DTH Hammer

DTH hammer is an integral part of the DTH drilling rig. DTH hammer is an integral part of DTH drilling rig to connect the DTH drill bit and the drilling rig. It includes low wind pressure DTH hammer, medium wind pressure DTH hammer, and high wind pressure DTH hammer. It is widely used in metallurgy, coal, chemical industry, mining, water conservancy, hydropower, highway, railway, national defense, construction, and other engineering hole forming operations.

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Introduction

DTH hammer is an integral part of DTH drilling rig to connect DTH drill bit and drilling rig.
  • Application field: It is widely used in metallurgy, coal, chemical industry, mining, water conservancy, hydropower, highway, railway, national defense, construction, and other engineering hole forming operations.
  • Working principle: High-pressure air enters the inside of the DTH hammer through the intake valve of the DTH drilling rig and the inner hole of the drill pipe. It is divided into two ways through the air distribution valve, one way enters the bottom of the hole through the center hole of the valve seat and piston and the exhaust hole of the DTH drill bit to discharge the rock slag at the bottom of the hole, and the other way is distributed to the cylinder to make it reciprocate to realize the impact work.
 

It includes low wind pressure DTH hammer, medium wind pressure DTH hammer, and high wind pressure DTH hammer.

DTH hammer performance characteristics

1. The single impact energy is high, and the energy consumption for breaking rocks is low.

2. The weight ratio of the piston and the drill bit is close, and effective for a long time. It is beneficial to improve the rock crushing efficiency and prolong the life of the drilling tools.

3. The central exhaust has a good slag discharge effect and reduces the repeated crushing of rock.

4. It has a simple and reliable internal structure that is easy to assemble and disassemble, with few failures and easy maintenance.

5. The hammer has a check valve device to drill holes in the water.

6. It is always at the front end of the hole when working, and the transmission of the impact energy is not affected by the drilling depth.

Instructions for DTH hammer

1. When the DTH hammer starts drilling, the minimum impact and propulsion force should be used to make the hammer stand against the ground, and open the impact air valve to make the DTH hammer impact work, at this time the hammer does not rotate, DTH drill bit smoothly drill into the rock, and then gradually increase the impact and propulsion force.

2. The thread of the hammer is right-hand. When the rock drilling tools are in the hole, the hammer should always keep the right rotation. Reverse rotation is strictly forbidden to avoid accidents of hammer and drill bit falling into the well.

3. During drilling, keep the hole free of rock slag, and if necessary, carry out strong blowing to clear the hole.

4. When replacing the pressure line and connecting drill pipe, clean the dirt in the pressure and keep the joint of the drill pipe clean to prevent the rock slag and dust from entering the DTH hammer.

5. Reasonable lubrication is the key to ensuring long service life and high efficiency of the hammer, or else it will accelerate the wear of the hammer.

6. During drilling, the dust brought by high pressure gas, the pollution of the lubricating oil, dust and mud enter the impactor. It not only reduces the performance of the hammer but also damages the contact surface of each moving part. Therefore, regular maintenance can ensure the continuous and reliable work of the impactor and extend the service life.

Product Parameters

Specification Drilling diameter Length Outer diameter Weight Working pressure Air consumption Connection with drill pipe Connection thread
mm mm mm kg Mpa m³/min
KQC65 φ65~φ70 745 φ61.2 13 0.5~0.7 2.5 M42X10X1.5P φ37-4
KQC70 φ72~φ74 803 φ67.2 14 0.5~0.7 3 M48X10X2P φ43-6
KQC76 φ74~φ76 766 φ67.2 15 0.5~0.7 3 M48X10X2P φ44-4
KQC80 φ80~φ82 796 φ72 17 0.5~0.7 5 API 2 3/8 Reg P φ50-6
KQC90A φ90~φ130 796 φ80.2 20 0.5~0.7 5.5 M48X10X2P φ54-6
KQC110A φ110~φ150 838 φ98 30 0.5~0.7 11 API 2 3/8 Reg B φ65-6
KQC150 φ150~φ220 908 φ137 75 0.5~0.7 17 M76X10X3B φ90-6
KQC170 φ175~φ250 1023 φ156 90 0.5~0.7 19.5 M100X28X10P φ98-6
Specification Drilling diameter Length Outer diameter Weight Working pressure Air consumption Connection with drill pipe Connection thread
mm mm mm kg Mpa m³/min
KQCZ90 φ90~φ120 870 φ80.5 25 0.8~1.2 6 API 2 3/8 Reg P φ54-6
KQCZ110 φ110~φ150 917 φ98 36 0.8~1.2 11 API 2 3/8 Reg B φ65-6
KQCG80 φ80~φ85 867 φ71 19 0.8~2.1 3-12 DZ50B φ47-6
KQCG90 φ90~φ100 908 φ81 21.8 0.8~2.1 4.3-14.2 API 2 3/8 Reg P φ53-8
KQCG105 φ105~φ130 1052 φ92 38 0.8~2.1 3.5-18 API 2 3/8 Reg B φ64-8
KQCG110 φ110~φ130 1034 φ98 39 0.8~2.1 3.5-15 API 2 3/8 Reg P φ64-8
KQCG110A φ110~φ130 994 φ98 40 1.0~2.1 3.5-15 API 2 3/8 Reg P φ64-8
KQCG115 φ115~φ130 998 φ98 40 0.8~2.1 3-12 API 2 3/8 Reg P φ67-12
KQCG130 φ130~φ152 1387 φ114 69 0.8~2.1 5.7-18 API 3 1/2 Reg P φ84-8
KQCG130A φ130~φ152 1067 φ118 60 0.8~2.1 3-14 API 2 3/8 Reg P φ83-12
KQCG140 φ140~φ152 1098 φ124 74 1.0~2.1 4.5-18 API 3 1/2 Reg P φ84-8
KQCG140A φ140~φ152 1220 φ124 74 0.8~2.1 46.5-18 API 3 1/2 Reg P φ84-8
KQCG150 φ152~φ305 1450 φ136 126 1.0~2.1 8.5-25 API 3 1/2 Reg P φ99.5-8
KQCG165 φ165~φ305 1372 φ152 92 1.0~2.1 9-26 API 3 1/2 Reg P φ99.5-8
KQCG165A φ165~φ203 1076 φ146 92 0.8~2.1 6.8-20 API 3 1/2 Reg P φ104.4-12
KQCG200 φ203~φ350 1551 φ181 208 1.0~2.1 12-31 API 4 1/2 Reg P φ128-10
KQCG200A φ203~φ350 1551 φ186 228 1.0~2.1 12-35 API 4 1/2 Reg P φ128-10
KQCG200B φ203~φ254 1450 φ181 260 0.8~2.1 9.6-25 API 4 1/2 Reg P φ128-12
KQCG200C φ203~φ350 1551 φ181 228 1.0~2.1 12-31 API 4 1/2 Reg P φ128-10
KQCG310 φ311~φ508 2110 φ275 670 1.0~2.4 30-78 API 7 5/8 Reg P φ210-12

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