The hydraulic bottom-hinged weir gate is used in pipelines, box culverts, or channels. It serves for flushing, preventing backflow, and regulating purposes. The device opens downward, not occupying the upper space, hence the name bottom-hinged weir gate.

Hydraulic Lower-Sliding Weir Gate, Lower-Sliding Regulatory Weir Gate

Low-flange Sluice Gate, Hydraulic Low-flange Sluice Gate, Adjustable Sluice Gate, Stainless Steel Sluice Gate, Stainless Steel Adjustable Sluice, Flip Sluice Gate, Rainwater Diversion and Adjustment Sluice, Source Control and Pollution Intercepting Sluice Gate

Product Features
Tightly constructed, the weir gate opens downward, not occupying the installation space above and not affecting the landscape on the ground.
2. Long service life, equipped with anti-locking structure between the gate and guide rail, resulting in minimal wear on the sealing surface.
3. The weir gates are primarily made of stainless steel welding, offering excellent resistance to acids, alkalis, and most corrosive chemicals, as well as wastewater and seawater.
4. Electric control unit, with precise positioning and easy operation, enabling both local and remote control. Sluice gates can be stopped at any height, either on-site or remotely.
5. Simple maintenance and easy upkeep; in case of leakage after years of use, simply lift the gate and replace the rubber seal ring on the door frame, saving time and effort, and keeping repair costs low.
Lightweight, about 1/3 the weight of a standard gate. Excellent sealing, with a rubber soft seal, providing good sealing effect and capable of bidirectional sealing.

The early hydraulic sliding gate was merely a channel or river gate with basic water storage and drainage functions, its operation being simply opening and closing. However, through our company's research, we have found that under certain technical conditions, installing the sliding gate at urban river outlets, especially large outlets, can have a significant effect on the treatment of black and smelly water bodies, rainwater and sewage separation, and the construction of sponge cities.

Open-bottom Weir Gate, Liquid-Driven Open-bottom Weir Gate, Adjustable Weir Gate, Stainless Steel Weir Gate, Stainless Steel Adjustable Weir, Flip-type Weir Gate, Rainwater Diversion and Adjustment Weir, Source Control and Pollution Intercepting Weir Gate, Hydraulic Open-bottom Weir Gate, Open-bottom Adjustable Weir Gate

The liquid-driven downstream sliding weir gate is made of stainless steel 304 material, utilizing plates with a thickness of 10mm or more, offering a longer service life compared to traditional hydraulic gates. Its hydraulic transmission method effectively prevents sticking, which commonly occurs in harsh wastewater environments, and operates more safely and stably than electric gates.
Selecting a 380V high-power hydraulic pump ensures ample power for the gate's opening and closing. The double-layer steel wire coiled high-pressure hose is corrosion and pressure-resistant, equipped with a displacement sensor, pressure switch, and bi-directional balance valve, accurately reflecting the gate's status, pressure coefficient, and pressure maintenance effect. SCADA Control System: Utilizing Siemens PLC, Schneider Electric low-voltage electrical appliances, and other imported electrical components, it is configured with ultrasonic level gauges, level sensors, rainfall sensors, and COD water quality online analyzers, accurately measuring various conditions inside the weir well and providing the control system with correct parameters for action. Equipped with a remote module, high-definition camera, and the ability to view data or control equipment from a computer at any time and place.

Structure and Working Principle:
The hydraulic slide gate system primarily consists of the slide gate, hydraulic system, ultrasonic level gauge, and control system. For ease of maintenance in the future, a maintenance channel is usually provided in front and behind the slide gate.
The underflow weir gate is driven and controlled by an opening and closing hydraulic cylinder to lift or lower the gate plate. The hydraulic cylinder can be equipped with an automatic control system, allowing for unmanned automatic control of the liquid-driven underflow weir gate. Water from the upstream flows over the top of the gate plate. The gate plate can be raised or lowered as needed and can stop at any position to control the water distribution flow or adjust the upstream water level, enabling multiple functions such as flushing, water level control, and flow control.
Ultrasonic level sensors detect water levels on both sides of the weir gate and convert them into electrical signals for the control system. The control system drives oil cylinders on both sides of the weir gate, allowing the weir plate to slide up and down in the guide slots. Rubber seals are fitted on both sides and the bottom of the guide slots for sealing purposes (can be three-sided or four-sided sealing). The oil cylinders are equipped with position sensors, enabling the weir plate to stop at any position. In the event of a power outage, the system can control upstream water levels, flushing, and prevention of backflow, among other functions.

The early liquid-driven underflow sluice gates were merely channel and river gate structures, with only simple water storage and drainage functions, their operation being merely opening and closing. However, through our company's research, we have found that under certain technical conditions, installing the underflow sluice gates along urban river outlets, especially large-scale outlets, can have a significant effect on improving black and smelly water bodies, separating stormwater and sewage, and constructing sponge cities.
The hydraulic down-opening weir gate is made of stainless steel 304 material, utilizing plates with a thickness of 10mm or more, offering a longer service life than traditional hydraulic gates. Its hydraulic transmission method effectively prevents jamming that commonly occurs in harsh wastewater environments, and operates more safely and stably than electric gates.
Our company adheres to the philosophy of "Continuous Innovation and Sincere Service," tirelessly striving to create an environmentally friendly and comfortable social environment. Let's make the future more beautiful.