Pneumatic control valve special for gas-liquid pressure cylinder and gas-liquid pressure cylinder
A technology of booster cylinder and air control valve, applied in fluid pressure converters, fluid pressure actuating devices, servo motor components, etc., can solve the problem of inability to meet the needs of gas-liquid booster cylinders, short service life, air leakage, etc. question
Active Publication Date: 2016-05-04
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology
This kind of air control valve has the following defects: 1), short service life and air leakage; 2), no sealing ring is provided, only relying on gap sealing, it is difficult to disassemble, once a problem occurs, it is difficult to repair, greatly shortening the entire booster cylinder 3) Due to the limitation of the special structure of the gas-liquid booster cylinder, the above-mentioned air control valve cannot meet the needs of the gas-liquid booster cylinder
Method used
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[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.
[0033] like Figure 1 to Figure 3 As shown, a special air-controlled valve for gas-liquid pressurized cylinders includes a valve disc, a valve core and a limit copper block 12 arranged sequentially from top to bottom; the valve disc includes a base body section 1 and an inner cavity section 9, and the inner cavity The top of the section 9 is fixedly connected with the base section 1, the bottom end of the inner cavity section 9 is open, and the inner cavity section 9 is provided with an inner cavity 4 for the valve core to move back and forth, and the upper part of the inner cavity section 9 is provided with an inner cavity 4 that is connected with the inner cavity 4. The connected disc control air hole 5, the lower part of the inner cavity section 9 is provided with a dis...
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The invention discloses a pneumatic control valve special for a gas-liquid pressure cylinder. The pneumatic control valve comprises a valve clack, a valve element and a limiting copper block, wherein the valve clack comprises a base body section and an inner cavity section, an inner cavity allowing the valve element to move back and forth is formed in the inner cavity section, a valve clack control air hole communicated with the inner cavity is formed in the upper portion of the inner cavity section, and a valve clack work air hole communicated with the inner cavity is formed in the lower portion of the inner cavity section; the valve element comprises an upper piston and a lower piston, the effective action area of the upper piston is smaller than that of the lower piston, and the upper piston makes sealed contact with the inner wall of the inner cavity all through the working process. The invention further discloses a gas-liquid pressure cylinder. The gas-liquid pressure cylinder comprises a rear end cover and the pneumatic control valve, wherein a through hole is formed in the rear end cover, and the valve clack, the valve element and the limiting copper block are arranged in the through hole from top to bottom in sequence. The pneumatic control valve can be switched on automatically after a hydraulic piston rod of the pressure cylinder makes contact with a workpiece, automatic conversion from the speedy prepressing stroke to the boost pressing stroke of the pressure cylinder is achieved, and safety and reliability are realized.
Description
technical field [0001] The invention relates to a booster cylinder, in particular to a special air control valve for a gas-liquid booster cylinder and a gas-liquid booster cylinder. Background technique [0002] The gas-liquid booster cylinder is widely used in stamping equipment and other occasions that require a large thrust. The built-in special air control valve of the gas-liquid booster cylinder is the control component that controls the booster cylinder from the fast-forward pre-pressing stroke to the booster punching stroke. . [0003] Patent ZL200810019120.0 discloses an air-operated valve, which includes a valve body, a valve core slidably arranged in the inner cavity of the valve body, a front end cover and a rear end cover respectively sealingly fitted at both ends of the valve body, and the valve body There are fluid inlets and outlets respectively on the two opposite side walls, air holes are respectively opened on the front end cover and the rear end cover, th...
Claims
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IPC IPC(8): F15B13/04F15B3/00
CPCF15B3/00F15B13/0402F15B2013/041
Inventor 高丽于永进王明艳周虹戴向云
Owner SHANDONG UNIV OF SCI & TECH