Submersible pump coupling assembly, auto-transformer, auto-transformer mounted lifting pump
Jiangsu Du'an Environmental ProtectionSubmersible pumpCoupling deviceRubber is commonly used in China.O-rings. Due to their simple shape, they are easy to manufacture, affordable, and lightweight with a small cross-sectional size (only a few millimeters), making them material-efficient. They are easy to use, with straightforward installation and removal processes. Their standout feature is the excellent sealing capability, suitable for a wide range of applications. Static sealing working pressure can exceed 100MPa, while dynamic sealing can reach 30MPa. They are suitable for temperatures between -60°C to 200°C, meeting the requirements of various media. Consequently, they are increasingly widely used in pump design.
Jiangsu Du'an Environmental ProtectionSubmersible Pump Coupling Gasket Material: Nitrile RubberWater 1. New model straight automatic coupling devicePlease provide the Chinese content that needs to be translated into American English.Minimize water flow loss in the outlet pipe to the maximum extent. 2. The water pipe can be extended horizontally to any length, easy to install, and saves installation materials; 3. No need for rubber gaskets, rigid coupling, self-sealing, and never leaks throughout its lifetime; 4. The coupling surface does not stick, making it effortless to lift the pump and preventing jamming when lowering the pump; 5. Small in size and light in weight, it is an ideal product for special environment use.
Submersible Pump Auto- coupling DeviceProduct Overview
An automatic coupling device for submersible pump discharge flange to automatically connect with the discharge pipeline system.The submersible pump assembly consists of a discharge flange, an additional coupling flange, and an outlet pipe support flange. Each side of the additional coupling flange and the outlet pipe support flange has a pair of wedges with their wedge points located near the horizontal centerline of the flanges. As the submersible pump descends from above the water pit, the wedges on both sides of the additional coupling flange and the outlet pipe support flange interlock. Under the weight of the submersible pump and the action of the sloping wedge faces, the two flange surfaces are tightly pressed together, as if the two flanges are securely fastened by two bolts. Even with high water pressure from the submersible pump, the flanges cannot be pushed apart and cause extensive leakage. When the submersible pump is lifted from the water pit, the two pairs of wedges can easily disengage along the sloping surface, thus activating the automatic coupling function. This allows for easy and automatic assembly and disassembly of the submersible pump while solving the issue of extensive water leakage between the coupled flanges, thereby saving energy.
Submersible sewage pumpDN50 Automatic Coupling Device, including a coupling base, coupling slider, guide rod, and upper fixed plate. The contact surface between the coupling base and the coupling slider features annular grooves, with soft sealing gaskets securely fastened within them. This structure ensures a tight seal with the annular sealing grooves, firmly sealing the coupling contact surface between the coupling slider and base.
Submersible sewage pumps are designed with soft sealing gaskets that are tightly fitted and secured in grooves. When the coupling slide plate and the coupling base are coupled together, the soft sealing gasket will not dislodge from the groove due to relative movement between the two contact surfaces, thereby ensuring the seal integrity between the two surfaces. A submersible sewage pump is a pump that is integrated with its motor., and submerged-pump products operating underwater,
Automatic Coupling Device Advantages of Submersible Sewage Pumps:
Compact structure, small footprint. Waste water pumps can be directly installed in the sewage pool due to their immersion in the liquid, eliminating the need for a dedicated pump house. This saves a considerable amount of land and construction costs. Easy installation and maintenance. Small waste water pumps can be installed freely, while large ones usually come with automatic coupling devices for easy installation and maintenance.
2. Long continuous operation time. The sewage pump, with the pump and motor on the same shaft and a short shaft, has a light-weight rotating part, resulting in a relatively small load (radial) on the bearings, thus offering a much longer lifespan than general pumps. No cavitation damage or issues with filling and draining water exist. Particularly, the latter greatly facilitates the operators.
3. Submersible sewage pumps and submersible drainage pumps are used for drainage within buildings.And horizontal sewage pumps, etc. Due to the generally smaller space within buildings, with low drainage volume, submersible sewage pumps and submerged drainage pumps can be prioritized for drainage.Generally used in important locations.Vertical and horizontal sewage pumps require vibration isolation foundations, self-priming suction, and occupy a certain amount of space, thus they are less commonly used in buildings. The flow rate of drainage pumps should be selected according to the design second flow rate of domestic drainage.
4. When drainage adjustment is available, the domestic drainage can be adjusted accordingly.Peak timeHourly flow rate selection. The drainage pump flow rate in the fire elevator sump is not less than10L/s. The head lift of the drainage pump is determined after calculating based on the lift height and pipeline loss, and then an additional free water head is added. The free water head is preferably 0.02 to 0.03 MPa. The flow velocity of the suction and discharge pipes of the drainage pump should not be less than 0.7 m/s and not more than 2.0 m/s. In public buildings, one standby pump should be set for each unit of domestic drainage collection pond, and they should run alternately during normal times. For basement, equipment machine rooms, and garage ground washing drainage, no pump is required if there are two or more drainage pumps.
5. When it's not possible to install an emergency drainage pipe in the collection pond, the pump should have a continuous power supply; if the drainage inlet pipe can be shut off, a continuous power supply may not be necessary, but an alarm system should be installed.
6. When lifting wastewater with high impurities, the outflow pipes of submersible sewage pumps from different collection ponds should not be merged for discharge.
7. When upgrading general wastewater treatment, consider merging the discharge pipes from different sump pumps based on actual conditions. When two or more pumps share a single discharge pipe, valves and check valves should be installed on each pump's discharge pipe. A check valve should be installed if there's a possibility of backflow during single-pump drainage. Pressure drainage should not be combined with the gravitational drainage pipes within the building for discharge.
8. When the submersible sewage pump is lifting debris containing large pieces, it is advisable to have a crushing device. For lifting sewage containing a high amount of fibrous matter, a large-diameter submersible sewage pump should be used. A fixed auto-transformer unit for the pump can be employed when the motor power is 7.5kW or more, or the outlet pipe diameter is 100mm or more (DN100 or more).
9. When the submersible sewage pump motor power is less than 7.5kW or the outlet pipe diameter is less than DN100, a flexible hose mobile installation can be used. When using a submersible sewage pump for draining the sewage collection pond, a fixed self-coupling device for the pump should be installed for easy maintenance. The drainage pump should be capable of automatic start/stop and on-site manual start/stop. Multiple pumps can be connected in parallel for alternating operation, or can be put into service in sections.
A quick and automatic coupling device for submersible pumps, belonging to the pipeline connection field, consists of guide rails, guide wheels, fixed outlet elbows, coupling plates, connection plates, and limit rods, etc. Its characteristic is that the pump housing connects with the fixed outlet elbow through these components without using bolts, ensuring a sealed connection and maintaining alignment. This feature allows for the pump to be removed from the well without disassembly, simply hoisted out and installed by lowering it down the guide rail.
Automatic Coupling DeviceIncluding coupling bases, coupling slides, guide rods, top mounting plates, and coupling base, brackets, profile washers.
