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- CIR Series DTH HAMMER
Website: http://www.bddrillgroup.com/dth-drilling-tools/low-air-pressure-dth-hammer/cir-series-dth-hammer.html
CIR150 Low Air Pressure DTH HammersWhat is Low air pressure DTH hammer ?Low air pressure DTH hammer is widely used in geotechnical engineering in a variety of hard, high hardness and other toughness can be poor tough rock, the following characteristics:1. Low air pressure DTH hammer is a valve-type center exhaust hammer, the discharge of rock powder effect is good, reducing the re-broken rock slag, reducing the wear of the drill, improve the drilling efficiency.2. Using the latest rock design theory to design the hammer of the internal structure of the size of the hammer to obtain the ideal energy transfer, a single hammer power, drilling faster, lower air consumption.3. Selection of the highest quality raw materials and the most advanced processing technology, more stable performance, longer life.4. Easy disassembly, low failure, easy maintenance.?The application of Low air pressure DTH Hammer:Mining, quarrying, road construction and other projects drilling blasting hole, landslide protection, dam reinforcement, anchoring and other engineering holes, geothermal air conditioning, hydrology, wells and other fields.?HR Series DTH Hammer, a kind of valve-equipped Low-Air-Pressure hammer with a single piston, a plate valve and a central exhaust structure. The compressed air is adopted as the driving force. To prevent dust pollution and get a better performance, some high-pressure water may be added into the air for wet rock drilling.?It is mainly featured in:1.The strong energy of single impact and the low energy consumption in rock crushing;2.The weight ratio of Piston and Bit almost Reaches 1:1 to provide long effective acting time, which leads to the improved efficiency in rock crushing and the extended service life of the drilling tool;3.A good performance in central air exhaust and cuttings discharge, which reduces the repeated crushing of rock;4.A check valve device is available to drill holes finder water.The HR Series DTH Hammer, an ideal drilling tool, is widely used in such industries relating to energy, transportation, metallurgy, building etc.
- BR Series DTH HAMMER
Website: http://www.bddrillgroup.com/dth-drilling-tools/low-air-pressure-dth-hammer/br-series-dth-hammer.html
Br1 Low Air Pressure DTH HammersWhat is Low air pressure DTH hammer ?Low air pressure DTH hammer is widely used in geotechnical engineering in a variety of hard, high hardness and other toughness can be poor tough rock, the following characteristics:1. Low air pressure DTH hammer is a valve-type center exhaust hammer, the discharge of rock powder effect is good, reducing the re-broken rock slag, reducing the wear of the drill, improve the drilling efficiency.2. Using the latest rock design theory to design the hammer of the internal structure of the size of the hammer to obtain the ideal energy transfer, a single hammer power, drilling faster, lower air consumption.3. Selection of the highest quality raw materials and the most advanced processing technology, more stable performance, longer life.4. Easy disassembly, low failure, easy maintenance.?The application of Low air pressure DTH Hammer:Mining, quarrying, road construction and other projects drilling blasting hole, landslide protection, dam reinforcement, anchoring and other engineering holes, geothermal air conditioning, hydrology, wells and other fields.?BR Series DTH Hammer, a kind of valve-equipped Low-Air-Pressure hammer with a single piston, a plate valve and a central exhaust structure. The compressed air is adopted as the driving force. To prevent dust pollution and get a better performance, some high-pressure water may be added into the air for wet rock drilling.?It is mainly featured in:1.The strong energy of single impact and the low energy consumption in rock crushing;2.The weight ratio of Piston and Bit almost Reaches 1:1 to provide long effective acting time, which leads to the improved efficiency in rock crushing and the extended service life of the drilling tool;3. A good performance in central air exhaust and cuttings discharge, which reduces the repeated crushing of rock;4.A check valve device is available to drill holes finder water.The HR Series DTH Hammer, an ideal drilling tool, is widely used in such industries relating to energy, transportation, metallurgy, building etc.
- 3 Inch DTH Hammer
Website: http://www.bddrillgroup.com/dth-drilling-tools/high-air-pressure-dth-hammer/3-inch-dth-hammer.html
BD Drill - One-stop-shop for all your drilling solutions.The BD Drill range of 3" DTH hammers is designed around proven technology to perform at the top end of the performance scale compared to other tools on the market. These tools are excellent for all types of drilling applications including residential geothermal, production quarry drilling, seismic drilling and small construction drilling.Our 3" hammers are available in the popular DHD 3.5 shank with foot valve type and without foot valve type with HD35A and Mission30 bit shank for operation at higher pressures ranges from 1.0-1.5Mpa.?Features of the with foot valve type:1. More reliable air distribution.2. Simple design of the piston, durability performance.3. More efficient energy transfer, faster drilling speed, lower air consumption and lower oil consumption.4. Fewer internal parts, simple structure, longer life, less failure and easier to maintain because all the parts are heat treated.5. Easy to disassemble because the top sub, the drive chuck and the external cylinder are connected by multi-step thread.?
- 4 Inch DTH Hammer
Website: http://www.bddrillgroup.com/dth-drilling-tools/high-air-pressure-dth-hammer/4-inch-dth-hammer.html
BD DRILL produce the broadest range of hammers, bits, and related equipment. This means more choices for you. It means you can work with the strongest support network in the industry, regardless of your
equipment needs. It means that you can look to one reliable and time tested source for all your equipment needs.
?
The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ?"–10″). Smaller blast holes are generally drilled using top hammer, and larger holes generally use rotary machines.
In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to . 750 mm (30″). With multiple hammer units CD (Cluster drills) drill holes up to 70″ or 1778 mm.
Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.
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What is the down the hole (DTH) hammer:
Down the hole hammers are rock drilling equipment which takes compressed air as power source to partially transfer impact power into drilling holes. An air distributing device in a top hammer controls a piston to move back and forth. An impact device arranged in the front of the top hammer transfers the impact powderto a down-the-hole bit to crush rocks.
1. Based on previous experience of ordinary hammers, combined with the features of reverse circulation hammer, optimized internal structure and ideal energy transfer, thus ensuring the series of hammers drilling with fast, smooth and continuous sampling.
2. The internal structure is very simple with components of high rigidity, thus ensuring long life and easy maintenance of the hammer.
3. The? collection tube adopts an integrative design and can be? replaced? without disassembling the hammer. With carburizing treatment, it has good abrasive resistance.
4. Equipped with bits designed with patent. Simply by replacing the drill bit, the same hammer can drill holes of different sizes ensuring that the sample is not contaminated.
5. In difficult conditions such as loose soil, hard rock and plenty of water exists, sampling can be done well.
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How to use the Down The Hole (DTH) Hammer function?
When percussion or hammer drilling the percussion mechanism is called a DTH or down the hole
hammer. This drilling tool is located directly above the down hole hammer bit. The driller transfers
weight to the bit through the drill pipe as well as provides some rotation. Through the use of a compressor, the pressurized air is forced to the down hole hammer. As the drilled hole gets deeper the driller adds more drill pipe to the string. The piston strikes the impact zone of the hammer bit; hammers are always used as part of a casing advancement system and can be used in reverse circulation applications. DTH hammers are common when drilling blast holes and water wells.
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Suitable choice of raw material, advanced processing technology and perfect quality warranty.
With hardened treatment, drilling life can be extended and then cost can be reduced.
Size range 3’’, 3.5’’, 4’’, 5’’, 6’’, 8’’, 10’’, 12’’ etc.
Shank styles: DHD3.5, DHD340, DHD350, DHD360, DHD380; COP44, COP54, COP64, COP84;
TD40, QL50, QL60, QL80; Mission40, Mission50, Mission60, Mission80; SD4, SD5, SD6, SD8.
- Valveless air distribution. More reliable.
- Simple design of the piston. Long life.
- More efficient energy transfer, fact drilling speed, lower air consumption and lower oil consumption.
- Fewer internal parts, simple structure, long life, less failure and easier to maintain because all the parts are heat treated.
- Easy to disassemble because the top sub, the drive chuck and the external cylinder are connected by multi-step thread.
- 5 Inch DTH Hammer
Website: http://www.bddrillgroup.com/dth-drilling-tools/high-air-pressure-dth-hammer/5-inch-dth-hammer.html
BD DRILL produce the broadest range of hammers, bits, and related equipment. This means more choices for you. It means you can work with the strongest support network in the industry, regardless of yourequipment needs. It means that you can look to one reliable and time tested source for all your equipment needs.?The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ?"–10″). Smaller blast holes are generally drilled using top hammer, and larger holes generally use rotary machines.?In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to . 750 mm (30″). With multiple hammer units CD (Cluster drills) drill holes up to 70″ or 1778 mm.Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.It is mainly featured in:1.The strong energy of single impact and the low energy consumption in rock crushing;2.The weight ratio of Piston and Bit almost Reaches 1:1 to provide long effective acting time, which leads to the improved efficiency in rock crushing and the extended service life of the drilling tool;3. A good performance in central air exhaust and cuttings discharge, which reduces the repeated crushing of rock;4.A check valve device is available to drill holes finder water.Our 5 inch DTH Hammer has different types of bit shank like COP54, DHD350R, HD55A, MISSION50, SD5, QL50, ETC. it is a ideal drilling tool which widely used in such industries relating to mining, quarry, energy, transportation, metallurgy, building etc.
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