The three-day 2026 CIPPE Beijing Petroleum Exhibition has come to a successful close.   At Elephant Machinery's Booth W3-3503, we gained not only enthusiastic attention but also the invaluable trust and affirmation of every visitor.   Highlights Recap: ▪️ Major New Product Launches: The debut of the Mechanical Diaphragm Metering Pump and High Pressure Process Diaphragm Pump received high praise from industry experts. ▪️ Star Products: The reciprocating pump series solutions showcased the core strengths of convenient, reliable, efficient, and intelligent. ▪️ Highlight Moment: The "Flow King" Challenge concluded successfully—thank you to every "Gold Coin Winner" who participated!     Though the exhibition has come to an end, Elephant Machinery’s professional service is just getting started. We look forward to our next in-depth collaboration in the pumping industry! For those who missed the event, feel free to send a private message to schedule a technical consultation.

A diaphragm pump is a positive displacement pump that uses the reciprocating motion of a flexible diaphragm to transport fluids. Its most notable structural feature is the complete isolation of the conveyed medium from the power transmission mechanism.   1. Working Principle The diaphragm undergoes periodic deformation under the action of a driving mechanism (usually electric, hydraulic, or diesel engine), creating volumetric changes inside the pump chamber. When the diaphragm retracts, the pump chamber volume increases and pressure decreases, causing fluid to be drawn in through the inlet check valve. When the diaphragm moves forward, the pump chamber volume decreases and pressure rises, forcing fluid out through the outlet check valve. This reciprocating cycle enables continuous fluid delivery.   2. Advantages Achieves absolutely leak-free operation, making it especially suitable for conveying toxic, hazardous, flammable/explosive, or high-purity media; The pump body does not contaminate the fluid, meeting hygienic requirements for industries such as food, pharmaceuticals, and electronics; Capable of handling fluids containing solid particles, high‑viscosity materials, or shear‑sensitive substances, with a scope of application far exceeding that of traditional centrifugal pumps.     3. Drive Modes Electric diaphragm pump: Provides stable and controllable flow, suitable for continuous operation. Hydraulic diaphragm pump: Delivers high output pressure and is often used in metering applications. Diesel engine diaphragm pump: Ideal for field environments without electrical power supply or where mobile operation is required.   4. Applications Suitable for industries such as oil extraction, petrochemicals, electric power, and chemical engineering; Capable of conveying sewage as well as various corrosive and non-corrosive media; Can be manufactured into specialized pumps such as water injection pumps, pressure testing pumps, and acid/alkali/salt pumps; Can be produced as special pumps such as liquid ammonia pumps, methyl carbamate pumps, polymer injection pumps, and alcohol injection pumps; Covers industrial and agricultural pumps, adaptable to high-temperature and low-temperature operating conditions.     Elephant Machinery has recently launched new products: mechanical diaphragm metering pumps and high pressure process diaphragm pumps. If you have any requirements for reciprocating pumps, please feel free to contact us!