An adjustable weir device
By designing an adjustable overflow device and utilizing a combination of mounting brackets and removable baffles, the applicability and cost issues during drainage system category conversions are resolved, achieving efficient installation and stable drainage performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU
- Filing Date
- 2025-05-14
- Publication Date
- 2026-06-02
AI Technical Summary
Existing drainage system overflow outlets have low applicability when facing drainage system type conversion, resulting in poor drainage, high conversion costs, and great difficulty in conversion.
Design an adjustable overflow outlet device, including a mounting bracket and a detachable baffle. By installing several sub-baffles in the overflow channel, the height of the baffles can be adjusted to meet the needs of different drainage systems. Quick installation and fixation are achieved by using mounting grooves and fasteners.
This allows for adaptation to different drainage system types without replacing the overflow outlet, reducing conversion costs and difficulties, improving installation efficiency and device stability, and avoiding drainage problems.
Smart Images

Figure CN224314482U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an adjustable overflow outlet device, belonging to the field of drainage equipment technology. Background Technology
[0002] In the field of industrial buildings, factory buildings typically have large roof areas and high runoff coefficients, frequently facing the need to drain large amounts of rainwater in a short period. The stable operation of the drainage system is crucial for the normal use of the factory. Different types of drainage systems have different requirements for the height of overflow outlets. Therefore, when designing a drainage system, it is necessary to design the overflow outlet height to be compatible with the type of drainage system. This often results in the overflow outlet needing to be modified to adapt to changes in the drainage system type later, leading to low adaptability and high replacement costs for the existing overflow outlets.
[0003] Taking a Class E factory building project as an example, this factory building uses a large steel structure roof. Initially designed as a gravity flow drainage system, according to specifications, the overflow outlets for gravity flow drainage were to be 0.15m high and 0.30m wide, with overflow outlets at the four corners of the roof to meet overflow requirements. However, later, the factory owner requested a change to a siphon rainwater drainage system based on production needs. Because the siphon drainage system requires a specific water depth of 0.35m in front of the rainwater hopper, and the overflow outlets for the gravity flow drainage system had already been constructed, the existing overflow outlets overflowed even when the water depth reached only 0.15m, causing the siphon drainage system to malfunction and reducing the overall efficiency of the roof drainage system. Therefore, the existing overflow outlets needed to be completely replaced, increasing costs. Since the usage requirements of the factory building may change periodically, different drainage systems are needed to adapt to the factory's production requirements. Traditional overflow outlets cannot effectively adapt to changes in drainage methods, resulting in significant drainage problems, high conversion costs, and significant conversion difficulties. Therefore, an adjustable overflow device is needed to solve the problems of low applicability, low efficiency, high conversion cost, and high difficulty of existing drainage system overflows when facing drainage system category conversion. Utility Model Content
[0004] The purpose of this invention is to provide an adjustable overflow port device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable overflow outlet device, including a mounting frame and a baffle plate, wherein the mounting frame is fixedly installed on the overflow outlet of the building body through a connector, and the mounting frame is provided with an overflow channel communicating with the overflow outlet; a baffle plate is detachably installed in the overflow channel, and the water blocking height of the baffle plate is adapted to the overflow height.
[0006] Specifically, the baffle plate includes several sub-baffle plates, which abut against each other along the overflow channel to form a baffle height that matches the overflow height.
[0007] Specifically, the mounting bracket has mounting grooves installed radially, and several mounting positions are evenly distributed in the mounting grooves. Several sub-baffles are installed in the mounting grooves through both sides of the plate body, and are fixedly installed in the mounting positions by fasteners.
[0008] Specifically, the mounting bracket includes two outer frames, which are installed parallel to each other on both sides of the overflow outlet of the building, and the channel between the two outer frames forms an overflow channel.
[0009] Specifically, mounting grooves are respectively opened on the upper edge of the two opposing frames, and several second mounting grooves are evenly distributed radially on the side of the outer frame at positions corresponding to the mounting grooves to form mounting positions, and fasteners are installed in the second mounting grooves.
[0010] Specifically, the second mounting groove is perpendicular to the mounting groove and extends through the outer frame. The second mounting groove is connected to the mounting groove, and the end of the second mounting groove away from the mounting groove extends toward the overflow channel to form a fixed end. The fixing member is slidably disposed along the mounting groove and the second mounting groove.
[0011] Specifically, the fasteners include a fixing bolt and a nut; the fixing bolt passes through the second mounting groove through a threaded rod, and one end of the threaded rod extends to the outside of the second mounting groove to form a fastening end; the nut is threadedly connected to the fastening end.
[0012] Specifically, the area of the sub-baffle plate near the bottom is recessed horizontally toward the center of the plate to form a stepped plate structure, and the small stepped plate at the bottom constitutes a positioning part corresponding to the second mounting groove.
[0013] Specifically, when the sub-baffle is installed in the mounting position of the mounting groove, the length of the small stepped plate must be at least greater than the width of the flow channel.
[0014] Specifically, the connector includes several tie bars, which are installed parallel to each other at intervals on the mounting frame; one end of the tie bar is fixedly connected to the mounting frame, and the other end extends outward to form a fixed end that is fixedly connected to the building structure.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. The adjustable overflow device of this application is provided with a mounting frame, on which an overflow channel is connected to the overflow outlet. A baffle plate is detachably installed at the overflow channel, and the water-blocking height of the baffle plate is adapted to the overflow height. This allows the water-blocking height of the baffle plate to correspond to the drainage requirements of the plant's drainage system. This adapts to changes in the drainage system type by adjusting the baffle plate height, avoiding drainage problems caused by unreasonable overflow outlet design, and eliminating the need to replace the entire overflow outlet, thus reducing conversion costs and difficulty.
[0017] 2. Based on the foregoing, this application adjusts the overflow height of the overflow outlet by changing the water-blocking height of the baffle plate. Baffle plates of different heights can be manufactured, or multiple baffle plates of the same height can be integrated to create an adjustable water-blocking height. Considering that setting baffle plates of different heights would result in high manufacturing costs, this application preferably uses multiple sub-baffle plates integrated to adjust the overflow height, thereby reducing manufacturing costs, meeting different usage requirements, and facilitating conversion.
[0018] 3. Building upon the foregoing, to improve the stability and reliability of the adjustable overflow device of this application, this application, based on the shape of the overflow outlet, provides mounting grooves on the mounting frame to allow the sub-baffles to be installed within these grooves using both side plates, thus mounting the sub-baffles onto the mounting frame. Furthermore, the mounting grooves of this application have several mounting positions, ensuring that when the sub-baffles are installed on the mounting frame, each sub-baffle is installed in a corresponding mounting position within the groove, and is secured using fasteners. This allows for quick positioning and installation of the sub-baffles, improving installation efficiency. When installing the mounting frame, tie bars are provided to ensure a stable connection between the mounting frame and the building structure, further enhancing the installation stability and reliability of the overflow device.
[0019] 4. Based on the foregoing, the mounting frame of this application includes two outer frames. These two outer frames are installed parallel to each other on both sides of the overflow port, forming an overflow channel between them. Radial mounting grooves are provided on each outer frame for installing the sub-baffle. To provide mounting positions, several second mounting grooves are evenly distributed radially on the outer side of the outer frame, forming mounting positions. Fixing components are installed within these second mounting grooves. The spacing between adjacent second mounting grooves matches the height of the sub-baffle. The outer frame of this application provides stable support for the entire overflow port device to withstand water flow impact and external loads. The fixing components include fixing bolts and nuts. The fixing bolts can slide along the mounting grooves and second mounting grooves to allow them to slide to a suitable position according to the height of the sub-baffle, and the nuts are tightened to secure the sub-baffle. The sub-baffle of this application is easy to install.
[0020] 5. Based on the foregoing, the sub-baffle of this application has a horizontally recessed area near the bottom of the plate body towards the center, forming a stepped plate structure. The small stepped plate at the bottom constitutes a positioning part corresponding to the second mounting groove. This allows for rapid positioning and installation of the sub-baffle and the outer frame by using the small stepped plate at the bottom of the sub-baffle as the mounting positioning part. When the sub-baffle is installed in the mounting groove, the length of the small stepped plate is at least greater than the width of the flow channel. This ensures high installation accuracy between the baffle and the outer frame, preventing gaps and water leakage, and improving the water-blocking effect. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the adjustable overflow port device in this embodiment;
[0022] Figure 2 This is a schematic diagram of the installation of the adjustable overflow port device in this embodiment. Detailed Implementation
[0023] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model. For clarity, the roof gutter of the factory building in this embodiment has a depth of 600mm and a width of 600mm. Overflow outlets 8 with a width of 500mm and a height of 600mm are opened in the parapet walls 9 at the four corners 7 of the roof gutter. Since the overflow outlet heights for gravity flow drainage systems and siphon drainage systems are 150mm and 350mm respectively, to facilitate the modular design of the sub-baffles, the height of the sub-baffle body in this embodiment is 50mm. An appropriate number of sub-baffles can be selected according to different drainage system types to form an overflow outlet device with a suitable overflow height.
[0024] Please see Figures 1-2 This embodiment discloses an adjustable overflow outlet device, including a mounting frame and a baffle plate. The mounting frame is fixedly installed on the overflow outlet of the building via a connector, and the mounting frame is provided with an overflow channel communicating with the overflow outlet. A baffle plate is detachably installed in the overflow channel, and the water-blocking height of the baffle plate is adapted to the overflow height.
[0025] The water baffle in this embodiment includes several sub-water baffles 3, which abut against each other along the overflow channel to form a water baffle height that is adapted to the overflow height.
[0026] The mounting bracket in this embodiment includes two outer frames 2. The connector in this embodiment includes four tie bars 1, with two tie bars 1 installed at intervals on each outer frame. One end of each tie bar is fixedly connected to the outer frame, and the other end extends outward to form a fixed end that is fixedly connected to the building body. The two outer frames are installed parallel to each other on both sides of the overflow port of the building body through the fixed ends of the tie bars, and the channel between the two outer frames forms an overflow channel. The two outer frames are respectively provided with mounting grooves 5 along the outer frame, and ten second mounting grooves 6 are evenly distributed radially at positions corresponding to the mounting grooves on the sides of the outer frames to form ten mounting positions. Fixing members 4 are installed in the second mounting grooves.
[0027] Furthermore, in this embodiment, the second mounting groove is perpendicular to the mounting groove and extends through the outer frame. The second mounting groove is connected to the mounting groove, and the end of the second mounting groove away from the mounting groove extends towards the overflow channel to form a fixed end. The fixing member is slidably disposed along the mounting groove and the second mounting groove. The fixing member in this embodiment includes a fixing bolt 40 and a nut 41. The fixing bolt 40 passes through the second mounting groove through a threaded rod, and one end of the threaded rod extends to the outside of the second mounting groove to form a fastening end. The nut is threadedly connected to the fastening end.
[0028] In addition, in this embodiment, the plate area near the bottom of the sub-baffle plate is recessed towards the center of the plate in the horizontal direction to form a stepped plate structure, and the small stepped plate at the bottom constitutes a positioning part corresponding to the second mounting groove.
[0029] Working Principle: During installation, the adjustable overflow device in this embodiment involves workers first vertically installing two outer frames opposite the roof onto the building structure on either side of the overflow outlet. When installing the reinforcing bars, they are arranged according to the designed spacing and position to ensure a secure connection with the surrounding structure, enhancing structural stability. Professional measuring tools are used to ensure the outer frames are installed vertically, with positional deviations controlled within allowable limits. When actually installing the sub-baffles, workers select the appropriate number based on the overflow outlet's design type and height. For gravity-flow drainage, the baffle height is 150mm, meaning the overflow outlet height is 150mm, thus requiring three sub-baffles. For siphon drainage systems, the baffle height is 350mm, meaning the overflow outlet height is 350mm, thus requiring seven sub-baffles. Next, the sub-baffle is installed into the mounting groove of the outer frame. When installing the fixing bolts, first place them into the mounting groove. Based on the selected number of sub-baffles and the actual overflow port size, slide and adjust them to the appropriate position in the second mounting groove. Install the nuts onto the threaded end of the fixing bolts and then tighten them securely to fix the sub-baffle to the outer frame, ensuring the overall structural stability of the device. Throughout the installation process, strictly follow the design dimensions and construction specifications. After installation, conduct a comprehensive inspection to ensure that all components are securely installed, accurately positioned, and that the device can operate normally.
[0030] In this embodiment, when the adjustable overflow device is in use, if the rainfall does not exceed the normal drainage capacity of the drainage system, the rainwater is guided to the ground drainage equipment through the internal drainage pipes of the drainage system. However, if the rainfall exceeds the drainage capacity of the drainage system, the drainage system cannot drain the water in time, which will cause water to accumulate in the gutter. When the water level exceeds the overflow outlet, the water will overflow through the overflow outlet and be directly discharged into the external environment to ensure the overflow demand.
[0031] The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. For those skilled in the art, after learning the contents of the present invention, several equivalent changes and substitutions can be made without departing from the principle of the present invention. These equivalent changes and substitutions should also be considered to fall within the protection scope of the present invention.
Claims
1. An adjustable overflow outlet device, comprising a mounting bracket and a baffle plate, characterized in that: The mounting bracket is fixedly installed on the overflow outlet of the building through connectors, and the mounting bracket is provided with an overflow channel connected to the overflow outlet; a baffle plate is detachably installed in the overflow channel, and the water blocking height of the baffle plate is adapted to the overflow height.
2. The adjustable overflow port device according to claim 1, characterized in that: The water baffle includes several sub-water baffles, which abut against each other along the overflow channel to form a water baffle height that is adapted to the overflow height.
3. The adjustable overflow port device according to claim 2, characterized in that: The mounting bracket has a radially mounted mounting groove, and a number of mounting positions are evenly distributed in the mounting groove. Several sub-baffles are mounted in the mounting groove through both sides of the plate body, and are fixedly mounted in the mounting positions by fasteners.
4. The adjustable overflow port device according to claim 3, characterized in that: The mounting bracket includes two outer frames, which are installed parallel to each other on both sides of the overflow outlet of the building, and the channel between the two outer frames forms the overflow channel.
5. An adjustable overflow port device according to claim 4, characterized in that: The two outer frames opposite each other have mounting grooves along their respective outer frames. On the side of the outer frame, at a position corresponding to the mounting groove, a number of second mounting grooves are evenly distributed radially to form the mounting position. Fixing components are installed in the second mounting grooves. The spacing between two adjacent second mounting grooves is consistent with the height of the sub-baffle.
6. An adjustable overflow port device according to claim 5, characterized in that: The second mounting groove is perpendicular to the mounting groove and extends through the outer frame. The second mounting groove is connected to the mounting groove, and the end of the second mounting groove away from the mounting groove extends toward the overflow channel to form a fixed end. The fixing member is slidably arranged along the mounting groove and the second mounting groove.
7. An adjustable overflow port device according to claim 5, characterized in that: The fastener includes a fixing bolt and a nut; the fixing bolt passes through the second mounting groove through a threaded rod, and one end of the threaded rod extends to the outside of the second mounting groove to form a fastening end; the nut is threadedly connected to the fastening end.
8. An adjustable overflow port device according to claim 5, characterized in that: The sub-baffle plate has a horizontally recessed area near the bottom towards the center of the plate to form a stepped plate structure, and the small stepped plate at the bottom constitutes a positioning part corresponding to the second mounting groove.
9. An adjustable overflow port device according to claim 8, characterized in that: When the sub-baffle is installed in the mounting position of the mounting groove, the length of the small stepped plate is at least greater than the width of the flow channel.
10. An adjustable overflow port device according to claim 1, characterized in that: The connector includes several tie bars, which are installed parallel to each other at intervals on the mounting frame; one end of each tie bar is fixedly connected to the mounting frame, and the other end extends outward to form a fixed end that is fixedly connected to the building structure.