Multi-step rainwater monitoring system

Abstract

The utility model relates to the field of rainwater monitoring, and discloses a multi-step rainwater monitoring system which comprises steps, a filtering system and an automatic monitoring system, the top of the steps is a top platform, the filtering system comprises a settling pond arranged on the top platform, multiple stages of filtering ponds are arranged on the steps, and each filtering pond is internally provided with a filtering material. The bottom of the upper-stage filter tank is higher than the lower-stage filter tank; the automatic monitoring system comprises a plurality of hydraulic valve mechanisms, the hydraulic valve mechanisms are arranged between the upper-stage filter tank and the lower-stage filter tank, and the higher the hydraulic pressure of the bottom of the upper-stage filter tank is, the larger the flow of the hydraulic valve mechanisms is. The rainwater flow is controlled according to the rainfall, so that the rainwater flow adapts to the filtering efficiency and the containing capacity of the rainwater monitoring system.

Description

Technical Field

[0001] The utility model relates to the field of rainwater monitoring, in particular to a multi-level rainwater monitoring system. Background Art

[0002] Sponge city is a new generation of urban stormwater management concept. It means that the city can adapt to environmental changes and respond to natural disasters caused by rainwater like a sponge, and has good elasticity. It can also be called a "water-elastic city". Therefore, it is very important to set up a rainwater monitoring system.

[0003] In the southern region, sometimes the rainfall is heavy and there is a need for timely drainage; sometimes the rainfall is small and the flow rate is slow, and impurities in the rainwater are easily accumulated, causing pollution to the surrounding environment; therefore, it is necessary to control the rainwater flow according to the amount of rainfall, and at the same time, make the rainwater flow and the filtering capacity and holding capacity of the rainwater monitoring system adapt to each other, so as to deal with impurities in the rainwater in a timely manner. Utility Model Content

[0004] The utility model aims to provide a multi-stage rainwater monitoring system, which controls the rainwater flow according to the amount of rainfall, so that the rainwater flow is adapted to the filtering efficiency and the holding capacity of the rainwater monitoring system.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a multi-step rainwater monitoring system, including steps, a filtering system and an automatic monitoring system, the top of the steps is a top platform, the filtering system includes a sedimentation tank arranged on the top platform, and multiple filter pools are arranged on the steps, each filter pool is provided with filter material, and the bottom of the upper filter pool is higher than the lower filter pool; the automatic monitoring system includes a number of hydraulic valve mechanisms, and the hydraulic valve mechanisms are arranged between the upper filter pool and the lower filter pool. The greater the hydraulic pressure at the bottom of the upper filter pool, the greater the flow rate of the hydraulic valve mechanism.

[0006] The beneficial effects of this program are:

[0007] 1. This solution sets the filtration system on the steps, and uses the height difference of the steps to form an equal height difference in the multi-stage filtration pool, so that rainwater can flow through the sedimentation tank and the multi-stage filtration pool in sequence under the action of gravity, thereby completing the filtration of rainwater.

[0008] 2. A hydraulic valve mechanism is set at the bottom of the filter pool to monitor the water pressure at the bottom of the filter pool. When the rainfall increases, the liquid level in the filter pool rises rapidly, and the hydraulic pressure at the bottom of the filter pool increases, thereby pushing open the hydraulic valve mechanism and increasing the flow rate between the two-stage filter pools, thereby discharging rainwater in time to avoid rainwater exceeding the capacity of the filter pool, which causes the filter pool to be unable to filter part of the rainwater; when the rainfall is small or the weather is sunny, the amount of rainwater in the filter pool is small and the liquid level is low. Rainwater flows directly out of the bottom of the filter pool, and the contact time between the activated carbon and adsorbents used for adsorption in the filter pool is short, resulting in low filtration efficiency. Therefore, the hydraulic valve mechanism blocks the discharge outlet at the bottom of the upper filter pool, reducing the rainwater discharge volume, raising the liquid level of the upper filter pool, and increasing the contact time between rainwater and adsorbent, thereby improving filtration efficiency.

[0009] Furthermore, the hydraulic valve mechanism includes a fixed baffle, the side of the fixed baffle is fixed to the side wall of the upper filter tank, the lower side of the fixed baffle is rotatably connected to a movable baffle, and the rotational connection position of the movable baffle and the fixed baffle is provided with damping. When there is no liquid in the upper filter tank, the movable baffle closes the gap between the fixed baffle and the bottom of the upper filter tank; when the hydraulic pressure at the bottom of the upper filter tank increases, the movable baffle rotates toward the side close to the lower filter tank, and the gap between the movable baffle and the bottom of the upper filter tank increases.

[0010] Furthermore, it also includes a circulation system, which includes an ornamental pool, an overflow pool, a reflow trough and a reflow pool. The lowest level filter pool is connected to the ornamental pool. The overflow pool is annular and circumferentially arranged at the edge of the ornamental pool. The reflow trough connects the overflow pool and the reflow pool. The reflow pool is located below the platform at the top of the steps. A reflow pump is provided in the reflow pool, and the outlet of the reflow pump is arranged in the sedimentation tank.

[0011] Furthermore, the circulation system also includes an arc-shaped green space, and a number of overflow troughs are provided between the green space and the overflow pool. A one-way valve is provided on each of the overflow troughs, and the one-way valve is used to limit the rainwater in the green space from flowing back to the overflow pool.

[0012] Furthermore, it also includes an electronic monitoring system, which includes a liquid level meter and a controller. The liquid level meter is set in the sedimentation tank. When the liquid level in the sedimentation tank is higher than the designed liquid level, the liquid level meter sends a stop signal to the controller, and the controller controls the reflux pump to stop working.

[0013] Furthermore, the electronic monitoring system includes a thermometer, which is arranged in the ornamental pool. The design liquid level includes a first design liquid level and a second design liquid level. The second design liquid level is higher than the first design liquid level. When the temperature in the ornamental pool is higher than the design temperature, the thermometer sends a heating signal to the controller, and the controller sets the design liquid level to the second design liquid level; when the temperature in the ornamental pool is lower than the design temperature, the thermometer sends a cooling signal to the controller, and the controller sets the design liquid level to the first design liquid level.

[0014] Furthermore, the multi-stage filter pool includes a sand and gravel filter pool, an activated carbon filter pool and a biological ceramsite filter pool from the upper level to the lower level.

[0015] This solution also has the following effects:

[0016] 1. The gap between the fixed baffle and the bottom of the upper filter tank forms a water outlet, and the movable baffle is arranged at the water outlet position. The movable baffle is rotatably connected to the lower side of the fixed baffle, so that the movable baffle forms a kind of upward-turning outward-opening door, thereby achieving the effect that the opening range of the movable baffle becomes larger as the water level in the pool rises; the rotating connection position of the movable baffle and the fixed baffle is provided with a damping to ensure that the movable baffle will only open when there is a certain amount of rainwater in the pool; and when the water level in the pool drops, the movable baffle will reset under its own weight until the movable baffle returns to the vertical state.

[0017] 2. The water in the ornamental pool needs to be filtered and replaced regularly. This plan directly adds the water circulation in the ornamental pool to the water circulation of the entire community, and introduces the filtered rainwater into the ornamental pool to ensure that the water in the ornamental pool remains clear for a long time. At the same time, the rainwater is also recycled. When there is more filtered water, the water in the ornamental pool overflows into the overflow pool, forming a water flow landscape at the edge of the ornamental pool. Then the water passes through the overflow pool and the return trough in turn into the return pool as a water storage measure; because water can only flow automatically to a lower place and cannot directly return to the sedimentation tank, this plan sets a return pump in the return pool to return the overflow water to the sedimentation tank, completing a cycle of rainwater collection, filtration, utilization and recycling.

[0018] 3. When the rainfall is too heavy and the return pool cannot hold rainwater, the water in the overflow pool flows back through the overflow trough into the green space. The soil in the green space can absorb a large amount of rainwater, thereby absorbing the rainwater. At the same time, a one-way valve is added to the overflow pool to prevent water with mud from flowing back to the return trough and entering the circulation, thereby avoiding increasing the filtration pressure of the sedimentation tank and filter tank and reducing the filtration efficiency.

[0019] 4. Monitor the water volume in the sedimentation tank through the liquid level meter, control the start and stop of the reflux pump, coordinate the flow relationship between the top and bottom of the step, and ensure the best filtration efficiency.

[0020] 5. In hot weather, the water temperature in the viewing pool is high. By starting the circulation pump, the heat of the viewing pool can be taken away, which has a cooling effect. It can not only make passers-by feel comfortable, but also prevent the landscape in the viewing pool from reducing its durability under high temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A top view of an embodiment;

[0022] Figure 2 This is a schematic diagram of the overall top view of the embodiment after the steps are hidden;

[0023] Figure 3 It is a left-side structural schematic diagram of the sedimentation tank, ornamental pool and several secondary filtration tanks of the embodiment. DETAILED DESCRIPTION

[0024] The following is further described in detail through specific implementation methods:

[0025] The figure marks in the drawings of the specification include: step 1, top platform 2, sedimentation tank 31, sand and gravel filter tank 32, activated carbon filter tank 33, biological ceramsite filter tank 34, hydraulic valve mechanism 4, fixed baffle 41, movable baffle 42, liquid level meter 51, thermometer 52, reflux pump 53, ornamental pool 61, overflow pool 62, reflux trough 63, reflux pool 64, green space 65, overflow trough 66.

[0026] Example

[0027] The multi-step rainwater monitoring system is suitable for locations with landscapes and steps such as residential areas and parks, and has both ornamental and rainwater circulation functions.

[0028] The embodiment is basically as follows Figure 1-Figure 3 As shown: Multi-step rainwater monitoring system, including step 1, filtration system, circulation system, electronic monitoring system and automatic monitoring system, such as Figure 1 As shown, the top of the steps 1 is the top platform 2, and the filtration system includes a sedimentation tank 31 arranged on the top platform 2. The sedimentation tank 31 is covered with a rainwater grate for collecting rainwater near the top platform 2 and preventing passers-by from falling into the sedimentation tank 31.

[0029] There are multi-stage filtration pools on step 1, such as Figure 3 As shown, the bottom of the upper filter pool is higher than the lower filter pool, and the multi-stage filter pool includes a sand and gravel filter pool 32, an activated carbon filter pool 33 and a biological ceramsite filter pool 34 from the upper level to the lower level. Quartz sand is placed in the sand and gravel filter pool 32 as filter material, activated carbon is placed in the activated carbon filter pool 33 as filter material, and biological ceramsite is placed in the biological ceramsite filter pool 34 as filter material; the automatic monitoring system includes two hydraulic valve mechanisms 4, and the two hydraulic valve mechanisms 4 are respectively arranged between the sand and gravel filter pool 32 and the activated carbon filter pool 33, and between the activated carbon filter pool 33 and the biological ceramsite filter pool 34. The greater the hydraulic pressure at the bottom of the upper filter pool, the greater the flow rate of the hydraulic valve mechanism 4.

[0030] The hydraulic valve mechanism 4 includes a fixed baffle 41, the side of which is fixed to the side wall of the upper filter tank, and a movable baffle 42 is rotatably connected to the lower side of the fixed baffle 41. The rotational connection method can be a hinge bolted between the fixed baffle 41 and the movable baffle 42, or a rotating shaft welded to the lower side of the fixed baffle 41, which passes through the upper side of the movable baffle 42 and is rotatably connected to the movable baffle 42. The rotational connection between the movable baffle 42 and the fixed baffle 41 is provided with damping (i.e., there is friction resistance during rotation). When there is no liquid in the upper filter tank, the movable baffle 42 closes the gap between the fixed baffle 41 and the bottom of the upper filter tank; when the hydraulic pressure at the bottom of the upper filter tank increases, the movable baffle 42 rotates toward the side closer to the lower filter tank, and the gap between the movable baffle 42 and the bottom of the upper filter tank increases, thereby increasing the water output of the upper filter tank.

[0031] like Figure 2 As shown, the circulation system is arranged within a height range of 3 meters above and below the bottom of the step 1. The circulation system includes an ornamental pool 61, an overflow pool 62, a reflow trough 63, a reflow pool 64 and an arc-shaped green space 65. The green space 65 is used to plant green plants. The lowest level filter pool is connected to the ornamental pool 61. The ornamental pool 61 is a circular pool with fountains and other landscapes. The overflow pool 62 is annular and circumferentially arranged at the edge of the ornamental pool 61. The reflow trough 63 connects the overflow pool 62 and the reflow pool 64. The bottom of the reflow trough 63 is inclined downward near one end of the reflow pool 64. The reflow pool 64 is located below the top platform 2 of the step 1. A reflow pump 53 is provided in the reflow pool 64, and the outlet of the reflow pump 53 is provided in the sedimentation tank 31.

[0032] There are four overflow troughs 66 between the green space 65 and the overflow pool 62. Each of the four overflow troughs 66 is equipped with a one-way valve. The one-way valve is used to limit the rainwater from the green space 65 from flowing back into the overflow pool 62. The bottom of the overflow trough 66 is inclined downward near one end of the overflow pool 62. Only when the rainfall is too heavy will the rainwater flow back into the green space 65.

[0033] The electronic monitoring system includes a liquid level gauge 51, a thermometer 52 and a controller. The liquid level gauge 51 and the thermometer 52 are electrically connected to the controller. The liquid level gauge 51 is model SIN-DP. The liquid level gauge 51 is bolted to the side wall of the sedimentation tank 31. The liquid level gauge 51 is used to measure the liquid level in the sedimentation tank 31. The thermometer 52 is bolted to the side wall of the ornamental pool 61. The thermometer 52 is used to measure the water temperature in the ornamental pool 61. When the liquid level in the sedimentation tank 31 is lower than the design liquid level, the liquid level gauge 51 sends a stop signal to the controller, and the controller controls the reflux pump 53 to start; when the liquid level in the sedimentation tank 31 is higher than the design liquid level, the liquid level gauge 51 sends a stop signal to the controller, and the controller controls the reflux pump 53 to stop working.

[0034] The design liquid level includes a first design liquid level and a second design liquid level. The first design liquid level is the liquid level with the best filtration efficiency at room temperature. The second design liquid level is higher than the first design liquid level and 15 cm lower than the upper edge of the sedimentation tank 31. When the temperature in the ornamental pool 61 is higher than the design temperature, the thermometer 52 sends a temperature increase signal to the controller, and the controller sets the design liquid level to the second design liquid level; when the temperature in the ornamental pool 61 is lower than the design temperature, the thermometer 52 sends a temperature decrease signal to the controller, and the controller sets the design liquid level to the first design liquid level. The design temperature is the temperature that the human body feels hotter. In this embodiment, the design temperature is 30 degrees Celsius.

[0035] The above description is merely an embodiment of the present invention, and the commonly known specific technical solutions and / or features of the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be considered as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Multi-level rainwater monitoring system, characterized by: It includes steps, a filtering system and an automatic monitoring system. The top of the steps is a top platform. The filtering system includes a sedimentation tank arranged on the top platform. There are multi-stage filtering tanks on the steps. Each filtering tank is provided with filter material. The bottom of the upper filtering tank is higher than the lower filtering tank. The automatic monitoring system includes several hydraulic valve mechanisms. The hydraulic valve mechanism is arranged between the upper filtering tank and the lower filtering tank. The greater the hydraulic pressure at the bottom of the upper filtering tank, the greater the flow rate of the hydraulic valve mechanism.

2. The multi-stage rainwater monitoring system according to claim 1, characterized in that: The hydraulic valve mechanism includes a fixed baffle, the side of the fixed baffle is fixed to the side wall of the upper filter tank, and the lower side of the fixed baffle is rotatably connected to a movable baffle. The rotational connection position of the movable baffle and the fixed baffle is provided with damping. When there is no liquid in the upper filter tank, the movable baffle closes the gap between the fixed baffle and the bottom of the upper filter tank; when the hydraulic pressure at the bottom of the upper filter tank increases, the movable baffle rotates toward the side close to the lower filter tank, and the gap between the movable baffle and the bottom of the upper filter tank increases.

3. The multi-stage rainwater monitoring system according to claim 1, characterized in that: It also includes a circulation system, which includes an ornamental pool, an overflow pool, a reflow trough and a reflow pool. The lowest level filter pool is connected to the ornamental pool. The overflow pool is annular and circumferentially arranged at the edge of the ornamental pool. The reflow trough connects the overflow pool and the reflow pool. The reflow pool is located below the platform at the top of the steps. A reflow pump is provided in the reflow pool, and the outlet of the reflow pump is arranged in the sedimentation tank.

4. The multi-stage rainwater monitoring system according to claim 3, characterized in that: The circulation system also includes an arc-shaped green space. Several overflow troughs are arranged between the green space and the overflow pool. Each overflow trough is provided with a one-way valve, which is used to limit the rainwater in the green space from flowing back to the overflow pool.

5. The multi-stage rainwater monitoring system according to claim 4, characterized in that: It also includes an electronic monitoring system, which includes a liquid level meter and a controller. The liquid level meter is set in the sedimentation tank. When the liquid level in the sedimentation tank is higher than the designed liquid level, the liquid level meter sends a stop signal to the controller, and the controller controls the reflux pump to stop working.

6. The multi-stage rainwater monitoring system according to claim 5, characterized in that: The electronic monitoring system includes a thermometer, which is arranged in the ornamental pool. The design liquid level includes a first design liquid level and a second design liquid level. The second design liquid level is higher than the first design liquid level. When the temperature in the ornamental pool is higher than the design temperature, the thermometer sends a heating signal to the controller, and the controller sets the design liquid level to the second design liquid level; when the temperature in the ornamental pool is lower than the design temperature, the thermometer sends a cooling signal to the controller, and the controller sets the design liquid level to the first design liquid level.

7. The multi-stage rainwater monitoring system according to claim 1, characterized in that: The multi-stage filter pool includes a sand and gravel filter pool, an activated carbon filter pool and a biological ceramsite filter pool from the upper level to the lower level.

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