Hydraulic Control Proportional Flow Valve
A proportional flow valve and hydraulic control technology, applied in the direction of valve devices, multi-way valves, fluid pressure actuators, etc., can solve the problems of increased weight, small flow area, small flow capacity, etc.
Active Publication Date: 2019-08-23
JIANHU BADA HYDRAULIC MACHINERY CO LTD
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Problems solved by technology
[0002] Cartridge-type hydraulic control proportional flow valves are used more and more in walking machinery and equipment due to the advantages of small size, easy integration, and precise flow control. However, the cartridge-type hydraulic control proportional flow valves currently on the market have the following disadvantages : Because it is a plug-in design, the flow area is small, the valve pressure drop is large, and the flow capacity is small. At present, in order to increase the flow capacity of the plug-in hydraulic control proportional flow valve and reduce the valve pressure drop under large flow, Generally, the diameter of the hole in the valve body and the diameter of the valve core are increased, which will cause the diameter of the insertion hole of the corresponding valve block to increase, resulting in an increase in the volume, weight, and cost of the overall integrated valve block; and the increase in the diameter of the valve core In order to ensure the sealing when the proportional flow valve is closed, it is necessary to increase the covering amount of the spool, which will cause the control dead zone of the proportional flow valve to increase and the control performance to decrease
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[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0021] The hydraulic control proportional flow valve according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
[0022] like figure 1 and figure 2 As shown, a hydraulically controlled proportional flow valve according to the present invention includes: a first valve casing 1, a valve core 2, a hole plug 3, a cover piece 4, a second valve casing 5, a first spring seat 6, and a second spring Seat 7, piston 8, spring 9.
[0023] Specifically, the first val...
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The invention provides a liquid-controlled proportional flow valve which comprises a first valve shell, a valve core, a hole plug, a cover piece, a second valve shell, a first spring base, a second spring base a piston and a spring, wherein the valve core is switchably arranged between a first position and a second position. The liquid-controlled proportional flow valve according to embodiments ofthe invention is suitable for application in large flow and is compact in volume.
Description
technical field [0001] The invention relates to the technical field of control valves, in particular to a hydraulically controlled proportional flow valve. Background technique [0002] Cartridge-type hydraulic control proportional flow valves are used more and more in walking machinery and equipment due to the advantages of small size, easy integration, and precise flow control. However, the cartridge-type hydraulic control proportional flow valves currently on the market have the following disadvantages : Because it is a plug-in design, the flow area is small, the valve pressure drop is large, and the flow capacity is small. At present, in order to increase the flow capacity of the plug-in hydraulic control proportional flow valve and reduce the valve pressure drop under large flow, Generally, the diameter of the hole in the valve body and the diameter of the valve core are increased, which will cause the diameter of the insertion hole of the corresponding valve block to i...
Claims
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IPC IPC(8): F15B13/02F16K11/065
Inventor 不公告发明人
Owner JIANHU BADA HYDRAULIC MACHINERY CO LTD