The submerged hole cast iron gate is a movable component used to open and close the water passages in certain hydraulic structures. It serves the purpose of adjusting water flow, controlling water levels, and facilitating the transportation of vessels. The manufacturer of submerged hole cast iron gates points out that when selecting cast iron gates, the following aspects should be considered: In terms of appearance, as the submerged hole cast iron gate has a well-designed concept to ensure its advantages in hydraulic construction, the choice of appearance is particularly important. Not only should it possess good aesthetic value, but it should also emphasize the integrity of the appearance. The manufacturer also emphasizes the importance of quality selection. The lifespan of the product should be particularly noted, as the service life of the product directly affects its quality. During selection, special attention should be paid to the quality display data of the product; only when quality is ensured can the product guarantee efficient work during use.
Porous cast iron gates come in multiple special models for various environments and facilities, such as quick-acting types with rapid opening and closing speeds, and high-lift models with significant vertical distances for opening and closing. These gates are connected to hoisting devices, like steel cables or cable pulley blocks, and are powered by a gear-driven system that winds and unwinds the cables to lift or lower the gate, known as a wire rope hoist. They are structurally simple, easy to manufacture, and convenient to maintain, widely used for the operation of various gate types. Porous cast iron gates are available in single-point and double-point configurations. These gates operate synchronously by connecting two single-point hoists with a connecting shaft, and can be designed for single-side or double-side drive. Typically, a single gate is equipped with one hoisting device, mounted on a pier above the gate channel.
The manufacturer of submersible cast iron sluice gates points out that there are not just screw type actuators. It's important to know that in the use of cast iron sluice gates, steel gates, and screw type actuators, winch actuators are also extremely widely used. Let's briefly introduce the performance characteristics of winch actuators. In terms of classification, winch actuators can be divided into single-point hoisting and double-point hoisting types. The manufacturer of submersible cast iron sluice gates notes that the single-point hoisting actuator is simpler to use. The double-point winch actuator, on the other hand, operates by synchronizing two single-point hoisting actuators connected by a shaft. It can function as a drive on one side or both sides, offering flexibility.
Cast iron镶铜sluice gates, under the action of the lifting and lowering mechanism, allow the gate leaf to slide up and down within the gate frame's guide tracks. It can partially or fully open and close the water passage under the pressure of the water column, forcing the gate to move downstream and tightly abut the gate frame's sealing surface.
Technical Specifications:
The PGZ series flat cast iron arch gates are manufactured, installed, and inspected in accordance with the national standards for design, production, corrosion prevention, raw material procurement, component processing, production processes, quality inspection, finished product sales, and after-sales service. The products have been certified by the Water Conservancy Ministry's Quality Testing Center to meet the technical requirements of hydraulic engineering and achieve the same level of performance and manufacturing accuracy as domestic counterparts. The PGZ series flat cast iron arch gates feature attractive appearance, simple structure, flexible operation, reliable performance, easy installation, tight water sealing, good water stopping properties, excellent impermeability, strong corrosion resistance, ability to withstand high water pressure, low friction, good water flow control, rational water distribution, safe river channel operation, long service life, and low maintenance costs.
Installation and Adjustment:
PGZ series flat cast iron arch gate, installation must check the large overall dimensions of the gate and the reserved aperture for the second phase concrete structure foundation layout, whether they match. It is recommended that the dimensions around the foundation layout aperture be 20 cm larger than the dimensions around the large overall shape of the gate.
1. Before installing the gate, confirm the direction of water flow and then adjust the correct height and position of the upper plane on the bottom transverse frame of the gate. The upper plane of the bottom transverse frame should be positioned at riverbed (or canal bed) level plus 0.5 meters to prevent the impact of water flow, which may push stones, silt, debris, etc., into the bottom transverse frame of the gate, preventing the gate from descending to the proper position and affecting the water-sealing effect.
2. Prior to gate installation, check all connection bolts for loosening that may have occurred during transportation and handling. If any are loose, tighten them with a wrench.
3. Check if the sealing surfaces around the top and bottom frame connections are misaligned. If misaligned, use a wrench to loosen the bolts at the connection and adjust the sealing surfaces to the same horizontal plane, then tighten them.
4. During assembly, to ensure a tighter seal between the gate leaf and gate frame, reducing the gap after installation, pressure plates and clamping irons are installed on the upper and lower horizontal frames of the gate. Additional top screws are added to the diagonal irons of the side vertical frames. Note that after adjusting the gap, remove the clamping irons and top screws to avoid affecting the opening and closing of the gate.
5. During gate installation, the gate should be installed as a whole. It is prohibited to install the gate leaf and gate frame separately to prevent the gate frame from bending and deforming, which may affect the water-stopping effect and the opening and closing operation.
6. After the gate is hoisted into the reserved foundation layout holes for the second phase concrete pouring, ensure that both sides of the gate frame are tightly supported by a level long level ruler against the plumb line. The horizontal cross frames are to be tightly supported against the horizontal line with a long level ruler. Once the gate is fully hoisted and positioned, adjust the correct front-to-back, left-to-right, and up-and-down positions. Then, securely weld the adjusting anchor bolts to the pre-fabricated reinforcing steel. Use a feeler gauge to check the gaps at all waterstop surfaces, and adjust gaps larger than 0.2mm with bolts to ensure that the large gaps at all waterstop surfaces are below 0.2mm. Support the two sides of the gate back face with steel or wooden rods to prevent them from being compressed during concrete pouring, which could cause bending and deformation of the side frames, affecting the gate's sliding movement within the gate frame. After confirming everything is correct, proceed with the second phase concrete pouring.
7. After the second phase pouring of the gate with cement, it is essential to promptly clear out the cement that has flowed into the gaps between the gate leaf, gate frame, and tightly closed pressure plate to prevent the cement from hardening and affecting the opening and closing of the gate.
