SGZ-III Type 300m Drilling Machine Operation Dedicated Valve

I. Product Introduction

The SGZ-III drilling machine control valve is a dedicated combined hydraulic control valve, suitable for 300m drilling machines in hydropower and coal industry applications. It belongs to the drilling machine dedicated hydraulic control valve group. The valve body adopts a three-piece combined integrated structure, assembled from a safety valve, relief valve, and sequence valve. The whole machine gear operation is smooth, with flexible handle action at each gear position and reliable operation, suitable for Normalization control operations of drilling machines in Field Industrial and Mining. The hydraulic valve general principle relies on internal movable valve core components to open/close and throttle pipeline channels, controlling hydraulic airflow and bulk material medium flow, completing pipeline sealing and flow regulation operations.

II. Rated Pressure Regulation Technical Parameters

1. Safety valve regulation pressure: 2MPa;

2. Relief valve regulation pressure: 3MPa;

3. Sequence valve regulation pressure: 4MPa.

III. Functions of Combined Valves

1. Safety valve: Controls the pressure upper limit of the drilling machine hydraulic circuit, relieves pressure when over-pressured, and protects drilling machine hydraulic components from pressure impact;

2. Relief valve: Stabilizes the basic oil pressure of the drilling machine system, balances circuit pressure, and avoids oil pressure fluctuations affecting drilling machine operation accuracy;

3. Sequence valve: Controls the timing of multi-channel hydraulic processes of the drilling machine, executes hydraulic actions sequentially according to preset pressure, ensuring orderly linkage of drilling machine processes.

IV. Core Product Features

1. Three-piece integrated structure, high valve group integration, suitable for drilling machine in-situ installation, occupying less equipment space;

2. Handle operation feel is smooth, gear switching without sticking, manual operation is labor-saving, suitable for Field drilling machine high-frequency operation;

3. Three-channel pressure graded regulation, valve pressure regulation zones are clearly defined, each performing its own duties, suitable for 300m drilling machine dedicated hydraulic working conditions;

4. Suitable for harsh Mining conditions, strong dust resistance and oil pressure fluctuation adaptability, suitable for coal mine and hydropower Field Industrial drilling operations;

5. Integrated valve group facilitates unified maintenance, three-piece valves are independently adjustable, fault inspection and pressure calibration are convenient and efficient;

6. Adapts to hydraulic valve general valve core regulation structure, stable opening/closing response, medium suitable for drilling machine dedicated hydraulic working oil.

V. Application Scope

Dedicated for 300m drilling machine hydraulic systems in hydropower and coal industries, integrating drilling machine hydraulic pressure relief, pressure stabilization, and process timing control, controlling drilling machine feed, rotation, limit and other hydraulic execution actions, suitable for underground and open-pit mine drilling construction conditions.

VI. Usage Precautions

1. Pressure regulation must strictly follow rated values: safety valve pressure no more than 2MPa, relief valve pressure no more than 3MPa, sequence valve pressure no more than 4MPa, to avoid over-pressure damage to the valve group;

2. Daily operation should smoothly move the control handle, violent gear shifting is prohibited, to prevent handle connecting rod deformation affecting gear precise alignment;

3. Before drilling machine operation, verify the three-channel valve pressure values, fine-tune pressure according to drilling load, ensuring process linkage matching;

4. For Field operations, provide dust protection for the valve group, prevent rock dust and mud from entering valve stem gaps, avoiding valve core sticking;

5. Regularly verify pressure regulation accuracy, after long-term use pressure drift may occur, requiring unified re-inspection and calibration to ensure drilling machine operation safety;

6. When replacing hydraulic medium, select drilling machine dedicated hydraulic oil, install filtration devices in the oil circuit, to reduce impurity wear on internal valve cores;

7. When disassembling the valve group for maintenance, distinguish the three-piece valve body pipeline interfaces, re-test pressure after reassembly before putting into machine use.