A filter pool effluent weir water level regulating device

Abstract

The utility model discloses a filter tank effluent weir water level regulating device belongs to water purification technical field, including clean water pool, weir plate, turnover shaft, support connecting rod, vertical pull rod, vertical driver, the side of clean water pool forms the foundation weir wall, and the outside of foundation weir wall forms the side groove, and the side groove is equipped with the groove wall away from the foundation water weir, and the top of clean water pool and side groove is equipped with the roof, the weir plate is installed in the foundation weir wall through turnover shaft, and the weir plate turns around turnover shaft and changes its combination height with the foundation weir wall through turnover, and the vertical pull rod is installed in the roof in the mode of vertical movement and extends to the side groove downward, and the lower extreme of vertical pull rod is connected weir plate through support connecting rod and drives weir plate turnover through vertical movement, and vertical driver is installed in the roof and drives vertical pull rod vertical movement. The device can reduce the project initial investment and operation energy consumption greatly, and the self -use water coefficient of water plant is improved significantly, and the overall operation cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of water purification technology, and in particular relates to a filter bed effluent weir water level adjustment device. Background Technology

[0002] In existing water treatment plants, the effluent weir of a filter is typically used to control the effluent water level and the head during backwashing. This type of effluent weir generally includes a clear water tank, with a basic weir wall formed on the side of the tank. A side channel is located on the outer side of the basic weir wall, with a channel wall on the side of the side channel furthest from the weir wall. A top plate is installed above the entire clear water tank and side channel. During filter operation, the head above the effluent weir—the height by which the water level rises above the weir crest—directly determines the effective head during backwashing. This is especially true in siphon filter structures, where the water level in the clear water tank determines the energy and effectiveness of the backwash water.

[0003] However, most existing effluent weirs are fixed structures, and their crest elevation cannot be changed once determined during the design and construction phases. They lack adjustability, making it impossible to flexibly adjust the effluent water level according to different operating conditions. When the filter needs to increase backwashing intensity, insufficient water head above the weir may result in incomplete cleaning of the filter media and poor backwashing effect, thus affecting the effluent water quality and operating cycle of the filter. Although some water plants have installed manual weir plates to improve the adjustability of the weir crest, the limited space around the foundation weir wall makes manual replacement of the weir plates difficult and even poses certain safety risks. Furthermore, while the top cover plate of the effluent weir provides protection, it also restricts the operating space, making daily inspection, maintenance, and adjustment difficult.

[0004] Existing filter effluent weir structures generally lack automated adjustment capabilities, failing to respond dynamically in real time to changes in filter operation conditions such as water volume and quality fluctuations. This results in lagging adjustment capacity and poor operational flexibility. Adjustment methods primarily rely on manual intervention, leading to long adjustment cycles and low efficiency, which cannot meet the demands of modern water plants for efficient, intelligent, and controllable operation. Furthermore, the fixed weir crest elevation limits the optimization of water level control strategies under different operating modes, hindering the maximization of water production efficiency. In summary, existing filter effluent weir structures exhibit significant shortcomings in terms of adjustment performance, maintenance convenience, automation level, and adaptability to operating conditions, necessitating urgent improvement. Utility Model Content

[0005] In view of the problems of fixed and unadjustable weir crest elevation, difficulty in manual adjustment, low degree of automation, inconvenient maintenance and poor operational adaptability in the existing technology, this utility model provides a filter effluent weir water level adjustment device.

[0006] This utility model is implemented as follows: a filter effluent weir water level regulating device includes a clear water tank, a basic weir wall formed on the side of the clear water tank, a side groove formed on the outer side of the basic weir wall, and a groove wall away from the basic weir. A top plate is provided above the clear water tank and the side groove. The device is characterized by including a weir plate, a flipping shaft, a supporting connecting rod, a vertical tie rod, and a vertical actuator. The weir plate is installed on the basic weir wall via the flipping shaft, and the weir plate flips around the flipping shaft, changing its combined height with the basic weir wall. The vertical tie rod is installed on the top plate in a vertically movable manner and extends downward into the side groove. The lower end of the vertical tie rod is connected to the weir plate via the supporting connecting rod and drives the weir plate to flip through vertical movement. The vertical actuator is installed on the top plate and drives the vertical tie rod to move vertically.

[0007] In the above technical solution, preferably, the groove wall is equipped with a bearing seat, the bearing seat is provided with a limiting slide rod, the limiting slide rod is connected to the vertical tie rod, the upper end of the limiting tie rod is hinged to the lower end of the vertical tie rod through a first pin, the other end of the limiting tie rod is provided with an elongated hole, the limiting slide rod is fitted in the elongated hole and slides along the axial direction of the limiting slide rod in the elongated hole.

[0008] In the above technical solution, preferably, the lower end of the vertical tie rod is hinged to one end of the support rod through the first pin, and the other end of the support rod is hinged to the backwater side of the weir plate through the second pin.

[0009] In the above technical solution, preferably, the top plate is fixed with a sleeve, and the sleeve is provided with a guide hole through which the vertical tie rod passes and guides the vertical tie rod vertically.

[0010] In the above technical solution, preferably, a base plate is pre-embedded in the top plate, the sleeve is fixed to the base plate, and the vertical driver is fixedly installed on the base plate.

[0011] The effluent weir level regulating device of this filter has significant advantages in terms of structural design, regulation method and operation effect, and can effectively solve the problems of non-adjustable effluent weir, difficult regulation and inflexible operation in the existing technology.

[0012] This device features a compact structure, making full use of the existing foundation weir wall, side channels, and top plate space of the clear water tank. The weir plate is installed on the foundation weir wall via a flipping shaft, avoiding the problem of traditional manual weir plates being unusable due to limited installation space. It is particularly suitable for applications with compact effluent channel structures, such as siphon filters. Through the flipping structure design, the weir plate can be height-adjusted above the foundation weir wall without requiring large-scale modifications to the foundation structure, demonstrating good engineering adaptability and scalability.

[0013] The device employs a vertical actuator to move a vertical tie rod up and down, which in turn drives the weir plate to rotate around a pivot shaft via a support connecting rod, achieving precise adjustment of the weir crest height. This automated adjustment method can intelligently control the water head above the effluent weir according to operating conditions, precisely controlling the flushing head during the backwashing process of the siphon filter, improving backwashing efficiency, ensuring filter media cleanliness, extending the backwashing cycle, and enhancing the stability and efficiency of the filter operation. Simultaneously, during normal filtration operation, the device can also reduce the filtration head, thereby saving head loss and improving system energy efficiency.

[0014] Furthermore, the device optimizes the backwashing process of the siphon filter through automatic adjustment, extending the service life of the filter media, reducing the frequency of filter maintenance, and effectively reducing the workload of filter media replacement and equipment overhaul during operation. Since there is no need to add auxiliary equipment such as backwash water pumps, it can significantly reduce initial investment and operating energy consumption, significantly improve the water plant's self-consumption coefficient, and reduce overall operating costs. Therefore, this device not only possesses excellent operational performance and adjustment capabilities but also has significant economic benefits and promotional value. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 and Figure 3 This is a schematic diagram of the working state of the weir plate in this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0017] To address the problems of fixed and unadjustable weir crest elevation, difficulty in manual adjustment, low automation, inconvenient maintenance, and poor operational adaptability in existing technologies, this utility model provides a filter effluent weir water level adjustment device. To further illustrate the structure of this utility model, a detailed description is provided below in conjunction with the accompanying drawings: Please see Figures 1-3 A filter bed effluent weir water level regulating device includes a clear water tank, a basic weir wall 1 formed on the side of the clear water tank, a side channel formed on the outer side of the basic weir wall, the side channel having a channel wall away from the basic weir, and a top plate 2 provided above the clear water tank and the side channel.

[0018] It includes a weir plate 3, a tilting shaft 4, a support connecting rod 5, a vertical tie rod 6, and a vertical actuator 7.

[0019] The weir plate is installed on the foundation weir wall via a flipping shaft. The weir plate flips around the flipping shaft, changing its combined height with the foundation weir wall. Specifically, the weir plate is a long, narrow plate extending along the upper edge of the foundation weir wall, forming an upward extension of the upper edge of the foundation weir wall. The lower edge of the weir plate is installed on the foundation weir wall via the flipping shaft, which serves as the support for the flipping. The axis of the flipping shaft is parallel to the extension direction of the foundation weir wall, and the end of the flipping shaft is installed on the foundation weir wall via a shaft seat. In this embodiment, the flipping shaft is a fixed shaft, and the lower edge of the weir plate forms a shaft hole through which the flipping shaft passes. The flipping shaft is fitted into the shaft hole, thus achieving the flipping installation of the weir plate. When the weir plate is vertical, the combined height between the weir plate and the foundation weir wall is at its maximum, and the water level at the filter effluent weir is at its highest.

[0020] A vertical tie rod is installed on the top plate and extends downward into the side channel, moving vertically. The lower end of the vertical tie rod is connected to the weir plate via a support link, and the weir plate is driven to flip by vertical movement. The support link is a linkage that converts the vertical movement of the vertical tie rod into the flipping action of the weir plate. A vertical actuator is installed on the top plate and drives the vertical tie rod to move vertically. In this embodiment, specifically, the lower end of the vertical tie rod is hinged to one end of the support link via a first pin 8, and the other end of the support link is hinged to the backwater side of the weir plate via a second pin 9. The axes of the first and second pins are parallel to the axis of the flipping shaft. The length of the support link is required to be greater than the vertical distance between the lower end of the vertical tie rod and the backwater surface of the vertically lower weir plate. A bearing seat is fixed on the backwater side of the weir plate, and a second pin is installed on this bearing seat. During the vertical movement of the vertical tie rod, the weir plate is driven to flip around the flipping shaft via the support link. When the weir plate flips to a vertical position, it forms the highest water level weir plate.

[0021] A sleeve 10 is fixed to the top plate, and the sleeve has a guide hole through which the vertical tie rod passes and guides the vertical tie rod vertically. A base plate 11 is pre-embedded in the top plate, the sleeve is fixed to the base plate and pre-embedded in the top plate, and the vertical actuator is fixedly installed on the base plate. The sleeve is a vertically extending basic component located in the side groove. It serves as the installation base for the vertical tie rod, forms a guide component for the vertical movement of the vertical tie rod, and provides reliable radial stability for the vertical tie rod, thereby ensuring effective bearing of the force exerted on the vertical tie rod by the weir plate through the support connecting rod. In this embodiment, specifically, the sleeve is a metal sleeve component, the base plate is a pre-embedded flat plate, the upper end of the sleeve is welded with a flat plate, and the flat plate has bolt holes for fixing the vertical actuator.

[0022] In this embodiment, a shaft seat 12 is installed on the tank wall, and a limiting slide rod 13 is provided on the shaft seat. The axis of the limiting slide rod is parallel to the axis of the flipping shaft. A limiting pull rod 14 is connected between the limiting slide rod and the vertical pull rod. The upper end of the limiting pull rod is hinged to the lower end of the vertical pull rod through a first pin. The other end of the limiting pull rod is provided with an elongated hole, in which the limiting slide rod is fitted and slides along the axial direction of the limiting slide rod. In this embodiment, when the weir plate is flipped to a completely vertical state, the limiting slide rod slides to the extreme position at the lower end of the elongated hole, and the vertical pull rod moves downward. After the limiting slide rod slides to the extreme position at the other end of the elongated hole, the vertical pull rod forms a downward extreme position, thereby limiting the flipping angle of the weir plate. By selecting limiting slide rods with elongated holes of different lengths, the flipping angle of the weir plate can be set.

[0023] In this embodiment, the weir plate is preferably made of stainless steel or corrosion-resistant alloy material to ensure its structural strength and corrosion resistance during long-term immersion operation. The tilting shaft, the first pin, and the second pin can be made of galvanized carbon steel or stainless steel to ensure their load-bearing capacity and corrosion resistance. The vertical tie rod and the support connecting rod are also preferably made of metal materials with high rigidity, such as stainless steel or aluminum alloy profiles, to ensure stable and reliable force transmission. The length of the weir plate should be basically consistent with the length of the foundation weir wall, preferably 80%-100%. When in the vertical state, it forms the highest outlet weir water level. The length of the support connecting rod is preferably 1.2 to 2.0 times the vertical distance between the lower end of the vertical tie rod and the backwater surface of the weir plate in the vertical state to ensure sufficient tilting stroke and lever arm.

[0024] Under normal filter operation, the vertical actuator maintains the vertical tie rod in a fixed position, with the weir plate tilted or partially raised, resulting in a normal filtration water level at the effluent weir. When backwashing is required, the control system or manual operation activates the vertical actuator, moving the vertical tie rod upwards. This drives the support rod to rotate the weir plate around the tilting axis to a near-vertical position, raising the effluent weir top height, increasing the backwash head, and enhancing the backwashing effect. After backwashing, the vertical actuator reverses its movement, lowering the vertical tie rod and restoring the weir plate to its initial state, restoring the normal filtration water level. The entire adjustment process can be achieved through an automated control system or manual operation, offering convenient operation and rapid response. The vertical actuator can be an electric push rod, pneumatic actuator, hydraulic cylinder, stepper motor with screw drive mechanism, or other mechanisms capable of stable vertical drive, flexibly selected according to the application scenario and control accuracy requirements. Preferably, an electric push rod with feedback function combined with a PLC control system is used, enabling closed-loop water level control and automatic adjustment of the weir plate position to meet the water plant's operational needs.

[0025] To ensure no leakage gaps occur between the weir plate and the foundation weir wall, a sealing gasket is installed between the lower edge of the weir plate and the upper edge of the foundation weir wall. The sealing gasket is made of flexible rubber and is fixed to the surface of the foundation weir wall by screws or adhesive. The sealing gasket is arc-shaped and can remain in contact with the weir plate during its rotation, ensuring water flow tightness and preventing short circuits or backflow of the filter effluent.

[0026] For ease of installation and maintenance, both ends of the tilting shaft are connected to the shaft seat via screws or plugs, allowing the entire weir plate to be removed during maintenance. Both the first and second pins are detachable, using bolts or pins with cotter pins, enabling quick assembly and disassembly of the support rods, weir plate, and vertical tie rods. The sleeve on the top plate can be designed as a replaceable modular structure; if the vertical tie rod or actuator is damaged, it can be directly replaced within the top space without entering the clear water tank, greatly improving maintenance convenience and safety.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filter bed effluent weir water level regulating device, comprising a clear water tank, wherein a basic weir wall is formed on the side of the clear water tank, a side channel is formed on the outer side of the basic weir wall, the side channel has a channel wall away from the basic weir, and a top plate is provided above the clear water tank and the side channel, characterized in that: The system includes a weir plate, a flipping shaft, a support link, a vertical tie rod, and a vertical actuator. The weir plate is installed on the foundation weir wall via the flipping shaft. The weir plate flips around the flipping shaft, changing its combined height with the foundation weir wall. The vertical tie rod is installed on the top plate and extends downward into the side groove. The lower end of the vertical tie rod is connected to the weir plate via the support link and drives the weir plate to flip via vertical movement. The vertical actuator is installed on the top plate and drives the vertical tie rod to move vertically.

2. The filter effluent weir water level regulating device according to claim 1, characterized in that: The groove wall is equipped with a bearing seat, and the bearing seat is provided with a limiting slide rod. The limiting slide rod is connected to the vertical tie rod. The upper end of the limiting tie rod is hinged to the lower end of the vertical tie rod through a first pin. The other end of the limiting tie rod is provided with an elongated hole. The limiting slide rod is fitted into the elongated hole and slides along the axial direction of the limiting slide rod in the elongated hole.

3. The filter bed effluent weir water level regulating device according to claim 2, characterized in that: The lower end of the vertical tie rod is hinged to one end of the support rod via the first pin, and the other end of the support rod is hinged to the backwater side of the weir plate via the second pin.

4. The filter bed effluent weir water level regulating device according to claim 3, characterized in that: The top plate is fixed with a sleeve, and the sleeve is provided with a guide hole through which the vertical tie rod passes and guides the vertical tie rod vertically.

5. The filter effluent weir water level regulating device according to claim 4, characterized in that: A base plate is pre-embedded in the top plate, the sleeve is fixed to the base plate, and the vertical driver is fixedly installed on the base plate.

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