Electro-hydraulic proportional valve
A technology of electro-hydraulic proportional valves and spools, which is applied to valve details, valve devices, and valve housing structures, can solve the problems of zero-position offset of installed spools and lower precision of electro-hydraulic proportional valves, and achieve the goal of improving control accuracy Effect
Active Publication Date: 2020-05-19
河北启思教育科技有限责任公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide an electro-hydraulic proportional valve to solve the technical problem in the prior art that the zero position of the spool shifts due to errors in installation and manufacturing, resulting in a decrease in the accuracy of the electro-hydraulic proportional valve.
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[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0035] see figure 1 and figure 2 , the electro-hydraulic proportional valve provided by the present invention will now be described. An electro-hydraulic proportional valve, including a valve body 1, a valve core 2, a connecting block 3, a casing 4, a moving coil 5, a circuit board 6 and a reset mechanism 7; the valve body 1 is provided with a plurality of flow channels; the valve core 2 slides It is installed in the valve body 1 to change the on-off state of each flow channel; the connection block 3 is fixed on one end of the valve body 1; the connection block ...
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The invention provides an electro-hydraulic proportional valve, and belongs to the technical field of hydraulic transmission. The electro-hydraulic proportional valve comprises a valve body, a valve core, a connecting block, a case, a moving ring, a circuit board and a reset mechanism, wherein the valve core is glidingly arranged in the valve body; the connecting block is fixedly arranged at one end of the valve body; an installing space is arranged on the connecting block; the case is fixedly arranged at one end, far away from the valve body, of the connecting block; a magnet is arranged in the case; the moving ring is glidingly arranged in the case and is arranged at the outer side of the magnet in a sleeving way; one end of the moving ring is provided with a fixing end part which extends into the installing space and is fixedly connected with the valve core; a protruding part protruding and extending out of one side of the case is arranged on the circuit board; and the reset mechanism is fixedly arranged at the other end of the valve body, and is elastically connected with the valve core. The electro-hydraulic proportional valve provided by the invention has the advantages thatby starting the reset mechanism, the valve core is regulated to slide in the valve body to a zero position; in addition, the normal movement of the valve core in the valve body cannot be influenced byelastic connection of the reset mechanism and the valve core; errors generated in the manufacturing and assembling processes are eliminated; and the control precision of the electro-hydraulic proportional valve is improved.
Description
technical field [0001] The invention belongs to the technical field of hydraulic transmission, and more specifically relates to an electro-hydraulic proportional valve. Background technique [0002] The electro-hydraulic proportional valve has strong anti-pollution ability and low price, and has gradually replaced the application of servo valves in industrial production. Shifting, resulting in greatly reduced accuracy and other characteristics of the electro-hydraulic proportional valve, serious production accidents will occur. Contents of the invention [0003] The purpose of the present invention is to provide an electro-hydraulic proportional valve to solve the technical problem existing in the prior art that the zero position of the spool shifts due to errors in installation and manufacturing, resulting in a decrease in the accuracy of the electro-hydraulic proportional valve. [0004] In order to achieve the above object, the technical solution adopted by the present...
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Patent Timeline
Login to View More IPC IPC(8): F16K31/08F16K27/02F15B13/044
CPCF15B13/0446F16K27/029F16K31/082
Inventor 肖斌张文灼郑海鹏张鹏跃
Owner 河北启思教育科技有限责任公司