A sponge city rainwater collection device

Abstract

The present invention relates to a rainwater collection device for a sponge city, comprising an outer cylinder, an upper end surface of the outer cylinder is provided with a water inlet, an inner edge surface of the water inlet is fixed with a tube sheet, an inner side of the tube sheet is provided with an inner cylinder with an axis vertically placed, an outer edge surface of the inner cylinder is provided with a sleeve which can move up and down, an annular filter plate is fixed on the upper end of the sleeve, a drainage outlet is provided on the upper end of the outer edge surface of the inner cylinder, the drainage outlet can be blocked when the sleeve is located at the uppermost end, an annular water baffle is fixed on the lower end of the sleeve, and a circle of annular plates is fixed on the outer side of the water baffle on the inner edge surface of the outer cylinder; the present invention controls the amount of rainfall passing through the interval between the water baffle and the annular plate through the water baffle, so that rainwater with a large sediment content in the first half of the rainfall weather can preferentially enter the water storage tank on the lower side through the interval between the water baffle and the annular plate for collection and sedimentation, and rainwater with a small sediment content can be gradually blocked by the water baffle so as to be discharged into the municipal pipeline through the drainage outlet, thereby greatly reducing the risk of municipal pipeline blockage.

Description

Technical Field

[0001] The invention relates to the field of rainwater collection in sponge cities, and in particular to a rainwater collection device in sponge cities. Background Art

[0002] Sponge city is a new generation of urban stormwater management concept, which means that the city can adapt to environmental changes and deal with natural disasters caused by rainwater like a sponge. In order to improve the city's ability to accommodate and reuse rainwater, rainwater collection devices are installed in urban roads or bridge drainage facilities. However, most of the existing rainwater collection devices have simple structures and do not have the function of rainwater diversion. They are prone to siltation and are difficult to clean up later.

[0003] Announcement No. CN114059644A discloses a flood-proof rainwater collection and reuse system that can clean the bottom silt. By setting a diversion mechanism, different drainage pipes are switched according to the amount of rainfall, and the sliding plate is driven by the buoyancy block to open the sewer pipe so that the silt can be discharged to avoid the problem of silt accumulation. However, this scheme has the following defects: 1. The device as a whole adopts a large number of electronic control components and precise matching. Since its application environment is mostly outdoors and underground, the environment is humid and prone to vibration, which seriously affects the matching and service life of its parts. In addition to greatly increasing the production cost, it lacks practicality; 2. The silt discharge and cleaning method adopted by this device is passive. The discharge port can only be opened by moving the buoyancy block to allow the silt to be discharged by itself. The removal efficiency is low and it is not easy to drain cleanly, which easily causes the discharge port to be blocked by silt and cannot be closed again. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention adopts a sponge city rainwater collection device to solve the problems of complex structure of rainwater collection devices and difficulty in efficient cleaning of sludge in the prior art.

[0005] The technical solution is a sponge city rainwater collection device, comprising a cylindrical outer cylinder with an axis vertically placed, a water inlet opened on the upper end face of the outer cylinder, a tube sheet fixed on the inner edge face of the water inlet, an inner cylinder with an axis vertically placed is arranged on the inner side of the tube sheet, a sleeve which can move up and down is mounted on the outer edge face of the inner cylinder, an annular filter plate is fixed on the upper end of the sleeve, the outer edge face of the annular filter plate is always in contact with the inner edge face of the tube sheet when the sleeve moves up and down, a drainage port penetrating the inner and outer end faces is opened on the upper end of the outer edge face of the inner cylinder, the drainage port can be blocked when the sleeve is at the uppermost end, an annular water baffle is fixed on the lower end of the sleeve, a circle of annular plates is fixed on the inner edge face of the outer cylinder and located outside the water baffle, the inner diameter of the annular plates gradually decreases from top to bottom, and the inner diameter of the lowermost end of the annular plates is larger than the outer diameter of the water baffle;

[0006] A water storage tank is arranged at the lower end of the outer cylinder body, the upper end of the water storage tank is connected with the lower end of the outer cylinder body, a sewage outlet is opened at the lower end of the water storage tank, a baffle is hinged on the sewage outlet, the baffle is always subjected to the force of upward swinging along the hinge axis to block the sewage outlet, when the water storage amount in the water storage tank reaches a certain volume, the baffle can continuously open the sewage outlet for a period of time and then close again.

[0007] A boss is fixed at the lower end of the outer edge of the inner cylinder, and a compression spring is arranged between the boss and the water baffle plate, and the compression spring always gives the water baffle plate an upward thrust.

[0008] The left end of the baffle is hinged to the left end of the sewage outlet, and a weight is fixed to the left side of the hinge shaft at the left end of the baffle. The weight makes the right side of the baffle always receive an upward force to close the sewage outlet.

[0009] The part of the upper end surface of the baffle plate located inside the sewage outlet is provided with a slide groove in the left and right directions, and a slider that can slide left and right is arranged in the slide groove. The slider has a certain gravity. When the baffle plate opens the sewage outlet, the slider can slide to the right, and when the baffle plate closes the sewage outlet, the slider can be reset to the left.

[0010] The lower end face of the sewage outlet is a slope that is lower on the left and higher on the right. When the baffle closes the sewage outlet, it is inclined with lower on the left and higher on the right. Threading rings are fixed on the left and right sides of the slide respectively, and a pull rope is fixed on the left and right ends of the slider respectively. The right pull rope is fixedly connected to the inner edge surface of the sewage outlet after passing through the right threading ring, and the left pull rope is fixedly connected to the water baffle plate upward after passing through the left threading ring. When the baffle closes the sewage outlet, the slider is placed at the leftmost end of the slide under the action of its own gravity. At this time, both pull ropes are in a straightened state. When the baffle opens the sewage outlet, the slider can be pulled by the right pull rope and slide to the right along the slide. At the same time, the slider pulls the water baffle plate downward through the left pull rope, so that the upper end face of the water baffle plate is lower than the lower end face of the annular plate, and the upper end face of the annular filter plate is lower than the lower end face of the tube plate.

[0011] In order to enable the sediment at the bottom of the water tank to be quickly removed when the slide moves, the sewage outlet is a rectangular outlet, and a scraper placed vertically front and back is fixed on the slider. The front and back length of the scraper is smaller than the front and back width of the sewage outlet. When the baffle closes the sewage outlet, the scraper can be placed on the inside of the sewage outlet.

[0012] A filter screen is arranged inside the drain outlet.

[0013] The lower end surface of the drain port is not lower than the lower end surface of the tube sheet.

[0014] A horizontal transverse tube is fixed at the lower end of the inner cylinder, and the transverse tube penetrates the outer cylinder and is fixedly connected to the outer cylinder.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. The present invention uses rainwater gravity instead of electric control components as a power source, which greatly improves the overall practicality of the device and reduces production and use costs;

[0017] 2. The water retaining plate is used to control the amount of rain that passes through the gap between the water retaining plate and the annular plate, so that the rainwater with high sediment content in the first half of the rainy weather can first pass through the gap between the water retaining plate and the annular plate to enter the water storage tank on the lower side for collection and sedimentation. The subsequent rainwater with low sediment content can be gradually blocked by the water retaining plate and discharged into the municipal pipeline through the drainage port, greatly reducing the risk of blockage of the municipal pipeline;

[0018] 3. The baffle is closed by the gravity of the weight. When the water storage in the water tank reaches the critical value, the weight of the weight can be overcome to open the sewage outlet, so that the sediment in the lower layer of the water tank can be discharged, thereby improving the cleanliness of the rainwater in the water tank and facilitating subsequent secondary utilization;

[0019] 4. The switch of the sewage outlet is controlled by a weight, and the slider is used to change the force arm of the baffle to extend the opening time of the baffle, so that the sewage outlet is automatically opened for a certain period of time after the water output in the water tank meets a certain gravity, so that all the sediment at the bottom of the water tank is discharged, thereby improving the water quality in the water tank, facilitating subsequent water extraction and use, and reducing the difficulty of subsequent cleaning of the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the front view of the present invention.

[0021] Figure 2 It is a front cross-sectional view of the present invention.

[0022] Figure 3 For the present invention Figure 2 A is an enlarged view of the middle image.

[0023] Figure 4 This is a front cross-sectional view of the water retaining plate of the present invention after it moves downward.

[0024] Figure 5 It is a front cross-sectional view of the baffle of the present invention after it is opened downward.

[0025] Figure 6 It is a front cross-sectional view of the outer cylinder and the water storage tank of the present invention.

[0026] Figure 7 It is a stereoscopic view of the sleeve, the annular filter plate and the water retaining plate of the present invention. DETAILED DESCRIPTION

[0027] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0028] Depend on Figures 1 to 7The present invention comprises a cylindrical outer cylinder 1 with an axis vertically placed, a water inlet 2 is provided on the upper end face of the outer cylinder 1, a tube sheet 3 is fixed on the inner edge face of the water inlet 2, an inner cylinder 4 with an axis vertically placed is arranged on the inner side of the tube sheet 3, a sleeve 5 which can move up and down is mounted on the outer edge face of the inner cylinder 4, an annular filter plate 6 is fixed on the upper end of the sleeve 5, the outer edge face of the annular filter plate 6 is always in contact with the inner edge face of the tube sheet 3 when the sleeve 5 moves up and down, a drainage port 7 which passes through the inner and outer end faces is provided on the upper end of the outer edge face of the inner cylinder 4, the drainage port 7 can be blocked when the sleeve 5 is at the uppermost end, an annular water baffle 8 is fixed on the lower end of the sleeve 5, a circle of annular plates 9 is fixed on the inner edge face of the outer cylinder 1 and located outside the water baffle 8, the inner diameter of the annular plates 9 gradually decreases from top to bottom, and the inner diameter of the lowermost end of the annular plates 9 is larger than the outer diameter of the water baffle 8;

[0029] A water tank 10 is provided at the lower end of the outer cylinder 1, and the upper end of the water tank 10 is connected to the lower end of the outer cylinder 1. A sewage outlet 11 is opened at the lower end of the water tank 10, and a baffle 12 is hinged on the sewage outlet 11. The baffle 12 is always subjected to the force of upward swinging along the hinge axis to block the sewage outlet 11. When the water storage volume in the water tank 10 reaches a certain volume, the baffle 12 can continuously open the sewage outlet 11 for a period of time and then close it again.

[0030] A boss is fixed at the lower end of the outer edge of the inner cylinder 4, and a compression spring is arranged between the boss and the water baffle 8, and the compression spring always gives the water baffle 8 an upward thrust.

[0031] The left end of the baffle 12 is hinged to the left end of the sewage outlet 11 , and a weight block 13 is fixed to the left end of the baffle 12 on the left side of the hinge axis. The weight block 13 always exerts an upward force on the right side of the baffle 12 to close the sewage outlet 11 .

[0032] In order to extend the opening time of the baffle 12, a left-right slide groove 14 is provided on the upper end surface of the baffle 12 located on the inner side of the sewage outlet 11. A slider 15 that can slide left and right is provided in the slide groove 14. The slider 15 has a certain gravity. When the baffle 12 opens the sewage outlet 11, the slider 15 can slide to the right, and when the baffle 12 closes the sewage outlet 11, the slider 15 can be reset to the left.

[0033] The lower end surface of the sewage outlet 11 is an inclined surface with a lower left side and a higher right side. When the baffle plate 12 closes the sewage outlet 11, it is inclined with a lower left side and a higher right side. A threading ring 16 is fixed on the left and right sides of the slide 14, and a pull rope 17 is fixed on the left and right ends of the slider 15. The right pull rope 17 is fixedly connected to the inner edge surface of the sewage outlet 11 after passing through the right threading ring 16, and the left pull rope 17 is upwardly fixedly connected to the water baffle 8 after passing through the left threading ring 16. When the baffle plate 12 closes the sewage outlet 11, the slider 15 is placed at the leftmost end of the slide 14 under the action of its own gravity. At this time, the two pull ropes 17 are in a straightened state. When the baffle plate 12 opens the sewage outlet 11, the slider 15 can be pulled by the right pull rope 17 and slide to the right along the slide 14. At the same time, the slider 14 pulls the water baffle 8 downward through the left pull rope 17, so that the upper end surface of the water baffle 8 is lower than the lower end surface of the annular plate 9, and the upper end surface of the annular filter plate 6 is lower than the lower end surface of the tube plate 3.

[0034] The sewage outlet 11 is a rectangular opening, and a scraper 19 placed vertically front and back is fixed on the slider 15. The front and back length of the scraper 19 is smaller than the front and back width of the sewage outlet 11. When the baffle 12 closes the sewage outlet 11, the scraper 19 can be placed inside the sewage outlet 11.

[0035] A filter screen is arranged inside the drain port 7 .

[0036] The lower end surface of the drain port 7 is not lower than the lower end surface of the tube sheet 3 .

[0037] A horizontal transverse tube 18 is fixed to the lower end of the inner cylinder 4 , and the transverse tube 18 passes through the outer cylinder 1 and is fixedly connected to the outer cylinder 1 .

[0038] It is worth mentioning that in order to prevent the water retaining plate 8 from shaking back and forth when working in heavy rainfall weather, the opening area of ​​the water outlet 7 should be set to be no larger than the total opening area of ​​the water inlet 4.

[0039] In order to facilitate sedimentation and collection at the sewage outlet 11, the lower end surface of the water storage tank 10 is a funnel-shaped conical surface.

[0040] When the present invention is used, the outer cylinder 1 and the water storage tank 10 are pre-buried underground, so that the upper end surface of the outer cylinder 1 is flush with the ground, and the horizontal pipe 18 is connected to the municipal drainage pipe. A bag or a material receiving box for receiving garbage and sludge can be arranged below the sewage outlet 11 to facilitate the centralized treatment of garbage and sludge.

[0041] In rainy weather, rainwater enters the cavity of the outer cylinder 1 through the water inlet 2 after being filtered by the annular filter plate 6, and then falls on the water baffle 8 and continues to fall downward through the gap between the water baffle 8 and the annular plate 9 into the water storage tank 10 below, thereby collecting and settling rainwater; when the rainfall duration or rainfall amount gradually increases, the amount of water entering the cavity of the outer cylinder 1 through the water inlet 2 is greater than the amount of water discharged downward through the gap between the water baffle 8 and the annular plate 9, and rainwater gathers above the water baffle 8, causing gravity to increase continuously, and finally overcoming the elastic force of the compression spring to push the water baffle 8, the sleeve 5 and the annular filter plate 6 to move synchronously. After the sleeve 5 moves downward, the drain outlet 7 is exposed. The rainwater that cannot be discharged from the interval between the water retaining plate 8 and the annular plate 9 in time enters the inner cylinder 4 through the drainage port 7, and then is discharged into the municipal drainage pipe through the transverse pipe 18. Since the inner diameter of the annular plate 9 gradually decreases from top to bottom, once the water retaining plate 8 moves downward, before the rainfall decreases, the water retaining plate 8 will not be reset upward; since the rainwater at the initial stage of rain washes away the mud or dust on the municipal road surface and discharges it into the water storage tank 10, the mud and sand content of the rainwater discharged into the municipal pipe through the drainage port 7 is greatly reduced, which greatly reduces the risk of blockage of the municipal pipe. At the same time, the water storage tank 10 can be used to precipitate the rainwater with a large mud and sand content;

[0042] When the rainwater in the water tank 10 accumulates to an amount that can overcome the gravity of the weight 13, the right end of the baffle 12 swings downward along the hinge axis under the action of the gravity of the rainwater, gradually opening the sewage outlet. At the same time, the slider 15 slides to the right along the slide 14 under the pulling action of the right pull rope 17, and the slider 15 drives the scraper 19 to move to the right synchronously, and the silt and garbage sediments settled at the sewage outlet 11 are all scraped out of the sewage outlet 11 to the right. At the same time, the slider 15 overcomes the elastic force of the compression spring by the left pull rope 17 to pull the water baffle 8 downward, so that the upper end surface of the water baffle 8 is lower than the lower end surface of the annular plate 9, and the upper end surface of the annular filter plate 6 is lower than the lower end surface of the tube plate 3, as shown in the attached figure. Figure 5 As shown, the large particles of garbage deposited on the upper sides of the annular filter plate 6 and the water retaining plate 8 can be discharged downward into the water storage tank 10 under the scouring effect of rainwater, and the left pull rope 17 can be released after the slider 15 is reset to the left, so that the annular filter plate 6 is reset upward to the inner side of the tube plate 3 to continue filtering rainwater, and the water retaining plate 8 is reset upward to the inner side of the annular plate 6 to continue retaining water;

[0043] The weight 13 will drive the baffle 12 to swing upward along the hinge axis to close the sewage outlet 11. Since the lower end surface of the sewage outlet 11 is a slope with a lower left and a higher right, the baffle 12 is also in a state of lower left and higher right after it is reset, and the slider 15 above it can be reset to the left side of the slide 14 under the action of its own gravity.

[0044] The present invention utilizes rainwater gravity instead of electric control elements as a power source, greatly improving the overall practicality of the device and reducing production and use costs. The water baffle 8 is used to control the amount of rainfall passing through the water baffle 8 and the annular plate 9, so that rainwater with a large sediment content in the first half of the rainy weather can preferentially pass through the water baffle 8 and the annular plate 9 to enter the water storage tank on the lower side for collection and sedimentation, and subsequent rainwater with a small sediment content can be gradually blocked by the water baffle 8 and discharged into the municipal pipeline through the drain port 7, greatly reducing the risk of municipal pipeline blockage; the switch of the sewage outlet 11 is controlled by the weight block 13, and the lever arm of the baffle 12 is changed by the slider 15 to extend the opening time of the baffle 12, so that the sewage outlet 11 is automatically opened for a certain time after the water output in the water storage tank 10 meets a certain gravity, so that all the sediment at the bottom of the water storage tank 10 is discharged, the water storage quality in the water storage tank 10 is improved, and subsequent water extraction and use are convenient while reducing the difficulty of subsequent cleaning of the water storage tank.

Claims

1. A sponge city rainwater collection device, comprising a cylindrical outer cylinder (1) with an axis placed vertically, characterized in that: The upper end surface of the outer cylinder (1) is provided with a water inlet (2), the inner edge surface of the water inlet (2) is fixed with a tube sheet (3), the inner side of the tube sheet (3) is provided with an inner cylinder (4) whose axis is placed vertically, the outer edge surface of the inner cylinder (4) is sleeved with a sleeve (5) that can move up and down, the upper end of the sleeve (5) is fixed with an annular filter plate (6), when the sleeve (5) moves up and down, the outer edge surface of the annular filter plate (6) is always in contact with the inner edge surface of the tube sheet (3), the upper end of the outer edge surface of the inner cylinder (4) is provided with a drainage port (7) that passes through the inner and outer end surfaces, the sleeve (5) can block the drainage port (7) when it is at the uppermost end, the lower end of the sleeve (5) is fixed with an annular water baffle (8), the inner edge surface of the outer cylinder (1) is fixed with a circle of annular plates (9) located outside the water baffle (8), the inner diameter of the annular plates (9) gradually decreases from top to bottom, and the inner diameter of the lowermost end of the annular plates (9) is larger than the outer diameter of the water baffle (8); A water storage tank (10) is disposed at the lower end of the outer cylinder (1), the upper end of the water storage tank (10) is connected to the lower end of the outer cylinder (1), a sewage outlet (11) is provided at the lower end of the water storage tank (10), a baffle (12) is hingedly connected to the sewage outlet (11), the baffle (12) is always subjected to a force swinging upward along the hinge axis to block the sewage outlet (11), and when the water storage volume in the water storage tank (10) reaches a certain volume, the baffle (12) can continue to open the sewage outlet (11) for a period of time and then close it again; The upper end surface of the baffle (12) located inside the sewage outlet (11) is provided with a slide groove (14) in the left and right directions, and a slider (15) capable of sliding left and right is arranged in the slide groove (14). The slider (15) has a certain gravity. When the baffle (12) opens the sewage outlet (11), the slider (15) can slide to the right, and when the baffle (12) closes the sewage outlet (11), the slider (15) can return to the left. The lower end surface of the sewage outlet (11) is an inclined surface with a lower left side and a higher right side. When the baffle plate (12) closes the sewage outlet (11), the lower left side is inclined with a higher right side. A threading ring (16) is fixed to the left and right sides of the slide groove (14). A pull rope (17) is fixed to the left and right ends of the slider (15). The right pull rope (17) is fixedly connected to the inner edge surface of the sewage outlet (11) after passing through the right threading ring (16). The left pull rope (17) is fixedly connected to the water baffle plate (8) after passing through the left threading ring (16). When the baffle plate (12) closes the sewage outlet (11), the lower end surface of the sewage outlet (11) is inclined with a lower left side and a higher right side. When the sewage outlet (111) is opened, the slider (15) is placed at the leftmost end of the slide groove (14) under the action of its own weight. At this time, the two pull ropes (17) are in a straightened state. When the baffle plate (12) opens the sewage outlet (11), the slider (15) can be pulled by the right pull rope (17) and slide to the right along the slide groove (14). At the same time, the slider pulls the water baffle plate (8) downward through the left pull rope (17), so that the upper end surface of the water baffle plate (8) is lower than the lower end surface of the annular plate (9), and the upper end surface of the annular filter plate (6) is lower than the lower end surface of the tube plate (3).

2. A sponge city rainwater collection device according to claim 1, characterized in that: A boss is fixed at the lower end of the outer edge surface of the inner cylinder (4), and a compression spring is arranged between the boss and the water baffle (8), so that the compression spring always gives the water baffle (8) an upward thrust.

3. A sponge city rainwater collection device according to claim 1, characterized in that: The left end of the baffle (12) is hinged to the left end of the sewage outlet (11), and a weight block (13) is fixed to the left end of the baffle (12) on the left side of the hinge axis. The weight block (13) causes the right side of the baffle (12) to always be subjected to an upward force to close the sewage outlet (11).

4. A sponge city rainwater collection device according to claim 1, characterized in that: The sewage outlet (11) is a rectangular opening, and a scraper (19) is fixed on the slider (15) and is placed vertically in the front and rear directions. The front and rear length of the scraper (19) is smaller than the front and rear width of the sewage outlet (11). When the baffle (12) closes the sewage outlet (11), the scraper (19) can be placed inside the sewage outlet (11).

5. The sponge city rainwater collection device according to claim 1, characterized in that: A filter screen is arranged inside the drainage port (7).

6. A sponge city rainwater collection device according to claim 1, characterized in that: The lower end surface of the drain port (7) is not lower than the lower end surface of the tube plate (3).

7. The sponge city rainwater collection device according to claim 1, characterized in that: A horizontal transverse tube (18) is fixed to the lower end of the inner cylinder (4), and the transverse tube (18) penetrates the outer cylinder (1) and is fixedly connected to the outer cylinder (1).

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