Due to the large land requirements, laborious installation process, and the need for long-term water supply interruption problems of traditional water supply pump rooms; our company has launched an integrated smart pump room that integrates functions such as pressure boosting, water quality monitoring, security warning, and remote monitoring. Today, let's learn about the application principle of this integrated smart pump room.
Host principle: The integrated intelligent pump room host is composed of a variable-frequency constant-pressure water supply system, water pumps, valves, frequency converters, control systems, sensors, and other components. Additionally, the pump room is equipped with environmental detection, water quality detection, security video and voice monitoring, and IoT cloud platform (remote monitoring) devices.
Control System: The PLC controller can detect the water pressure used by the user through sensors, and then perform further calculations before synchronously outputting this to the so-called variable frequency function (variable frequency converter). The variable frequency converter changes the frequency to control the running speed of the water pump, thereby adjusting the water pressure output by the water pump, stabilizing the water supply for the user and achieving the goal of stable water usage.
Silent operation: Sound insulation materials are placed inside the integrated intelligent pump room. The floor of the pump room has undergone professional vibration and noise reduction treatment to prevent noise from spreading outside. Additionally, a new type of silent variable-frequency energy-saving water pump (inlet pump) can be used, which can effectively control the noise level in the pump room to be within 40 decibels, achieving silent operation without disturbing the residents in a practical sense.
Effective energy saving: The integrated intelligent pump room adopts energy-efficient pumps (each pump is equipped with a frequency converter) and operates with variable frequency. The service life is longer than that of ordinary pumps (lasting 3-5 years). At the same time, the control system can be optimized and the operating time periods and pressure control points can be modified to accurately optimize the operation efficiency of the pump room.
What are the application scenarios? The integrated intelligent pump room is aesthetically pleasing in appearance, compact in size, easy to install, and convenient for later use and maintenance. It is widely applicable to: residential communities, renovation of old pump rooms, schools, industrial zones, and other areas that require secondary pressurized water supply.
In summary, the integrated intelligent water supply pump room features environmental protection, low noise, constant temperature, earthquake resistance, wind resistance, and corrosion resistance; it is also integrated with modern big data to achieve modular customization, refined production, and standardized installation.

The submersible sewage pump is a type of non-clogging pump and comes in various forms, such as the submersible type and the dry type. Currently, the most common submersible type is the WQ series submersible sewage pump, and the most common dry type sewage pumps include the W type horizontal sewage pump and the WL type vertical sewage pump. They are mainly used for transporting urban sewage, feces, or liquids containing fibers, such as paper debris and other solid particles. The temperature of the transported medium is usually not more than 80℃. Due to the presence of easily tangled or aggregated fibers in the transported medium, the flow path of this type of pump is prone to clogging. Once the pump is clogged, it will not be able to work normally and may even burn out the motor, thereby causing poor sewage discharge. This has a serious impact on urban life and environmental protection. Therefore, the anti-blocking performance and reliability are important factors in determining the quality of a sewage pump. Like other pumps, the impeller, the water pressure chamber, are the two core components of a sewage pump. The performance of these two components determines the performance of the pump. The anti-blocking performance, efficiency, and cavitation performance of the sewage pump, as well as the anti-abrasion performance, are mainly guaranteed by the impeller and the water pressure chamber.
1. Impeller structure type: The structure of the impeller is divided into four major categories: blade type (open type and closed type), swirl type, flow channel type, (including single flow channel and double flow channel) spiral centrifugal type. Open and semi-open impellers are easy to manufacture and can be easily cleaned and repaired when the impeller is clogged. However, during long-term operation, under the abrasive effect of particles, the gap between the blades and the inner wall of the water chamber will increase, thereby reducing the efficiency. Moreover, the increase in the gap will disrupt the pressure difference distribution on the blades. Not only will a large amount of vortex loss occur, but the axial force of the pump will also increase. At the same time, due to the increase in the gap, the stability of the liquid flow state in the flow channel is disrupted, causing the pump to vibrate. This type of impeller is not suitable for transporting media containing large particles and long fibers. In terms of performance, this type of impeller has low efficiency, with the maximum efficiency being approximately 92% of that of a common closed-type impeller. The head curve is relatively flat.
2. Spiral Impeller: For pumps equipped with this type of impeller, since part or all of the impeller is separated from the flow channel of the water pressure chamber, there is no clogging problem. It has good flow performance, strong ability to pass through particles and long fibers. Particles flow in the water pressure chamber is driven by the vortex generated by the rotation of the impeller. Suspended particles themselves do not generate energy; they only exchange energy with the liquid in the flow channel. During the flow process, suspended particles or long fibers do not come into contact with the blades, and the blades suffer less wear. There is no situation where the gap is enlarged due to erosion. In the long-term operation, it will not cause a serious decline in efficiency. Pumps with this type of impeller are suitable for media containing large particles and long fibers. In terms of performance, this impeller has a lower efficiency, which is only about 70% of that of a common closed impeller. The head curve is relatively flat.
3. Closed impeller: This type of impeller has a relatively high normal efficiency. Moreover, it maintains a relatively stable performance during long-term operation. The pumps equipped with this type of impeller have less axial force, and additional blades can be installed on the front and rear cover plates. The auxiliary blades on the front cover plate can reduce the vortex loss at the impeller inlet and the wear of the sealing ring caused by particles. The auxiliary blades on the rear cover plate not only balance the axial force but also prevent suspended particles from entering the mechanical seal chamber, providing protection for the mechanical seal. However, this type of impeller has poor resistance to blockage and is prone to entanglement. It is not suitable for wastewater media containing large particles (long fibers) or other untreated substances.
4. Flow channel type impeller: This type of impeller is a bladeless impeller, and the flow channel is a curved passage from the inlet to the outlet. Therefore, it is suitable for media containing large particles and long fibers. It has good anti-blocking performance. In terms of performance, this type of impeller has a high efficiency similar to that of ordinary closed impellers, but the pump's head curve of this type of impeller drops more steeply. The power curve is relatively stable, and it is less likely to cause excessive power problems. However, the cavitation performance of this type of impeller is not as good as that of ordinary closed impellers, and it is particularly suitable for pumps with pressurized inlet.
5. Spiral centrifugal impeller: The blades of this type of impeller are twisted spiral blades, extending axially from the suction port on the conical hub body. This type of impeller has the functions of both a volumetric pump and a centrifugal pump. When suspended particles flow through the blades, they do not collide with any part inside the pump, thus having good integrity. It causes little damage to the transported material. Due to the propelling effect of the spiral, the passage of suspended particles is strong, so pumps with this type of impeller are suitable for transporting media containing large particles and long fibers, as well as high-concentration media. In situations where strict requirements are imposed on the damage to the transported medium, they have distinct characteristics.
In terms of performance, this pump has a steeply declining head curve and a relatively flat power curve.
The most common type of water chamber used in sewage pumps is the volute. In in-line submersible pumps, radial guide vanes or channel-type guide vanes are more commonly selected. There are three types of volutes: helical, annular, and intermediate. Helical volutes are basically not used in sewage pumps. The annular water chamber is more frequently adopted in small sewage pumps due to its simple structure and convenient manufacturing. However, with the emergence of the intermediate type (semi-helical) water chamber, the application scope of the annular water chamber has gradually decreased. This is because the intermediate type water chamber combines the high efficiency of a helical design and the high permeability of an annular water chamber.

The key factor in choosing an sewage pump is its usability and reliability. The appropriate sewage pump can be selected based on the installation location of the pump, the liquid flow rate, the device head, and the liquid medium, etc.
Flow rate: The flow rate of the sewage pump should be selected based on the drainage second flow rate (unit: L/s); when there is a drainage volume adjustment, it can be selected according to the maximum drainage hourly flow rate (unit: m3/h). Head: The head of the sewage pump is determined by the lifting height, after calculating the pipeline loss.
If the medium to be conveyed contains certain solid substances (such as sand), this issue makes the requirements for the sewage pump in terms of motor capacity, bearing arrangement, and pump body sealing higher than those of ordinary water pumps. Generally, self-priming sewage pumps or submersible sewage pumps should be selected. When selecting and ordering, it is essential to clearly understand whether the sealing performance and capacity of the sewage pump you choose are appropriate.
The drainage pumps used in buildings include submersible sewage pumps, submerged drainage pumps, vertical sewage pumps and horizontal sewage pumps, etc. However, vertical sewage pumps and horizontal sewage pumps require the installation of isolation foundations, which occupy a certain amount of floor space. Therefore, they are less commonly used in buildings.
Inside buildings, with a smaller site and a smaller drainage volume, submersible sewage pumps and submerged sewage pumps can be given priority. Among them, the submerged sewage pump can generally be used in important places. It has a compact overall structure, small size, low noise, convenient movement, simple installation, significant energy-saving effect, easy maintenance, no need for a pump room, and can work underwater without the need for a pump house, greatly reducing the project cost.
Some key points to note:
In public building facilities, for each drainage collection tank, one backup water pump should be installed. During normal times, these pumps should operate alternately to reduce the long-term load operation of the pumps and extend their service life.
When extracting wastewater with large impurities, the outlet pipes of the submersible sewage pumps in different collection tanks should not be connected and discharged together. Considering that when the submersible sewage pump lifts wastewater containing large debris, it is most suitable to be equipped with a crushing device. When lifting wastewater containing a lot of fibrous substances, a device for cutting or a large-channel submersible sewage pump can be used.
When extracting general wastewater, the discharge pipes of the submersible sewage pumps in different collection tanks can be combined and discharged according to the actual situation.
When two or more pumps share a single outlet pipe, valves and check valves should be installed on each pump's outlet pipe. If single pump drainage may cause backflow, a check valve should be set. Pressure drainage cannot be discharged together with the gravity drainage pipes within the building.