V. Operating Conditions for WQ Type Submersible Non-Clog Sewage Pumps:
1. Medium temperature not exceeding 60°C, medium density of 11.3×10^3 kg/m^3, pH value between 5-9.
2. Pumps without an internal self-flowing circulation cooling system must have no more than 1/2 of the motor exposed above the liquid surface.
3. This pump is primarily made of cast iron, thus it is not suitable for pumping highly corrosive liquids.
4. The volume ratio of solid phase in the conveying medium is below 2%.
Core Concept
"Create world-class brands, establish superior quality"
Shanghai Riqian Pump Industry Co., Ltd. adheres to the core corporate culture of "Creating World-Class Brands, Building Excellent Quality" under the "Double Quality" philosophy, and applies it across all levels, including internal company management, relationships with customers, society, competitors, and other industry collaborators.
Other concepts
Company Philosophy: Quality First, Reputation Above All
Corporate Values: Share joys and sorrows with customers
Company Goals: Stay ahead of the curve, strive to create *
Corporate Spirit: Pragmatism, Innovation, Brand Creation, Progressiveness, Devotion
Corporate Style: Strict and Efficient, Passionate and Attentive
Company Philosophy: People-Centric, Integrity in Dealing
Survival Philosophy: Quality Forges the Future
Employment Philosophy: Ability determines position, contribution determines value.
Educational Training Philosophy: Empower employees to excel, enhance the company's *
Market Philosophy: Markets are created
Sales Philosophy: Passion born from love, credibility as the cornerstone of success
Competition Philosophy: Seize the initiative, forge ahead without hesitation.
Investment Philosophy: Not for high returns, but for quality.
Product Development Concept: Guide consumption, meet demands
Management Philosophy: Achieve substantial returns with economic investments.
Service Philosophy: Achieve Touch with Professionalism and Sincerity

③Compact overall structure, small in size, low noise, significant energy-saving effect, easy to maintain, no need for a pump house, can work submerged in water, greatly reducing the construction cost.
④ The pump features a high-precision anti-interference leakage detection sensor in the sealing oil chamber, as well as a pre-installed thermal sensor in the stator winding for motor protection.

Utilizing a unique single or double-blade impeller structure, it significantly enhances the throughput capacity for debris, allowing for effective passage of fibrous materials up to five times the pump's diameter and solid particles with a diameter approximately 50% of the pump's diameter.
② The mechanical seal utilizes a new, hard and corrosion-resistant tungsten carbide material, and the seal has been improved to a double-end face seal. This design allows the pump to operate safely and continuously for over 8,000 hours within the oil chamber.

1) It is mandatory to select a submersible sewage pump brand that is manufactured in strict accordance with international ISO 9906 or domestic current standards, and has been certified as qualified by an authoritative institution through comprehensive performance testing.
7. The WQ Submersible Sewage Pump can be equipped with a dual-track automatic coupling installation system to meet customer requirements. This system facilitates installation and maintenance, eliminating the need for personnel to enter the sewage pit.
Section 8: Structure of WQ Submersible Non-Clog Sewage Pump
The WQ type submersible non-clogging sewage pump is composed of two parts: the motor and the pump. These two components are isolated by an oil separator chamber and a mechanical sealing assembly, making it an integrated motor product. The motor and pump share the same shaft (rotor), resulting in a short overall pump length and a compact structure. Equipped with various protective devices, the pump operates safely and reliably. The main functions of its key components are as follows:
WQ Type Submersible Non-Clogging Sewage Pump Structure
Signal Line 1: Equipped with a full-featured pump control cabinet for pump protection, including leak detection, phase failure, short circuit, overheating, and motor overload.
Stator: Uses B or F grade insulation.
Leak Detector 11: This component is installed in the oil chamber. When the mechanical seal is damaged, water enters the oil chamber, and the probe can send a signal to the control system for pump protection.
Mechanical Seal 13: Utilizes a double-string sealed design, made with a new type of hard, corrosion-resistant carbide tungsten material, featuring reliable sealing, wear resistance, and long lifespan.
Impeller 17: The impeller features a single or double-channel structure, offering strong throughput capability to pass large materials and fibrous debris, reducing clogging and entanglement issues.
Pump Model 15: Designed for use with impellers to ensure high efficiency in the pump.
Seal Ring 18: Installed at the pump body's mouth ring. Replaceable when the mouth ring wears due to impeller operation, ensuring optimal pump efficiency.
Section 9: Features of the WQ Non-Clogging Sewage Pump Impeller Design:
To ensure smooth passage of waste, the width of the impeller's flow surface must be increased. For large pumps, dual or triple-blade designs can be used; for small pumps, a single (or dual) channel configuration is recommended.
It resembles a bend pipe of the same cross-sectional size and boasts excellent flow characteristics. It avoids potential blockages and entanglements that water flow might cause at low speeds. This uniquely designed impeller
Channels, complemented with properly designed volute chambers, allow paper, textiles, garbage bags, and other materials to pass freely through the wastewater. The impeller has been dynamically and statically balanced, ensuring the pump operates smoothly during no-load testing and under load.
No vibration is generated during the loading process.
Chapter 10: Installation and Operation of Submersible Sewage Pumps
Our submersible sewage pumps are designed with a coaxial motor and compact structure, offering high efficiency, ease of installation and maintenance, economic operation, and strong adaptability. The installation methods include mobile and fixed installations.
Set installation, fixed installation, which is further divided into automatic coupling installation and fixed dry installation, and mobile installation, also known as free installation.
Automatic coupling installation
The automatic coupling installation device allows for quick and easy insertion of the electric pump into the wastewater medium along the sliding guide rail, with the pump and base automatically coupling and sealing. Installation and maintenance are extremely convenient.
In this type of installation, the pump is connected to the coupling device, with the coupling base securely fastened at the bottom of the pump pit (when constructing the effluent pit, the coupling base is fastened using pre-buried anchor bolts).
The pump can automatically move up and down within the guide rail. When the pump is lowered, the coupling device automatically couples with the coupling base, and when lifting the pump, it automatically disconnects from the coupling base.
This configuration can be equipped with hydraulic switches, intermediate terminal boxes, and fully automatic protection control cabinets according to customer requirements. When selecting, please specify the pump model, installation method, pool depth, and pump control.
Manufacture with protective mechanisms to ensure optimal systems. Special materials pumps can be provided upon the user's specific request.
Submersible Sewage Pump Installation Method
Permanent dry installation
The pump unit is installed on the other side of the pump pit, together with the inlet pipe, fixed on the base. Due to the water jacket cooling system, it ensures the pump operates under full load conditions. Advantages: Water flow against...
Continuous impact on water puddles does not damage the pump and can withstand unexpected flooding. Suitable for municipal construction and the discharge of wastewater from underground pump stations under interchanges.
Portable installation method
Electric pumps are supported by brackets, and the water outlet hose can be connected. Suitable for river management, industrial wastewater discharge, and sludge removal in municipal construction.
Recommended Other Waste Water Pump Series Products:
QWP Type Stainless Steel Submersible Sewage Pump, WQD Type Single Phase Submersible Sewage Pump, WQS Type High-Flow Sewage Pump, WQR Type High-Temperature Hot Water Submersible Sewage Pump
JYWQ Submersible Self-Scraping Sewage Pumps, JPWQ Stainless Steel Self-Scraping Sewage Pumps, AS Type Cut-Type Submersible Sewage Pumps, WQK Sewage Pumps with Cutting Device