CN209959282U - Mining dust exhausting fan - Google Patents

Mining dust exhausting fan Download PDF

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Publication number
CN209959282U
CN209959282U CN201920606276.2U CN201920606276U CN209959282U CN 209959282 U CN209959282 U CN 209959282U CN 201920606276 U CN201920606276 U CN 201920606276U CN 209959282 U CN209959282 U CN 209959282U
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China
Prior art keywords
suction
section
amplifier
suction section
drainage chamber
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CN201920606276.2U
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Chinese (zh)
Inventor
任万兴
董小伟
赵乾坤
温德华
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XUZHOU BOTAI MINE SAFETY TECHNOLOGY Co Ltd
Xuzhou Jian Technology Co Ltd
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XUZHOU BOTAI MINE SAFETY TECHNOLOGY Co Ltd
Xuzhou Jian Technology Co Ltd
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Abstract

The utility model discloses a mining dust exhausting fan, include: a suction section and an amplification section which form a Venturi tube structure, wherein a drainage chamber is also arranged between the suction section and the amplification section; the drainage chamber comprises: the amplifier component I and the amplifier component II; the nozzle is arranged at the center of the suction section and is directed from the suction section to the drainage chamber; the top of the additive feed box is provided with a material inlet for feeding. The utility model has the advantages that the vacuum environment formed by the Kangda effect high-pressure gas is utilized to suck the dust into the high-pressure mixed water for recycling to clean the dust. Meanwhile, the structure has no electric element, the management difficulty and the danger coefficient of the dust removal fan are reduced, and the work under a high gas environment is met.

Description

Mining dust exhausting fan
Technical Field
The utility model relates to a mining equipment field, concretely relates to mining dust exhausting fan.
Background
Mine dust is one of main disasters in a coal mine, workers are easy to suffer from pneumoconiosis after working for a long time in a dense dust environment, and explosion accidents are easily caused by dust accumulation, so that the safety production of the mine is seriously threatened.
The dust remover is the main dust-settling equipment of the fully-mechanized excavating face, but the dry dust remover can not remove toxic and harmful components in the gas, has generally large volume and is inconvenient to install and move; the wet dust collector has large water consumption, the power device generally adopts an electric component, the noise is large during the work, and the electric safety hidden trouble also exists for a high gas mine. In order to solve the problem that above-mentioned current dust exhausting fan exists, this application provides a new mining dust exhausting fan.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving: the dry dust collector can not filter toxic and harmful components; the wet dust collector has the problems of large water consumption, large noise, potential safety hazard to mines in a high gas environment and the like.
In order to achieve the above object, the utility model adopts the following technical scheme: a mining dust exhausting fan, comprising: a suction section and an amplification section which form a Venturi tube structure, wherein a drainage chamber is also arranged between the suction section and the amplification section;
the included angle alpha between the side edge of the suction section and the central axis ranges from 10 degrees to 30 degrees, and the included angle beta between the side surface of the amplification section and the central axis ranges from 5 degrees to 7 degrees;
the drainage chamber comprises: the amplifier comprises a circular amplifier assembly I with two through ends and an amplifier assembly II arranged on the outer contour of the amplifier assembly I;
the amplifier assembly I comprises: a plurality of exhaust holes and exchange cavities which are annularly and uniformly distributed on the amplifier component I;
one end of the exhaust hole is communicated with the exchange cavity, and the other end of the exhaust hole is communicated with the interior of the drainage chamber;
the inner wall of the amplifier component II and the outer wall of the amplifier component I surround to form an exchange cavity, a plurality of exhaust ports communicated with the exchange cavity are symmetrically arranged outside the amplifier component II, the exhaust ports are connected with an external high-pressure air pipe, a barometer is arranged on the high-pressure air pipe, and the barometer is fixed on the valve block;
the valve block further comprises: the device comprises a water inlet of a water path, a water pressure gauge arranged on the water path, a suction valve arranged on the water path, a suction pipe which is connected with the suction valve and the free end of which extends into the bottom of an additive material box, and a spray pipe which is connected with the suction valve and penetrates through the outer wall of a suction section, wherein the free end of the spray pipe is provided with a nozzle;
the nozzle is arranged at the central position of the suction section and is oriented towards the drainage chamber from the suction section;
the top of the additive feed box is provided with a material inlet for feeding.
Furthermore, the large-diameter end of the suction section is connected with the telescopic air duct.
The utility model discloses an embodiment: the large-diameter end of the amplifying section is connected with a filtering device for blocking water mist from overflowing, and the filtering device is connected with an air pipe.
Furthermore, the filtering device comprises a shell and a plurality of layers of filter screens arranged in the shell, and a drain valve is arranged at the bottom of the filtering device.
Further, the suction valve includes: a water path connected with the water inlet 71, an additive sucking pipe 92, a negative pressure nozzle 93.1, a mixing cavity 93.2 and a drainage port 93.3; and the diameter of the negative pressure nozzle 93.1 < the diameter of the mixing cavity 93.2 < the diameter of the drainage port 93.3
Compared with the prior art, the utility model discloses following beneficial effect has:
the dust is sucked in by utilizing a vacuum environment formed by the Kangda effect high-pressure gas and then cleaned by utilizing high-pressure mixed water. Meanwhile, the structure has no electric element, the management difficulty and the danger coefficient of the dust removal fan are reduced, and the work under a high gas environment is met.
Drawings
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a schematic view of the inside of the structure of the present invention;
FIG. 3 is a schematic diagram of the structure of the amplifier module I and the amplifier module II after being connected;
fig. 4 is a schematic structural diagram of the middle amplifier module i of the present invention:
FIG. 5 is a schematic structural diagram of an amplifier module II according to the present invention;
FIG. 6 is a schematic structural view of the interior of the valve block of the present invention;
FIG. 7 is a schematic view of the internal structure of the middle suction valve of the present invention;
fig. 8 is a graph showing the variation curve of the inlet air speed (α is 3 °) when the inclination angle of the air outlet is 3 ° in the present invention;
fig. 9 is a graph showing the variation curve of the outlet wind speed when the inclination angle of the air outlet is 3 ° (α is 3 °), according to the present invention;
fig. 10 is a graph showing a change in suction rate when the inclination angle of the air outlet is 3 ° (α is 3 °), according to the present invention;
fig. 11 is a graph showing the variation curve of the inlet wind speed (α is 5 °) when the inclination angle of the air outlet is 5 ° in the present invention;
fig. 12 is a graph showing the variation curve of the outlet wind speed (α is 5 °) when the inclination angle of the air outlet is 5 ° in the present invention;
fig. 13 is a graph showing a change in suction rate when the inclination angle of the air outlet is 5 ° (α is 5 °), according to the present invention;
fig. 14 is a graph showing the variation curve of the inlet wind speed (α is 7 °) when the inclination angle of the air outlet is 7 ° in the present invention;
fig. 15 is a graph showing the variation curve of the outlet wind speed when the inclination angle of the air outlet is 7 ° (α is 7 °), according to the present invention;
fig. 16 is a graph showing a change in suction rate when the inclination angle of the air outlet is 7 ° (α is 7 °) according to the present invention.
In the figure, a telescopic air duct 1, a suction section 2, a drainage chamber 3, an additive feed box 30, an amplification section 4, a filter device 5, an air duct 51, a blow-off valve 52, a filter screen 53, an amplifier assembly I60, an exhaust hole 60.1, an exchange cavity 60.2, an amplifier assembly II 61, an exhaust port 61.1, a valve block 7, a water inlet 71, a water pressure gauge 72, a high-pressure air inlet 81, a barometer 82, a material inlet 91, a material suction pipe 92, a material suction valve 93, a negative pressure nozzle 93.1, a mixing cavity 93.2, a drainage port 93.3, a spray pipe 94 and a nozzle 95.
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 7, a mining dust removal fan comprises: the suction section 2 and the amplification section 4 which form a Venturi tube structure, the included angle alpha between the side edge of the suction section 2 and the central axis ranges from 10 degrees to 30 degrees, and the included angle beta between the side surface of the amplification section 4 and the central axis ranges from 5 degrees to 7 degrees; a drainage chamber 3 is also provided between the suction section 2 and the amplification section 4, the drainage chamber 3 comprising: the amplifier comprises a circular amplifier assembly I60 with two through ends and an amplifier assembly II 61 arranged on the outer contour of the amplifier assembly I60, wherein the drainage chamber 3 is arranged in the center of the amplifier assembly I60. The amplifier module i 60 includes: a plurality of exhaust holes 60.1 and exchange chambers 60.2 which are annularly and uniformly distributed on the amplifier assembly I60; one end of the exhaust hole 60.1 is communicated with the exchange cavity 60.2, and the other end is communicated with the interior of the drainage chamber 3.
The inner wall of the amplifier component II 61 and the outer wall of the amplifier component I60 are surrounded to form an exchange cavity 60.2, the exchange cavity 60.2 is an annular hollow cavity, high-pressure air can flow rapidly, a plurality of air outlets 61.1 communicated with the exchange cavity 60.2 are symmetrically arranged outside the amplifier component II 61, the air outlets 61.1 are connected with an external high-pressure air pipe, an air pressure gauge 82 is arranged on the high-pressure air pipe, the air pressure gauge 82 is fixed on the valve block 7, and the air outlet holes 60.1 are drilled obliquely.
As shown in fig. 1, 2 and 6, the valve block 7 further includes: the device comprises a water inlet 71 of a water path, a water pressure gauge 72 arranged on the water path, a suction valve 93 arranged on the water path, a suction pipe 92 connected with the suction valve 93 and with a free end extending into the bottom of an additive tank 30, and a spray pipe 94 connected with the suction valve 93 and penetrating through the outer wall of a suction section 2, wherein a nozzle 95 is arranged at the free end of the spray pipe 94; the nozzle 95 is arranged in the central position of the suction section 2 and is directed from the suction section 2 towards the drainage chamber 3; the top of the additive tank 30 is provided with a material inlet 91 for feeding.
As shown in fig. 7, the suction valve 93 has a structure including: a water path connected with the water inlet 71, an additive sucking pipe 92, a negative pressure nozzle 93.1, a mixing cavity 93.2 and a drainage port 93.3. Structurally, the diameter arrangement sequence of the three is as follows: the diameter of the negative pressure spout 93.1 < the diameter of the mixing chamber 93.2 < the diameter of the drainage opening 93.3. High-pressure water directly reaches the negative pressure nozzle 93.1 after entering from the water inlet 71; because the diameter of the negative pressure nozzle 93.1 is small and the flow speed is high, a certain negative pressure is formed in the mixing cavity 93.2, and the additive can be sucked out of the additive feed box 30 through the suction pipe 92 by utilizing the negative pressure; the final mixed liquid flows out of the drainage port 93.3 to the spray tube 94 and the nozzle 95. In this way, not only is automatic mixing of the additive into the water achieved, but the additive is then ejected from the nozzle 95 to facilitate dust removal.
The utility model discloses a theory of operation:
the utility model discloses at the during operation, at first open material entry 91, pour into liquid additive toward the additive workbin in 30 interior, the high-pressure gas is gone into toward the inside high-pressure gas of device to the import 81 of rethread high pressure gas, these high-pressure gases are after reacing exchange chamber 60.2, again from exhaust eye 60.1 blowout, according to the conda effect, high-pressure gas can directly be attached to on the inner wall of section 4 of enlarging after through spraying, 3 central point in drainage room put this moment and formed the negative pressure, this negative pressure can be inhaled the outside gas that has the dust, avoid using the motor through utilizing the conda effect, the potential safety hazard in the high gas underground has also been stopped. In order to settle the sucked dust, high pressure water is introduced into the water inlet 71, and after passing through the suction valve 93, the suction pipe 92 sucks the liquid additive by using the negative pressure formed by the high-speed flowing water, and then the liquid additive is mixed with the high pressure water. When the water mixed with the additive is sprayed out from the center of the drainage chamber 3 through the nozzle 95, the purpose of removing dust is achieved.
In this process, the high pressure gas is not used only to create the negative pressure, but also to combine with the additive-mixed spray to create an efficient dust-reducing mist.
In order to make the sucked dust directional, the large diameter end of the suction section 2 is connected with the telescopic wind tube 1. By means of the stretching and the steering of the air duct 1, the suction is more purposeful and directional.
The design of the included angle alpha and the included angle beta of the utility model needs to consider the following factors:
the design of the inclination angle of the air outlet is not only beneficial to the radial flow of fluid and the reduction of momentum loss as much as possible, but also prevents air flow from separating from the wall surface. The smaller the inclination angle of the air outlet is, the easier the air flow adheres to the wall, the larger the friction resistance of the corresponding wall surface is, the smaller the air flow velocity is, and the larger the air flow velocity is, the larger the entrainment velocity is, and the stronger the entrainment capacity is. The influence of air inlet and outlet inclination angle to the suction rate is studied to reference the pressure of the actual use of the underground compressed air pipe, the utility model discloses contrast the measurement experiment result with the suction rate. The specific suction rate is defined as
In the formula: qSuction device-volume flow of the suction air stream, m3/min;
QPress and pressVolume flow of compressed air, m3/min;
S-area, m2
v-wind speed, m/s.
The following experiments were carried out, the results of which are shown in the following Table 1:
influence of inclination angles of air inlet and air outlet on suction rate
As can be seen from fig. 8 and 11, when the outlet inclination angle does not exceed 3 °, the model inlet wind speed tends to increase first and then decrease as the inclination angle of the air inlet increases. Along with the increase of the inclination angle of the air inlet, the length of the model suction section is continuously reduced, but the suction range of the air flow before the inlet is enlarged, the suction strength per unit area is reduced, and meanwhile, the friction resistance of the sucked air flow after being contacted with the wall surface is increased. When the suction section is too long (the inlet inclination angle is 3 degrees), the negative pressure generated by the coanda effect at the inlet of the model is small, so that the inlet air speed is low, and when the suction section is too short (the inlet inclination angle exceeds 15 degrees, the suction capacity of the inlet per unit area is weak, and the inlet air speed is gradually reduced), but when the outlet inclination angle is increased to a certain degree (7 degrees), as shown in fig. 3-10, the inlet air speed keeps a linear descending trend, which indicates that when the outlet inclination angle is too large, the influence of the length of the suction section on the inlet air speed is small, and the size of the inlet air speed is mainly determined by the size of the negative pressure generated.
As can be seen from fig. 9 and 12, when the outlet inclination angle does not exceed 3 °, the model outlet wind speed also shows a trend of increasing first and then decreasing as the inclination angle of the air inlet increases, and when the outlet inclination angle increases to 7 °, as shown in fig. 3 to 11, the outlet wind speed keeps a linear decreasing trend, and it can be seen that the trend of the outlet wind speed changing with the inclination angle is substantially the same as that of the inlet wind speed.
As can be seen from fig. 10, 13 and 16, the variation trend of the suction rate with the inclination angle is substantially the same as the wind speed at the inlet and outlet, but the suction rate value corresponding to the same inlet inclination angle gradually decreases as the inclination angle of the outlet increases.
As shown in the attached figure 2, when the utility model is used, the mixed fog drops formed by mixing the high-pressure gas and the high-pressure spray have great kinetic energy, and can be directly sprayed out from the amplifying section 4 in general, which can lead the dust not to be effectively treated. Therefore, the large diameter end of the enlarged section 4 can be connected to a filter device 5 for blocking the water mist from overflowing, and the filter device 5 is connected to the air pipe 51. And the structure of the filtering means 5 may be: comprises a shell, a plurality of layers of filter screens 53 arranged in the shell, and a drain valve 52 arranged at the bottom of the filter device 5. The water droplets mixed with the dust directly drop into the housing after hitting the filter screen 53, and then the sewage is discharged by opening the blow-off valve 52.

Claims (5)

1. The utility model provides a mining dust exhausting fan which characterized in that includes: a suction section (2) and an amplification section (4) which form a Venturi tube structure, and a drainage chamber (3) is arranged between the suction section (2) and the amplification section (4);
the included angle alpha between the side edge of the suction section (2) and the central axis ranges from 10 degrees to 30 degrees, and the included angle beta between the side surface of the amplification section (4) and the central axis ranges from 5 degrees to 7 degrees;
the drainage chamber (3) comprises: the amplifier comprises a circular amplifier assembly I (60) with two through ends and an amplifier assembly II (61) arranged on the outer contour of the amplifier assembly I (60);
the amplifier module I (60) includes: a plurality of exhaust holes (60.1) and exchange cavities (60.2) which are annularly and uniformly distributed on the amplifier component I (60);
one end of the exhaust hole (60.1) is communicated with the exchange cavity (60.2), and the other end is communicated with the interior of the drainage chamber (3);
the inner wall of the amplifier component II (61) and the outer wall of the amplifier component I (60) are encircled to form an exchange cavity (60.2), a plurality of exhaust ports (61.1) communicated with the exchange cavity (60.2) are symmetrically arranged outside the amplifier component II (61), the exhaust ports (61.1) are connected with an external high-pressure air pipe, a barometer (82) is arranged on the high-pressure air pipe, and the barometer (82) is fixed on the valve block (7);
the valve block (7) further comprises: the device comprises a water inlet (71) of a water path, a water pressure gauge (72) arranged on the water path, a suction valve (93) arranged on the water path, a suction pipe (92) connected with the suction valve (93) and with a free end extending into the bottom of an additive material box (30), and a spray pipe (94) connected with the suction valve (93) and penetrating through the outer wall of a suction section (2), wherein a nozzle (95) is arranged at the free end of the spray pipe (94);
the nozzle (95) is arranged at the central position of the suction section (2) and is oriented towards the drainage chamber (3) from the suction section (2);
the top of the additive material box (30) is provided with a material inlet (91) for feeding.
2. The mining dust removal fan of claim 1, characterized in that: the large-diameter end of the suction section (2) is connected with the telescopic air duct (1).
3. The mining dust removal fan of claim 1, characterized in that: the large-diameter end of the amplifying section (4) is connected with a filtering device (5) for blocking water mist from overflowing, and the filtering device (5) is connected with an air pipe (51).
4. The mining dust removal fan of claim 3, characterized in that: the filtering device (5) comprises a shell and a plurality of layers of filter screens (53) arranged in the shell, and a drain valve (52) is arranged at the bottom of the filtering device (5).
5. The mining dust removal fan of claim 1, characterized in that: the suction valve (93) comprises: a water path connected with the water inlet (71), an additive sucking pipe (92), a negative pressure nozzle (93.1), a mixing cavity (93.2) and a drainage port (93.3); and the diameter of the negative pressure nozzle (93.1) is less than the diameter of the mixing cavity (93.2) is less than the diameter of the drainage port (93.3).
CN201920606276.2U 2019-04-29 2019-04-29 Mining dust exhausting fan Active CN209959282U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920606276.2U CN209959282U (en) 2019-04-29 2019-04-29 Mining dust exhausting fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920606276.2U CN209959282U (en) 2019-04-29 2019-04-29 Mining dust exhausting fan

Publications (1)

Publication Number Publication Date
CN209959282U true CN209959282U (en) 2020-01-17

Family

ID=69243869

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920606276.2U Active CN209959282U (en) 2019-04-29 2019-04-29 Mining dust exhausting fan

Country Status (1)

Country Link
CN (1) CN209959282U (en)

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