Rapid water filling system for hydraulic press and control method thereof

Abstract

The invention discloses a rapid water filling system for a hydraulic press. The rapid water filling system comprises a hydraulic driving system, a water supplementing system and a water-filling and air-exhausting system, wherein the hydraulic driving system comprises a hydraulic oil source, a hydraulic control valve and a hydraulic cylinder; the water supplementing system comprises a water pump, afilter, a first check valve, a first pneumatic control valve, a high-level water tank and a second check valve; and the water-filling and air-exhausting system comprises a water filling tank, a pressure relay, a second pneumatic control valve, a third check valve, a water column dispersion plate and a third pneumatic control valve. In addition, the invention also discloses a control method for the rapid water filling system of the hydraulic press. The rapid water filling system provided by the invention has large water filling capacity and rapid air exhausting speed, greatly shortens the timeof water filling, and greatly improves the production rhythm of the hydraulic press; the rapid water filling system provided by the invention is driven by the hydraulic cylinder for water filling, soparameters like the flow rate and pressure of water filling are more stable and controllable; and the rapid water filling system provided by the invention adopts a PLC fully-automatic control hydraulic press to complete the process of rapid water filling, is simple in operation and convenient in maintenance, reduces the labor intensity of a worker, and increases production efficiency.

Description

technical field [0001] The invention relates to the technical field of cast iron pipeline processing equipment, in particular to a rapid water filling system for a hydraulic press and a control method thereof. Background technique [0002] The hydraulic press is a machine that uses oil-water balance control to perform hydrostatic pressure tests on steel pipes. It mainly consists of the following parts: steel pipe transmission device, water system, oil system and control system. The hydraulic press equipment is used to test the pressure bearing capacity of the cast pipe, which plays a vital role in the safe use of the cast pipe in the future. Each cast pipe must be tested by a hydraulic press before it can be put into the market. [0003] With the acceleration of the production rhythm of the cast pipe production line, the hydraulic press has gradually become the restrictive link of the production rhythm of the entire production line, especially the low-pressure water fillin...

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Problems solved by technology

[0003] With the acceleration of the production rhythm of the cast pipe production line, the hydraulic press has gradually become the restrictive link of the production rhythm of the entire production line, especially the low-pressure water filling takes a long time, which seriously affects the entire process time of the hydraulic press and reduces the production efficiency.

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