Multi-mode double-oil-way electric-hydraulic proportional overflow speed regulating valve
An electro-hydraulic proportional and dual-oil circuit technology, which is applied in the field of hydraulic systems, can solve the problems of low integration, large throttling loss, and single function, and achieve a high integration, sensitive speed regulation response, and reasonable overall layout. Effect
Active Publication Date: 2016-03-02
RIZHAO HAIZHUO HYDRAULIC
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Problems solved by technology
[0002] The speed regulating valve is an important component in the speed regulating circuit. Its working performance directly affects the stability of the entire hydraulic system. The flow area and the method of controlling the pressure difference before and after the orifice realize the speed regulation by changing the flow rate entering the actuator, but the existing speed control valve works through multiple components, the degree of integration is low, and it can only work in a single oil circuit , the function is single, and due to the large throttling loss and serious heating problems, it is only suitable for occasions with small power
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[0042] The present invention will be further described below in conjunction with the drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those of ordinary skill in the art can realize that the described embodiments can be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not used to limit the scope of protection of the claims.
[0043] Such as figure 1 with figure 2 As shown, the multi-mode dual oil circuit electro-hydraulic proportional overflow speed control valve includes a six-position five-port electro-hydraulic proportional valve. The six-position five-port electro-hydraulic proportional valve includes a valve body 1 in which an axial direction is installed. The movable valve stem 2 is provided with multiple logic oil grooves i...
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The invention discloses a multi-mode double-oil-way electric-hydraulic proportional overflow speed regulating valve. The multi-mode double-oil-way electric-hydraulic proportional overflow speed regulating valve comprises a six-position five-port electric-hydraulic proportional valve, wherein the six-position five-port electric-hydraulic proportional valve comprises a valve body; a valve rod which moves in the axial direction is mounted in the valve body; seven logical oil grooves are formed in the valve body; three logical oil grooves are formed in the valve rod; a multi-section throttling device is arranged on the valve rod; the seven logical oil grooves in the valve body, the three logical oil grooves of the valve rod and the multi-section throttling device have strict logics; through the logics, a multi-section throttling speed regulating oil way is formed; an electromagnetic control mechanism which drives the valve rod to move is mounted at one end of the valve body of the six-position five-port electric-hydraulic proportional valve; a valve rod returning device is mounted at the other end of the valve body of the six-position five-port electric-hydraulic proportional valve; and two electric-hydraulic proportional overflow valves which are communicated with the throttling speed regulating oil way and are used for relieving pressure are mounted on the valve body of the six-position five-port electric-hydraulic proportional valve. The speed regulating valve disclosed by the invention is high in integration degree, sensitive in speed regulating response, compact in structure, reasonable in integrated layout, convenient to mount and maintain and reliable in sealing performance.
Description
Technical field [0001] The invention relates to the technical field of hydraulic systems, in particular to a multi-mode dual oil circuit electro-hydraulic proportional overflow speed regulating valve. Background technique [0002] The speed control valve is an important component in the speed control circuit, and its performance directly affects the stability of the entire hydraulic system. At present, the speed control valve on the market is mostly composed of a fixed differential pressure reducing valve and a throttle valve in series, by changing the orifice The flow area and the method of controlling the pressure difference between the front and rear of the orifice can change the flow into the actuator to adjust the speed, but the existing speed control valve works through multiple components, the degree of integration is low, and it can only work in a single oil circuit. , Single function, and serious heat generation due to large throttling loss. It is only suitable for occas...
Claims
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IPC IPC(8): F15B13/02F16K11/07
CPCF15B13/02F15B13/022F16K11/0708
Inventor 李瑞川
Owner RIZHAO HAIZHUO HYDRAULIC