SU1486628A1 - Pneumatic system - Google Patents

Description

The invention allows to simplify the design of the pneumatic system by eliminating insufficiently reliable pneumatic valves with a device for controlling the response time. Pneumatic capacitors (PE) 7,8,9 are connected through adjustable chokes 10, 11, 12, 13 to the corresponding lines of pneumatically controlled rever 2 ·

distribution valves (P) 3,4. The cavity (P) of pneumatic control P 3 is connected to the pressure source through P 1,2 and to the line of one of the auxiliary P 5 through throttles 10,13 and PE 7, P of the pneumatic control P 4 through PE 8 connected to the line P 6 and to the connection line of one P of the pneumatic cyclinder 17 with the P 3 line through the choke 11. P of the pneumatic control P 5,6 are made with the same effective area. One of the pneumatic control devices P 5,6 is connected to the connection line of the other P of the pneumatic cylinder 17 with the P 3 line, the other P is connected to the PE 9 and through the throttle 12 to the connection line P of the pneumatic cylinder 18 with the P 4 line. PE 7,8,9 are equipped with indicators 14,15,

16 pressure. 1 il.

5 C 1486628

1486628

The invention relates to mechanical engineering.

The purpose of the invention is to simplify the design by eliminating insufficiently reliable pneumatic valves with devices for controlling the response time.

The drawing shows a diagram of the pneumatic system.

The pneumatic system contains two successively installed control valves 1 and 2, two reversing valves 3 and 4, two auxiliary valves 5 and 6, main air capacity 7, additional pneumo capacity 7 and 9, throttle 10-13, pressure indicators 14.15 and 16 and two consistently controlled pneumatic cylinders 17 and 18.

Pneumatic control system works as follows.

When simultaneously pressing the start buttons of the control valves 1 and 2, they are switched and the pressure source enters the control chamber of the first rever-. distributor 3 and switches it. At the same time, the pressure source through the throttle 10 enters the main pneumatic tank 7 and fills it to a pressure value that prevents spontaneous switching of the distributor 3 to its original position (according to the drawing) under the influence of the pressure source, which is constantly in the smaller control cavity of the distributor 3, and the indicator 14 pressure. The operator can remove his hands from the start buttons of the valves 1 and 2. This is a safe two-handed switching on of the pneumatic cylinder 17. After switching the first reversing valve 3, the pressure source enters the upper (according to the drawing) cavity of the pneumatic cylinder 17, the working body of which makes a working stroke.

At the same time, the pressure source through the distributor 3 and the throttle 11 enters the air capacity 8. After it is filled to a certain pressure, the second reversing valve 4 _C is switched. This activates the pressure indicator 15. The pressure source through the valve 4 begins to flow into the corresponding cavity of the pneumatic cylinder 18, the working body of which makes

working stroke. At the same time, the pressure source through the second reversing valve 4 and the throttle 12 enters the air capacity 9. After filling it to a certain pressure, the auxiliary valves 5 and 6 switch, while the pneumatic capacity 8 and the control space of the valve 4 are connected to the valve through the valve 6, causing the valve 4 switches to the original (according to the drawing) position, the pneumatic cylinder 18 performs the reverse. At the same time, the pneumatic capacity 7 through the throttle 13 and the valve 5 is also connected to the outlier, as a result of which the reversing valve 3 is switched to the original one.

(according to the drawing) position, the pneumatic cylinder 17 makes-reverse. The entire system returns to its original (according to the drawing) position.

Claims (1)

Claim Pneumatic system containing successively installed control valves, pneumatically controlled reversible and two auxiliary valves, pneumatic cylinders, pneumatic tanks connected via adjustable chokes to the corresponding lines of pneumatically controlled reversing valves, pressure indicator, pressure source and relief, characterized in that, in order to simplify the design, the cavity pneumatic control of the first pneumatic control reversing distributor is connected to the pressure source through a control distributors and to the corresponding line of one of the auxiliary distributors through sequentially installed adjustable throttle and pneumatic capacity, the pneumatic control cavity of the second reversing distributor through the pneumatic capacitance to the corresponding line of another auxiliary distributor and to the line of connection of one of the cavities of the first pneumatic cylinder with the corresponding line of the first pneumatic control valve through an adjustable throttle control cavities of auxiliary distributors s with the same effective area, and one 1486628 They are connected to the connecting line of the other cavity of the first pneumatic cylinder with the corresponding line of the first pneumatic control reversing distributor, and the other to the pneumatic capacity and through an adjustable choke to the line connecting one of the cavities of the second pneumatic cylinder with the corresponding line of the second pneumatically controlled reversing valve, the pneumatic reservoir is equipped with pressure indicators.