Gravity lifting type rainwater collecting system

Abstract

The utility model discloses a gravity lifting type rainwater collecting system, which comprises a gravity lifting type collecting well and a variable-diameter collecting pipe, the gravity lifting type collecting well comprises a collecting well main body and a lifting well which is elastically connected with the interior of the collecting well main body, and the variable-diameter collecting pipe is connected with the collecting well main body. The variable-diameter collecting pipe comprises an inner-layer pipe and an outer-layer pipe, the inner-layer pipe is fixed on the upper side of an inner cavity of the outer-layer pipe, and a water outlet of the lifting well is at least partially communicated with the variable-diameter collecting pipe. According to the gravity lifting type rainwater collecting system, the lifting well elastically connected to the interior of the collecting well body is adopted for containing rainwater. When the water quantity is small, the lifting well is at a high position, the water outlet of the lifting well is aligned and communicated with the inner-layer pipe, the pipeline circulation cross sectional area is small, and the water flow speed can be ensured. When the water volume is large, the lifting well is located at a low position, the water outlet of the lifting well is aligned and communicated with the outer-layer pipe, the pipeline circulation cross sectional area is large, and the drainage speed can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of rainwater collection, in particular to a gravity lifting type rainwater collection system. Background Art

[0002] Traditional rainwater collection wells usually use fixed wells and fixed diameter pipes for collection, and cannot adaptively adjust the drainage rate according to rainfall. When the water flow is constant, the larger the cross-sectional area of ​​the pipe, the lower the water flow rate. In the existing rainwater collection system, in order to prevent the flow rate in the pipe from being too low, the cross-sectional area of ​​the pipe is generally designed according to the annual rainfall, resulting in the pipe design diameter being unable to cope with the impact of extreme weather. In the event of extreme rainfall, the cross-sectional area of ​​the pipe is not large enough and the water flow rate is too slow, resulting in the inability to discharge the rainwater on the ground in time, causing waterlogging disasters. If the cross-sectional area of ​​the pipe is designed to be too large, it is easy to have a small amount of water and slow water flow when the precipitation is low, and it is impossible to meet the drainage design flow rate requirements. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of the utility model is to provide a gravity-lift rainwater collection system that can adjust the pipeline flow area according to the water volume to meet the drainage needs of normal weather and extreme rainfall weather.

[0004] The utility model solves the above problems through the following technical means:

[0005] A gravity-lift rainwater collection system includes a gravity-lift collection well and a variable-diameter collection pipe. The gravity-lift collection well includes a collection well body and an elastically connected lifting well inside the well. The variable-diameter collection pipe is connected to the collection well body. The variable-diameter collection pipe includes an inner tube and an outer tube. The inner tube is fixed on the upper side of the inner cavity of the outer tube. The water outlet of the lifting well is at least partially connected to the variable-diameter collection pipe.

[0006] Furthermore, the variable diameter collecting pipe includes a large diameter pipe section and a small diameter pipe section, wherein the small diameter pipe section is arranged at a flat terrain, and the large diameter pipe section is arranged at a descending terrain.

[0007] Furthermore, the collecting well body is connected to the bottom of the lifting well via a first spring.

[0008] Furthermore, the large-diameter pipe section is connected to the ground via a second spring, and the water outlet of the large-diameter pipe section is at least partially connected to the water inlet of the small-diameter pipe section.

[0009] Furthermore, a limiting member is provided in the collection well body.

[0010] Furthermore, the outer side wall of the elevator shaft is provided with a guide support portion.

[0011] Furthermore, a limiting portion is provided at the water inlet of the small-diameter pipe section.

[0012] The utility model has at least the following beneficial effects:

[0013] The utility model gravity lifting rainwater collection system first adopts a lifting well elastically connected to the collection well body to hold rainwater, and can automatically adjust the height of the lifting well according to the amount of water in the lifting well. When the amount of water is small, the lifting well is at a high position, the water outlet of the lifting well is aligned and connected with the inner layer pipe, the pipe flow cross-sectional area is small, and the water flow rate can be ensured. When the amount of water is large, the lifting well is at a low position, the water outlet of the lifting well is aligned and connected with the outer layer pipe, the pipe flow cross-sectional area is large, and the drainage speed can be accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a schematic diagram of the structure disclosed in the preferred embodiment of the utility model;

[0016] Figure 2 is a cross-sectional schematic diagram of an inner tube fixed to the upper side of the inner cavity of an outer tube;

[0017] Figure 3 It is a schematic diagram of the connection between the large diameter pipe section and the small diameter pipe section in the high position state;

[0018] Figure 4 It is a schematic diagram of the connection between the large-diameter pipe section and the small-diameter pipe section in a low position.

[0019] Figure numerals: 1. Collection well body; 2. Lifting well; 3. First spring connection; 4. Small diameter pipe section; 5. Large diameter pipe section; 6. Movable joint. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more specific. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] like Figure 1-Figure 4As shown, the utility model discloses a gravity lifting rainwater collection system, including a gravity lifting collection well and a variable diameter collection pipe, wherein the gravity lifting collection well includes a collection well body 1 and an elastically connected lifting well 2 therein, wherein the elastic connection is to connect the collection well body 1 with the bottom of the lifting well 2 through a first spring. The variable diameter collection pipe is connected to the collection well body 1, and the variable diameter collection pipe includes an inner layer pipe and an outer layer pipe, wherein the inner layer pipe is fixed on the upper side of the inner cavity of the outer layer pipe, and the water outlet of the lifting well 2 is at least partially connected to the variable diameter collection pipe.

[0023] The lifting well elastically connected to the main body of the collection well is used to hold rainwater, and the height of the lifting well can be automatically adjusted according to the amount of water in the lifting well. When the amount of water is small, the lifting well is at a high position, and the outlet of the lifting well is aligned and connected with the inner pipe, and the pipeline flow cross-sectional area is small, which can ensure the flow rate of water. When the amount of water is large, the lifting well is at a low position, and the outlet of the lifting well is aligned and connected with the outer pipe, and the pipeline flow cross-sectional area is large, which can speed up the drainage speed. When the outlet of the lifting well is aligned and connected with the outer pipe, the inner pipe is also on the docking surface. Even if the outer pipe is only partially aligned with the outlet of the lifting well, it can also increase the drainage cross-sectional area.

[0024] Preferably, the variable diameter collecting pipe includes a large diameter pipe section 5 and a small diameter pipe section 4, wherein the small diameter pipe section 4 is arranged at a flat terrain, and the large diameter pipe section 5 is arranged at a dipped terrain. Flat terrain or dipped terrain refers to the undulating trend of terrain along the direction of water flow, and generally, a pipe that circulates by the deadweight of water flow will not be arranged at a rising terrain. According to the actual environment, a plurality of large diameter pipe sections 5 and small diameter pipe sections 4 can be arranged, and a large diameter pipe section is arranged at a dipped terrain. The gravitational potential energy of the water flow itself is utilized, and the terrain is used to ensure that the water flow speed meets the requirements. Compared with the same pipe diameter arrangement method, rapid discharge can be achieved when the water volume is too large, effectively reducing the situation of ground waterlogging. When multiple large diameter pipe sections and small diameter pipe sections are provided, the water outlet of the small diameter pipe section and the water inlet of the large diameter pipe section can be connected by a movable joint 6.

[0025] Preferably, the large diameter pipe section 5 is connected to the ground through a second spring, and the water outlet of the large diameter pipe section 5 is at least partially connected to the water inlet of the small diameter pipe section 4. The effect produced here is similar to the connection between the water outlet of the lifting shaft and the variable diameter collection pipe, both of which change the height through the gravity of the water. Figure 3 and Figure 4 In order to effectively connect the large diameter pipe section and the small diameter pipe section, the large diameter pipe section is set at the outlet so that the inner pipe is fixed to the lower side of the outer pipe. When the large diameter pipe section is in a high position, the inner pipe of the large diameter pipe section is connected to the inner pipe of the small diameter pipe section. When the large diameter pipe section is in a low position, the outer pipe of the large diameter pipe section is connected to the outer pipe of the small diameter pipe section.

[0026] Preferably, a limiter is provided in the collection well body 1. Specifically, the limiter is provided at a certain height at the bottom of the collection well, and plays a limiting role when the lifting well is lowered to align the water outlet with the outer tube, thereby preventing the lifting well from being further lowered. In a preferred embodiment, no additional limiter may be provided at the highest position of the lifting well, and by selecting a suitable length and elastic modulus of the first spring, the water outlet is aligned with the inner tube when the lifting well is at the highest position.

[0027] Preferably, the outer wall of the elevator shaft 2 is provided with a guide support. The guide support is arranged around the upper end of the elevator shaft and contacts the inner wall of the collection shaft body. When the elevator shaft moves in the collection shaft body, the guide support can play a guiding role to prevent the elevator shaft from tilting.

[0028] Preferably, the water inlet of the small diameter pipe section 4 is provided with a limiting portion. Specifically, the limiting portion is arranged at the bottom of the water inlet of the small diameter pipe section and extends out of the pipe mouth for a certain distance. When the water outlet of the large diameter pipe section is at the lowest position, it contacts the limiting portion of the small diameter pipe section and does not continue to drop. At this time, the outer layer tube of the large diameter pipe section is aligned with the outer layer tube of the small diameter pipe section. It is only necessary to set a limiting portion at the connection with the water outlet of the large diameter pipe section, and it is not necessary to set it at the connection with the lifting shaft.

[0029] In summary, the gravity-lift rainwater collection system of this embodiment can adjust the pipeline flow area according to the water volume to adapt to the drainage needs of normal weather and extreme rainfall weather.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A gravity-lift rainwater collection system, characterized in that: It comprises a gravity lifting collection well and a variable diameter collection pipe, wherein the gravity lifting collection well comprises a collection well body (1) and a lifting well (2) elastically connected thereto, wherein the variable diameter collection pipe is connected to the collection well body (1), wherein the variable diameter collection pipe comprises an inner layer pipe and an outer layer pipe, wherein the inner layer pipe is fixed on the upper side of the inner cavity of the outer layer pipe, and the water outlet of the lifting well (2) is at least partially connected to the variable diameter collection pipe.

2. The gravity-lift rainwater collection system according to claim 1, characterized in that: The variable diameter collecting pipe comprises a large diameter pipe section (5) and a small diameter pipe section (4), wherein the small diameter pipe section (4) is arranged at a flat terrain, and the large diameter pipe section (5) is arranged at a descending terrain.

3. The gravity-lift rainwater collection system according to claim 2, characterized in that: The collecting well body (1) is connected to the bottom of the lifting well (2) via a first spring (3).

4. The gravity-lift rainwater collection system according to claim 3, characterized in that: The large diameter pipe section (5) is connected to the ground via a second spring, and the water outlet of the large diameter pipe section (5) is at least partially connected to the water inlet of the small diameter pipe section (4).

5. The gravity-lift rainwater collection system according to claim 4, characterized in that: A limiting component is provided inside the collection well body (1).

6. The gravity-lift rainwater collection system according to claim 5, characterized in that: The outer side wall of the lifting shaft (2) is provided with a guide support portion.

7. The gravity-lift rainwater collection system according to claim 6, characterized in that: The water inlet of the small-diameter pipe section (4) is provided with a limiting portion.

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