CN218061076U - Roof rainwater preliminary treatment device - Google Patents

Abstract

The utility model discloses a roofing rainwater preliminary treatment device, include: the water tank is internally provided with a cavity, and the cavity is provided with an obliquely arranged bottom surface; the water filtering pipe is obliquely arranged, a rainwater inlet for rainwater to enter is formed in the higher end of the water filtering pipe, and a rainwater overflow port for rainwater to flow out is formed in the lower end of the water filtering pipe; a plurality of water filtering holes are arranged on the pipe body of the water filtering pipe and are positioned in the cavity of the water tank; one end of the flow abandoning drain pipe is communicated with the low end of the cavity in the water tank, and the flow abandoning drain pipe is provided with a buoyancy stop component; the enclosing and shielding area is enclosed by the partition plate to form a high-position end in the cavity, and the lower part of the partition plate is provided with an opening; and one end of the water outlet pipe is communicated with the surrounding and shielding area, and the other end of the water outlet pipe is positioned outside the water tank. The rainwater can be subjected to primary treatment, the initial rainwater is discarded, and large, medium and small particles, scum and other substances in the rainwater are removed.

Description

Roof rainwater preliminary treatment device

Technical Field

The utility model relates to a roofing rainwater preliminary treatment technical field especially relates to a roofing rainwater preliminary treatment device.

Background

A sponge city is characterized in that water is absorbed, stored, seeped and purified when raining through certain technical measures, and the stored rainwater is released and utilized when needed, so that the urban flood disaster is reduced, and rainwater resources are effectively utilized. CN201620103362.8 discloses a rainwater hopper special for roof rainwater regulation, the outlet flow of which can be adjusted as required, and the water storage height can be adjusted as required, so that the rainwater hopper has wide applicability, is suitable for rainwater treatment equipment with different load capacities, is suitable for flat roofs, gutter roofs, building slope finding roofs, roofs with structure slope finding less than 5%, and areas with different rainstorm intensity. CN201610072841.2 discloses a spiral vertical flow sedimentation tank and a rainwater and car washing water treatment system using the sedimentation tank. The rainwater treatment system disclosed by the invention adopts the spiral vertical flow sedimentation tank, is small in size, simple in equipment operation and maintenance and low in manufacturing cost, can meet the treatment requirements of rainwater and car washing water, can be buried outdoors and also can be arranged in a useless space of a basement, and is very low in construction and operation cost.

However, the rainwater hopper special for regulating and storing rainwater on the roof mainly has the function of regulating the water flow entering the spiral vertical flow sedimentation tank processor, and the spiral vertical flow sedimentation tank processor mainly has the function of removing small suspended particles and colloid in rainwater through coagulating sedimentation. If rainwater directly enters the spiral vertical flow sedimentation tank processor from a rainwater hopper special for roof rainwater storage, large, medium and small particles, scum and other substances in the rainwater are difficult to process.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a roofing rainwater preliminary treatment device can solve one of above-mentioned problem to a certain extent at least.

The technical scheme of the utility model is realized like this:

a primary roof rainwater treatment device comprises:

the water tank is internally provided with a cavity, the higher end of the bottom surface of the cavity is a high-level end, and the lower end of the bottom surface of the cavity is a low-level end;

the water filtering pipe is obliquely arranged, and a rainwater inlet for rainwater to enter is formed in the higher end of the water filtering pipe; a plurality of water filtering holes are formed in the pipe body of the water filtering pipe and are positioned in the cavity of the water tank;

one end of the flow abandoning drain pipe is communicated with the low end of the cavity in the water tank, and the flow abandoning drain pipe is provided with a buoyancy stop component;

the shielding region is formed at the high-position end in the cavity in a surrounding mode through a partition plate, and an opening is formed in the lower portion of the partition plate;

and one end of the water outlet pipe is communicated with the enclosure area, and the other end of the water outlet pipe is positioned outside the water tank.

Furthermore, an expansion section with smaller diameter at two ends and larger diameter in the middle is arranged in the flow abandoning water discharge pipe; the buoyancy stop assembly comprises a floating ball, a piston ball and a connecting piece for connecting the floating ball and the piston ball, the floating ball is positioned outside the flow abandoning drainage pipe and in a cavity of the water tank, the piston ball is arranged in the flaring section, and the floating ball drives the piston ball to block a port of the flaring section, which is close to the cavity, under the drive of buoyancy.

Furthermore, a crown structure is arranged at the port of the flow abandoning drain pipe connected with the cavity, so that when the floating ball is pressed at the port of the flow abandoning drain pipe, a gap for rainwater to enter the flow abandoning drain pipe is arranged between the floating ball and the flow abandoning drain pipe.

Furthermore, an overflow port is arranged at the lower end of the water filtering pipe fitting and is positioned outside the water tank.

Furthermore, the water filtering pipe fitting is formed by splicing a plurality of sections of pipe fittings.

Furthermore, a waste discharge port capable of controlling the switch is arranged at the low-level end in the water tank.

Further, still include the flocculating agent device of offeing medicine, the flocculating agent device of offeing medicine includes flocculating agent stock solution container and dosing pipe, dosing pipe's one end is connected flocculating agent stock solution container, the other end is located enclose and cover the regional intra-area and be connected with the ball-cock assembly.

Further, the flocculant storage container is arranged at a position higher than the water tank.

Further, the diameter of the water filtering hole is 3mm.

Further, the inclination angle of the bottom surface of the cavity is 5 °.

The beneficial effects of the utility model are that: the rainwater can be subjected to primary treatment, initial rainwater with more pollutants is discarded, and large, medium and small particles, scum and other substances in rainwater are removed, so that the rainwater entering the spiral vertical flow sedimentation tank processor only contains colloid, small suspended matters and soluble substances, the effluent of the spiral vertical flow sedimentation tank processor meets the national standard of urban sewage recycling urban miscellaneous water quality, and the operation and maintenance difficulty of the spiral vertical flow sedimentation tank processor is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic front view of a primary treatment device for roof rainwater of the present invention;

FIG. 2 is a schematic view of the internal structure of the primary treatment device for roof rainwater of the present invention;

FIG. 3 is a schematic top view of the primary treatment device for roof rainwater of the present invention;

FIG. 4 is a schematic left view of the primary treatment device for roof rainwater of the present invention;

FIG. 5 is a right schematic view of the primary treatment device for roof rainwater of the present invention;

FIG. 6 is a schematic structural view of the buoyancy cut-off assembly disposed in the drainage pipe.

In the figure: 1. a water tank; 11. an inner cavity; 2. a water filtering pipe fitting; 21. a rainwater inlet; 22. an overflow port; 3. a flow-discarding drainage pipe; 31. a flared section; 32. a coronal structure; 4. a buoyancy cut-off assembly; 41. a floating ball; 42. a piston ball; 43. a connecting member; 5. an enclosed region; 51. a partition plate; 511. an opening; 6. a water outlet pipe; 7. a flocculant dosing device; 71. a dosing tube; 72. a float valve; 8. a waste discharge port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-6, there is shown a primary treatment device for roof rainwater, comprising a water tank 1, a water filtering pipe 2, a water discarding and draining pipe 3, an enclosed area 5 and a water outlet pipe 6; a cavity is formed in the water tank 1, and the cavity is provided with an arc-surface-shaped bottom surface or an obliquely arranged bottom surface or other non-flat bottom surfaces, so that the higher end of the bottom surface is defined as a high-position end, and the lower end of the bottom surface is defined as a low-position end; in this embodiment, the bottom surface of the cavity is inclined, and the inclination angle is preferably 5 °; the water filtering pipe 2 is obliquely arranged, a rainwater inlet 21 for rainwater to enter is formed in the higher end of the water filtering pipe, and the rainwater inlet 21 can be butted with a roof rainwater regulation and storage special rainwater hopper with the publication number of CN 205531061U; a plurality of water filtering holes are formed in the pipe body of the water filtering pipe 2 and are positioned in the cavity of the water tank 1; one end of the flow abandoning drain pipe 3 is communicated with the low end of the cavity in the water tank 1, the flow abandoning drain pipe 3 is provided with a buoyancy stopping component 4, and the stopping degree of the buoyancy stopping component 4 to the flow abandoning drain pipe 3 is higher under the condition that the buoyancy is larger; the enclosing region 5 is enclosed by a partition plate 51 to form a high-level end in the cavity, and an opening 511 is formed at the lower part of the partition plate 51; one end of the water outlet pipe 6 is communicated with the enclosed area 5, and the other end of the water outlet pipe is positioned outside the water tank 1.

The work flow of the roof rainwater primary treatment device is as follows:

in the first stage, rainwater is collected to a rainwater hopper special for roof rainwater regulation along a roof at the initial stage of rainwater falling, pollutants on the roof are mixed into rainwater and then enter the rainwater hopper special for roof rainwater regulation due to the fact that rainwater can scour the roof to a certain degree in the process, rainwater in the first stage is turbid, and pollutants in the rainwater are more (CODcr =150-1000mg/L and TSS =50-300 mg/L); then, rainwater enters the water filtering pipe 2 from the rainwater inlet 21 and flows downwards along the water filtering pipe, and the rainwater enters the inner cavity 11 of the water tank 1 from the water filtering holes, wherein the diameter of the water filtering holes is preferably 3mm in the embodiment, and impurities (broken stones, gravel, leaves and the like) with the size larger than 3mm can be trapped in the water filtering pipe 2; after entering the water tank 1, the rainwater is collected at the low end in the water tank 1, and because the rainwater amount at this stage is small, the water level does not enable the buoyancy stop component 4 to reach a high stop degree for the drainage pipe 3, and the rainwater at this stage can be drained through the drainage pipe 3;

in the second stage, the amount of rainwater is gradually increased, since most of rainwater which previously scoured the roof is drained from the drainage pipe 3, the rainwater pollution in this stage is low (CODcr =30-50mg/L, TSS =10-50 mg/L), when the water inlet speed is higher than the drainage speed of the drainage pipe 3, the water level in the water tank 1 is gradually increased, and the water level at this time makes the buoyancy cut-off component 4 reach a higher cut-off degree for the drainage pipe 3, and in an extreme state, the drainage pipe 3 is completely cut off, while in this embodiment, the water output of the drainage pipe 3 is preferably reduced to 1/5-1/8 of the maximum water output of the water outlet pipe 6; as the water level in the water tank 1 rises, the water level is higher than the opening 511 at the lower part of the partition plate 51 of the enclosed area 5, and then particles with specific gravity larger than that of water are settled at the lower end of the water tank 1, while particles with specific gravity smaller than that of water float on the water surface, and since the water surface is higher than the opening 511 of the partition plate 51, rainwater can enter the enclosed area 5 from the opening 511, and the floating small particles are blocked outside the enclosed area 5 by the partition plate 51; rainwater in the enclosed area 5 can be led out through the water outlet pipe 6, the water outlet pipe 6 can be provided with a valve control switch, and finally the rainwater led out through the water outlet pipe 6 has high cleanliness and can be led into a spiral vertical flow sedimentation tank processor with the publication number of CN105709465B for treatment;

in the third stage, the amount of rainwater is gradually reduced, the water level in the water tank 1 is gradually reduced, the cut-off degree of the buoyancy cut-off component 4 on the drainage pipe 3 is gradually reduced, substances such as large precipitated particles, small floating particles and the like in the water tank 1 are discharged from the drainage pipe 3 along with rainwater, and the drainage pipe 3 can be connected with an urban rainwater pipeline, so that rainwater with poor water quality is discharged into the urban rainwater pipeline; finally, the rainwater in the water tank 1 is emptied.

In the above embodiment, in the second stage, when the water level of the rainwater rises to the height of the opening 511, a small amount of floating small particles enter the enclosed area 5, and when the water level exceeds the opening 511, the floating small particles cannot enter the enclosed area 5; in this embodiment, therefore, the opening 511 is preferably of a flat configuration, so that the water level can quickly pass over the height of the opening 511.

In some specific embodiments, referring to fig. 2 and 6, the waste water discharge pipe 3 is provided with a flared section 31 with a smaller diameter at two ends and a larger diameter at the middle; the buoyancy stop assembly 4 comprises a floating ball 41, a piston ball 42 and a connecting piece 43 for connecting the floating ball 41 and the piston ball 42, the floating ball 41 is located outside the drainage pipe 3 and in the cavity of the water tank 1, the piston ball 42 is arranged in the flaring section 31, and the floating ball 41 drives the piston ball 42 to block the flaring section 31 close to the port of the cavity under the drive of buoyancy. Wherein, the connecting piece 43 may be a connecting rope or a connecting rod. The buoyancy cut-off component 4 in the embodiment has a simple structure and low manufacturing cost. In addition, in order to avoid that the float ball 41 blocks the port of the drainage pipe 3 under the gravity driving of the piston ball 42, so that even if the water level is low, rainwater cannot be drained from the drainage pipe 3, referring to fig. 6, a crown structure 32 is arranged at the port of the drainage pipe 3 connected with the cavity, so that when the float ball 41 is pressed at the port of the drainage pipe 3, a gap for rainwater to enter the drainage pipe 3 exists between the float ball and the drainage pipe. Wherein, the crown structure 32 is, for example, a plurality of convex teeth arranged along the circumferential direction on the port of the drainage pipe 3, even if the floating ball 41 is stuck on the port of the drainage pipe 3, rainwater can still enter the drainage pipe 3 from the gap between the convex teeth.

In the above embodiment, in an extreme case, when the impurities (crushed stones, gravels, leaves, etc.) in the water filtering pipe 2 need to be cleaned, the water filtering pipe 2 can be removed for cleaning, and then the impurities are reinstalled after cleaning, and preferably, in the embodiment, referring to fig. 2, the lower end of the water filtering pipe 2 is provided with the overflow port 22, and the overflow port 22 is located outside the water tank 1, so that when the amount of rainwater is large enough, the rainwater can flush the impurities trapped in the water filtering pipe 2 towards the overflow port 22, thereby the impurities do not need to be cleaned by removing the water filtering pipe 2, and in addition, when the amount of rainwater is too large, if the water level is higher than the height of the partition plate 51, small floating particles can be caused to overturn the partition plate 51 and enter the enclosure area 5, in the embodiment, when the water level is too high, the rainwater in the water tank 1 can enter the water filtering pipe 2 through the water filtering holes, and the water level in the water tank 1 is ensured not to exceed the height of the partition plate 51, and the water filtering pipe 2 can be manufactured by splicing multiple sections.

In some specific embodiments, in order to further improve the treatment effect of the spiral vertical flow sedimentation basin treatment device connected with the water outlet pipe 6, referring to fig. 2 and 3, the primary treatment device for roof rainwater further comprises a flocculant dosing device 7, wherein the flocculant dosing device 7 comprises a flocculant storage container (not shown) and a dosing pipe 71, one end of the dosing pipe 71 is connected with the flocculant storage container, and the other end of the dosing pipe 71 is arranged in the enclosed area 5 and is connected with a ball float valve 72. In other words, in the second stage, after the water level in the enclosed area 5 reaches a certain level, the float valve 72 opens the dosing pipe 71, so that the rainwater flowing into the water outlet pipe 6 can be dosed with the flocculating agent, and the automatic dosing of the flocculating agent is realized; it is also preferred that the flocculant storage tank is located higher than the tank 1 for reduced manufacturing costs, so that flocculant can flow under gravity into the enclosed area 5 without the need for power means such as pumps.

In some specific embodiments, after the primary roof rainwater treatment device is operated for a period of time, the interior of the primary roof rainwater treatment device is precipitated more and more, and for convenience of cleaning, referring to fig. 3, a waste discharge port 8 capable of controlling a switch is arranged at a low-level end in the water tank 1; in the normal operation state of the roof rainwater primary treatment device, the waste discharge port 8 is in a closed state, and rainwater cannot be discharged from the waste discharge port 8; when the inner cavity 11 of the water tank 1 needs to be cleaned, the waste discharge port 8 can be opened, the inner wall of the inner cavity 11 is cleaned, and water is discharged from the waste discharge port 8.

In the above embodiment, referring to fig. 3, in the present embodiment, the enclosed area 5 is formed by enclosing three partition plates 51 and the inner wall of the water tank 1; and the water outlet pipe 6 can be directly arranged on the outer side wall of the water tank 1, so that the manufacturing is convenient. Of course, the shielding region 5 may also be in other shapes, such as a circle, and may be disposed according to actual requirements.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A roofing rainwater preliminary treatment device, its characterized in that includes:

the water tank is internally provided with a cavity, the higher end of the bottom surface of the cavity is a high-level end, and the lower end of the bottom surface of the cavity is a low-level end;

the water filtering pipe is obliquely arranged, and a rainwater inlet for rainwater to enter is formed in the higher end of the water filtering pipe; a plurality of water filtering holes are formed in the pipe body of the water filtering pipe and are positioned in the cavity of the water tank;

one end of the flow abandoning drain pipe is communicated with the low end of the cavity in the water tank, and the flow abandoning drain pipe is provided with a buoyancy stop component;

the shielding region is formed at the high-position end in the cavity in a surrounding mode through a partition plate, and an opening is formed in the lower portion of the partition plate;

and one end of the water outlet pipe is communicated with the enclosure area, and the other end of the water outlet pipe is positioned outside the water tank.

2. The primary roof rainwater treatment device according to claim 1, wherein a flaring section with smaller diameter at two ends and larger diameter in the middle is arranged in the drainage pipe; the buoyancy stop assembly comprises a floating ball, a piston ball and a connecting piece for connecting the floating ball and the piston ball, the floating ball is positioned outside the flow abandoning drainage pipe and in a cavity of the water tank, the piston ball is arranged in the flaring section, and the floating ball drives the piston ball to block a port of the flaring section, which is close to the cavity, under the drive of buoyancy.

3. The primary roof rainwater treatment device according to claim 2, wherein a crown structure is arranged at the port of the drainage pipe connected with the cavity, so that when the floating ball is pressed on the port of the drainage pipe, a gap for rainwater to enter the drainage pipe is arranged between the drainage pipe and the floating ball.

4. A primary roof rainwater treatment device according to claim 1, wherein the lower end of the strainer pipe is provided with an overflow port, and the overflow port is positioned outside the water tank.

5. A primary roof rainwater treatment device according to claim 1 or 4 and characterised in that the water filtering pipe is formed by splicing a plurality of sections of pipe.

6. A primary roof rainwater treatment device according to claim 1 and further characterised in that a waste discharge port which can be controlled to open and close is arranged at the lower end of the water tank.

7. The primary roof rainwater treatment device according to claim 1, further comprising a flocculant dosing device, wherein the flocculant dosing device comprises a flocculant liquid storage container and a dosing pipe, one end of the dosing pipe is connected with the flocculant liquid storage container, and the other end of the dosing pipe is arranged in the enclosed area and connected with a ball float valve.

8. A primary roof rainwater treatment apparatus according to claim 7 wherein the flocculant storage tank is located higher than the water tank.

9. The primary roof rainwater treatment device according to claim 1, wherein the diameter of the water filtering holes is 3mm.

10. A primary roof rainwater treatment unit according to claim 1 characterised in that the floor of the cavity is inclined at an angle of 5 °.

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