the basis of the above, the invention can be subjected to various substitutions and modifications, and the substitutions and the modifications are all within the protection scope of the invention.

Claims

1. A hydraulic cleaning grid system for intercepting sewage at a rainwater drainage port and preventing backflow is characterized by comprising a grid (6) and a baffle plate (1) which are arranged on the outer side of a drainage port (81) on a reservoir (8);

wherein the grating (6) is positioned below the baffle (1),

when the water outlet (81) is opened, water in the reservoir flows out of the water outlet (81) and then downwards passes through the grating (6);

-intercepting the waste or dirt carried in the water by means of said grille (6);

the baffle (1) reciprocates above the grille (6) to control the opening and closing of the drain opening (81).

2. The rainwater drain intercepting and backflow preventing hydraulic cleaning grid system according to claim 1,

the grating (6) comprises a plurality of interception bars (61) arranged parallel to each other,

preferably, the length direction of the intercepting bar (61) is consistent with the moving direction of the baffle (1).

3. The rainwater drain intercepting and backflow preventing hydraulic cleaning grid system according to claim 2,

lateral baffles (61) are arranged on both sides of the grating (6),

a slide way (5) is arranged on the lateral baffle (61);

the baffle (1) slides back and forth along the slide way (5) and is close to or far away from the outer wall surface of the water storage tank (8),

preferably, when the baffle (1) is tightly attached to the outer wall surface of the water reservoir, the water outlet (81) is closed;

when a certain gap is formed between the baffle (1) and the outer wall surface of the reservoir, the water outlet (81) is opened;

when the baffle (1) slides towards the direction of the reservoir, the baffle (1) pushes the garbage or dirt trapped on the grating 6 back to the reservoir (8).

4. The rainwater drain intercepting and backflow preventing hydraulic cleaning grid system according to claim 3,

a poke rod (11) is arranged at the bottom of the baffle (1),

the poke rod (11) is inserted into the gap between the two adjacent interception rods (61),

the poke rod (11) moves back and forth along with the baffle (1) so as to remove the garbage or dirt clamped between the adjacent interception rods (61).

5. The rainwater drain intercepting and backflow preventing hydraulic cleaning grid system according to claim 1,

the system also comprises a balancing weight (2), and the balancing weight is connected with the baffle (1) through a rope (3);

the gravity of the balancing weight (1) is transmitted to the baffle (1) through the rope (3), so that the water outlet (81) is in a closed state.

6. The rainwater drain intercepting and backflow preventing hydraulic cleaning grid system according to claim 5,

the balancing weight (2) is arranged outside the water storage tank (8),

the system further comprises at least two pulleys (4),

the direction of the rope (3) is changed by winding around at least two pulleys (4), so that the baffle (1) is controlled to be attached to the outer wall surface of the water reservoir (8) by utilizing the gravity of the balancing weight, and the water outlet (81) is in a closed state.

7. The rainwater drain intercepting and backflow preventing hydraulic cleaning grid system according to claim 5,

when the water level in the reservoir (8) reaches a preset height which is higher than or equal to the height of the water outlet (81), the force of the water pressure in the reservoir (8) acting on the baffle (1) is larger than the force of the counterweight (2) acting on the baffle (1) through the rope (3), so that the baffle (1) is pushed open, and the water outlet (81) is switched to an open state from a closed state.

8. The rainwater drain intercepting and backflow preventing hydraulic cleaning grid system according to claim 5,

the water discharging opening (81) on the water storage tank (8) is communicated with the water discharging channel (9), namely, water in the water storage tank (8) passes through the water discharging opening (81) and the grating (6) and then enters the water discharging channel (9);

the baffle (1) and the balancing weight (2) are both positioned in the drainage channel (9);

the apparent density of the balancing weight (2) is less than the density of water;

preferably, the counterweight block comprises a heavy core (21) with density larger than that of water and a light-weight floating layer (22) coated outside the heavy core (21).

9. The rainwater drain intercepting and backflow preventing hydraulic cleaning grid system according to claim 1,

a transverse connecting rod (7) is arranged on one side of the baffle (1) which is far away from the reservoir,

the rope (3) is connected with the baffle (1) through the transverse connecting rod (7).

10. The rainwater drain intercepting and backflow preventing hydraulic cleaning grid system according to claim 1,

an emergency water outlet (82) is also arranged on the water storage tank (8),

an emergency baffle (10) is arranged on the outer side of the emergency water outlet (82),

the emergency baffle (10) is opened when the water level in the reservoir (8) reaches the highest water level;

preferably, a diving wall (83) is arranged in the reservoir (8) in the vicinity of the emergency drain (82).