A hydraulic system for reducing noise in waste compactor equipment

By introducing a controller, bypass valve, and throttle valve into the hydraulic system of the waste compactor, the retraction speed of the pusher cylinder can be adjusted in real time, thus solving the impact noise problem between the pusher head and the integrated box in the hydraulic power system, achieving noise reduction and equipment protection.

CN224433001UActive Publication Date: 2026-06-30SHENZHEN DONGFENG AUTOMOBILE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN DONGFENG AUTOMOBILE CO LTD
Filing Date
2025-07-11
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The existing hydraulic power system of garbage compactor cannot effectively control the retraction speed of the pusher cylinder during the return stroke, resulting in a violent collision between the pusher head and the integrated container body, generating significant noise and accelerating equipment wear.

Method used

The controller monitors the retraction pressure of the pusher cylinder in real time. Through the cooperation of the bypass valve and the throttle valve, the hydraulic oil is controlled to flow back to the oil tank, the retraction speed of the pusher is adjusted, the impact noise is reduced, and the retraction speed is precisely controlled by the throttle valve.

Benefits of technology

It effectively reduces the impact noise between the pusher and the integrated box, avoids excessive wear and tear on the equipment, and ensures work efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224433001U_ABST
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Abstract

This application discloses a hydraulic system for reducing noise in waste compaction equipment, including an oil tank, a hydraulic pump, a pusher cylinder, a first integrated valve plate, a pressure sensor, and a controller. The first integrated valve plate includes a first solenoid valve, a second solenoid valve, a bypass valve, and a throttle valve. The oil ports P of the first and second solenoid valves are respectively connected to the hydraulic pump. The oil port B of the first solenoid valve is connected to the rodless chamber of the pusher cylinder. The oil port B of the second solenoid valve is connected to the oil port B of the bypass valve. The rod chamber of the pusher cylinder is connected to the oil port B of the bypass valve. The oil port T of the bypass valve is connected to the inlet of the throttle valve. The outlet of the throttle valve is connected to the oil tank. When the controller detects that the retraction pressure value of the pusher cylinder exceeds a preset pressure value, it controls the bypass valve to open. When the retraction pressure of the pusher cylinder exceeds the preset pressure value, this application will promptly control the bypass valve to open, allowing some of the hydraulic oil in the pusher cylinder to flow back into the oil tank, thereby reducing the retraction speed of the pusher and thus reducing the noise of the impact between the pusher and the main body of the integrated box.
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