A manual hydraulic pump station is a compact and portable device that converts mechanical energy into hydraulic energy through manual operation. It is widely used in various industrial, construction, and maintenance applications where electric or motor-driven pumps are not available or practical. By combining with oil cylinders and specialized tools, this system can perform a wide range of tasks such as lifting, bending, straightening, shearing, riveting, assembly, disassembly, and even military or construction-related operations. The key features of a manual hydraulic pump include high pressure output, portability, ease of use, and versatility. Its small size makes it ideal for on-site operations, while the manual operation ensures control and reliability in critical situations.
**Main Structure and Function of the Manual Hydraulic Pump**
A manual hydraulic pump consists of several essential components that work together to generate and regulate hydraulic pressure. These parts include: 1) the pump body; 2) the handle section; 3) the hose assembly; 4) the oil reservoir; and 5) the base or seating unit. 1. **Pump Body**: The core component of the pump, the pump body contains the high-pressure and low-pressure working chambers. It also includes two check valves to prevent backflow of pressurized oil, a high-pressure relief valve (safety valve), a low-pressure valve, an unloading valve, and an oil inlet. These components are interconnected to ensure smooth operation. The low-pressure and high-pressure valves regulate the pressure at 1 MPa and 63 MPa, respectively. The two steel balls at the inlet serve as check valves, allowing oil to flow in one direction only. After completing the task, the unloading valve opens, returning the pressurized oil to the reservoir to release the pressure. 2. **Handle Section**: This part consists of a pressure rod and a handle. The handle is connected to the pump body via two pins, which drive the plunger during operation. The user applies force to the handle, which in turn pushes the plunger back and forth, generating hydraulic pressure. The handle has an M20×1.5 threaded hole for attaching the pressure rod, allowing for vertical or horizontal positioning depending on the user’s convenience. 3. **Hose Assembly**: The hose connects the pump to the hydraulic cylinder or tool. When not in use, the hose should be disconnected from the cylinder, and both ends should be covered with rubber caps or connectors to prevent dust and contaminants from entering the system. This helps maintain the efficiency and longevity of the pump. 4. **Oil Reservoir and Air Venting System**: An air venting device is typically installed on the rear of the pump or on the oil tank. During operation, the air screw must be loosened to prevent vacuum formation in the reservoir, which could hinder normal function. After use, the air screw should be tightened to seal the system. A hook is also provided on the back end for carrying the pump securely, making it easier to transport and store. This detailed structure ensures that the manual hydraulic pump remains reliable, efficient, and easy to maintain in a variety of environments. Whether used in a workshop, field, or emergency situation, it offers a dependable solution for hydraulic power needs.
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