A flow dividing device for a building hybrid riser

Abstract

The application discloses a new shunt device for a building mixed connection riser, which replaces a part of the mixed connection riser, connects the upstream of the riser and the downstream of the riser, and is internally provided with a cut-off port; sewage is cut off through a cut-off pipeline and an elbow and is discharged to a cut-off pipe outlet, and then is discharged to a sewage drainage system through a pipeline; excessive rainwater is discharged to the downstream section of the riser through an internal overflow channel; the device is a two-half assembly type, is externally mounted on the riser, is connected through connecting holes by using bolts and nuts, and is further fixed by using a support. The application is convenient and fast to install and construct, can cut off the sewage connected into the rainwater riser under the condition of ensuring rainwater drainage, introduces the sewage into the sewage drainage system, effectively cuts off the mixed flow sewage from the source, and reduces the sewage quantity entering the downstream rainwater drainage system.

Description

Technical Field

[0001] This invention relates to the field of building stormwater and sewage separation technology, and in particular to a separation device for mixed-connection risers in buildings. Background Technology

[0002] The wastewater concentration entering the treatment plant is low, resulting in low treatment efficiency. To further improve the quality and efficiency of wastewater treatment, it is necessary to improve wastewater collection at the source of the wastewater.

[0003] In some existing residential communities, washing machines and washbasins are placed on balconies. Wastewater from these activities is not discharged into sewage pipes but instead into rainwater downpipes. Rainwater then flows through the community's rainwater system into the municipal rainwater system, ultimately polluting urban water bodies. This necessitates implementing source separation of rainwater and wastewater in residential communities.

[0004] Currently, to solve the problem of separating rainwater and sewage in risers, either new drainage risers are constructed for rainwater collection, or horizontal main pipes are used for interception after the risers are laid. However, the former method involves high investment and requires construction on balconies, while the latter cannot utilize the riser elevation, requiring a greater burial depth to avoid existing pipes and resulting in a large construction area. Both methods significantly impact the lives of residents in the community, leading to high resistance to separation. Therefore, there is an urgent need for a separation device for mixed-flow risers to solve these problems.

[0005] Through patent and literature searches, we also found some existing information related to riser diversion, such as:

[0006] 1. A tubular mixed-flow riser for rainwater and sewage separation, application number: CN202210199695.5; applicant: Hongwei Construction Engineering Co., Ltd.; Abstract: This invention discloses a tubular mixed-flow riser for rainwater and sewage separation, belonging to the field of rainwater and sewage separation technology. The tubular mixed-flow riser for rainwater and sewage separation includes: a first cavity and a shell of a second cavity; an inlet pipe installed in the first cavity and connected to the inlet of the second cavity via a connecting pipe; and a first filter plate fixedly connected to the second cavity below the inlet. This invention achieves the beneficial effect of separating rainwater and sewage discharge, avoiding direct sewage discharge into rivers and causing pollution, and is conducive to the collection, utilization, and centralized management of rainwater discharge. By performing preliminary treatment on sewage, it can reduce the treatment time of sewage treatment plants, ensure the treatment efficiency of sewage treatment plants, effectively improve the practicality of the device, and is suitable for widespread use.

[0007] 2. Pipe-type mixed-flow riser rainwater and sewage separator, application number: N202010989277.7; applicant: Zhang Baoyue; abstract: This invention discloses a pipe-type mixed-flow riser rainwater and sewage separator, including a separator shell, a rainwater outlet pipe fixedly installed in the middle of the separator shell, which serves as both an overflow weir and a rainwater outlet pipe, the upper part is a pipe-type overflow weir, the lower part is a rainwater outlet pipe, a circular intercepting groove is provided between the pipe-type overflow weir and the separator shell, a guide vane is sealed at the bottom of the separator, a maintenance flushing pipe is fixedly installed on one side of the annular outer surface of the separator shell, and a sewage outlet pipe is fixedly installed on the other side of the annular outer surface of the separator shell, and a control ball valve is installed on the sewage outlet pipe. This tubular mixed-flow riser can intercept sewage and discharge it into the community's sewage network during the dry season, and control the flow during the rainy season using a combination of tubular overflow weirs and valves. At the same time, the maintenance flushing pipe design can achieve rapid air or water backwashing and cleaning, quickly removing debris. The tubular mixed-flow riser is characterized by good performance, easy installation, and low cost.

[0008] 3. A gravity-controlled balcony riser rainwater and sewage diversion device, application number: CN201920793198.1; applicant: Soochow University; abstract: This utility model discloses a gravity-controlled balcony riser rainwater and sewage diversion device. The upper end of the diversion device is connected to the balcony riser, and the lower end is respectively set as a rainwater zone and a sewage zone; the diversion plate is composed of a fixed diversion plate and a movable diversion plate hinged together; a drainage hole is opened at the bottom of the rainwater sampler; the middle of the rain sensor traction rope is connected to the movable diversion plate, and a counterweight and a water collection cup are hung at both ends of the traction rope respectively; a small drainage hole is opened below the water collection cup, the diameter of the drainage hole is smaller than the drainage hole of the rainwater sampler, and the upper part of the cup opening of the water collection cup is directly opposite the drainage hole of the rainwater sampler. The diverter takes advantage of the continuous nature of rainfall and the intermittent nature of sewage discharge. On rainy days, the water collection cup is always full, and its mass is greater than that of the counterweight, so the movable diverter plate is pulled towards the sewage area. On dry days, when the washing machine discharges sewage, the water collection cup is not full, and its mass is less than that of the counterweight, so the movable diverter plate is pulled towards the rainwater area. It is highly operable, economical, effective, and easy to install.

[0009] Some related riser stormwater and sewage separation equipment and their structures have been disclosed in publicly available documents, but existing stormwater and sewage separation equipment has a complex structure and is not convenient to install. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to provide a diversion device for mixed-connection risers in buildings, which is convenient and quick to install and construct, makes full use of the riser elevation for diversion, and minimizes the impact on residential residents.

[0011] This invention is achieved through the following technical solution:

[0012] A diversion device for mixed-connection risers in buildings is fixed to the rainwater diversion equipment on the riser by a fixed bracket, replacing part of the riser section. The diversion device is equipped with an interception port to intercept sewage, and the intercepted sewage is discharged through an interception pipe. The area around the interception port is an overflow zone for discharging excess rainwater to the existing riser below the device.

[0013] Conventional sewage interception involves constructing an interception well on the ground downstream of the mixed-flow riser to intercept the sewage before discharging it into the sewage network system. Compared to conventional methods, this invention can utilize the elevation advantage of the riser, allowing sewage to be intercepted directly on the riser and fed into the sewage system in suitable areas. This reduces the need for deeper pipes due to pipeline conflicts during downstream ground interception, minimizes the scope of construction excavation, and reduces the impact on residents.

[0014] To facilitate installation and fabrication, the diversion device is a two-part assembly type, externally mounted on a riser and connected via bolts and nuts through connecting holes, and can be further secured with brackets. Compared with other diversion devices, this invention uses a two-part assembly, avoiding cumbersome on-site construction work and improving installation efficiency.

[0015] The diversion device has an internal cavity with a cut-off port. The cut-off sewage is discharged to the outlet of the device's cut-off pipe through the cut-off pipe and elbow, so that it can be further discharged into the sewage drainage system through the pipe. Excess rainwater enters the downstream of the riser through the overflow channel inside the device.

[0016] The gap between the internal overflow channel and the downstream section of the riser should be sealed with waterproof material.

[0017] The interceptor port inside the diversion device is spaced from the upstream of the riser, with a net distance of not less than half the diameter of the riser, the diameter of the interceptor port is not less than the diameter of the riser, and the diameter of the interceptor pipe and elbow is not less than the designed sewage interception flow rate.

[0018] The material of the diversion device is not limited and can be plastic, stainless steel, etc. The internal space meets the space requirements of the interception port (3), the interception pipe and elbow and the overflow channel.

[0019] There is no limit to the installation height of the diversion device; the optimal height is one that facilitates installation and intercepts and drains sewage.

[0020] The installation and construction steps of the diversion device for mixed-connection risers in buildings are as follows:

[0021] A. Cut the drainage riser at a suitable location; the cutting length must ensure interception and overflow space, and is related to the user and water volume of the riser.

[0022] B. After disassembling the diversion device, attach it to the riser pipe and position the cut-off port directly below the upstream of the riser pipe. Adjust the spacing and the position of the cut-off pipe outlet.

[0023] C. Connect the disassembled diversion devices through the connection holes by applying adhesive or hot-melt method, and fix them with bolts and nuts;

[0024] D. Further secure the diversion device by installing brackets;

[0025] E. Connect the new pipeline to the outlet of the interceptor pipe and the sewage drainage system, link the sewage drainage, and install a liquid seal device depending on whether the riser enters the building interior. Then, carry out anti-corrosion and heat preservation according to the material and external conditions to complete the installation.

[0026] The present invention provides a diversion device for mixed risers in buildings, which adopts a two-part assembly type and is connected by bolts and nuts through connection holes. It has the advantages of simple manufacturing and simple installation.

[0027] The present invention provides a diversion device for mixed-connection risers in buildings, which is installed on the riser and can utilize vertical elevation for diversion, and has more conditions to connect to the sewage drainage system, reducing the ground excavation area.

[0028] The present invention provides a reliable and safe method for installing a diversion device for mixed-connection risers in buildings. It allows for quick disassembly and maintenance without disturbing residents and enables the separation of rainwater and sewage to be completed in one night. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a split top view of the present invention;

[0031] Explanation of the labels in the diagram:

[0032] 1. Upstream section of riser; 2. Diversion device; 3. Cut-off port; 4. Cut-off pipe and elbow; 5. Cut-off pipe outlet; 6. Internal overflow channel; 7. Connection hole; 8. Support; 9. Downstream section of riser. Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] A diversion device for mixed risers in buildings, wherein the diversion device 2 replaces a part of the mixed riser and connects the upstream section 1 and the downstream section 9 of the riser. The diversion device 2 is provided with an interceptor 3 inside. The intercepted sewage is discharged to the interceptor outlet 5 through the interceptor pipe and elbow 4, and then discharged to the sewage drainage system through the pipe. Excess rainwater enters the downstream section 9 of the riser through the internal overflow channel 6.

[0035] The diversion device 2 is a two-part assembly type, which is installed on the riser from the outside and connected by bolts and nuts through the connection hole 7, and then further fixed by the bracket 8.

[0036] The diversion device 2 is a hollow structure, and the cross-sectional area of ​​the internal overflow channel 6 is not smaller than that of the riser.

[0037] The interceptor 3 inside the diversion device 2 is spaced from the upstream of the riser, with a net distance of not less than half the diameter of the riser. The diameter of the interceptor 3 is not less than the diameter of the riser, and the diameter of the interceptor pipe and elbow 4 is not less than the designed sewage interception flow rate.

[0038] The installation and construction steps of the diversion device 2 are as follows:

[0039] A. Cut the drainage riser at a suitable location;

[0040] B. After disassembling the diversion device 2, attach it to the riser pipe and position the cut-off port 3 directly below the upstream 1 of the riser pipe. Adjust the spacing and the position of the cut-off pipe outlet 5.

[0041] C. Connect the disassembled diversion device 2 through the connection hole 7 by applying adhesive or by hot melting, and fix it with bolts and nuts;

[0042] D. Further secure the diversion device 2 by installing bracket 8;

[0043] E. The newly constructed pipeline connects the outlet of the interceptor pipe 5 and the sewage drainage system, links the sewage drainage, and a liquid seal device is installed depending on whether the riser enters the building interior.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A flow splitting device for a building hybrid riser, characterized by: The shunt device (2) replaces a part of the mixed connection riser, receives the riser upstream (1) and the riser downstream section (9), and is internally provided with a cutoff port (3) located directly below the riser upstream (1). The cutoff sewage is discharged to the cutoff pipe outlet (5) through the cutoff pipe and elbow (4), and then discharged to the sewage drainage system through the pipeline. The cutoff port (3) is surrounded by an overflow area, and excess rainwater is discharged into the riser downstream section (9) through the internal overflow channel (6); The shunt device (2) is a two-half assembly, which is externally mounted on the riser and connected by using bolts and nuts through the connecting hole (7), and is further fixed by using the bracket (8); The shunt device (2) is a hollow structure, and the internal overflow channel (6) has a flow cross section not less than the flow cross section of the riser; The cutoff port (3) in the shunt device (2) is spaced from the riser upstream, and the net distance is not less than half of the diameter of the riser. The diameter of the cutoff port (3) is not less than the diameter of the riser, and the diameter of the cutoff pipe and elbow (4) is not less than the designed overflow flow rate of the cutoff sewage.

2. The flow splitting device for a building hybrid riser of claim 1, wherein: The installation and construction method of the shunt device (2) is as follows: A. Cut the drainage riser at the appropriate position; B. After splitting the shunt device (2), it is sleeved on the riser, and the cutoff port (3) is located directly below the riser upstream (1). The spacing and the position of the cutoff pipe outlet (5) are adjusted; C. Through the connecting hole (7), the split shunt device (2) is connected by using adhesive or hot melting method, and is fixed by using bolts and nuts; D. The shunt device (2) is further fixed by installing the bracket (8); E. The new pipeline is connected to the cutoff pipe outlet (5) and the sewage drainage system, and the sewage drainage is connected. The liquid sealing device is arranged according to whether the riser enters the building indoor.

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