Sponge city unpowered slow release device

Abstract

The utility model provides a sponge city unpowered slow-release device which comprises a slow-release box body, a water inlet hole is formed in the side wall of the slow-release box body, one end of a water inlet pipe is connected with the water inlet hole, and the other end of the water inlet pipe is connected with a floating ball. A drain hole is formed in the lower end of the slow-release box body; the water inlet pipe and the floating ball are integrally injection-molded; a water inlet hole is formed in the water inlet pipe close to the floating ball; the water inlet hole is located below the liquid level of the rainwater storage tank. The device has the beneficial effects that 1, due to the arrangement of the water inlet hole, the water inlet flow area of the water inlet pipe is reduced, so that the flow entering the slow-release box body is reduced, and the flow speed and flow of drainage of the slow-release box body are indirectly reduced; 2, the water inlet hole is located below the liquid level, so that the flow of water entering the water inlet pipe is kept uniform, and the water discharge amount of the slow release box body is also kept uniform; and 3, the water inlet pipe and the floating ball adopt an integral injection molding process, so that a sealing gap between a traditional hose and the floating ball is eliminated, and a water inlet channel is realized only through a preset water inlet hole.

Description

A non-powered slow-release device for sponge cities Technical Field

[0001] This utility model relates to the field of sponge city technology, and in particular to the release of stored rainwater, specifically a non-powered slow-release device for sponge cities. Background Technology

[0002] A sponge city refers to a city that can act like a sponge, absorbing, storing, infiltrating, and purifying rainwater when it rains, and releasing and utilizing the stored water when needed. To maintain stable water levels, the stored rainwater needs to be released evenly and slowly.

[0003] To address this, Chinese patent CN107100253A discloses a non-powered slow-release device and a regulating and purifying device incorporating the slow-release device. The device includes a slow-release tank with a flexible hose connected to its inlet. A float is connected to the other end of the hose. The other end of the hose floats to the surface of the liquid under the influence of the float. Rainwater from the surface of the rainwater storage tank enters the slow-release tank through the hose and is finally released from the outlet at the bottom of the tank.

[0004] Because the hose has a large diameter and a large inlet flow rate, the slow-release tank releases a large amount of rainwater at a fast flow rate, resulting in uneven flow. Summary of the Invention

[0005] To address the technical problems in the background art, this utility model discloses a non-powered slow-release device for sponge cities.

[0006] This utility model provides a non-powered slow-release device for sponge cities, including a slow-release box, a water inlet hole provided on the side wall of the slow-release box, one end of the water inlet pipe connected to the water inlet hole, and a float connected to the other end of the water inlet pipe; a drain hole is provided at the lower end of the slow-release box, and the water inlet pipe and the float are integrally injection molded.

[0007] A water inlet hole is provided near the float ball on the water inlet pipe;

[0008] The water inlet is located below the liquid level in the rainwater storage tank.

[0009] The beneficial effects of the above settings are: 1. The setting of the water inlet hole reduces the water inlet flow area of ​​the water inlet pipe, thereby reducing the flow rate entering the slow release tank and indirectly reducing the flow rate and flow of the slow release tank's drainage; 2. The water inlet hole is located below the liquid surface, which keeps the water flow rate entering the water inlet pipe uniform and also keeps the drainage volume of the slow release tank uniform; 3. The water inlet pipe and float are made into one piece by injection molding, eliminating the sealing gap of the traditional hose and float connection, ensuring that the water inlet channel is only achieved through the preset water inlet hole.

[0010] The water inlet pipe and float are integrally molded, which has many shape features, resulting in high manufacturing costs. Moreover, the water inlet pipe is relatively soft and prone to deformation, which can cause changes in the shape of the water inlet hole and alter the flow area of ​​the water inlet hole. Based on this, a further improvement is made by connecting the water inlet pipe and float ball with a rigid connector; the water inlet hole is located on the side wall of the connector.

[0011] The specific structure of the connector is as follows: it includes a main body; one end of the main body is provided with a screw, which is threadedly connected to the float; the other end of the main body is provided with a tower-shaped connector that is inserted into the other end of the water inlet pipe; the water inlet hole is located on the side wall of the main body and communicates with the inner cavity of the main body, as well as with the tower-shaped connector.

[0012] Furthermore, the slow-release tank is equipped with a hinged flow-limiting ball, which blocks the upper end of the drain hole when not under buoyancy. When the water volume in the slow-release tank increases, causing the flow-limiting ball to float upwards due to buoyancy, the inner cavity of the slow-release tank connects with the drain hole to drain water. Moreover, as the water volume in the slow-release tank continues to increase, the floating height of the flow-limiting ball also increases, and the flow area of ​​the flow channel between the inner cavity of the slow-release tank and the drain hole also increases, thus keeping the water volume in the slow-release tank stable.

[0013] The inlet pipe and the flow-limiting ball are generally installed on the slow-release box with their own independent structures, which are relatively complex and have high manufacturing costs. Based on this, the further improvement is as follows: This utility model also includes a connecting frame set in the slow-release box; the flow-limiting ball is hinged to the connecting frame; the connecting frame is connected to a threaded sleeve that passes through the water inlet hole; the locking nut located on the outside of the slow-release box is threadedly connected to the threaded sleeve to realize the connection and fixation of the connecting frame; one end of the inlet pipe is threadedly connected to the threaded sleeve.

[0014] To prevent leakage at the water inlet of the slow-release tank, a further design feature is that sealing rings are installed between the locking nut and the outer wall of the slow-release tank, and between the connecting frame and the inner wall of the slow-release tank.

[0015] The specific connection structure between the water inlet pipe and the screw sleeve is as follows: one end of the water inlet pipe is provided with a sealing ring that protrudes radially outward; a connecting nut is also fitted onto the water inlet pipe; the end of the connecting nut away from the slow-release box is provided with an inwardly protruding pressure ring for engaging the sealing ring; the connecting nut and the screw sleeve are threaded together. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 is a structural schematic diagram of Embodiment 1 of this utility model;

[0018] Figure 2 is an enlarged view of point A in Figure 1;

[0019] Figure 3 is a front sectional view of Embodiment 1 of this utility model;

[0020] Figure 4 is an enlarged view of point B in Figure 3;

[0021] Figure 5 is an enlarged view of point C in Figure 3;

[0022] Figure 6 is a front view of the connection structure between the float and the inlet pipe in Embodiment 2 of this utility model, with a partial cross-section.

[0023] Figure 7 is a schematic diagram of the connector structure;

[0024] In the diagram: 1. Slow-release tank; 2. Inlet pipe; 3. Float; 4. Inlet hole; 5. Connector; 6. Flow limiting ball; 7. Connecting frame; 8. Locking nut; 9. Sealing ring; 10. Connecting nut; 11. Pressure ring; 12. Washer; 13. Baffle; 14. Flow channel; 21. Sealing ring; 51. Main body; 52. Screw; 53. Tower-shaped connecting pipe; 71. Screw sleeve; 101. Inlet hole; 102. Drain hole; Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0026] Example 1:

[0027] As shown in Figures 1-5, this utility model discloses a non-powered slow-release device for sponge cities, including a slow-release box 1. A water inlet 101 is provided on the side wall of the slow-release box 1. One end of a water inlet pipe 2 is connected to the water inlet 101, and the other end of the water inlet pipe 2 is connected to a float 3. A drain hole 102 is provided at the lower end of the slow-release box 1, which is connected to an external water body through a pipe. Water inside the slow-release box 1 is discharged out through the drain hole 102 to replenish the external water body. An air vent is provided at or near the top of the slow-release box 1 to maintain stable air pressure inside the slow-release box 1, making drainage smoother.

[0028] The inlet pipe 2 and the float ball 3 are integrally injection molded, eliminating the sealing gap between the traditional hose and the float ball 3, ensuring that the water inlet channel is only achieved through the preset inlet hole 4.

[0029] Four evenly distributed circumferential water inlet holes 4 are provided on the water inlet pipe 2 near the float 3; the water inlet holes 4 are located below the liquid level of the rainwater storage tank. The placement of the water inlet holes 4 reduces the water flow area of ​​the water inlet pipe 2, thereby reducing the flow rate entering the slow-release tank 1, and indirectly reducing the flow rate and velocity of the drainage from the slow-release tank 1. Moreover, the fact that the water inlet holes 4 are located below the liquid surface ensures that the water flow rate entering the water inlet pipe 2 remains uniform, and also ensures that the drainage volume of the slow-release tank 1 remains uniform.

[0030] The slow-release tank 1 is also equipped with a hinged flow-limiting ball 6, which blocks the upper end of the drain hole 102 when not under buoyancy. When the water volume in the slow-release tank 1 increases, causing the flow-limiting ball 6 to float upwards under buoyancy, the inner cavity of the slow-release tank 1 connects with the drain hole 102 to drain water. Moreover, as the water volume in the slow-release tank 1 continues to increase, the floating height of the flow-limiting ball 6 also increases, and the flow area of ​​the flow channel between the inner cavity of the slow-release tank 1 and the drain hole 102 also increases, thus keeping the water volume in the slow-release tank 1 stable. The lower end of the flow-limiting ball 6 is curved downwards, which allows the flow-limiting ball 6 to float stably under buoyancy.

[0031] The specific installation structure of the flow-limiting ball 6 is as follows: a connecting frame 7 is provided inside the slow-release box 1. The inner end of the connecting frame 7 is hinged to one end of the hinge plate, and the other end of the hinge plate is fixedly connected to the flow-limiting ball 6.

[0032] At the other end of the hinge plate, the connecting frame 7 is also equipped with a horizontally arranged, integrally formed threaded sleeve 71. The threaded sleeve 71 passes through the water inlet hole 101 and extends to the outside of the slow-release tank 1. The locking nut 8 located outside the slow-release tank 1 is threadedly connected to and locked with the threaded sleeve 71, thereby fixing the connecting frame 7 in place. Sealing rings 9 are provided between the locking nut 8 and the outer wall of the slow-release tank 1, and between the connecting frame 7 and the inner wall of the slow-release tank 1, to maintain a seal at the water inlet hole 101 and prevent leakage.

[0033] A washer 12 with a threaded sleeve 71 is also provided between the locking nut 8 and the adjacent sealing ring 9. With this arrangement, the locking nut 8 will not scratch the sealing ring 9 when it is turned, so as not to damage or fail the sealing ring 9.

[0034] One end of the water inlet pipe 2 is threadedly connected to the screw sleeve 71. The specific connection structure is as follows: one end of the water inlet pipe 2 is provided with a sealing ring 21 that protrudes outward radially; a connecting nut 10 is also sleeved on the water inlet pipe 2; the end of the connecting nut 10 away from the slow-release box 1 is provided with an inwardly protruding pressure ring 11 for locking the sealing ring 21; the connecting nut 10 is threadedly connected to the screw sleeve 71.

[0035] The above configuration, which mounts the water inlet pipe 2 on the connecting frame 7, not only simplifies the structure but also reduces manufacturing costs compared to mounting the water inlet pipe 2 and the flow-limiting ball 6 on the slow-release box 1 through an independent structure.

[0036] The connecting frame 7 is also provided with a downwardly extending baffle 13. The baffle 13 and the inner wall of the adjacent slow-release box 1 form a downwardly extending flow channel 14. The water entering the slow-release box 1 will flow downward along the flow channel 14 under the blocking effect of the baffle 13, thereby preventing the water from directly hitting the top of the flow-limiting ball 6 and forming downward pressure on the flow-limiting ball 6, making it difficult for the flow-limiting ball 6 to float.

[0037] Example 2:

[0038] Compared to Embodiment 1, the difference is as follows: as shown in Figure 6, the inlet pipe 2 and the float 3 are connected by a rigid connector 5 to simplify the integral molding structure of the inlet pipe 2 and the float 3, thereby reducing manufacturing costs. The connector 5 is made of hard plastic.

[0039] As shown in Figure 7, the connector 5 includes a main body 51; one end of the main body 51 is provided with a screw 52, ​​which is threadedly connected to the float 3; the other end of the main body 51 is provided with a tower-shaped connecting pipe 53 that is inserted into the other end of the water inlet pipe 2. The tower-shaped connecting pipe 53 is interference-fitted with the water inlet pipe 2 to achieve a seal. The water inlet hole 4 is provided on the side wall of the main body 51 and communicates with the inner cavity of the main body 51, as well as with the tower-shaped connecting pipe 53.

[0040] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A non-powered slow-release device for sponge cities, comprising a slow-release housing (1), wherein a water inlet (101) is provided on the side wall of the slow-release housing (1), one end of a water inlet pipe (2) is connected to the water inlet (101), and the other end of the water inlet pipe (2) is connected to a float (3); a drain hole (102) is provided at the lower end of the slow-release housing (1), characterized in that: The water inlet pipe (2) and the float (3) are integrally injection molded; the water inlet pipe (2) is provided with a water inlet hole (4) near the float (3); the water inlet hole (4) is located below the liquid level of the rainwater storage tank.

2. The non-powered slow-release device for sponge cities according to claim 1, characterized in that: The water inlet pipe (2) and the float (3) are connected by a rigid connector (5); the water inlet hole (4) is located on the side wall of the connector (5).

3. A non-powered slow-release device for sponge cities according to claim 2, characterized in that: The connector (5) includes a main body (51); one end of the main body (51) is provided with a screw (52) which is threadedly connected to the float (3); the other end of the main body (51) is provided with a tower-shaped connector (53) which is inserted into the other end of the water inlet pipe (2); the water inlet hole (4) is provided on the side wall of the main body (51) and communicates with the inner cavity of the main body (51) and also communicates with the tower-shaped connector (53).

4. The non-powered slow-release device for sponge cities according to claim 1, characterized in that: The slow-release box (1) is also equipped with a hinged flow-limiting ball (6), which is sealed at the upper end of the drain hole (102) without the action of buoyancy.

5. A non-powered slow-release device for sponge cities according to claim 4, characterized in that: It also includes a connecting frame (7) disposed inside the slow-release box (1); the flow-limiting ball (6) is hinged to the connecting frame (7); the connecting frame (7) is connected to a threaded sleeve (71) passing through the water inlet hole (4); the locking nut (8) located outside the slow-release box (1) is threadedly connected to the threaded sleeve (71) to realize the connection and fixation of the connecting frame (7); one end of the water inlet pipe (2) is threadedly connected to the threaded sleeve (71).

6. A non-powered slow-release device for sponge cities according to claim 5, characterized in that: A sealing ring (9) is provided between the locking nut (8) and the outer wall of the slow-release box (1), and between the connecting frame (7) and the inner wall of the slow-release box (1).

7. A non-powered slow-release device for sponge cities according to claim 5, characterized in that: One end of the water inlet pipe (2) is provided with a sealing ring (21) that protrudes radially outward; a connecting nut (10) is also fitted onto the water inlet pipe (2); the end of the connecting nut (10) away from the slow-release box (1) is provided with an inwardly protruding pressure ring (11) for engaging the sealing ring (21); the connecting nut (10) is threadedly connected to the threaded sleeve (71).

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