A cartridge control valve
A control valve and plug-in technology, applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problems of high cost, poor reliability, complex structure, etc., and achieve low cost, few parts and automation high degree of effect
Active Publication Date: 2020-05-29
邹城市益诚机械有限公司
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Problems solved by technology
However, the structure is very complicated, the reliability is poor, and the cost of two control rotary valves is still high
Method used
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[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0020] like Figure 1~3 Shown is a preferred embodiment of the present invention.
[0021] A cartridge control valve comprising:
[0022] Valve sleeve 1, valve sleeve 1 is provided with oil inlet P, oil return port T, first working oil port A and second working oil port B, and valve sleeve 1 is provided with a second axially open right end and left closed end A channel L1, the first channel L1 has annular first flow groove 101, second flow groove 102, third flow groove 103 and fourth flow groove 104, the first flow groove 101 and the oil return port T is connected, the second flow groove 102 is connected with the second working oil port B, the third flow groove 103 is connected with the oil inlet P, and the fourth flow groove 104 is connected with the first working oil port A;
[0023] The reversing spool 3 is set in the first passage L1 an...
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The invention relates to a plug-in type control valve. The plug-in type control valve is characterized by comprising a valve sleeve, a reversing valve element, a first spring, a second spring and an overflow valve, wherein an oil inlet, an oil outlet, a first working oil hole and a second working oil hole are formed in the valve sleeve; a first channel is arranged on the valve sleeve; the reversing valve element is positioned on the first channel, and separately forms a primary control cavity and a secondary control cavity at the left side and the right side of the reversing valve element; thefirst spring is positioned in the main control cavity for keeping the reversing valve element in a rightward moving trend; the second spring is positioned in the secondary control cavity for keepingthe reversing valve element in a leftward moving trend; and the overflow valve is arranged on the second channel for normally closing the secondary control cavity and the first working oil hole. The plug-in type control valve is compact in structure, is low in processing cost, and can automatically complete automatic control on turnover of a turnover plow.
Description
technical field [0001] The invention belongs to the technical field of valves, in particular to a plug-in control valve. Background technique [0002] In recent years, most areas of my country have begun to promote the application of hydraulic turning plows. Using the reversing plow for plowing has the advantages of no opening and closing ridges, high production efficiency, and energy saving. The hydraulic reversing plow uses the hydraulic system of the tractor to control the left and right plow bodies to operate alternately, so as to achieve the purpose of no opening and closing ridges. like Image 6 As shown, the turning mechanism of the hydraulic turning plow mainly includes a suspension frame 111, a rotating shaft 115, a plow beam 112 and an oil cylinder 113. The rotating shaft 115 is welded on the suspension frame 111, and the plow beam 112 is installed on the rotating shaft 115. Respectively hinged on the suspension frame top and the plow beam 112 with pin shafts, th...
Claims
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IPC IPC(8): F15B13/02
CPCF15B13/021
Inventor 邵立坤
Owner 邹城市益诚机械有限公司