DTH hammer is an integral part of the submersible drilling rig and is part of the working equipment of the submersible drilling rig.
DTH hammer is divided into low air pressure DTH hammer, medium air pressure DTH hammer and high air DTH hammer.

The working principle of the DTH hammer : at the beginning of the hammer stroke, the piston and the valve piece are both in the extreme upper position, and the pressurized air enters the upper cavity of the cylinder through the radial hole of the valve cover and the valve seat, pushing the piston to move downward at high speed to impact the drill bit. When the piston reaches the spline groove of the bushing and is closed, the pressure in the lower cavity starts to rise, so the centre hole of the upper end of the piston leaves the air distribution rod, making the upper cavity open to the atmosphere, the pressure decreases and the working stroke ends. When the piston impacts the end of the drill bit, the valve piece changes direction due to its upper and lower pressure difference, and the piston repeats the return stroke movement.

RS is the backbone manufacturer of national rock drilling machinery products and has obtained the production license for submersible drilling rigs. The high-pressure DTH hammer is a new generation of patented products developed by our many experienced scientific experts with reference to the latest technology of shallow hole drilling rigs at home and abroad and the problems that often arise in actual use. It is widely used in railway, highway, hydropower, water conservancy, mining, quarrying, construction, shipbuilding and other infrastructure construction fields, and has been tested in the market for many years.

High air pressure DTH hammer features :

1、The drill bit used has no tail pipe (nylon tube), which eliminates the breakage of the drill bit that occurs during thermal expansion and contraction at work and during transportation.

2. The optimal air distribution size and cavity design and air tightness are adopted, and the system consumes less air to save fuel by more than 10%.

3、The impact frequency is faster than the same period, and the drilling speed is more than 20%-30% faster.

4、Thinner piston, high impact power and high perforation efficiency.

5、The piston material of the DTH hammer is made of imported special steel, and the advanced heat treatment process is applied, and the surface of the impactor is reinforced with good wear resistance.

6、The hammer adopts easy disassembly design, easy maintenance.