CN212003176U - Arc blowing-sucking type dust removal anti-fog device suitable for coal face - Google Patents
Arc blowing-sucking type dust removal anti-fog device suitable for coal face Download PDFInfo
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- CN212003176U CN212003176U CN202020429780.2U CN202020429780U CN212003176U CN 212003176 U CN212003176 U CN 212003176U CN 202020429780 U CN202020429780 U CN 202020429780U CN 212003176 U CN212003176 U CN 212003176U
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Abstract
An arc-shaped blowing-sucking type dust and fog removing device suitable for a coal face comprises a first arc-shaped air head, a second arc-shaped air head, a centrifugal fan and a dry dust remover; the two arc-shaped wind heads are positioned behind the coal mining machine roller and symmetrically arranged on the left side and the right side of the coal mining machine roller, and the concave surfaces of the two arc-shaped wind heads face the coal mining machine roller; the first arc-shaped air head is fixedly connected to the roller rocker arm through a first switching bracket, and the second arc-shaped air head is fixedly connected to the roller rocker arm through a second switching bracket; the dry type dust collector fixing frame is arranged at the top of the body of the coal mining machine, the centrifugal fan is arranged at the top of the shell of the dry type dust collector, an air outlet of the centrifugal fan is communicated with the first arc-shaped air head through a first metal pipe, a first spring pipe and a second metal pipe in sequence, an air suction inlet of the centrifugal fan is communicated with an air outlet of the dry type dust collector through a third metal pipe, and an air inlet of the dry type dust collector is communicated with the second arc-shaped air head through a fourth metal pipe, a second spring pipe and a fifth metal pipe in sequence.
Description
Technical Field
The utility model belongs to the technical field of mining dust collecting equipment, especially, relate to an arc pressure-vaccum formula dust removal anti-fogging device suitable for coal face.
Background
Along with the gradual improvement of the performance of the coal mining machine, the coal mining quantity and the coal mining efficiency are synchronously improved, but the dust quantity of the coal mining working face is increased, and a large amount of dust can bring great negative effects on the safety of personnel and equipment.
At present, the dust removal mode of the coal face still mainly adopts wet dust removal, but the defects of the wet dust removal mode are not effectively solved all the time, for example, the nozzle is blocked and the spray amount is too large, the atomization effect is poor due to the nozzle blockage, and the water mist pollution in a roadway is caused due to the too large spray amount.
According to statistics, the dust concentration of the coal face can reach 2500-3000 mg/m under the condition of no dust removal measures3When the wet dust removal is started, the dust concentration of the coal face can still reach 1000mg/m3From the above, it is clear that the dust concentration at this time is still far higher than the dust concentration specified in "coal mine safety regulations" by not more than 10mg/m3The standard of (2).
SUMMERY OF THE UTILITY MODEL
The problem to prior art exists, the utility model provides an arc pressure-vaccum formula dust removal anti-fogging device suitable for coal face can effectively guarantee coal face's dust removal effect, avoids under the wet-type dust removal because of the too big water smoke pollution that leads to of fog volume.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an arc-shaped blowing-sucking type dust and fog removing device suitable for a coal face comprises a first arc-shaped air head, a second arc-shaped air head, a centrifugal fan and a dry dust remover; the first arc-shaped air head and the second arc-shaped air head are positioned behind the coal mining machine roller, the first arc-shaped air head and the second arc-shaped air head are symmetrically arranged on the left side and the right side of the coal mining machine roller, and the concave surfaces of the first arc-shaped air head and the second arc-shaped air head face the coal mining machine roller; the first arc-shaped air head is fixedly connected to the roller rocker arm through a first switching bracket, and the second arc-shaped air head is fixedly connected to the roller rocker arm through a second switching bracket; the dry type dust collector fixing frame is arranged at the top of the machine body of the coal mining machine, the centrifugal fan is arranged at the top of the shell of the dry type dust collector, an air outlet of the centrifugal fan is communicated with the first arc-shaped air head through a first metal pipe, a first spring pipe and a second metal pipe in sequence, an air suction opening of the centrifugal fan is communicated with an air outlet of the dry type dust collector through a third metal pipe, and an air inlet of the dry type dust collector is communicated with the second arc-shaped air head through a fourth metal pipe, a second spring pipe and a fifth metal pipe in sequence.
The first arc-shaped wind head and the second arc-shaped wind head are identical in structure, and a plurality of ventilation holes are formed in the concave surfaces of the first arc-shaped wind head and the second arc-shaped wind head and are uniformly distributed; the protective covers are arranged on the ventilation holes on the concave surfaces of the first arc-shaped wind head and the second arc-shaped wind head and adopt a screen structure, and the protective covers intercept the coal blocks with large particle size; only a ventilation hole has been seted up on the convex surface of first arc tuyere and second arc tuyere, ventilation hole and the sealed intercommunication of second metal tube on the convex surface of first arc tuyere, ventilation hole and the sealed intercommunication of fifth metal tube on the convex surface of second arc tuyere.
The fan plane where the first arc-shaped wind head and the second arc-shaped wind head are located and the rotation plane where the roller of the coal mining machine is located are both provided with included angles.
The top of the body of the coal mining machine is additionally provided with a refrigerator, a cooling pipe of the refrigerator is spirally wound on a third metal pipe, and the third metal pipe is cooled through the cooling pipe.
The dry dust collector is characterized in that a rubber pipeline is externally connected to a dust discharge port at the bottom of a dust collecting hopper of the dry dust collector, the outlet end of the rubber pipeline extends to the scraper conveyor, a humidifying nozzle is installed at the outlet end pipe orifice of the rubber pipeline, and dust discharged from the outlet end of the rubber pipeline is humidified through the humidifying nozzle and is used for avoiding secondary dust raising.
The utility model has the advantages that:
the utility model discloses an arc pressure-vaccum formula dust removal anti-fogging device suitable for coal face can effectively guarantee coal face's dust removal effect, avoids under the wet-type dust removal because of the too big water smoke pollution that leads to of fog volume.
Drawings
Fig. 1 is a perspective view of an arc-shaped blowing-sucking dust-removing and anti-fog device suitable for a coal face according to the present invention;
fig. 2 is a front view of an arc-shaped blowing-sucking dust-removing and anti-fog device suitable for a coal face according to the present invention;
fig. 3 is a side view of an arc-shaped blowing-sucking dust-removing and anti-fog device suitable for a coal face according to the present invention;
in the figure, 1-a first arc-shaped air head, 2-a second arc-shaped air head, 3-a centrifugal fan, 4-a dry dust collector, 5-a coal mining machine roller, 6-a first switching support, 7-a roller rocker arm, 8-a second switching support, 9-a coal mining machine body, 10-a first metal pipe, 11-a first spring pipe, 12-a third metal pipe, 13-a fourth metal pipe, 14-a second spring pipe, 15-a ventilation hole, 16-a refrigerating machine, 17-a cooling pipe, 18-a rubber pipeline, 19-a humidifying nozzle, 20-a second metal pipe and 21-a fifth metal pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 3, an arc-shaped blowing-sucking dust-removing and anti-fog device suitable for a coal face comprises a first arc-shaped wind head 1, a second arc-shaped wind head 2, a centrifugal fan 3 and a dry dust remover 4; the first arc-shaped wind head 1 and the second arc-shaped wind head 2 are positioned behind the coal mining machine roller 5, the first arc-shaped wind head 1 and the second arc-shaped wind head 2 are symmetrically arranged on the left side and the right side of the coal mining machine roller 5, and the concave surfaces of the first arc-shaped wind head 1 and the second arc-shaped wind head 2 face the coal mining machine roller 5; the first arc-shaped air head 1 is fixedly connected to the roller rocker arm 7 through a first switching bracket 6, and the second arc-shaped air head 2 is fixedly connected to the roller rocker arm 7 through a second switching bracket 8; the dry dust collector 4 is fixedly arranged at the top of the coal mining machine body 9, the centrifugal fan 3 is arranged at the top of the shell of the dry dust collector 4, an air outlet of the centrifugal fan 3 is communicated with the first arc-shaped air head 1 sequentially through the first metal pipe 10, the first spring pipe 11 and the second metal pipe 20, an air suction inlet of the centrifugal fan 3 is communicated with an air outlet of the dry dust collector 4 sequentially through the third metal pipe 12, and an air inlet of the dry dust collector 4 is communicated with the second arc-shaped air head 2 sequentially through the fourth metal pipe 13, the second spring pipe 14 and the fifth metal pipe 21. In this embodiment, the first metal tube 10 and the air outlet of the centrifugal fan 3, the second metal tube 20 and the convex ventilation hole 15 of the first arc-shaped tuyere 1, the third metal tube 12 and the air inlet of the centrifugal fan 3 and the air outlet of the dry dust collector 4, the fourth metal tube 13 and the air inlet of the dry dust collector 4, and the fifth metal tube 21 and the convex ventilation hole 15 of the second arc-shaped tuyere 2 are all fixed by bolts and flanges, and the first spring tube 11 and the first metal tube 10 and the second metal tube 20, and the second spring tube 14 and the fourth metal tube 13 and the fifth metal tube 21 are all fixed by bolts and hoops.
The first arc-shaped wind head 1 and the second arc-shaped wind head 2 are identical in structure, a plurality of ventilation holes 15 (in the embodiment, the number of the ventilation holes 15 is four) are formed in the concave surfaces of the first arc-shaped wind head 1 and the second arc-shaped wind head 2, and the ventilation holes 15 are uniformly distributed; the ventilation holes 15 on the concave surfaces of the first arc-shaped tuyere 1 and the second arc-shaped tuyere 2 are respectively provided with a protective cover (in the embodiment, the protective covers are made of silica gel and are bonded on the ventilation holes 15 through strong glue), the protective covers adopt a screen structure, and the protective covers intercept coal blocks with large particle size; only have seted up one ventilation hole 15 on the convex surface of first arc tuyere 1 and second arc tuyere 2, ventilation hole 15 and the sealed intercommunication of second tubular metal resonator 20 on the convex surface of first arc tuyere 1, ventilation hole 15 and the sealed intercommunication of fifth metal pipe 21 on the convex surface of second arc tuyere 2.
The fan planes of the first arc-shaped wind head 1 and the second arc-shaped wind head 2 and the rotation plane of the coal mining machine roller 5 are respectively provided with an included angle (in the embodiment, an included angle of 45 degrees is adopted).
The top of the coal mining machine body 9 is additionally provided with a refrigerator 16, a cooling pipe 17 of the refrigerator 16 is spirally wound on the third metal pipe 13, and the third metal pipe 13 is cooled through the cooling pipe 17.
A rubber pipeline 18 is connected to the dust discharge port at the bottom of the dust collecting hopper of the dry dust collector 4 in an external mode, the outlet end of the rubber pipeline 18 extends to the scraper conveyor, a humidifying nozzle 19 is installed at the pipe orifice of the outlet end of the rubber pipeline 18, and dust discharged from the outlet end of the rubber pipeline 18 is humidified through the humidifying nozzle 19 and used for avoiding secondary dust raising. In this embodiment, the dry dust collector 4 is provided with a valve at the dust discharge port at the bottom of the dust collecting hopper, and the rubber pipe 18 and the dust discharge port at the bottom of the dust collecting hopper are fixedly connected by bolts and flanges.
The utility model is described with the following drawings in the process of one-time use:
because the quantity of coal-winning machine cylinder 5 is two, consequently the utility model discloses a device also sets up two sets, guarantees that every coal-winning machine cylinder 5 all disposes one set.
Before the drum 5 of the coal mining machine formally cuts the coal wall, the centrifugal fan 3 is started firstly, so that the suction inlet of the centrifugal fan 3 generates negative pressure, further negative pressure is generated inside the third metal pipe 12, the dry type dust collector 4, the fourth metal pipe 13, the second spring pipe 14 and the fifth metal pipe 21, under the action of the negative pressure, the ventilation hole 15 on the convex surface of the second arc-shaped tuyere 2 generates inward suction force, at the moment, air enters the centrifugal fan 3 through the ventilation hole 15 on the convex surface of the second arc-shaped tuyere 2, the fifth metal pipe 21, the second spring pipe 14, the fourth metal pipe 13, the dry type dust collector 4 and the third metal pipe 12, the air with certain pressure passes through the air outlet of the centrifugal fan 3, the first metal pipe 10, the first spring pipe 11 and the second metal pipe 20 in sequence and finally flows out from the ventilation hole 15 on the convex surface of the first arc-shaped tuyere 1, then, the air directly flows through the coal mining machine roller 5 and is finally sucked again by the ventilation holes 15 on the convex surface of the second arc-shaped wind head 2, the circulation of the air flow can be formed in the process, and a coating type air flow field can be generated around the coal mining machine roller 5 through an air flow channel between the first arc-shaped wind head 1 and the second arc-shaped wind head 2.
When the coal mining machine roller 5 formally cuts the coal wall, a large amount of generated dust is directly wrapped and captured by the wrapping type air flow field around the coal mining machine roller 5, then the dust is directly sucked into the ventilation holes 15 on the convex surface of the second arc-shaped wind head 2 along with the air flow, at the moment, the dust-containing air flow enters the dry dust collector 4 through the fifth metal pipe 21, the second spring pipe 14 and the fourth metal pipe 13 in sequence, when the dust-containing air flow passes through the dry dust collector 4, the dust is trapped on the surface of the filter element of the dust collector, the dust-removed air directly flows back to the centrifugal fan 3 through the third metal pipe 12, then sequentially passes through the air outlet of the centrifugal fan 3, the first metal pipe 10, the first spring pipe 11 and the second metal pipe 20 and finally flows out from the ventilation holes 15 on the convex surface of the first arc-shaped wind head 1, and the dust removal is completed through the reciprocating circulation.
The cutting position of the drum 5 of the coal mining machine can be adjusted along with the drum rocker arm 7 in the process of cutting the coal wall, in the process, the first arc-shaped wind head 1 and the second arc-shaped wind head 2 are fixedly connected to the drum rocker arm 7 through the first switching support 6 and the second switching support 8 respectively, so that the first arc-shaped wind head 1 and the second arc-shaped wind head 2 can move synchronously along with the drum rocker arm 7 and the drum 5 of the coal mining machine, at the moment, due to the existence of the first spring pipe 11 and the second spring pipe 14, flexible connections can be formed between the first metal pipe 10 and the second metal pipe 20 and between the fourth metal pipe 13 and the fifth metal pipe 21, and the interference between the first metal pipe 10 and the fourth metal pipe 13 and the drum rocker arm 7 is avoided.
Furthermore, in the dust removal process, in order to reduce the water vapor in the dusty airflow, the refrigerating machine 16 can be started to make the low-temperature refrigerating fluid flow in the cooling pipe 17, because the cooling pipe 17 is spirally wound on the third metal pipe 13, the pipe wall temperature of the third metal pipe 13 can be effectively reduced, when the dusty airflow passes through the third metal pipe 13, the water vapor can be condensed into water drops, the water drops enter the dry dust remover 4 along with the airflow and are intercepted on the surface of the filter element of the dust remover, and flow into the dust collecting hopper under the action of gravity, and finally flow onto the scraper conveyor through the rubber pipe 18.
Along with the continuous increase of the dust removal time, the surface of the filter element in the dry dust remover 4 can deposit thicker and thicker dust, if the dust deposition continues to increase, the subsequent dust removal effect will be affected, and at the moment, the pulse back-blowing function of the dust remover needs to be started for shaking off the dust deposited on the surface of the filter element, so that the dust falls into the dust collecting hopper which is issued.
When the dust in the dust collecting hopper is accumulated to a certain amount, a dust discharge port at the bottom of the dust collecting hopper is opened, so that the dust in the dust collecting hopper is directly discharged onto the scraper conveyor through the rubber pipeline 18 and is carried away from the coal face along with coal blocks on the scraper conveyor, and meanwhile, a humidifying nozzle 19 needs to be opened for water mist spraying to humidify the falling dust, so that the generation of secondary dust raising is avoided.
In this embodiment, the filter element of the dry dust collector 4 is a pleated metal mesh filter cartridge, which can completely resist flame and static electricity, the filter precision of the filter element is 4 microns, the filter efficiency reaches 99.9%, and the filter element has the characteristics of small filter resistance, good wear resistance and long service life (up to 2 years).
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides an arc pressure-vaccum formula dust removal anti-fogging device suitable for coal face which characterized in that: comprises a first arc-shaped air head, a second arc-shaped air head, a centrifugal fan and a dry dust remover; the first arc-shaped air head and the second arc-shaped air head are positioned behind the coal mining machine roller, the first arc-shaped air head and the second arc-shaped air head are symmetrically arranged on the left side and the right side of the coal mining machine roller, and the concave surfaces of the first arc-shaped air head and the second arc-shaped air head face the coal mining machine roller; the first arc-shaped air head is fixedly connected to the roller rocker arm through a first switching bracket, and the second arc-shaped air head is fixedly connected to the roller rocker arm through a second switching bracket; the dry type dust collector fixing frame is arranged at the top of the machine body of the coal mining machine, the centrifugal fan is arranged at the top of the shell of the dry type dust collector, an air outlet of the centrifugal fan is communicated with the first arc-shaped air head through a first metal pipe, a first spring pipe and a second metal pipe in sequence, an air suction opening of the centrifugal fan is communicated with an air outlet of the dry type dust collector through a third metal pipe, and an air inlet of the dry type dust collector is communicated with the second arc-shaped air head through a fourth metal pipe, a second spring pipe and a fifth metal pipe in sequence.
2. The arc-shaped blowing-sucking dust and fog removing device suitable for the coal face as claimed in claim 1, wherein: the first arc-shaped wind head and the second arc-shaped wind head are identical in structure, and a plurality of ventilation holes are formed in the concave surfaces of the first arc-shaped wind head and the second arc-shaped wind head and are uniformly distributed; the protective covers are arranged on the ventilation holes on the concave surfaces of the first arc-shaped wind head and the second arc-shaped wind head and adopt a screen structure, and the protective covers intercept the coal blocks with large particle size; only a ventilation hole has been seted up on the convex surface of first arc tuyere and second arc tuyere, ventilation hole and the sealed intercommunication of second metal tube on the convex surface of first arc tuyere, ventilation hole and the sealed intercommunication of fifth metal tube on the convex surface of second arc tuyere.
3. The arc-shaped blowing-sucking dust and fog removing device suitable for the coal face as claimed in claim 1, wherein: the fan plane where the first arc-shaped wind head and the second arc-shaped wind head are located and the rotation plane where the roller of the coal mining machine is located are both provided with included angles.
4. The arc-shaped blowing-sucking dust and fog removing device suitable for the coal face as claimed in claim 1, wherein: the top of the body of the coal mining machine is additionally provided with a refrigerator, a cooling pipe of the refrigerator is spirally wound on a third metal pipe, and the third metal pipe is cooled through the cooling pipe.
5. The arc-shaped blowing-sucking dust and fog removing device suitable for the coal face as claimed in claim 1, wherein: the dry dust collector is characterized in that a rubber pipeline is externally connected to a dust discharge port at the bottom of a dust collecting hopper of the dry dust collector, the outlet end of the rubber pipeline extends to the scraper conveyor, a humidifying nozzle is installed at the outlet end pipe orifice of the rubber pipeline, and dust discharged from the outlet end of the rubber pipeline is humidified through the humidifying nozzle and is used for avoiding secondary dust raising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020429780.2U CN212003176U (en) | 2020-03-30 | 2020-03-30 | Arc blowing-sucking type dust removal anti-fog device suitable for coal face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020429780.2U CN212003176U (en) | 2020-03-30 | 2020-03-30 | Arc blowing-sucking type dust removal anti-fog device suitable for coal face |
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| Publication Number | Publication Date |
|---|---|
| CN212003176U true CN212003176U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020429780.2U Active CN212003176U (en) | 2020-03-30 | 2020-03-30 | Arc blowing-sucking type dust removal anti-fog device suitable for coal face |
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| Country | Link |
|---|---|
| CN (1) | CN212003176U (en) |
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2020
- 2020-03-30 CN CN202020429780.2U patent/CN212003176U/en active Active
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