CN111365058A - Self-moving type double-pressure ventilation device for strip mine - Google Patents
Self-moving type double-pressure ventilation device for strip mine Download PDFInfo
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- CN111365058A CN111365058A CN202010158834.0A CN202010158834A CN111365058A CN 111365058 A CN111365058 A CN 111365058A CN 202010158834 A CN202010158834 A CN 202010158834A CN 111365058 A CN111365058 A CN 111365058A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 30
- 239000000428 dust Substances 0.000 claims abstract description 23
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 238000012876 topography Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 8
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 239000003245 coal Substances 0.000 abstract description 10
- 239000003344 environmental pollutant Substances 0.000 abstract description 8
- 231100000719 pollutant Toxicity 0.000 abstract description 8
- 238000003756 stirring Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 4
- 238000005065 mining Methods 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000003517 fume Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
- E21F1/06—Duct connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a self-moving double-pressure ventilation device for an open pit, belonging to the field of ventilation equipment for mining; the device is mainly used in a deep concave surface mine stope, wherein the negative pressure ventilator, the negative pressure air inlet cylinder and the negative pressure air outlet cylinder are used for discharging pollutants such as dust, blast smoke and the like generated in the surface mine stope to the outside of the stope, so that the air quality and visibility in the stope are improved; stirring the air flow above the opencast coal mine by using a positive-pressure ventilator, a positive-pressure air inlet barrel and a positive-pressure air outlet barrel to play a certain role in purifying the haze above the opencast coal mine; the device implements comprehensive ventilation and dust removal on the strip mine stope through the two functions, achieves the aim of effectively improving the atmospheric environment of the strip mine production site, and meets the requirement of safe and efficient production of the strip mine.
Description
Technical Field
The invention belongs to the field of ventilation equipment for mining, relates to a strip mine dust removal and atmosphere purification device utilizing positive and negative pressure ventilation, and particularly relates to a self-moving type double-pressure strip mine ventilation device.
Background
So far, in the production of strip mines at home and abroad, a deep open pit mine stope is influenced by blasting vibration and excavation transportation work, a large amount of dust, blast fume and other harmful gases are generated, and the atmospheric pollution is extremely serious. In the season of lower temperature, dust and other pollutants around the mine are gathered in the pit in a unified way due to spontaneous combustion of the coal bed, operation of coal mining and transporting facilities, unsmooth air flow and the like in the open pit mine stope, so that a local small inverse temperature layer is easy to generate, and the mine is covered above the open pit mine like a thick cover. Meanwhile, various pollutants in the mine pit are continuously generated, and are accumulated more and more, the pollutants are often developed into serious air pollution finally, so that the visibility of the air in an open-pit mine stope is extremely poor, sometimes, even dozens of meters away, serious production safety accidents are easy to happen, the pollutants floating in the atmosphere form an aerosol state, the particles are loose, the weight is light, the water spraying dust settling effect in common use is not obvious, the haze forming process is aggravated, and serious harm is caused to the body health of safety production and field workers.
Foreign deep open mines have by far relied more on natural ventilation and have focused primarily on improving equipment operating room conditions and individual protection. In the aspect of dust prevention, dust removal of drilling machines at home and abroad is mainly performed from the aspects of improving the structure of drilling equipment, dry dust collection, wet dust removal and the like, and the dust removal device has a certain effect in the aspect of drilling dust removal. The comprehensive ventilation and dust removal work of the strip mine stope is influenced by a plurality of factors, and an effective ventilation method, a ventilation facility which can be comprehensively popularized and a proper ventilation system are not available.
Therefore, the application aims at the production conditions of the strip mine, applies a scientific and reasonable ventilation method, and the development design application technology and device of the system to comprehensively ventilate and remove dust in the strip mine stope, so that the aim of effectively improving the atmospheric environment of the production site of the strip mine is fulfilled, and the requirement of safe and efficient production of the strip mine is met.
Disclosure of Invention
The invention aims to provide a self-moving type double-pressure ventilation device for an open-pit mine, which is mainly used for the open-pit mine and is used for discharging pollutants such as dust, blast fume and the like generated in a stope of the open-pit mine to the outside of the stope, so that the air quality and the visibility in the stope are improved; in addition, the device can also stir the air flow above the opencast coal mine, and plays a certain role in purifying the haze above the opencast coal mine; the device implements comprehensive ventilation and dust removal on the strip mine stope through the two functions, achieves the aim of effectively improving the atmospheric environment of the strip mine production site, and meets the requirement of safe and efficient production of the strip mine.
The technical scheme adopted by the invention is as follows: a self-moving double-pressure strip mine ventilation device comprises a self-moving device, a fan mounting frame, a negative pressure ventilator, a positive pressure ventilator, a negative pressure air inlet cylinder, a negative pressure air outlet cylinder, a positive pressure air inlet cylinder, a positive pressure air outlet cylinder and a generator;
the self-moving device has the main function of carrying the main components and can conveniently move positions in the strip mine; a fan mounting frame is arranged in front of a cab of the self-moving device, the fan mounting frame is provided with an upper layer and a lower layer, a negative pressure ventilator is arranged on the lower layer, and a positive pressure ventilator is arranged on the upper layer; the negative pressure ventilator and the positive pressure ventilator adopt mine explosion-proof axial flow fans; the right side of the negative pressure ventilator is provided with an air inlet, a negative pressure air inlet barrel extending towards the front right is connected to the air inlet, and the negative pressure air inlet barrel faces to one side of the cab of the self-moving device and exceeds the front right side of the self-moving device; the right side port of the negative pressure air inlet cylinder is supported and fixed through a first fixing frame, so that the right side port of the negative pressure air inlet cylinder faces to the right front;
the left air outlet port of the negative pressure ventilator is connected with a negative pressure air outlet barrel, the negative pressure air outlet barrel adopts a bendable flexible air barrel which extends to a designated area of a strip mine and is used for sending mine dust sucked by the negative pressure ventilator out of a stope;
the left side of the positive pressure ventilator is an air inlet, and the right side of the positive pressure ventilator is an air outlet; the air inlet is connected with a positive pressure air inlet cylinder extending leftwards and upwards, the air outlet is connected with a positive pressure air outlet cylinder extending rightwards and upwards, the positive pressure air inlet cylinder is a horn-shaped rectifier, and the upward axial angle of an opening is more than 45 degrees and less than 90 degrees;
the generator is also arranged on the self-moving device and at the rear side of the cab and used for driving the positive-negative pressure ventilator.
Preferably, the self-moving device may be an existing hydraulic electric excavator.
One of the schemes of the first fixing frame is as follows: the upper ends of the two fixed supporting rods are symmetrically arranged on the front side and the rear side of a right side port of the negative pressure air inlet cylinder, the lower ends of the two fixed supporting rods are fixed on the self-moving device, and the right side port of the negative pressure air inlet cylinder extends towards the right front side through the two fixed supporting rods.
The better scheme is as follows: the structure of the existing hydraulic electric excavator is utilized, the large arm, the bucket and the like of the existing hydraulic electric excavator are replaced by a negative pressure air inlet cylinder, and a reserved large arm oil cylinder is connected with an air inlet at the right side of the negative pressure air inlet cylinder, so that the vertical height adjustment of the air inlet at the right side of the air inlet cylinder is realized; the negative pressure air inlet cylinder adopts a flexible air cylinder, a right air inlet of the negative pressure air inlet cylinder is provided with a circular ring made of hard materials, and the left side and the right side of the circular ring are symmetrically provided with short connecting rods extending outwards; the upper end of an original oil cylinder of the hydraulic electric excavator is connected to the short connecting rod, the lower end of the oil cylinder is kept unchanged in the original structure, the lower end of the oil cylinder can be rotatably positioned and can stretch along with the rotation of the oil cylinder, and therefore the vertical height and the extension length of a right air inlet of the negative pressure air inlet cylinder are controlled.
Further optimization, the height of the positive pressure air outlet cylinder is adjustable; one specific embodiment is as follows: the positive pressure air outlet cylinder adopts a bendable flexible air cylinder, a telescopic positioning support rod support is arranged outside the air outlet end of the positive pressure air outlet cylinder, the lower end of the support rod is fixed on the self-moving device, and the upper end of the support rod is connected with the air outlet end of the positive pressure air outlet cylinder; the height of the positive pressure air outlet cylinder is adjusted by changing the length of the supporting rod; the support rod is manually operated or electrically operated.
Preferably, the generator is a diesel generator.
Further, a shock absorber is arranged at the bottom of the fan mounting frame; the generator is also provided with a damping device to damp vibration during operation.
Furthermore, crawler-type mobile equipment is selected for use from the device that moves, and moves equipment chassis certainly and set up four scalable landing legs, and four landing legs can provide stable support for this device during operation according to the topography.
The invention has the beneficial effects that: the invention provides a self-moving type double-pressure strip mine ventilation device which is mainly used in a deep concave strip mine stope, wherein a negative pressure ventilator, a negative pressure air inlet cylinder and a negative pressure air outlet cylinder are used for discharging pollutants such as dust, blast smoke and the like generated in the strip mine stope to the outside of the stope, so that the air quality and the visibility in the stope are improved; stirring the air flow above the opencast coal mine by using a positive-pressure ventilator, a positive-pressure air inlet barrel and a positive-pressure air outlet barrel to play a certain role in purifying the haze above the opencast coal mine; the device implements comprehensive ventilation and dust removal on the strip mine stope through the two functions, achieves the aim of effectively improving the atmospheric environment of the strip mine production site, and meets the requirement of safe and efficient production of the strip mine.
Drawings
Fig. 1 is a front perspective view of the device.
Fig. 2 is a rear perspective view of the device.
Fig. 3 is a schematic structural view of a conventional hydraulic electric excavator.
Fig. 4 is a schematic view of a connection structure of a right port of the negative pressure air inlet cylinder.
In the figure: the automatic moving device comprises a self-moving device 1, a cab 101, an oil cylinder 102, a fan mounting frame 2, a negative pressure ventilator 3, a positive pressure ventilator 4, a negative pressure air inlet cylinder 5, a negative pressure air outlet cylinder 6, a positive pressure air inlet cylinder 7, a positive pressure air outlet cylinder 8, a generator 9, a first fixing frame 10, a ring 11, a short connecting rod 12 and a second fixing frame 13.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific examples, which are set forth below for the purpose of illustrating the technical solutions of the present invention and are not to be construed as limiting the same.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1-2, the self-moving type double-pressure ventilation device for the strip mine mainly comprises a self-moving device 1, a fan installation frame 2, a negative pressure ventilator 3, a positive pressure ventilator 4, a negative pressure air inlet cylinder 5, a negative pressure air outlet cylinder 6, a positive pressure air inlet cylinder 7, a positive pressure air outlet cylinder 8 and a generator 9.
The self-moving device 1 has the main function of carrying the main components and can conveniently move the position in the open pit mine; the self-moving device 1 can be simply modified by adopting the existing hydraulic electric excavator, as shown in fig. 3, the structural schematic diagram of the existing hydraulic electric excavator is shown, and the main modification is to remove the parts of the boom, the bucket and the like marked by a in fig. 3 and reserve the structure of the boom cylinder 102 and the like for controlling the rotation of the boom.
As shown in fig. 1, a fan mounting rack 2 is arranged in front of a cab 101 of a self-moving device 1, the fan mounting rack 2 has an upper layer and a lower layer, the lower layer is provided with a negative pressure ventilator 3, and the upper layer is provided with a positive pressure ventilator 4; the negative pressure ventilator 3 and the positive pressure ventilator 4 adopt mine explosion-proof axial flow fans; wherein, the right side of the negative pressure ventilator 3 is an air inlet, the air inlet is connected with a negative pressure air inlet barrel 5 extending towards the front right, the negative pressure air inlet barrel 5 faces one side of the cab 101 of the self-moving device 1 and exceeds the front right side of the self-moving device 1; the right port of the negative pressure air inlet cylinder 5 is supported and fixed by a first fixing frame 10, so that the right port of the negative pressure air inlet cylinder 5 faces the right front.
The first scheme of the first fixing frame 10 is as follows: the upper ends of the two fixed support rods are symmetrically arranged on the front side and the rear side of a right side port of the negative pressure air inlet cylinder 5, the lower ends of the two fixed support rods are fixed on the self-moving device 1, and the right side port of the negative pressure air inlet cylinder 5 extends towards the right front through the two fixed support rods; this structure makes the right side air inlet of the negative pressure air inlet cylinder 5 unadjustable.
Further optimization, the right air inlet of the negative pressure air inlet cylinder 5 can be conveniently adjusted in height up and down, so that the air inlet can be aligned to a smoke-dense area; one specific embodiment is as follows: by utilizing the structure of the existing hydraulic electric excavator, the parts of a big arm, an excavator bucket and the like marked by A in the figure 3 are replaced by the negative pressure air inlet cylinder 5, and the reserved big arm oil cylinder 102 is connected with the right air inlet of the negative pressure air inlet cylinder 5, so that the vertical height adjustment of the right air inlet of the air inlet cylinder is realized; as shown in the schematic perspective view of fig. 4, firstly, the negative pressure air inlet drum 5 needs to adopt a flexible air duct, a right air inlet of the negative pressure air inlet drum 5 is provided with a circular ring 11 made of hard material, and the left and right sides of the circular ring 11 are symmetrically provided with short connecting rods 12 extending outwards; the upper end of an original oil cylinder 102 of the hydraulic electric excavator is connected to the short connecting rod 12, the lower end of the oil cylinder 102 keeps the original structure unchanged, and the lower end of the oil cylinder 102 can be rotatably positioned and can stretch along with the rotation of the oil cylinder 102, so that the vertical height and the extension length of a right air inlet of the negative pressure air inlet cylinder 5 are controlled; in fig. 4, the first scheme of the first fixing frame 10 is to replace two oil cylinders 102 with two fixing support rods.
As shown in fig. 1, a left air outlet port of the negative pressure ventilator 3 is connected with a negative pressure air outlet cylinder 6, the negative pressure air outlet cylinder 6 adopts a bendable flexible air cylinder, and the bendable flexible air cylinder extends to a designated area of a strip mine and is used for sending mine dust sucked by the negative pressure ventilator 3 out of a stope; fig. 1 shows only one wind tube, the specific length needs to be arranged according to actual needs, when the length of the negative pressure wind outlet tube 6 is longer, for example, 50 m or longer, the negative pressure wind outlet tube 6 is fixed on the ground by the second fixing frame 13 at a distance of 10-30 m, the fixing frame is not limited in form, and the position of the wind tube can be fixed.
As shown in fig. 1, the positive pressure ventilator 4 has an air inlet on the left side and an air outlet on the right side; the air inlet is connected with a positive pressure air inlet cylinder 7 extending leftwards and upwards, the air outlet is connected with a positive pressure air outlet cylinder 8 extending rightwards and upwards, the positive pressure air inlet cylinder 7 is a horn-shaped rectifier, and the upward axial angle of an opening is more than 45 degrees and less than 90 degrees (the included angle between the positive pressure air inlet cylinder and a horizontal line); the positive pressure ventilator 4, the positive pressure air inlet barrel 7 and the positive pressure air outlet barrel 8 are used for stirring the air flow on the upper layer of the strip mine, and play a certain role in purifying haze; the positive pressure air inlet cylinder 7 is designed to be more than 45 degrees and less than 90 degrees so as to avoid the air inlet and outlet of the positive and negative pressure ventilators 3 from forming circulating air; the formation of circulating air easily increases the concentration of harmful gases (such as CO, methane and the like) around the equipment, so that the explosion risk exists; in addition, the fixed support is arranged outside the positive pressure air inlet cylinder 7 and the positive pressure air outlet cylinder 8, so that the fixed support is kept stable, and the support form is not limited.
The positive pressure air outlet cylinder 8 is preferably height-adjustable, wherein one specific scheme is that as shown in fig. 1, the positive pressure air outlet cylinder 8 also adopts a bendable flexible air cylinder, a telescopic positioning support rod support is arranged outside the air outlet end of the positive pressure air outlet cylinder 8, the lower end of the support rod is fixed on the self-moving device 1, and the upper end of the support rod is connected with the air outlet end of the positive pressure air outlet cylinder 8; the height of the positive pressure air outlet cylinder 8 is adjusted by changing the length of the supporting rod; the telescopic positioning support rod is the prior art, and the specific structure of the telescopic positioning support rod is not described in detail; and an electric telescopic rod can be further adopted for supporting, so that the device is more intelligent.
As shown in fig. 2, a generator 9 is further installed on the self-moving device 1 at the rear side of the cab 101, preferably a diesel generator 9 is used, and the generator 9 is used for driving the positive and negative pressure ventilators 3.
In addition, in order to relieve the vibration of the ventilator during operation, the bottom of the fan mounting frame 2 is provided with
A shock absorber; the generator 9 is also provided with a damping device to damp vibration during operation, which is prior art and not described herein.
The self-moving device 1 is crawler-type mobile equipment, the size and specification of the self-moving equipment can be selectively adjusted according to the size of a ventilator, and a self-moving equipment chassis is preferably provided with four telescopic supporting legs which can provide stable support for the device during working according to terrain; this is the prior art, and is not shown in the figures and is not described herein.
The device is mainly used in a deep concave surface mine stope, wherein the negative pressure ventilator 3, the negative pressure air inlet barrel 5 and the negative pressure air outlet barrel are used for discharging pollutants such as dust, blast smoke and the like generated in the surface mine stope to the outside of the stope, so that the air quality and visibility in the stope are improved; a positive pressure ventilator 4, a positive pressure air inlet cylinder 7 and a positive pressure air outlet cylinder 8 are used for stirring the air flow above the opencast coal mine, and a certain purification effect is achieved on the haze above the opencast coal mine. The device implements comprehensive ventilation and dust removal on the strip mine stope through the two functions, achieves the aim of effectively improving the atmospheric environment of the strip mine production site, and meets the requirement of safe and efficient production of the strip mine.
Although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to one skilled in the art that various changes in the embodiments and/or modifications of the embodiments and/or portions thereof may be made, and all changes, equivalents, and modifications that fall within the spirit and scope of the invention are therefore intended to be embraced by the appended claims.
Claims (9)
1. A self-moving double-pressure strip mine ventilation device is characterized by comprising a self-moving device, a fan mounting frame, a negative pressure ventilator, a positive pressure ventilator, a negative pressure air inlet cylinder, a negative pressure air outlet cylinder, a positive pressure air inlet cylinder, a positive pressure air outlet cylinder and a generator;
the self-moving device has the main function of carrying the main components and can conveniently move positions in the strip mine; a fan mounting frame is arranged in front of a cab of the self-moving device, the fan mounting frame is provided with an upper layer and a lower layer, a negative pressure ventilator is arranged on the lower layer, and a positive pressure ventilator is arranged on the upper layer; the negative pressure ventilator and the positive pressure ventilator adopt mine explosion-proof axial flow fans; the right side of the negative pressure ventilator is provided with an air inlet, a negative pressure air inlet barrel extending towards the front right is connected to the air inlet, and the negative pressure air inlet barrel faces to one side of the cab of the self-moving device and exceeds the front right side of the self-moving device; the right side port of the negative pressure air inlet cylinder is supported and fixed through a first fixing frame, so that the right side port of the negative pressure air inlet cylinder faces to the right front;
the left air outlet port of the negative pressure ventilator is connected with a negative pressure air outlet barrel, the negative pressure air outlet barrel adopts a bendable flexible air barrel which extends to a designated area of a strip mine and is used for sending mine dust sucked by the negative pressure ventilator out of a stope;
the left side of the positive pressure ventilator is an air inlet, and the right side of the positive pressure ventilator is an air outlet; the air inlet is connected with a positive pressure air inlet cylinder extending leftwards and upwards, the air outlet is connected with a positive pressure air outlet cylinder extending rightwards and upwards, the positive pressure air inlet cylinder is a horn-shaped rectifier, and the upward axial angle of an opening is more than 45 degrees and less than 90 degrees;
the generator is also arranged on the self-moving device and at the rear side of the cab and used for driving the positive-negative pressure ventilator.
2. The self-moving dual pressure open pit ventilation unit of claim 1, wherein: the self-moving device adopts the existing hydraulic electric excavator.
3. The self-moving dual pressure open pit ventilation unit of claim 1, wherein: the first fixing frame comprises two fixing support rods, the upper ends of the two fixing support rods are symmetrically arranged on the front side and the rear side of a right side port of the negative pressure air inlet cylinder, the lower ends of the two fixing support rods are fixed on the self-moving device, and the right side port of the negative pressure air inlet cylinder extends towards the right front side through the two fixing support rods.
4. The self-moving dual pressure strip mine ventilation unit of claim 2, wherein: the structure of the existing hydraulic electric excavator is utilized, the large arm, the bucket and the like of the existing hydraulic electric excavator are replaced by a negative pressure air inlet cylinder, and a reserved large arm oil cylinder is connected with an air inlet at the right side of the negative pressure air inlet cylinder, so that the vertical height adjustment of the air inlet at the right side of the air inlet cylinder is realized; the negative pressure air inlet cylinder adopts a flexible air cylinder, a right air inlet of the negative pressure air inlet cylinder is provided with a circular ring made of hard materials, and the left side and the right side of the circular ring are symmetrically provided with short connecting rods extending outwards; the upper end of an original oil cylinder of the hydraulic electric excavator is connected to the short connecting rod, the lower end of the oil cylinder is kept unchanged in the original structure, the lower end of the oil cylinder can be rotatably positioned and can stretch along with the rotation of the oil cylinder, and therefore the vertical height and the extension length of a right air inlet of the negative pressure air inlet cylinder are controlled.
5. The self-moving dual pressure open pit ventilation unit of claim 1, wherein: the positive pressure air outlet cylinder is adjustable in height.
6. The self-moving dual pressure strip mine ventilation unit of claim 5, wherein: the positive pressure air outlet cylinder adopts a bendable flexible air cylinder, a telescopic positioning support rod support is arranged outside the air outlet end of the positive pressure air outlet cylinder, the lower end of the support rod is fixed on the self-moving device, and the upper end of the support rod is connected with the air outlet end of the positive pressure air outlet cylinder; the height of the positive pressure air outlet cylinder is adjusted by changing the length of the supporting rod; the support rod is manually operated or electrically operated.
7. The self-moving dual pressure open pit ventilation unit of claim 1, wherein: the generator adopts a diesel generator.
8. The self-moving dual pressure open pit ventilation unit of claim 1, wherein: a shock absorber is arranged at the bottom of the fan mounting frame; the generator is also provided with a damping device to damp vibration during operation.
9. The self-moving dual pressure strip mine ventilation unit of any one of claims 1-8, wherein: crawler-type mobile equipment is selected for use from the device that moves, and moves equipment chassis certainly and set up four scalable landing legs, and four landing legs can provide stable support for this device during operation according to the topography.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010158834.0A CN111365058B (en) | 2020-03-09 | 2020-03-09 | Self-moving type double-pressure ventilation device for strip mine |
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| CN202010158834.0A CN111365058B (en) | 2020-03-09 | 2020-03-09 | Self-moving type double-pressure ventilation device for strip mine |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06241515A (en) * | 1993-02-15 | 1994-08-30 | Kajima Corp | Wind shifter |
| CN102966367A (en) * | 2012-11-23 | 2013-03-13 | 三一重型装备有限公司 | Roadway construction equipment and dust removing device thereof |
| CN208267841U (en) * | 2018-05-21 | 2018-12-21 | 新汶矿业集团有限责任公司翟镇煤矿 | A kind of machine driven headings mechanical and hydraulic combined dust system |
| CN208650903U (en) * | 2018-05-29 | 2019-03-26 | 四川达竹煤电（集团）有限责任公司铁山南煤矿 | A kind of comprehensive pick face dust guard of novel air way |
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2020
- 2020-03-09 CN CN202010158834.0A patent/CN111365058B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06241515A (en) * | 1993-02-15 | 1994-08-30 | Kajima Corp | Wind shifter |
| CN102966367A (en) * | 2012-11-23 | 2013-03-13 | 三一重型装备有限公司 | Roadway construction equipment and dust removing device thereof |
| CN208267841U (en) * | 2018-05-21 | 2018-12-21 | 新汶矿业集团有限责任公司翟镇煤矿 | A kind of machine driven headings mechanical and hydraulic combined dust system |
| CN208650903U (en) * | 2018-05-29 | 2019-03-26 | 四川达竹煤电（集团）有限责任公司铁山南煤矿 | A kind of comprehensive pick face dust guard of novel air way |
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| CN111365058B (en) | 2022-02-15 |
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