Hydraulic oil high-low voltage switching device of concrete transmission pump
A technology for switching between high and low pressure for concrete delivery pumps, applied in fluid pressure converters, pumps, liquid variable capacity machinery, etc. Simple, highly reliable, and easy-to-manufacture effects
Inactive Publication Date: 2010-02-10
YANGZHOU LIUGONG CONSTR MACHINERY
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Problems solved by technology
[0002] At present, the high and low pressure switching of the hydraulic oil of the concrete delivery pump is mainly composed of a reversing valve, a switching device, and a large number of pipelines connecting the reversing valve and the switching device. Such a high and low pressure switching technology has complex pipeline structure, cumbersome assembly and operation, and low reliability. , easy oil leakage, need to reconnect the pipeline when switching and many other problems
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[0014] The present invention is further described in conjunction with the accompanying drawings and embodiments. The present invention includes a reversing valve, a pipeline, and a main valve block formed by connecting a valve plate, a valve cover, and a sealing ring between the valve plates corresponding to the corresponding working oil holes through bolt connection; The working oil holes A1, A2, B1 and B2 on the valve plate are respectively connected to the oil cylinder through the rubber hose; the oil return hole on the valve plate is connected to the hydraulic oil tank through the rubber hose; the oil inlet hole on the valve plate is connected to the main pump through the rubber hose; The working oil holes C11 and C21 are connected to the reversing valve through the rubber hose. The main valve block, the reversing valve and the pipeline constitute a pumping pipeline, which changes the direction of the valve cover so that the working oil enters the large or small cavity of th...
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The invention relates to a hydraulic oil high-low voltage switching device of a concrete transmission pump, which belongs to the technical field of fluid pressure converters. The device is provided with a main valve block formed by connecting a valve plate for converting corresponding communicated working oil holes, a valve cover and a seal ring between the valve plate and the valve cover throughbolts; the working oil hole A1, the working oil hole A2, the working oil hole A3, the working oil hole B1 and the working oil hole B2 on the valve plate are externally connected with an oil cylinder respectively by a rubber pipe; an oil return hole on the valve plate is externally connected with a hydraulic oil tank by a rubber pipe; an oil inlet hole on the valve plate is externally connected with a main pump by a rubber pipe; the working oil hole C11 and the working oil hole C21 on the valve plate are connected with a reversal valve by rubber pipes; the main valve block, the reversal valve and a pipeline form a pumping pipeline; the direction of the valve cover is converted to lead working oil to enter a big cavity or a small cavity externally connected with the oil cylinder, thereby changing the working pressure of the oil cylinder, realizing high-low voltage pressure switch without disassembling pipe parts, and having convenient operation, high reliability, low cost, simple structure and easy manufacture.
Description
technical field [0001] The invention relates to a high-low pressure switching device for hydraulic oil of a concrete conveying pump, which belongs to the technical field of fluid pressure converters. Background technique [0002] At present, the high and low pressure switching of the hydraulic oil of the concrete delivery pump is mainly composed of a reversing valve, a switching device, and a large number of pipelines connecting the reversing valve and the switching device. Such a high and low pressure switching technology has complex pipeline structure, cumbersome assembly and operation, and low reliability. , Easy to drain oil, need to reconnect the pipeline when switching and many other problems. Contents of the invention [0003] The purpose of the present invention is to provide a high and low pressure switching device for hydraulic oil of concrete delivery pumps, which solves the above-mentioned many shortcomings in the high and low pressure switching of hydraulic oi...
Claims
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IPC IPC(8): F15B3/00F04B15/02
Inventor 廖克斌唐绪文李向军刘滨赵兴明邓振中
Owner YANGZHOU LIUGONG CONSTR MACHINERY