Self-flowing rainwater and sewage inlet variable flow control device

Abstract

The utility model discloses a self -inflow rain and dirt water inlet variable flow control equipment belongs to municipal drainage equipment field, and it is designed to solve the problem of the fixed flow of the existing sewage outlet valve, which cannot adapt to different drainage requirements. It includes first body and second body, and the first body concentric rotation sleeve is arranged at one end outside the second body, and the two are connected through the shaft to limit the axial displacement. The inside of the second body is a water cavity, and the other end is a completely open port. The corresponding ends of the two bodies are respectively provided with semicircular first and second through holes, and the through holes overlap to form a water passage. By rotating the two bodies to adjust the overlapping area of the through holes, the size of the water passage can be changed, and the sewage flow can be controlled.

Description

Technical Field

[0001] This utility model belongs to the field of sewage drainage technology, and in particular relates to a variable flow control device for a gravity-flow rainwater and sewage inlet. Background Technology

[0002] In urban infrastructure construction, municipal road drainage systems are a crucial component for ensuring safe passage during rainy weather and preventing urban flooding. Their drainage efficiency and stability directly impact the quality of urban operations. Among these components, sewage outlet valves, as the core control parts of the drainage system, play a vital role in regulating water flow and controlling the drainage rhythm. They are widely used in key nodes such as road storm drains and drainage pipe network inlets, and exert a decisive influence on the flow distribution and operational status of the entire drainage system.

[0003] Currently, most sewage outlet valves in mainstream urban municipal road drainage systems are fixed and non-adjustable. These valves have a fixed flow channel size at the factory, allowing only single-flow drainage control and preventing dynamic adjustment of the outlet size based on actual drainage needs. However, urban road drainage scenarios exhibit significant dynamic changes: on sunny days or in light rain, road drainage volume is low. If the valve's flow channel is too large, the water flow velocity within the drainage network may be too low, potentially causing sediment, fallen leaves, and other impurities to accumulate and eventually block the pipes, reducing the system's lifespan. During heavy rain or torrential downpours, road flooding increases rapidly, requiring quick drainage to ensure traffic safety. Fixed-size flow channels often cannot meet the high-flow drainage demands, causing rainwater to quickly accumulate on the road surface, affecting vehicle and pedestrian traffic. In severe cases, this can soak the roadbed, damage municipal facilities, and even trigger urban flooding. Utility Model Content

[0004] The purpose of this invention is to provide a variable flow control device for a gravity-flow rainwater and sewage inlet to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a variable flow control device for a self-flowing rainwater and sewage inlet, comprising a first body and a second body. The first body and the second body are matched. The first body is sleeved on one end of the second body and is concentrically arranged. The first body and the second body are rotatably connected along the central axis. The interior of the second body is a water cavity. The other end of the second body away from the first body is a fully open opening. A variable-sized water inlet is formed by the mutual rotation between the first body and the second body at the end away from the fully open opening. The water inlet communicates with the water cavity. The variable flow rate of sewage is controlled by the variable size of the water inlet. An annular sealing gasket is provided around the water inlet between the end face of the first body sleeved on the second body and the corresponding end face of the second body.

[0006] In a further embodiment of this invention, the inner diameter of the first body matches the outer diameter of the second body, so that sewage can only flow between the water cavity and the water outlet.

[0007] In a further embodiment of this utility model, the centers of the first body and the second body are rotatably connected by a pin, thereby restricting the degree of freedom of the first body and the second body in the axial direction of the pin. A bushing-type wear-resistant washer is provided between the outer wall of the pin and the inner wall of the central pin hole of the first body and the inner wall of the central pin hole of the second body.

[0008] In a further embodiment of this utility model, a first through hole is provided on one end of the first body, and a second through hole is provided on one end of the second body. The first through hole and the second through hole are configured in corresponding shapes and sizes, and the first through hole and the second through hole are arranged vertically in correspondence, forming a water passage between the first through hole and the second through hole.

[0009] In a further embodiment of this invention, both the first through hole and the second through hole are semi-annular hole structures.

[0010] In a further embodiment of this invention, the height of the first body is less than the height of the second body.

[0011] In a further embodiment of this invention, the outer surfaces of the first body and the second body are respectively provided with corresponding draft angles, and the end where the fully open opening is located is the large-diameter end.

[0012] In a further embodiment of this invention, both the first body and the second body are plastic rotating parts.

[0013] The beneficial effects of this utility model are:

[0014] This device is applied to urban municipal road drainage systems as an existing sewage outlet valve. The first body is concentrically rotated and connected to one end of the second body. The interior of the second body is a water cavity into which sewage enters. Semi-annular first and second through holes are respectively opened on the other ends of the first and second bodies. When the first and second bodies rotate to different angular positions, the first and second through holes are configured to form water inlets of different sizes. Sewage flows from the water cavity through the water inlets. The size of the water inlet determines the flow rate. Therefore, according to drainage needs, this device can quickly realize variable flow rate adjustment of sewage flow. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure when the inlet is completely closed.

[0018] Figure 4 This is a schematic diagram of the structure when the water inlet is fully open. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0020] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0021] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0023] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0024] This embodiment provides a variable flow control device for a gravity-flow rainwater and sewage inlet, including a first body 1 and a second body 2. The first body 1 and the second body 2 are matched. The first body 1 is sleeved on one end of the second body 2 and is concentrically arranged. The first body 1 and the second body 2 are rotatably connected along the central axis. The interior of the second body 2 is a water cavity. The other end of the second body 2 away from the first body 1 is a fully open opening 20. The rotation between the first body 1 and the second body 2 forms a variable-sized water inlet A located at the end away from the fully open opening 20. The water inlet A is connected to the water cavity. The variable flow rate of sewage can be controlled by the variable size of the water inlet A.

[0025] This structural design, through concentric rotation, allows the two bodies to flexibly adjust their relative angle, thereby changing the size of the inlet A. This solves the problem of fixed flow rate in traditional valves from the core structure, meeting the flow requirements of different drainage scenarios. For example, in sunny weather, the inlet A can be reduced to decrease impurity deposition, while in heavy rain, the inlet A can be increased to improve drainage speed.

[0026] The inner diameter of the first body 1 matches the outer diameter of the second body 2, ensuring that sewage can only flow between the water chamber and the inlet A. By precisely matching the inner and outer diameters of the two bodies, sewage leakage from the gap between the first body 1 and the second body 2 can be effectively prevented, ensuring that all sewage is discharged through the inlet A. This not only guarantees the accuracy of flow regulation but also prevents leaked sewage from eroding the road base or underground facilities, thus improving the sealing and practicality of the equipment.

[0027] The first body 1 and the second body 2 are rotatably connected by a pin 3, which restricts the degree of freedom of the first body 1 and the second body 2 in the axial direction of the pin 3. The pin 3 connection not only allows the two bodies to rotate flexibly along the central axis, ensuring the smoothness of flow regulation operation, but also effectively restricts the displacement of the two bodies in the axial direction, preventing the two bodies from separating or misaligning due to water flow impact or road vibration, ensuring long-term stable operation of the equipment, and reducing maintenance frequency and costs.

[0028] The first body 1 has a first through hole 10 at one end, and the second body 2 has a second through hole 21 at one end. The first through hole 10 and the second through hole 21 are configured in corresponding shapes and sizes, and are vertically aligned. A water inlet A is formed between the first through hole 10 and the second through hole 21. This design, using corresponding through holes to form the water inlet A, is simple in structure and easy to manufacture. Furthermore, the vertical alignment allows the overlapping area of ​​the two through holes to change precisely with the rotation angle, thereby achieving linear adjustment of the size of the water inlet A. This facilitates precise flow control by operators according to actual drainage needs, improving the ease of operation and adjustment accuracy of the equipment.

[0029] Both the first through hole 10 and the second through hole 21 are semi-annular hole structures. The semi-annular hole structure allows for a wider range of overlapping areas during rotational adjustment, enabling full-range flow regulation from "completely closed" (theoretically, when the two holes are completely offset, the water inlet A is at its smallest) to "maximum open" (when the two holes are completely overlapped, the water inlet A is at its largest), thus providing greater adaptability. Simultaneously, the semi-annular structure ensures smoother flow channels, reducing water flow resistance, preventing impurities from accumulating at the edges of the through holes, lowering the risk of blockage, and guaranteeing drainage efficiency.

[0030] The height of the first body 1 is less than the height of the second body 2. This height difference design facilitates quick positioning and installation by operators when the first body 1 is fitted over the second body 2, reducing installation difficulty; it also ensures that the water cavity of the second body 2 has sufficient volume to temporarily store some rainwater, preventing blockage of the inlet A due to excessive water flow at the beginning of a short-term heavy rainfall, while reserving reaction time for flow adjustment operations, thus improving the adaptability of the equipment in complex drainage scenarios.

[0031] Both the first body 1 and the second body 2 have corresponding draft angles on their outer surfaces, and the end where the fully open opening 20 is located is the larger diameter end. The corresponding draft angle design facilitates mass production using injection molding, reduces manufacturing costs, and improves the structural strength of the two bodies. The design of the fully open opening 20 being a larger diameter end increases the inlet area of ​​sewage entering the water cavity, reduces resistance when sewage enters, avoids the accumulation of impurities at the inlet, and further improves drainage efficiency.

[0032] Both the first body 1 and the second body 2 are plastic rotating components. Plastic material has the advantages of being lightweight, corrosion-resistant, and low-cost, which can effectively solve the problem of easy corrosion of traditional metal valves, extend the service life of the equipment, and reduce the difficulty of handling and construction during equipment installation. The rotating component structure makes the processing of the two bodies easier, and the smooth outer surface can reduce the frictional resistance between the water flow and the body, improve the drainage speed. In addition, the rotating component structure also ensures the stability when the two bodies rotate concentrically, avoiding adjustment jamming caused by structural asymmetry.

[0033] This device is applied to urban municipal road drainage systems as an existing sewage outlet valve. The first body 1 is concentrically rotated and connected to one end of the second body 2. The interior of the second body 2 is a water cavity into which sewage enters. The other ends of the first body 1 and the second body 2 are respectively provided with a semi-annular first through hole 10 and a second through hole 21. When the first body 1 and the second body 2 rotate to different angular positions, the first through hole 10 and the second through hole 21 are configured to form water inlets A of different sizes. Sewage flows from the water cavity through the water inlet A. The size of the water inlet A determines the flow rate. Therefore, according to drainage needs, this device can quickly realize the variable flow rate adjustment of sewage flow.

[0034] Both the annular sealing gasket and the bushing-type wear-resistant gasket are key auxiliary components of the equipment. The annular sealing gasket is installed on the mating end face of the first body 1 and the second body 2, and surrounds the perimeter of the water outlet A. Its function is to fill the microscopic gaps between the mating end faces of the two bodies, preventing silt and impurities contained in municipal sewage from leaking out of the end face gaps to the outside of the equipment, and preventing corrosion of road base or underground facilities. At the same time, the 1-3mm thickness design ensures the sealing effect without hindering the relative rotation of the first body 1 and the second body 2 along the central axis, ensuring the water outlet A The size adjustment function is normal; the bushing-type wear-resistant washer has a cylindrical structure and is fitted between the outer wall of the pin 3 and the inner wall of the pin hole of the first body 1 and the second body 2. On the one hand, it can reduce the direct friction between the pin 3 and the pin hole of the two bodies, reduce the wear of the hole wall caused by long-term rotation, avoid the pin 3 from loosening or the two bodies from misalignment, and ensure the adjustment accuracy of the water outlet. On the other hand, it can completely fill the gap between the pin 3 and the pin hole, prevent sewage and silt from seeping into the equipment from the pin hole and causing rotation jamming, and further improve the stability and service life of the equipment.

[0035] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A variable flow rate control device for a gravity-flow rainwater and sewage inlet, characterized in that, The device includes a first body and a second body, which are matched. The first body is sleeved on one end of the second body and is concentrically arranged. The first body and the second body are rotatably connected along the central axis. The interior of the second body is a water cavity. The other end of the second body away from the first body is a completely open opening. A water passage with a variable size is formed by the mutual rotation between the first body and the second body at the end away from the completely open opening. The water passage is connected to the water cavity. The variable size of the water passage enables variable control of the flow rate of sewage. An annular sealing gasket is provided around the water passage between the end face of the first body sleeved on the second body and the corresponding end face of the second body.

2. The variable flow control device for a gravity-flow rainwater and sewage inlet according to claim 1, characterized in that, The inner diameter of the first body matches the outer diameter of the second body, so that sewage can only flow between the water chamber and the water outlet.

3. The variable flow control device for a gravity-flow rainwater and sewage inlet according to claim 1, characterized in that, The centers of the first body and the second body are rotatably connected by a pin, which restricts the degree of freedom of the first body and the second body in the axial direction of the pin. Wear-resistant bushings are provided between the outer wall of the pin and the inner wall of the central pin hole of the first body and the inner wall of the central pin hole of the second body.

4. The variable flow control device for a gravity-flow rainwater and sewage inlet according to claim 1, characterized in that, The first body has a first through hole at one end, and the second body has a second through hole at one end. The first through hole and the second through hole are configured in corresponding shapes and sizes. The first through hole and the second through hole are arranged vertically and vertically, and a water passage is formed between the first through hole and the second through hole.

5. A variable flow control device for a gravity-flow rainwater and sewage inlet according to claim 4, characterized in that, Both the first through hole and the second through hole are semi-annular hole structures.

6. The variable flow control device for a gravity-flow rainwater and sewage inlet according to claim 1, characterized in that, The height of the first body is less than the height of the second body.

7. A variable flow control device for a gravity-flow rainwater and sewage inlet according to claim 1, characterized in that, The outer surfaces of the first body and the second body have corresponding draft angles, and the end where the fully open opening is located is the large diameter end.

8. A variable flow control device for a gravity-flow rainwater and sewage inlet according to claim 1, characterized in that, Both the first and second bodies are plastic rotating parts.

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