Rainwater garden overflow structure capable of being automatically lifted and adjusted according to water quantity
By designing an automatically rising and lowering overflow structure in the rain garden, the problems of overflow outlets affecting the landscape and lack of compatibility are solved, and the overflow outlets are made flush with the ground or water surface, improving the adaptability and aesthetics of the rain garden.
Patent Information
- Application Number
- CN202511145026.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2025-09-23
AI Technical Summary
Existing rain garden overflow outlets are not only aesthetically pleasing but also lack compatibility and cannot automatically adjust according to water levels.
A structure including a well shaft, side wall baffles, lower well cover and upper well cover is designed. Through the cooperation of slide rails and positioning beads, the overflow outlet can be automatically raised and lowered to ensure that the overflow outlet is flush with the ground or water surface and adapt to different water level changes.
It improves the compatibility and aesthetics of the overflow outlet, enabling it to adapt to different situations such as no water, water storage, and large water volume. Its simple structure and strong practicality facilitate mass production.
Smart Images
Figure CN120683930A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of rain garden overflow outlets, and in particular to a rain garden overflow structure capable of automatically rising and falling according to water volume. Background Art
[0002] To alleviate the urban heat island effect and the common problem of flooding during rainy periods, China is actively promoting sponge city construction, driven by the Ministry of Housing and Urban-Rural Development. Rain gardens are a common feature of sponge city design and construction. These facilities typically require overflow outlets to drain excess water into stormwater pipes. Currently, these overflow outlets are typically located in the center of the rain garden, 10 to 30 cm above the surrounding floor. This makes them appear prominent in the sunken environment, severely impacting the landscape. Summary of the Invention
[0003] In response to the deficiencies in the prior art, the present invention provides a rain garden overflow structure that can automatically rise and fall according to the amount of water. The present invention can automatically adjust according to the height of the water level in the rain garden, always flush with the adjacent ground or water surface, and can be applied to various situations such as rain gardens without water, storing water, and overflowing when there is a large amount of water, thereby improving the compatibility and aesthetics of the rain garden overflow outlet.
[0004] The technical solution adopted in the present invention is: A rain garden overflow structure that can automatically rise and fall according to the amount of water, including: a wellbore, wherein the wellbore is tubular; A side wall water retaining plate, wherein the side wall water retaining plate is tubular and has a plurality of sliding rails arranged at intervals along the axial direction of the outer wall of the side wall water retaining plate, and the lower portion of the side wall water retaining plate is disposed in the wellbore; The lower manhole cover is provided with a groove on one side of the lower manhole cover close to the side wall water retaining plate, the lower inner rail and the upper inner rail of the slide rail are connected to the inner wall of the wellbore and the groove respectively, the upper part of the side wall water retaining plate is provided in the lower manhole cover, the lower manhole cover is in contact with the top surface of the wellbore, and the center of the lower manhole cover is provided with an outer sleeve of the shaft; The upper manhole cover is arranged above the lower manhole cover, and the inner sleeve of the shaft is arranged at the position of the upper manhole cover corresponding to the outer sleeve of the shaft; the inner sleeve of the shaft is plugged into and matched with the outer sleeve of the shaft corresponding to it, and the lower manhole cover and the upper manhole cover are movably connected through the inner sleeve of the shaft and the outer sleeve of the shaft.
[0005] Preferably, the rain garden overflow structure that can automatically rise and fall according to the water volume is provided with a plurality of first overflow holes arranged at intervals along the circumferential direction on the upper portion of the outer wall of the side wall water retaining plate.
[0006] Preferably, the rain garden overflow structure that can automatically rise and fall and adjust according to the amount of water, wherein: a sleeve groove is provided on the outer wall of the inner sleeve of the shaft, a positioning bead that cooperates with the sleeve groove is provided on the inner wall of the outer sleeve of the shaft, the positioning bead is slidably connected to the sleeve groove, and the lower manhole cover and the upper manhole cover are movably connected to the sleeve groove through the positioning bead.
[0007] Preferably, the rain garden overflow structure that can automatically rise and fall and adjust according to the water volume, wherein: the positioning beads and the sleeve slide groove are in a clearance sliding fit, and the sleeve slide groove is set at a spiral rising angle.
[0008] Preferably, the rain garden overflow structure that can automatically rise and fall and adjust according to the water volume, wherein: the lower manhole cover is provided with a plurality of second overflow holes arranged at intervals along the circumference; the upper manhole cover is provided with a plurality of third overflow holes arranged at intervals along the circumference; the second overflow holes and the third overflow holes are both fan-shaped; when the upper manhole cover is not floated, the third overflow hole and the second overflow hole are staggered up and down, and the top is in a closed state; when the water level rises, the third overflow hole and the second overflow hole overlap up and down.
[0009] Preferably, the rain garden overflow structure that can automatically rise and fall according to the water volume is characterized in that: the rotation angle of the sleeve slide along the positioning bead on the plane is the same as the angle at which the third overflow hole rotates to overlap with the second overflow hole.
[0010] Preferably, the rain garden overflow structure that can automatically rise and fall according to the amount of water, wherein: the slide rail includes an outer rail, and the outer rail of the slide rail is connected to the outer wall of the side wall water retaining plate.
[0011] Preferably, the rain garden overflow structure that can automatically rise and fall according to the water volume, wherein: the length of the slide rail is the same as the height of the side wall water retaining plate, and the length of the upper inner rail is the same as the height of the first overflow hole.
[0012] Preferably, in the rain garden overflow structure that can automatically rise and fall according to the amount of water, the sliding resistance of the upper inner rail of the slide rail is greater than the sliding resistance of the lower inner rail.
[0013] Advantages of the invention: (1) The rain garden overflow structure of the present invention, which can automatically rise and fall according to the amount of water, is simple in structure, compact, highly practical, and convenient for mass production. It can automatically adjust according to the height of the water level in the rain garden and always be flush with the adjacent ground or water surface. It can be applied to various situations such as the rain garden having no water, storing water, and overflowing when there is a large amount of water, thereby improving the compatibility of the rain garden overflow outlet.
[0014] (2) The overflow structure of the rain garden of the present invention can be automatically raised and lowered according to the amount of water, is flexible to use, and has a good landscape effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a diagram showing the disassembled components of a rain garden overflow structure that can automatically rise and fall according to the amount of water.
[0016] Figure 2 It is a structural schematic diagram of the cooperation between the inner sleeve and the outer sleeve of the shaft according to the present invention.
[0017] Figure 3 This is a diagram of the present invention in a retracted state in a rain garden without water.
[0018] Figure 4 This is a diagram of the present invention showing the lower manhole cover in a floating state and the upper manhole cover in a retracted state in a rain garden water storage scenario.
[0019] Figure 5 This is a diagram of the present invention showing the lower manhole cover in a floating state and the upper manhole cover in a spirally opening state in a rain garden overflow scenario. DETAILED DESCRIPTION
[0020] The present invention will be further described below with reference to specific drawings and embodiments.
[0021] like Figure 1-Figure 2 , a rain garden overflow structure that can automatically rise and fall according to the amount of water, comprising: A wellbore 4, wherein the wellbore 4 is tubular; A sidewall water retaining plate 1 is tubular, and a plurality of spaced-apart slide rails 13 are provided along the axial direction of the outer wall of the sidewall water retaining plate 1. The lower portion of the sidewall water retaining plate 1 is provided in the wellbore 4; The lower manhole cover 2 is provided with a groove 24 on one side of the lower manhole cover 2 close to the side wall water retaining plate 1. The lower inner rail and the upper inner rail of the slide rail 12 are connected to the inner wall of the well shaft 4 and the groove 24 respectively. The upper part of the side wall water retaining plate 1 is provided in the lower manhole cover 2. The lower manhole cover 2 is in contact with the top surface of the well shaft 4. The center of the lower manhole cover 2 is provided with an outer shaft sleeve 22. The upper manhole cover 3 is arranged above the lower manhole cover 2, and the upper manhole cover 3 is provided with an inner shaft sleeve 32 at a position corresponding to the outer shaft sleeve 22; the inner shaft sleeve 32 is plugged into and matched with the outer shaft sleeve 22 arranged corresponding thereto, and the lower manhole cover 2 and the upper manhole cover 3 are movably connected through the inner shaft sleeve 32 and the outer shaft sleeve 22.
[0022] The upper part of the outer wall of the side wall water retaining plate 1 is provided with a plurality of first overflow holes 11 arranged at intervals along the circumferential direction; the outer wall of the inner sleeve 32 of the shaft is provided with a sleeve slide groove 33, and the inner wall of the outer sleeve 22 of the shaft is provided with a positioning bead 23 that cooperates with the sleeve slide groove 33. The positioning bead 23 is slidably connected with the sleeve slide groove 33, and the lower manhole cover 2 and the upper manhole cover 3 are movably connected with the sleeve slide groove 33 through the positioning bead 23; the positioning bead 23 and the sleeve slide groove 33 are in clearance sliding cooperation, and the sleeve slide groove 33 is arranged at a spiral ascending angle.
[0023] The lower manhole cover 2 is provided with a plurality of second overflow holes 21 arranged at intervals along the circumference; the upper manhole cover 3 is provided with a plurality of third overflow holes 31 arranged at intervals along the circumference; the second overflow holes 21 and the third overflow holes 31 are both fan-shaped; when the upper manhole cover 3 is not floated, the third overflow holes 31 and the second overflow holes 21 are staggered up and down, and the top is in a closed state; when the water level rises, the third overflow holes 31 and the second overflow holes 21 are overlapped up and down, and the top is in an open state, so that water can overflow from the top.
[0024] The rotation angle of the sleeve slide groove 33 along the plane of the positioning bead 23 is the same as the angle at which the third overflow hole 31 rotates to overlap with the second overflow hole 21; the slide rail 12 includes an outer rail, and the outer rail of the slide rail 12 is connected to the outer wall of the side wall water retaining plate 1; the length of the slide rail 13 is the same as the height of the side wall water retaining plate 1, and the length of the upper inner rail is the same as the height of the first overflow hole 11.
[0025] The sliding resistance of the upper inner rail of the slide rail 12 is greater than the sliding resistance of the lower inner rail.
[0026] The lower part of the side wall water retaining plate 1 is a solid body, and the upper part is provided with evenly distributed side wall overflow holes 11. Three groups of slide rails are equidistantly distributed along the outer wall of the side wall water retaining plate 1. The upper ends of the three groups of slide rails 12 are connected to the grooves 24 of the lower manhole cover 2, and the lower parts are connected to the inner walls of the wellbore 4. When the slide rails 12 maintain their initial stationary state, the lower solid part of the side wall water retaining plate 1 can be completely retracted into the wellbore 4, and the upper side wall overflow holes 11 can be completely retracted into the grooves 24 of the lower manhole cover 2. At this time, the lower manhole cover 2 fits with the wellbore 4.
[0027] The lower manhole cover 2 and the upper manhole cover 3 are both made of lightweight materials that can float on the water surface. The lightweight material can be one of expanded polypropylene (EPP) and polyvinyl chloride (PVC) foam; the outer rails of the three sets of slide rails 12 are connected and fixed to the outer wall of the side wall water retaining plate 1, and the lower inner rails and upper inner rails of the slide rails 12 are respectively connected and fixed to the inner wall of the well shaft 4 and the groove 24 of the lower manhole cover 2. When there is no water, due to the action of gravity, the lower inner rails and upper inner rails of the slide rails 12 are completely hidden in the outer rails. When the water level rises and drives the lower manhole cover 2 to float, the lower manhole cover 2 first drives the lower inner rail connected and fixed to the inner wall of the well shaft 4 to gradually move up. It gradually slides out of the outer rail. At this time, the lower solid part of the side wall water retaining plate 1 is gradually exposed, and it is in a water storage state. When the water level rises further, the upper inner rail connected and fixed to the groove 24 of the lower manhole cover 2 gradually slides out of the outer rail. At this time, the side wall overflow hole 11 on the upper part of the side wall water retaining plate 1 is gradually exposed, and it is in an overflow state; when the water level rises to the upper manhole cover 3, the upper manhole cover 3 floats on the water surface. As the water level rises, the sleeve slide groove 33 is driven to spirally rise along the positioning bead 23, and the upper manhole cover 3 is driven to rotate at a certain angle, so that the third overflow hole 31 gradually rotates to overlap with the second overflow hole 21 up and down, and top overflow is performed.
[0028] The length of the upper inner rail of the slide rail 12 is consistent with the height of the overflow hole 11 on the side wall, and can be completely hidden in the groove 24 of the lower manhole cover 2. The lower inner rail can be completely hidden in the wellbore 4, and the sliding resistance of the upper inner rail is greater than that of the lower inner rail. The slide rail of the present invention can be a steel ball slide rail.
[0029] The working principle of the present invention is explained below using rain garden waterless scenario, water storage scenario and overflow scenario: like Figure 3 As shown, the inner and outer rails of the slide rail 12 are in a retracted state, the side wall water retaining plate 1 is completely retracted into the wellbore 4 and the lower manhole cover 2, the lower manhole cover 2 is close to the top surface of the wellbore 4, the upper manhole cover 3 is close to the lower manhole cover 2, and the inner sleeve 32 of the connecting shaft is completely retracted into the outer sleeve 22 of the connecting shaft. At this time, the upper manhole cover 3 is flush with the adjacent ground.
[0030] like Figure 4 As shown, the lower manhole cover 2 floats up with the water level, driving the inner rail connected to the slide rail 12 and the wellbore 4 to draw out the outer rail, and the side wall water retaining plate 1 moves upward, and the lower solid part is in a water storage state. As the water level continues to rise, the lower manhole cover 2 continues to float up, driving the inner rail connected to the slide rail 12 and the lower manhole cover 2 to draw out the groove 24, and the first overflow hole 11 on the upper part of the side wall water retaining plate 1 is exposed, showing a side wall overflow state. At this time, the upper manhole cover 3 is close to the lower manhole cover 2, the inner sleeve 32 of the connecting shaft is completely retracted into the outer sleeve 22 of the connecting shaft, and the upper manhole cover 3 is flush with the adjacent water surface.
[0031] like Figure 5As shown, the inner rail of the slide rail 12 connected to the wellbore 4 and the inner rail connected to the lower manhole cover 2 are in the maximum stretched state, the side wall water retaining plate 1 is completely exposed, and the sleeve slide groove 33 of the inner sleeve 32 of the connecting shaft moves spirally upward to the top along the positioning bead 23 of the outer sleeve 22 of the connecting shaft, driving the third overflow hole 31 of the upper manhole cover 3 to rotate until it is aligned with the second overflow hole 21 of the lower manhole cover 2. At this time, the top surface is in an overflow state.
[0032] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. A rain garden overflow structure that can automatically rise and fall according to the amount of water, characterized by: include: A wellbore (4), wherein the wellbore (4) is tubular; A side wall water retaining plate (1), the side wall water retaining plate (1) is tubular, a plurality of sliding rails (13) are provided along the axial direction of the outer wall of the side wall water retaining plate (1), and the lower portion of the side wall water retaining plate (1) is provided in the wellbore (4); A lower manhole cover (2) is provided with a groove (24) on one side of the lower manhole cover (2) close to the side wall water retaining plate (1); a lower inner rail and an upper inner rail of the slide rail (12) are connected to the inner wall of the wellbore (4) and the groove (24), respectively; the upper portion of the side wall water retaining plate (1) is provided in the lower manhole cover (2); the lower manhole cover (2) and the top surface of the wellbore (4) are in contact; and an outer shaft sleeve (22) is provided at the center of the lower manhole cover (2); An upper manhole cover (3) is provided above the lower manhole cover (2), and an inner shaft sleeve (32) is provided at a position of the upper manhole cover (3) corresponding to the outer shaft sleeve (22); the inner shaft sleeve (32) and the outer shaft sleeve (22) provided corresponding thereto are plug-fitted, and the lower manhole cover (2) and the upper manhole cover (3) are movably connected via the inner shaft sleeve (32) and the outer shaft sleeve (22).
2. The rain garden overflow structure capable of automatically rising and falling according to water volume according to claim 1 is characterized in that: A plurality of first overflow holes (11) arranged at intervals are provided on the upper portion of the outer wall of the side wall water retaining plate (1) along the circumferential direction.
3. The rain garden overflow structure capable of automatically rising and falling according to water volume according to claim 1 is characterized in that: A sleeve groove (33) is provided on the outer wall of the inner sleeve (32) of the shaft, and a positioning bead (23) that cooperates with the sleeve groove (33) is provided on the inner wall of the outer sleeve (22) of the shaft. The positioning bead (23) is slidably connected to the sleeve groove (33), and the lower manhole cover (2) and the upper manhole cover (3) are movably connected to the sleeve groove (33) through the positioning bead (23).
4. The rain garden overflow structure capable of automatically rising and falling according to water volume according to claim 3 is characterized in that: The positioning bead (23) and the sleeve slide groove (33) are in clearance sliding engagement, and the sleeve slide groove (33) is arranged at a spiral ascending angle.
5. The rain garden overflow structure capable of automatically rising and falling according to water volume according to claim 3 is characterized in that: The lower manhole cover (2) is provided with a plurality of second overflow holes (21) arranged at intervals along the circumference; the upper manhole cover (3) is provided with a plurality of third overflow holes (31) arranged at intervals along the circumference; the second overflow holes (21) and the third overflow holes (31) are both fan-shaped; when the upper manhole cover (3) is not floated, the third overflow hole (31) and the second overflow hole (21) are staggered in vertical arrangement, and the top is in a closed state; when the water level rises, the third overflow hole (31) and the second overflow hole (21) are overlapped in vertical arrangement.
6. The rain garden overflow structure capable of automatically rising and falling according to water volume according to claim 5 is characterized in that: The rotation angle of the sleeve sliding groove (33) along the positioning bead (23) on the plane is the same as the angle at which the third overflow hole (31) rotates to overlap with the second overflow hole (21) from top to bottom.
7. The rain garden overflow structure capable of automatically rising and falling according to water volume according to claim 1 is characterized in that: The slide rail (12) comprises an outer rail, and the outer rail of the slide rail (12) is connected to the outer wall of the side wall water retaining plate (1).
8. The rain garden overflow structure capable of automatically rising and falling according to water volume according to claim 2 is characterized in that: The length of the slide rail (13) is the same as the height of the side wall water retaining plate (1), and the length of the upper inner rail is the same as the height of the first overflow hole (11).
9. The rain garden overflow structure capable of automatically rising and falling according to water volume according to claim 1 is characterized in that: The sliding resistance of the upper inner rail of the slide rail (12) is greater than the sliding resistance of the lower inner rail.