CN111135662A - Dry-wet separation combined type mining belt conveyor transfer dust remover and dust removing method - Google Patents
Dry-wet separation combined type mining belt conveyor transfer dust remover and dust removing method Download PDFInfo
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- CN111135662A CN111135662A CN202010039367.XA CN202010039367A CN111135662A CN 111135662 A CN111135662 A CN 111135662A CN 202010039367 A CN202010039367 A CN 202010039367A CN 111135662 A CN111135662 A CN 111135662A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
Abstract
The invention relates to a dry-wet separation combined type mining belt conveyor transfer dust remover and a dust removing method, wherein the dust remover comprises a dry type dust separation device, a power supply device and a wet type dust removal device which are sequentially communicated, the dry type dust separation device comprises a dust separation cavity and a dust collection diversion cavity which are communicated with each other, the dust separation cavity is an L-shaped cavity with four closed surfaces and four open surfaces, the dry-wet separation of dust can be realized, the processes are independent and closed, the influence of the spraying process on the physicochemical properties of coal and rock materials and the air humidity of an operation space can be effectively avoided, the water consumption of spraying and the sewage recovery amount can be greatly reduced by concentrated spraying, and the combined type mining belt conveyor transfer dust remover has the beneficial technical effects of small negative influence, high dust removal efficiency, low operation cost, good environmental performance and the like.
Description
Technical Field
The invention relates to transshipment dust removal of a mining belt conveyor, in particular to a dry-wet separation combined type transshipment dust remover and a dust removal method for the mining belt conveyor.
Background
At present, a spraying dust-settling method is widely adopted in domestic and foreign mines to carry out prevention, control and treatment on high-concentration dust pollution in a transferring area of an underground belt conveyor. Research shows that suspended dust particles can collide with fog drops with a certain speed, are intercepted and are condensed to form dust-containing liquid drops, so that sedimentation is realized under the action of gravity, and the dust concentration in the air is reduced. However, the existing transfer point spraying dust-settling technology generally has the following defects:
(1) the fog field faces to the coal and rock materials being transported, and excessive moisture can obviously influence physicochemical parameters such as water content and the like of the coal and rock materials, so that the properties of the materials are obviously changed;
(2) fine fog drop particles generated by the nozzle are suspended in the air of a working place for a long time, so that the humidity of a production environment is too high, and the body feeling of an operator is uncomfortable;
(3) the underground transfer area is an open space, the spraying range and the spraying water consumption are increased for improving the dust fall efficiency, the production cost is greatly increased, the dust removal sewage cannot be recycled, and the secondary pollution is caused to the operation environment.
In order to effectively improve the dust control and removal efficiency of the transfer point of the mining belt conveyor, the invention provides a dry-wet separation combined type mining belt conveyor transfer dust remover and a dust removal method, which can seal dust separation and centralized dust removal, and carry out the dry-wet process independently so as to avoid direct influence on physical and chemical properties of materials and production environment and realize safe and efficient production of a mine.
Disclosure of Invention
The invention provides a dry-wet separation combined type mining belt conveyor transfer dust remover and a dust removing method, which aim to effectively improve the dust control and removal efficiency of a transfer point of a mining belt conveyor.
The dry-wet separation combined type mining belt conveyor transshipment dust remover comprises a dry type dust separation device, a power supply device and a wet type dust removal device which are sequentially communicated, wherein the dry type dust separation device comprises a dust separation cavity and a dust collection diversion cavity which are communicated with each other, the dust separation cavity is an L-shaped cavity with four closed surfaces and four open surfaces, the discharge end of a belt conveyor extends into the dust separation cavity from an L-shaped corner, a rubber dust blocking curtain is respectively arranged at a feed inlet and a discharge outlet of the dust separation cavity, a dust concentration sensor is arranged at an upper corner of the dust separation cavity, a diversion port is arranged at the upper part of the discharge outlet and communicated with an inlet of the dust collection diversion cavity, a rectangular electric control rotary diversion plate is arranged in the dust collection diversion cavity, two closed support plates which are completely matched with the front end surface and the rear end surface of the dust separation cavity are arranged at the bottom side of the dust separation cavity, and the closed support plates are fixed through clamping bolts for adjusting the height, the inner sides of the two closed supporting plates are provided with fixing clamps with matched positions along the length direction, the left ends of the two closed supporting plates are provided with grooves with corresponding positions, the detachable dust-separation baffle is inserted into the groove, the material receiving end of the two-conveyor belt extends into an inner space formed by the closed supporting plates and the dust-separation baffle, and the upper portion of the detachable dust-separation baffle is provided with a dust concentration sensor.
Furthermore, the front end face, the rear end face, the upper end face and the right end face of the discharge hole of the dust isolation cavity are closed.
Furthermore, the power supply device is a small-sized mining axial-flow type negative pressure fan, and the negative pressure fan is communicated with the outlet of the dust collection flow guide cavity through a telescopic steering negative pressure air duct.
Furthermore, the dust collection flow guide cavity is a quadrangular frustum pyramid cavity.
Furthermore, wet dust collector includes the four-edge table formula dust fog coalescence chamber, and the cavity entry is linked together with power supply device, and the cavity rear portion sets up cross little fog generator, and little fog generator is connected with the tunnel water supply pipe, evenly is provided with a plurality of atomizing nozzle on the little fog generator, and the cavity export sets up vortex supercharging device.
Furthermore, the turbulence supercharging device is composed of alternately arranged turbulence bar gaps and device entities, wherein the turbulence bar gaps are of double-side arc structures, and arc openings face the incoming flow direction.
Furthermore, pulley supports with adjustable heights are arranged outside the dry dust separation device and the wet dust removal device, and the dust remover is integrally erected on the upper portion of the body of the two-conveyer belt conveyor.
Furthermore, a sewage collecting groove is arranged at the lower part of the wet dust removal device.
A dust removal method of the combined type mining belt conveyor reversed dust remover adopting dry-wet separation comprises the following steps:
step 1, mounting the transshipment dust-settling device at a transshipment point of a belt conveyor;
step 2, before the transferring process is started, firstly starting a micro-fog generator, and then starting a small-sized mining axial-flow type negative pressure fan;
step 3, after the whole transfer dust remover runs stably, starting the two belt conveyors to carry out normal transfer operation, wherein in the process of transfer operation, dust concentration sensors at the upper corner of the dust isolation cavity and the dust isolation baffle plate monitor and display dust concentration in real time, an operator determines the dust concentration distribution condition in the dust isolation cavity according to the real-time data of the two dust concentration sensors, and remotely adjusts the inclination angle of the rotary guide plate according to the dust concentration distribution condition to carry out transfer dust removal operation of the conveyors;
Furthermore, the inclination angle of the rotating guide plate in the step 3 is adjusted in such a way that when the display value of the dust concentration sensor at the upper corner of the dust separation cavity is greater than the display value of the dust concentration sensor at the dust separation baffle, the rotating guide plate is parallel to the upper end surface of the dust collection guide cavity;
when the display value of the dust concentration sensor at the upper corner of the dust separation cavity is smaller than that of the dust concentration sensor at the dust separation baffle, the rotary guide plate is parallel to the lower end face of the dust collection guide cavity.
Has the advantages that: the combined type mining belt conveyor transfer dust remover and the dust removing method with dry and wet separation provided by the invention have the advantages that high-concentration dust generated in a transfer process is concentrated and isolated in the dry dust separation device, dust-containing gas is rapidly energized and accelerated under the action of air suction negative pressure provided by the power supply device and is injected into the wet dust removal device at a high speed, and because the movement direction of the dust-containing gas is opposite to the jet flow direction of a mist field, the phenomena of inertial collision, interception, coagulation and gravity settling constantly occur between dust particles and mist drops, so that the dust particles are separated from the gas, and the high-efficiency control and removal of the high-concentration dust are realized; particularly, the dry-wet separation can be realized, namely, the dry-type dust isolation and the wet-type dust treatment are carried out independently and hermetically, the physical and chemical properties of coal and rock materials and the air humidity of an operation space can be effectively prevented from being influenced by the spraying process, and the water consumption of spraying and the sewage recovery amount can be greatly reduced by concentrated spraying.
Drawings
FIG. 1 is a schematic structural view of a front cross section of a reversed loading dust remover of the combined mining belt conveyor;
FIG. 2 is a schematic front view of the dust-proof chamber and the closed supporting plate of the present invention;
FIG. 3 is a right side view of the dust-proof chamber and the closed supporting plate of the present invention;
FIG. 4 is a schematic left side view of the dust collecting guide chamber of the present invention;
FIG. 5 is a schematic left side view of the dust and mist merging chamber according to the present invention;
FIG. 6 is a left side view of the turbocharger device of the present invention;
FIG. 7 is a schematic diagram illustrating a top view of a turbulated plenum in accordance with the present invention;
fig. 8 is a flow chart of the operation of the reversed loading dust remover of the combined mining belt conveyor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-7, the invention provides a dry-wet separated combined type mining belt conveyor reprinting dust remover, which comprises a dry type dust separation device 1, a power supply device 2 and a wet type dust removal device 3, wherein the dry type dust separation device 1 is communicated with the power supply device 2, and the power supply device 2 is communicated with the wet type dust removal device 3.
Furthermore, the dry dust separation device 1 comprises a dust separation cavity 4 and a dust collection diversion cavity 5, wherein the dust separation cavity 4 is an L-shaped cavity with an upper bottom of 0.5-1 m, a lower bottom of 1-2 m, a width of 0.6-1.5 m and a height of 1-1.5 m, the front end surface, the rear end surface, the upper end surface and the right end surface of the dust separation cavity 4 are closed, the remaining end surfaces are open, a discharge end of a belt conveyor 6 extends into the cavity from an L-shaped corner, the upper end of the corner is provided with a rectangular feed inlet 7 with a length of 0.6-1.5 m and a width of 0.5-0.8 m, the lower part of the right end surface of the cavity is provided with a rectangular discharge outlet 8 with a length of 0.3-0.6 m and a width of 0.1-0.3 m, the feed inlet 7 is provided with a first rubber dust blocking curtain 9, the discharge outlet 8 is provided with a second rubber dust blocking curtain 10, the upper corner in the cavity is provided with a first dust concentration sensor 11, the upper part of the discharge outlet 8 is provided with a length of 0.4-1 m, a width of 0.3m, the dust collection diversion cavity 5 is a quadrangular frustum pyramid cavity, the upper bottom of the dust collection diversion cavity is a rectangle with the length of 0.4-1 m and the width of 0.4-0.7 m, the lower bottom of the dust collection diversion cavity is a rectangle with the length of 0.6-1.2 m and the width of 0.5-0.9 m, the height of the dust collection diversion cavity is 0.5-1 m, and a rectangular electric control rotary diversion plate 14 with the length of 0.2-0.5 m and the width of 0.2-0.5 m is arranged in the cavity; two rectangular closed supporting plates 15 which are completely matched with the front end surface and the rear end surface of the dust separation cavity are arranged at the bottom side of the lower part of the dust separation cavity 4, the rectangular closed supporting plates 15 are completely matched with the lower bottom of the dust separation cavity 4, the length of each rectangular closed supporting plate 15 is 1-2 m, the width of each rectangular closed supporting plate is 0.5-1 m, a fixed blocking block 16 is arranged at the inner side of each closed supporting plate 15 along the length direction, a groove 17 is arranged at the left end of each closed supporting plate 15, a rectangular detachable dust separation baffle 18 which is completely matched with each rectangular closed supporting plate 15 and has the length of 0.6-1.5 m and the width of 0.5-1 m is inserted into the groove, the material receiving end of a secondary belt conveyor 19 extends into an inner space formed, therefore, a closed dust-proof space which can isolate the whole transfer area is formed among the upper dust-proof cavity 4, the lower closed supporting plate 15, the detachable dust-proof baffle plate 18 and the two-conveyer belt conveyor 19.
Furthermore, the power supply device 2 comprises a small-sized mining axial flow negative pressure fan 21, and the negative pressure fan 21 is communicated with a dust collection diversion cavity outlet 23 through a telescopic steering negative pressure air duct 22.
Furthermore, the wet dust removal device 3 comprises a quadrangular frustum dust fog merging cavity 24, the upper bottom of the cavity is a rectangle with the length of 0.4-1 m and the width of 0.4-0.7 m, the lower bottom is a rectangle with the length of 0.6-1.2 m and the width of 0.5-0.9 m, and the height of the cavity is 0.5-1 m, a cavity inlet 25 is communicated with the power supply device 2, a cross-shaped micro fog generator 26 is arranged at the rear part of the cavity, 4-12 micro atomizing nozzles 27 are uniformly arranged on the micro fog generator 26, a fog field formed by the nozzles 27 can effectively cover the whole dust incoming cross section, the micro fog generator 26 is connected with a roadway water supply pipeline, a cavity outlet 28 is provided with a rectangular turbulent flow supercharging device 29 which is completely matched with the cavity outlet and has the length of 0.6-1.2 m and the width of 0.5-0.9 m, 4-10 double-side arc-shaped turbulent flow strip gaps 30 are arranged in the device, arc openings face the incoming flow direction, and the turbulent flow strip gaps 30 and the device.
The clamping bolt 32 used for adjusting the height is arranged between the dust separation cavity 4 and the closed supporting plate 15, the first pulley support 33 with the adjustable height is arranged outside the dry dust separation device 1, the second pulley support 34 with the adjustable height is arranged outside the wet dust removal device 3, the whole dust remover is erected on the upper portion of the machine body of the two-conveyer belt 19, the clamping bolt 32 can be adjusted according to actual conditions, and the first pulley support and the second pulley support enable the device height to meet the operation requirements.
Further, a dust collecting tank 35 is provided below the wet dust collector 3 for collecting and treating waste such as sludge formed by the coagulation of the dust mist.
The invention relates to a dust removal method of a combined type mining belt conveyor transfer dust remover with dry and wet separation, which is installed at transfer points of a first conveying belt conveyor 6 and a second conveying belt conveyor 19, wherein a small mining axial-flow type negative pressure fan 21 and a micro mist generator 26 are both in a closed state under the condition that the first conveying belt conveyor 6 and the second conveying belt conveyor 19 are not in operation. Before the transferring process begins, firstly, the micro-mist generator 26 is started, the dust mist coagulation cavity 24 is pre-moistened, and a micro-mist space is formed; then, the small-sized mining axial flow type negative pressure fan 21 is started, on one hand, a negative pressure field is formed in the dust isolation cavity 4 and the dust collection guide cavity 5 in advance, dust is inhibited from escaping to an external operation space from the opening position or a connecting gap of the dust isolation cavity 4 under the action of pressure difference between the inside and the outside of the cavity, meanwhile, the dust is facilitated to be quickly collected in the dust collection guide cavity 5 under the action of air suction and negative pressure, on the other hand, stable directional wind current crossing the whole device is formed, partial micro fog droplets are carried to flow through the turbulence supercharging device 29, and turbulence strip gaps 30 are wetted in advance, so that a better dust removal effect is achieved; after the whole operation of the transferring dust remover is stable, the first belt conveyor 6 and the second belt conveyor 19 are started to carry out normal transferring operation.
High-concentration dust formed in the process of transferring is diffused and distributed in the dust separation cavity 4, a first dust concentration sensor 11 positioned at the upper corner of the dust separation cavity 4 and a second dust concentration sensor 20 positioned at a dust separation baffle 18 monitor and display the dust concentration in real time, an operator determines the dust concentration distribution condition in the dust separation cavity 4 according to the real-time data of the two dust concentration sensors, and based on the dust concentration distribution condition, the inclination angle of a rotary guide plate 14 in the dust collection guide cavity 5 is remotely adjusted, for example, the display data of the second dust concentration sensor 20 is larger than the display data of the first dust concentration sensor 11, which indicates that the dust in the dust separation cavity 4 is concentrated at the end part of a two-conveyor belt 19, the inclination angle of the rotary guide plate 14 is adjusted to be parallel to the lower end surface of the dust collection guide cavity 5, and the high-concentration dust collected at the lower part flows through the dust collection guide cavity 5 under the guide, after the air is pressurized and accelerated by the small-sized mining axial-flow type negative pressure fan 21, the air is jetted into the dust fog coagulation cavity 24 along with the wind flow from the air outlet of the negative pressure fan 21.
The movement direction of the dust-containing air flow in the dust and mist merging cavity 24 is just opposite to the direction of the fog field jet flow formed by the micro-fog generator 26, so that the collision, interception, condensation probability and strength between dust particles and fog droplet particles are effectively increased, most of dust is separated from the air flow, is condensed with the fog droplet particles to form dust-containing droplets, is settled to the lower end face of the dust and mist merging cavity 24 under the action of gravity, and slides into the sewage collection tank 35; and in addition, a few of dust particles which are not effectively settled continuously pass through the micro mist field along with the wind flow and flow through the turbulence supercharging device 29, and in the process of passing through the turbulence strip gaps 30, the dust particles collide with the cambered surfaces at the two sides under the action of inertia, because the cambered surfaces are pre-moistened, the dust particles are separated from the wind flow and are adhered to the cambered surfaces, and the purified clean wind flow is extruded by the strip gaps when passing through the turbulence strip gaps 30 so that the pressure energy is increased and the speed is increased, and then enters the roadway space at a certain speed to participate in ventilation of other operation places.
After the transferring process is completed, firstly, the first belt conveyor 6 and the second belt conveyor 19 stop running, secondly, the small-sized mining axial-flow type negative pressure fan 21 is closed, and finally, the micro mist generator 26 is closed; after the whole reversed dust collector completely stops running, the disturbed flow supercharging device 29 and the dirt collecting groove 35 are cleaned.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. Dry wet-separating's mining band conveyer reprint dust remover of combination formula, its characterized in that: the dust remover comprises a dry dust separation device, a power supply device and a wet dust removal device which are sequentially communicated, wherein the dry dust separation device comprises a dust separation cavity and a dust collection flow guide cavity which are communicated with each other, the dust separation cavity is an L-shaped cavity with closed four surfaces and open four surfaces, a discharge end of a belt conveyor extends into the dust separation cavity from an L-shaped corner, a feeding port and a discharge port of the dust separation cavity are respectively provided with a rubber dust blocking curtain, a dust concentration sensor is arranged at the upper corner of the cavity of the dust separation cavity, a flow guide port is arranged at the upper part of the discharge port and communicated with an inlet of the dust collection flow guide cavity, a rectangular electric control rotary flow guide plate is arranged in the dust collection flow guide cavity, two closed supporting plates which are completely matched with the front end surface and the rear end surface of the dust separation cavity are arranged at the lower part of the dust separation cavity, the dust separation cavity and the closed supporting plates are fixed through clamping bolts for adjusting the height, and fixed, the left ends of the two closed supporting plates are provided with grooves corresponding in position, the detachable dust-separation baffle is inserted into the grooves, the material receiving end of the two-conveyor belt conveyor extends into an inner space formed by the closed supporting plates and the dust-separation baffle, and the upper portion of the detachable dust-separation baffle is provided with a dust concentration sensor.
2. The combined type mining belt conveyor reversed loading dust remover for dry-wet separation according to claim 1, characterized in that the front end face, the rear end face, the upper end face and the right end face where the discharge hole is located of the dust isolation cavity are closed.
3. The combined type mining belt conveyor reversed-loading dust remover for dry-wet separation according to claim 1, characterized in that the power supply device is a small-sized mining axial-flow type negative pressure fan, and the negative pressure fan is communicated with the outlet of the dust collection diversion cavity through a negative pressure air duct capable of telescopically turning.
4. The dry-wet separation combined type mining belt conveyor reversed loading dust remover according to claim 1, wherein the dust collection diversion cavity is a quadrangular frustum pyramid cavity.
5. The dry-wet separation combined type mining belt conveyor reversed-loading dust remover according to claim 3, wherein the wet-type dust removal device comprises a quadrangular frustum pyramid type dust fog condensation cavity, an inlet of the cavity is communicated with a power supply device, a cross-shaped micro fog generator is arranged at the rear part of the cavity and is connected with a roadway water supply pipeline, a plurality of atomizing nozzles are uniformly arranged on the micro fog generator, and a cavity outlet is provided with a turbulent flow pressurization device.
6. The dry-wet separated combined mining belt conveyor transshipment dust remover according to claim 5, wherein the turbulent flow supercharging device is composed of alternately arranged turbulent flow bar gaps and device bodies, the turbulent flow bar gaps are of a double-side arc structure, and arc openings face the incoming flow direction.
7. The dry-wet separation combined type mining belt conveyor reloading dust remover as claimed in claim 1, wherein the pulley supports with adjustable heights are arranged outside the dry dust separation device and the wet dust removal device, and the dust remover is integrally erected on the upper portion of the body of the two-conveyer belt conveyor.
8. The dry-wet separated combined type mining belt conveyor reversed loading dust remover according to claim 6, characterized in that a dirt collecting groove is arranged at the lower part of the wet dust removing device.
9. A dust removal method adopting the dry-wet separation combined type mining belt conveyor reversed dust remover as claimed in claim 6, characterized in that the dust removal method comprises the following steps:
step 1, mounting the transshipment dust-settling device at a transshipment point of a belt conveyor;
step 2, before the transferring process is started, firstly starting a micro-fog generator, and then starting a small-sized mining axial-flow type negative pressure fan;
step 3, after the whole transfer dust remover runs stably, starting the two belt conveyors to carry out normal transfer operation, wherein in the process of transfer operation, dust concentration sensors at the upper corner of the dust isolation cavity and the dust isolation baffle plate monitor and display dust concentration in real time, an operator determines the dust concentration distribution condition in the dust isolation cavity according to the real-time data of the two dust concentration sensors, and remotely adjusts the inclination angle of the rotary guide plate according to the dust concentration distribution condition to carry out transfer dust removal operation of the conveyors;
step 4, after the transferring process is completed, firstly stopping the two belt conveyors, then closing the small-sized mining axial flow type negative pressure fan, and finally closing the micro-mist generator; and after the whole reversed loading dust remover completely stops running, cleaning the turbulent flow supercharging device and the dirt collecting groove.
10. The dust removing method of the combined belt conveyor reversed dust remover for mining use according to claim 9, wherein the inclination angle of the rotary deflector in step 3 is adjusted in such a manner that the rotary deflector is parallel to the upper end surface of the dust collecting deflector cavity when the display value of the dust concentration sensor at the upper corner of the dust separating cavity is greater than the display value of the dust concentration sensor at the dust separating baffle;
when the display value of the dust concentration sensor at the upper corner of the dust separation cavity is smaller than that of the dust concentration sensor at the dust separation baffle, the rotary guide plate is parallel to the lower end face of the dust collection guide cavity.
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Cited By (1)
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|---|---|---|---|---|
| CN111896210A (en) * | 2020-07-10 | 2020-11-06 | 太原理工大学 | Coal mine transfer point induced airflow and dust measurement simulation experiment system |
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