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An electro-hydraulic valve and valve body technology, which is applied in the directions of casting molds, valve details, valve devices, etc., can solve the problems of side hole fracture and deformation, main hole fracture, casting difficulties, etc., to improve casting qualification rate, reduce casting cost, The effect of easy casting
Inactive Publication Date: 2015-07-15
南通华东油压科技有限公司
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At present, electro-hydraulic valve castings have always been difficult to cast. The design of the internal flow channel of the valve body must meet the design requirements, and it must be able to be successfully cast. The main hole is broken during casting, the main hole is bent, and the straightness is greater than 0.6mm. Near the gate Problems such as fracture and deformation of side holes
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[0020] In order to further illustrate the present invention, illustrate below in conjunction with accompanying drawing of description:
[0021] Referring to the accompanying drawings, the body casting of the electro-hydraulic valve includes a valve body 1, a lateral flow channel 2, a flow channel opening 3 and an auxiliary flow channel 9. A horizontal flow channel 2 is designed in the valve body 1, and the two ends of the horizontal flow channel 2 are open. There is a flow channel opening 3, and there are five annular circular grooves in the middle of the transverse flow channel 2, which are the first annular groove 4, the second annular groove 5, the third annular groove 6, the fourth annular groove 7 and the fifth annular groove 8, The first annular groove 4 and the fifth annular groove 8 communicate through the auxiliary flow channel 9, which is located at the upper end of the transverse flow channel 2, and the upper end of the inner side of the flow channel opening at both ...
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Abstract
The invention relates to the field of valve body castings, in particular to an electrohydraulic valve body casting. The electrohydraulic valve body casting comprises a valve body, a horizontal flow passage, flow passage ports and an auxiliary flow passage, the horizontal flow passage is designed in the valve body, both ends of the horizontal flow passage are provided with the flow passage ports, the middle of the horizontal flow passage is provided with five annular grooves, which are a first annular groove, a second annular groove, a third annular groove, a fourth annular groove and a fifth annular groove, the first annular groove and the fifth annular groove communicate with each other via the auxiliary flow passage, the auxiliary flow passage is located over the horizontal flow passage, and the upper ends of the insides of the flow passage ports at both ends of the horizontal flow passage are provided with inclined flow passages. The electrohydraulic valve body casting has the following advantages: the design is simple and advanced, the electrohydraulic valve body casting is convenient to use, cast and maintain, is ingenious, reasonable, safe, energy-saving and structurally simple, can serve as a key part for an automated control execution system, and has a long service life, the casting percent of pass is increased greatly, and the casting cost is reduced.
Description
technical field [0001] The invention relates to the field of valve body castings, in particular to a valve body casting of an electro-hydraulic valve. Background technique [0002] Electrohydraulic valve castings have a wide range of applications and have excellent constant flow and multi-stage control functions. Compared with the diaphragm type, they have the advantages of linear control, uniform response, and small pressure loss. The products of the project are mainly used as key components of automatic control actuators in pipeline storage and transportation of petroleum, chemical industry, metallurgy, electric power, food, etc. The products of this project completely use the American Parker Hannifin drawings for mold design and casting process design. The project products reflect a high international level and have a good development trend. At present, electro-hydraulic valve castings have always been difficult to cast. The design of the internal flow channel of the val...
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