A pressure-maintaining hydraulic control overflow valve
An overflow valve and hydraulic control technology, applied in safety valves, balance valves, valve devices, etc., can solve problems such as high energy consumption, inability to recycle overflow liquid into accumulators for storage, and large installed capacity
Inactive Publication Date: 2016-03-23
XIAN TIANYU HEAVY IND
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Problems solved by technology
Since the second half of the 20th century, with the rapid development of oil pressure technology and its components, forging hydraulic presses have adopted more and more oil pump direct drive systems without high-pressure oil accumulators, but in order to overcome the existing installed capacity of single oil pump direct drive systems Large size, low work efficiency, high energy consumption and many other disadvantages, the oil pump-accumulator transmission system in forging hydraulic presses began to adopt
[0003] Although the above-mentioned dual transmission system of the forging hydraulic press has many advantages, under the existing technical conditions, if a high-pressure pump is used for direct transmission of large flow, it will inevitably lead to excessively high liquid pressure in the system. In order to keep the liquid pressure in the system in balance Steady state, the conventional technical means is to install an overflow valve in the system to discharge the liquid in the system to the low-pressure oil tank of the system through the overflow valve, and it is impossible to directly recover the overflow liquid through the overflow valve to the accumulator for storage , resulting in the loss of high-pressure fluid in the transmission system and the waste of energy
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[0027] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.
[0028] See attached figure 1 , 2 , a pressure-maintaining hydraulic control overflow valve, comprising a valve core 1, a valve body 2, an accumulator 3 and a pressure instrument 4, characterized in that: the valve core 1 is set in the inner cavity of the valve body 2, and the valve body 2 is externally connected with an accumulator 3, and a pressure gauge 4 is arranged at the upper end of the spool 1.
[0029] The valve body 2 is in the shape of a square column, and its outer wall is provided with an attachment flange 5, an air release valve and unequal angle steel 7;
[0030] The accumulator 3 is fixed upright by the accumulator bracket 8 and the fastening hoop 9;
[0031] The steel pipe 10 is fixed by the unequal angle edge steel 7 provided...
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The invention discloses a pressure-maintaining hydraulic controlled overflow valve, which comprises a valve core, a valve body, an energy accumulator and a pressure instrument, wherein the valve core is arranged in an inner cavity of the valve body; the energy accumulator is connected outside the valve body; and the pressure instrument is arranged at the upper end of the valve core. The pressure-maintaining hydraulic controlled overflow valve is mainly applied to a double transmission system for large and medium hydraulic forging presses, particularly a double transmission system for hydraulic forging presses. The pressure-maintaining hydraulic controlled overflow valve has the characteristics that the liquid pressure in the system can be balanced and stabilized in the high-flow direct transmission process of the double transmission system, and overflow liquid in the system can be directly recovered to the energy accumulator of the system to be stored and utilized through the pressure-maintaining hydraulic controlled overflow valve, so that the energy is recovered and recycled.
Description
technical field [0001] The invention belongs to the technical field of forging hydraulic press transmission systems, and in particular relates to a pressure-maintaining hydraulic control overflow valve in a forging hydraulic press pump-accumulator transmission system. technical background [0002] Since the 1940s and 1950s, the vast majority of large and medium-sized forging hydraulic presses have adopted a water pump-accumulator transmission system, which consists of three main parts: hydraulic presses, high-pressure water pumps, and high-pressure water accumulators. . Since the second half of the 20th century, with the rapid development of oil pressure technology and its components, forging hydraulic presses have adopted more and more oil pump direct drive systems without high-pressure oil accumulators, but in order to overcome the existing installed capacity of single oil pump direct drive systems Large size, low work efficiency, high energy consumption and many other di...
Claims
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IPC IPC(8): B21J9/20F16K17/00
CPCY02P70/10
Inventor 王佐栋
Owner XIAN TIANYU HEAVY IND