Integrated pilot differential pressure control type automatic reciprocating cylinder

Abstract

The invention relates to an integrated pilot differential pressure control type automatic reciprocating cylinder. The integrated pilot differential pressure control type automatic reciprocating cylinder comprises a pneumatic control valve module, an air path connecting plate module and a cylinder module, wherein the pneumatic control valve module is connected with the air path connecting plate module through a screw rod, and the air path connecting plate module is connected with the cylinder module through a screw rod; the cylinder module comprises a cylinder rear cover part, a cylinder body part and a cylinder front cover part, wherein the cylinder rear cover part is provided with a rear cover air path and a rear cover pilot air path, and the cylinder front cover part is provided with a front cover air path and a front cover pilot air path; and the integrated pilot differential pressure control automatic reciprocating cylinder further comprises two contact valves, and the two contactvalves are correspondingly assembled and connected with the rear cover pilot air path and the front cover pilot air path. According to the integrated pilot differential pressure type control automaticreciprocating cylinder, a modular design idea is adopted; when the stroke of the cylinder is lengthened, only the length of an air path connecting plate needs to be lengthened; and when the use formof the cylinder is changed, only the design form of the contact valves in a cylinder cover does not change, the integrated pilot differential pressure control type automatic reciprocating cylinder canbe used for changing any cylinder form, and the product diversity is increased.

Description

technical field [0001] The invention relates to the technical field of a cylinder, in particular to an integrated automatic reciprocating cylinder controlled by a pilot pressure difference. Background technique [0002] With the increasing application of pneumatic systems in the field of automation, the control of traditional pneumatic actuators such as cylinders is generally controlled by solenoid valves (solenoid valves have the advantages of sensitive response and simple pneumatic system). However, in some special chemical industries, such as flammable and explosive filling liquid industries, solenoid valves are not allowed to exist in the gas circuit control system because of potential safety hazards. The action execution of the cylinder is still mechanical or air-controlled. [0003] The reciprocating cylinder of prior art (gas circuit principle is as figure 1 As shown), the action principle is that when the piston rod of the cylinder moves to the front and rear trave...

AI Technical Summary

Problems solved by technology

However, due to the rigid connection with the piston, when a dimensional error occurs in machining or assembly, the valve core 10 is easily pulled away from the position of the positioning mechanism 13 under the force of the piston, and the positioning of the valve core 10 is inaccurate, causing the air circuit on the right side to be misaligned. Inaccurate breath or movement

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