CN1019037B - Means and method for mine ventilation and dedusting - Google Patents
Means and method for mine ventilation and dedustingInfo
- Publication number
- CN1019037B CN1019037B CN 89105713 CN89105713A CN1019037B CN 1019037 B CN1019037 B CN 1019037B CN 89105713 CN89105713 CN 89105713 CN 89105713 A CN89105713 A CN 89105713A CN 1019037 B CN1019037 B CN 1019037B
- Authority
- CN
- China
- Prior art keywords
- rock drill
- injector
- ventilation
- air
- deduster
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Images
Landscapes
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The present invention relates to a method for the ventilation and the dedusting of the rock drilling working face of a pneumatic rock drill by an ejector. The present invention is characterized in that waste gas exhausted by the pneumatic rock drill is used as the power of the ejector; the waste gas is guided into the ejector through a silencer, an exhausting connector and a connecting conduit of the rock drill and is sucked into dusty gas flow; the dusty gas flow is sent back to the working face for cyclic us after being purified by a deduster, or the dusty gas flow is discharged into a return airway by an air cylinder for ventilation and dedusting without being connected with the deduster. The present invention can be used for the ventilation and the dedusting of the rock drilling working face of the pneumatic rock drill in underground mines, and can also be used for the ventilation and the dedusting of underground engineering, such as, tunneling, etc.
Description
The invention belongs to the mine ventilation field, promptly use injector that air rock drill rock drilling work plane is carried out dust removal by ventilation.
Mining generally all adopts the driling explosion way, and air rock drill produces a large amount of dust when punching, and noise is very big simultaneously.In order to improve working conditions, guarantee workers ' health, need take the dust removal by ventilation measure to the rock drilling work plane.
At present, the most frequently used dust removal by ventilation method in mine is a local fan ventilation both at home and abroad.It is to drive secondary fan by motor by air duct driving face to be done pull-out type, forced or compound ventilation dedusting.The shortcoming of local fan ventilation is that noise is big, consumed power, and portable blower is installed, mobile all inconveniences, just can not use as climbing in the pot process sky well operations in many places.
Under the certain working condition in mine, the driving face that is not suitable for installing portable blower can use injector to ventilate.For example once the rock drilling work plane was carried out dust removal by ventilation in certain iron ore sublevel caving method without sill pillar ore removal operation with a WA-200 type annular space formula injector, it is the power of compressed air input injector as injector with air compressor machine, injector connects 400 millimeters of φ, long 30 meters adhesive plaster air duct is done exhaust ventilation dedusting (" WA type annular space formula calm the anger injector ", metallurgical security, nineteen eighty-two
03).Because it uses the power of compressed air as injector, capacity usage ratio is low, and energy consumption is big.
The present invention proposes a kind of waste gas that utilizes air rock drill to discharge to replace the power of compressed air as injector, a kind of ventilating dust-arrester that rock drilling work is carried out the method for dust removal by ventilation and adopted this method at above-mentioned shortcoming.
Structure of the present invention as depicted in figs. 1 and 2.Fig. 1 is a schematic diagram of taking over filter behind the injector, Fig. 2 be give a dinner for a visitor from afar behind the injector tube schematic diagram.
The waste gas that air rock drill 1 is discharged imports injector 5 via silencer 2 with exhaust joint 3 and connecting duct 4, relies on the dust-contained airflow of injector suction working face, through deduster 6 send working face after purifying back to recycles (Fig. 1) or does not connect deduster and with air duct 7 dust-contained airflow is entered return aircourse (Fig. 2) and carry out dust removal by ventilation. Described deduster can be low middle Venturi tube or other high-efficiency low-resistance deduster of pressing, and can add water spray and adjunction mesh mist eliminator when using Venturi tube.
In order to adapt to method of the present invention, the sound absorber of former air rock drill has been carried out improvement and design.The sound absorber of former hammer drill is only made exhausting silencer and is used, the steam vent area is generally all bigger, for exhaust being imported injector with suitable conduit, need dwindle the steam vent area, can increase the hammer drill back pressure but the steam vent area is too small, influence cutting rate, so silencer of rock drill steam vent area has certain restriction, the capacity (cubic meter/minute) that the present invention adopts air rock drill (is called I with the numeric ratio of silencer of rock drill steam vent area (square centimeter)
1) limit, it is characterized in that I
1Be 0.5-2, be preferably 0.86-1.2.For example the former sound absorber of YSP-45 type air rock drill is double pore, and the gross area is 20 square centimeters, and capacity is 6 cubic metres/minute, in order to be used for the present invention, the sound absorber steam vent changes single pore into, and the steam vent area is the 3-12 square centimeter, is preferably the 5-7 square centimeter.
Reach ventilating dust-removing effect again in order neither to influence cutting rate, hammer drill capacity and injector puff prot basal area also should match each other, and hammer drill capacity among the present invention (cubic metre/minute) (is called I with the numeric ratio of injector puff prot basal area (square centimeter)
2) be 0.5-2 also, be preferably 0.86-1.2.Here said injector puff prot basal area is meant the annular space area of injector concerning annular space formula injector, be meant the basal area of power pipe nozzle concerning other injectors.
Embodiment 1: the pot process upraise is climbed in certain ore deposit, with the rock drilling of YSP-45 type air rock drill, the hammer drill capacity is 6 cubic metres/minute, adopt the inventive method dust removal by ventilation, connect Venturi tube and mesh mist eliminator behind the injector, add sprinkler head, cleaned air passes is circulated to work plane, silencer of rock drill steam vent area is 7 square centimeters, I
1And I
2Value be 0.86, upraise highly is 32 meters, its effect sees Table 1.
Embodiment 2: operating condition and employing method are with embodiment 1, and sound absorber steam vent area is 6 square centimeters, I
1And I
2Value be 1, upraise highly is 56 meters, its effect sees Table 1.
Embodiment 3: operating condition and employing method are with embodiment 1, and sound absorber steam vent area is 5 square centimeters, I
1And I
2Value be 1.2, upraise highly is 58 meters, its effect sees Table 1.
Embodiment 4: operating condition and employing method are with embodiment 1, and sound absorber steam vent area is 3 square centimeters, I
1And I
2Value be 2, upraise highly is 64 meters, its effect sees Table 1.
Embodiment 5: certain ore deposit common law upraise, and with the rock drilling of YSP-45 type air rock drill, the hammer drill exhaust is 6 cubic metres/minute, adopt the inventive method, the tube of giving a dinner for a visitor from afar behind the injector is done the exhaust ventilation dedusting to the rock drilling work plane, sound absorber steam vent area is 3 square centimeters, I
1And I
2Value be 2, upraise highly is 17 meters, its effect sees Table 1.
Table 1: effect relatively before and after adopting the present invention
The dense cutting rate noise of workman's breathing zone dust
Real
Degree (milligram/square metre) (mm/second) (decibel)
Execute
Adopt this to adopt this to adopt this to adopt this to adopt this employing originally
Example
After preceding invention is invented in the invention back before inventing after the invention before the invention
1 26.34 4.38 6.83 6.78 119.63 115.50
2 43.32 7.23 6.54 6.51 119.88 113.75
3 44.85 5.0 6.85 6.78 119.63 116.25
4 50.91 6.17 6.90 6.06 119.38 115.75
5 23.60 4.38 7.31 7.15 119.25 115.75
The present invention has the following advantages: 1. utilize the waste gas of rock drill discharge as the power of injector, the complementary energy of rock drill exhaust is utilized, thereby saved expensive compressed air. 2. prevent the interaction of rock drill exhaust and magma, reduced reentrainment of dust. 3. change the direction of rock drill exhaust, reduced noise. 4. reduce water smoke and the mist of oil of working face, improved the visibility of working face. 5. can get rid of the dust of rock drilling working face, reduce dust concentration. 6. simplify the ventilation program, alleviated ventilation workman's manual labor. 7. equipment is simple, and cost is low, does not need frequent maintenance.
The present invention can be used for the dust removal by ventilation of underground mine air rock drill rock drilling working face, also can be used for the dust removal by ventilation of the underground engineerings such as tunneling.
Claims (3)
1, a kind of method of using injector that air rock drill rock drilling work plane is carried out dust removal by ventilation, it is characterized in that the waste gas that utilizes air rock drill to discharge is used as power, waste gas imports injector by sound absorber, exhaust joint, the connecting duct of air rock drill, rely on injector to suck the dust-contained airflow of work plane, send after purifying through deduster that work plane recycles back to or do not connect the deduster face and with air duct dust-contained airflow is entered the return aircourse and carry out dust removal by ventilation.
2, dust removal by ventilation method according to claim 1, the capacity (cubic meter/minute) that it is characterized in that described air rock drill and the numeric ratio (I1) of silencer of rock drill steam vent area (square centimeter) and be 0.5～2 with the numeric ratio (I2) of injector puff prot basal area (square centimeter) are preferably 0.06～1.2.
3, a kind of ventilating dust-arrester that adopts the described dust removal by ventilation method of claim 1, it is characterized in that it by YSP-45 type air rock drill 1, be installed in the sound absorber 2 on the air rock drill, the exhaust joint 3 that is connected with sound absorber, the injector 5 that is connected with exhaust joint by connecting duct 4, the deduster 6 or the air duct 7 that are connected behind the injector formed, wherein sound absorber is single pore, the area of steam vent is 3～12 square centimeters, is preferably 5～7 square centimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105713 CN1019037B (en) | 1989-05-05 | 1989-05-05 | Means and method for mine ventilation and dedusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105713 CN1019037B (en) | 1989-05-05 | 1989-05-05 | Means and method for mine ventilation and dedusting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1046957A CN1046957A (en) | 1990-11-14 |
| CN1019037B true CN1019037B (en) | 1992-11-11 |
Family
ID=4856363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105713 Expired CN1019037B (en) | 1989-05-05 | 1989-05-05 | Means and method for mine ventilation and dedusting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019037B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295423C (en) * | 2003-03-10 | 2007-01-17 | 山东泰山能源有限责任公司翟镇煤矿 | High-pressure gas-flow jet spraying and dust-reducing apparatus |
-
1989
- 1989-05-05 CN CN 89105713 patent/CN1019037B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1046957A (en) | 1990-11-14 |
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