Application and improvement of the hottest electro

2022-08-17
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Use and improvement of electronic fixed double nozzle cement packaging machine (Part 2)

2.2 simplified pneumatic control

the air supply from the air nozzle of the original impeller box is controlled by the two position three vent control valve (for example, according to the needs of domestic magnetic materials and other high filling materials, figure 1). It is found that its seal has poor durability in use, resulting in more failures of the two position three vent control valve. Because the air consumption of the air nozzle is very small, without adding any control elements, the two position three-way control valve is omitted, and the air supply pipe of the air nozzle is connected to the outlet B of the unused solenoid valve Y2 (as shown in Figure 2), which simplifies the pneumatic control line and improves the reliability. After the transformation, the failure rate of the pneumatic control system is significantly reduced in the process of changing the spring

Figure 1 pneumatic control diagram of corresponding software control system should be provided by the original manufacturer

y1, Y2 - two position five way solenoid valve; Z - three position cylinder; P - air supply pipe; K - two position three vent control valve; V - air storage tank; H - throttle valve; T - air nozzle; D-check valve

Figure 2 pneumatic control diagram after improvement

2.3 increase the fit clearance between the support pin at the tail of the three position cylinder and the copper sleeve

the fit clearance between the support pin at the tail of the original three position cylinder and the copper sleeve is small, and the rear axle pin rusts after using for a period of time; In addition, there is dust accumulation. When the three position cylinder is working, its cylinder body rotation is not flexible, so the ash gate plate cannot be opened and closed from time to time. When turning the axle pin, the fitting clearance was enlarged to 0.5mm, and no fault occurred after improvement

source: China Automation

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