Matrix type multi-channel input/output integrated control valve block

Abstract

The invention discloses a matrix type multi-channel input / output integrated control valve block, which comprises a plurality of input flow channels and a plurality of output flow channels which are arranged in a matrix type cross manner, wherein the input flow channels in each longitudinal row are communicated with the output flow channels in the corresponding transverse row through isolation valves, each output flow channel is separately connected to a corresponding main cylinder and auxiliary cylinder control valve block, the isolation valves arranged in each longitudinal row respectively provide the input flow channels for each variable pump and a medium-high pressure accumulator, and a leading circulating overflow valve is respectively arranged on each input flow channel; the isolationvalves in each transverse row respectively provide the output flow channels for each independent main cylinder and auxiliary cylinder control valve block, and a pipeline pressure relief valve is respectively arrange on each output flow channel, so as to enable the pipeline leading to each main cylinder and auxiliary cylinder control valve block and all variable pumps to be independently depressurized. According to the matrix type multi-channel input / output integrated control valve block, the pressure impact when the isolation valves are switched is effectively reduced, each oil cylinder can share the flow supply of each pump, and any other pump can be replaced on line by when any pump fails.

Description

technical field [0001] The invention relates to a matrix multi-channel input / output integrated control valve block, which belongs to the technical field of metal plastic forming hydraulic presses. Background technique [0002] The hydraulic transmission pump station is the power source of the large die forging hydraulic press and the most important technical heart of the equipment. When working, the huge force and working speed issued by the working cylinder of the hydraulic press are transmitted by the hydraulic pump station. Therefore, the pressure energy, flow rate, and power consumption of the hydraulic pump station must meet the characteristic requirements of different production processes and the economic requirements of equipment operation. [0003] At present, the hydraulic transmission system used in large-scale die forging hydraulic presses generally has the following two methods: [0004] The traditional water pump-accumulator transmission system can only produc...

AI Technical Summary

Problems solved by technology

With such a high installed power, the operating rate and operating efficiency are very low, resulting in increased project investment and increased production and operating costs

[0006] The loading and empty circulation, safety overflow and pressure relief control of each pump in the above transmission mode are controlled by a set of independent pump head valves. Therefore, the number of pump head valves and control pipelines is large, and the pipeline layout is complicated. It occupies a large area; the pump must be matched in advance according to the flow required by different working cylinders in the system, and the flow leading to the control valve block of each working cylinder is isolated by setting a large-diameter isolation valve. Therefore, the pressure shock of the isolation valve switching Larger, complex system and higher cost; once the pump matching each working cylinder fails, other pumps cannot be used as a substitute, and supplying oil to the control valve block of the cylinder will reduce the working speed of the cylinder, so , it is impossible for each working cylinder to share the flow supply of each pump, and the resources of the pumping station are not fully utilized, resulting in a decline in the performance of the entire hydraulic system

Images