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Rubber expansion hose

1、 Purpose: It is suitable for pl ing holes in coal or rock during grouting, water injection and after.

2、 Structure: The hole packer is composed of high-pressure rubber expansion hose, safety valve and quick connector.

3、 Technical parameters:

Sealing hole directly 30-120mm (can be processed according to user requirements)

Working pressure 1-80MPa (can be processed according to user requirements)

Starting pressure of safety valve 0.4-0.5MPa

The working flow can inject 4-4.5 tons of water per hour

Hole sealing depth 1-800m

Hose expansion coefficient 60%-***

4、 Use and precautions:

1. It is fast and simple to use the coal seam water injection hole sealing device. It is only necessary to connect the water channel at the operation site with the hole sealing, insert the hole sealing device completely into the hole, and under a certain pressure, the rubber tube of the hole sealing device expands to realize the hole sealing and water injection to break the coal.

2. The coal seam water injection hole sealer can be used repeatedly for several times. After the water injection is completed, the pressure is released, the hole sealer can be restored to its original state, and the hole sealer is taken out.

3. It is strictly forbidden to operate with pressure when feeding and pl ing hole sealers and retrieving hole sealers

4. No one is allowed to work in front of the hole packer.