Leak-proof blowback structure of vacuum generator
By setting up a leak-proof mechanism on the intake pipeline of the vacuum generator, the problems of positive pressure gas loss and poor vacuum breaking effect of suction cup port during the backblowing process are solved, and the effective utilization of gas and good vacuum breaking effect of suction cup port are achieved.
Patent Information
- Application Number
- CN202421884150.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-06
AI Technical Summary
During the backblowing process of the vacuum generator, positive pressure gas flows into the exhaust port through the pipe, resulting in gas loss and poor vacuum breaking effect of the suction cup port.
A leak-proof and back-blowing structure of a vacuum generator is designed. By setting up a leak-proof mechanism on the intake pipeline, the valve core is pushed to close the opening of the leak-proof area by using positive pressure gas to prevent the return positive pressure gas from entering the exhaust port.
It effectively avoids the loss of positive pressure gas, ensures the vacuum breaking effect of the suction cup port, and improves the efficiency of the backblowing process.
Smart Images
Figure CN222910378U_ABST
Abstract
Claims
1. A vacuum generator anti-leakage backflush structure, characterized in that: The vacuum generator comprises a positive pressure air intake mechanism, a back-blowing mechanism, an anti-leakage mechanism, an air inlet, an exhaust port, and a suction cup port, wherein the positive pressure air intake mechanism is respectively connected to the air inlet, the exhaust port, and the suction cup port, the back-blowing mechanism is respectively connected to the positive pressure air intake mechanism and the suction cup port, and the anti-leakage mechanism is arranged in the positive pressure air intake mechanism; the positive pressure air intake mechanism comprises an air intake guide solenoid valve, an air intake pipeline, an air intake seat valve, and an exhaust pipe, wherein the air intake pipeline is respectively connected to the air inlet, the exhaust pipe, and the suction cup port, and the exhaust pipe The air inlet valve is arranged at the air exhaust port, and the air inlet guide solenoid valve is respectively connected with the air inlet port and the air inlet pipe at the upper end of the air inlet seat valve; the back-blowing mechanism comprises a back-blowing guide solenoid valve, a back-blowing pipe, and a back-blowing seat valve, the back-blowing pipe is respectively connected with the air inlet pipe and the suction cup port, the back-blowing valve seat is arranged on the back-blowing pipe, and the back-blowing guide solenoid valve is respectively connected with the air inlet end of the back-blowing pipe and the back-blowing pipe at the upper end of the back-blowing valve seat; the anti-leakage mechanism is arranged on the air inlet pipe between the exhaust pipe and the suction cup port.
2. The vacuum generator anti-leakage backflush structure according to claim 1, characterized in that: The air intake pipeline includes an air intake part, a guide part, a front air intake pipe, an anti-leakage area, and a rear air intake pipe; the air intake part is respectively connected with the air intake port, the exhaust pipe, and the back-blowing pipeline, and an air intake seat valve is arranged in the air intake part; lateral air holes are opened on the exhaust pipe, the lateral air holes are connected with the guide part, the guide part is connected with the front air intake pipe, the front air intake pipe is connected with the anti-leakage area, an anti-leakage mechanism is arranged in the anti-leakage area, the anti-leakage area is connected with the rear air intake pipe, and the rear air intake pipe is connected with the suction cup port; the air intake port, the air intake part, the air intake seat valve, and the exhaust pipe form a positive-pressure exhaust passage, and the suction cup port, the rear air intake pipe, the anti-leakage area, the front air intake pipe, and the lateral air holes form a negative-pressure passage.
3. The anti-leakage backflush structure of the vacuum generator according to claim 2, characterized in that: The air intake guide solenoid valve is provided with an air intake port and an air intake guide solenoid valve outlet. The air intake port of the air intake guide solenoid valve is connected to the air intake pipe of the air intake guide solenoid valve, the air outlet of the air intake guide solenoid valve is connected to the air outlet pipe of the air intake guide solenoid valve, the air intake pipe of the air intake guide solenoid valve is connected to the air intake port, and the air outlet pipe of the air intake guide solenoid valve is connected to the top of the air intake part. The opening and closing of the positive pressure exhaust channel is controlled by the cooperation between the air intake guide solenoid valve and the air intake seat valve.
4. The anti-leakage backflush structure of the vacuum generator according to claim 2, characterized in that: A Laval nozzle is provided at the inlet of the exhaust pipe, the upper end of the Laval nozzle extends into the air intake part, the upper end of the Laval nozzle contacts the lower end of the air intake seat valve, and the air intake port, the air intake part, the air intake seat valve, the Laval nozzle and the exhaust pipe form a positive pressure exhaust channel.
5. The vacuum generator anti-leakage backflush structure according to claim 3, characterized in that: The backblowing pipeline includes a front backblowing pipe, a rear backblowing pipe, and a backblowing closed area. The two ends of the front backblowing pipe are respectively connected to the air inlet and the bottom of the backblowing closed area. A backblowing seat valve is arranged in the backblowing closed area. The two ends of the rear backblowing pipe are respectively connected to the backblowing closed area and the suction cup port. The front backblowing pipe, the backblowing closed area, the backblowing seat valve, the rear backblowing pipe, and the suction cup port form a backblowing channel.
6. The anti-leakage backflush structure of the vacuum generator according to claim 5, characterized in that: The back-blowing guide solenoid valve is provided with an air inlet of the back-blowing guide solenoid valve and an air outlet of the back-blowing guide solenoid valve. The air inlet of the back-blowing guide solenoid valve is connected to the air inlet pipe of the back-blowing guide solenoid valve, the air outlet of the back-blowing guide solenoid valve is connected to the air outlet pipe of the back-blowing guide solenoid valve, the air inlet pipe of the back-blowing guide solenoid valve is connected to the front back-blowing pipe, and the air outlet pipe of the back-blowing guide solenoid valve is connected to the top of the back-blowing closed area; the opening and closing of the back-blowing channel is controlled by the cooperation of the back-blowing guide solenoid valve and the back-blowing seat valve.
7. The anti-leakage backflush structure of the vacuum generator according to claim 6, characterized in that: The anti-leakage mechanism is an anti-leakage seat valve, which includes a valve cover, a valve body, a valve core, a compression spring, and an anti-leakage air channel. A valve cover is arranged on the outside of the valve body, a valve core is arranged in the valve body, the front end of the valve core extends to the outside of the valve body, the front end of the valve core is aligned with the opening of the anti-leakage area, the top of the compression spring is placed between the valve core and the bottom surface of the inner cavity of the valve body, an anti-leakage air channel is arranged on the valve body, one end of the anti-leakage air channel is connected to the rear air intake pipe, and the other end of the anti-leakage air channel is in contact with the rear end of the valve core; a part of the positive pressure gas is guided through the rear air intake pipe and the anti-leakage air channel to push the valve core to close the opening of the anti-leakage area.