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WO2017002006A1 - Moyen et procédé de pulvérisation d'eau - Google Patents

Moyen et procédé de pulvérisation d'eau Download PDF

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Publication number
WO2017002006A1
WO2017002006A1 PCT/IB2016/053844 IB2016053844W WO2017002006A1 WO 2017002006 A1 WO2017002006 A1 WO 2017002006A1 IB 2016053844 W IB2016053844 W IB 2016053844W WO 2017002006 A1 WO2017002006 A1 WO 2017002006A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
water spray
valve
spray means
blast
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2016/053844
Other languages
English (en)
Inventor
Martin John Van Schoor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terravent Pty Ltd
Original Assignee
Terravent Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Terravent Pty Ltd filed Critical Terravent Pty Ltd
Publication of WO2017002006A1 publication Critical patent/WO2017002006A1/fr
Priority to ZA2017/08118A priority Critical patent/ZA201708118B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D3/00—Particular applications of blasting techniques
    • F42D3/04—Particular applications of blasting techniques for rock blasting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
    • B05B15/16—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts for preventing non-intended contact between spray heads or nozzles and foreign bodies, e.g. nozzle guards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/1209—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means for each liquid or other fluent material being manual and interdependent
    • 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
    • E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • 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
    • E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/14—Fluid barriers or rock dusters made to work by, or at the same time as, shots or explosions
    • E21F5/143—Fluid barriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening

Definitions

  • This invention relates to a water spray means and method. More particularly, this invention relates to an improved water spray means and method that is adapted for use, for example, in mines or confined spaces, or in quarries.
  • a water spray means including a frame including at its front end, a suitable water spray device connected to a pressurized water supply and optionally to an air pressure supply via a valve system, a blast detection device adapted, when an explosives blast is detected, to activate the valve system to open the water supply and the optional air supply to the spray device, and a timer device adapted to de-activate the valve system thereby to close the water supply and the optional air supply to the spray device after a suitable time period.
  • the frame may be integral with, and form part of, the water spray means or it may be separate from the water spray means.
  • the water spray means and its frame may, in practice, be mounted on a mine side wall and connected to a pressurized water supply and optionally an air pressure supply, suitably close to the rock face where drilling and blasting is taking place in a mine, quarry, or the like. This may typically be about 20 to 30 metres from the rock face depending on the spray means being able to project its spray over such a distance.
  • the water spray means may, in practice, be advanced along a side wall in the mine as the rock face is advanced.
  • the water spray device and hence the water spray means, may use, and hence be connected to, a pressurized water supply only (and not also to an air pressure supply).
  • the water spray head may preferably be adapted to produce a spray that includes a sufficient amount of atomized water particles that are fine enough to attract, and to hold in suspension and/or dissolve fine dust particles and noxious gas fumes and molecules, respectively, producing a water/dust/gas mixture in the form of a sludge that falls or flows to the ground, thereby rendering the air relatively clean and safe within a short period.
  • the sludge may thereafter be removed from the site by any suitable means, and disposed of in a safe manner.
  • the water spray head may be protected from damage by large blast particles or fragments by a suitably sturdy screen or mask placed in front of the spray head.
  • the water spray means body may be protected from damage by blast particles by being surrounded along its length by a suitable large sturdy tube mounted on the frame that may, for example, be made from a suitable polyethylene or other plastics material, having one, or optionally two, slot(s) in its upper part for movement of its levers, or a larger slot, respectively, in its lower part for weights to drop or move through the tube wall.
  • the blast detection device may be provided on the frame as a moveable baffle, or a plate or dish, that is adapted to be moved backwards automatically by the force of an explosives blast and includes a lever adapted to activate the valve sytem.
  • the blast detection device may be a pressure sensitive device or switch adapted to activate the valve system.
  • its lever When an explosives blast pushes the blast detection device backwards, its lever may automatically activate and open the second pair of valves, or the second valve, respectively, thereby opening the water conduit and the optional air conduit to release a spray of water through the spray device towards the blasted rock face and the adjacent side walls and roof hanging.
  • the valve system may include, and be operated by, a lever and tension spring system or by a weight-induced or weight-based system, respectively.
  • the valve system may include two pairs of valves, the first pair being located upstream of the second pair, with one valve of each pair being located along a pressurized water conduit and the corresponding valve being located along an air pressure conduit.
  • the valves of each pair of valves may operate together viz either both valves are open or both are closed.
  • the valve system includes only two valves (instead of two pairs of valves), the first valve being located upstream of the second valve along the pressurized water conduit.
  • the first valve When the water spray means is in a ready state, the first valve will be in an open condition, while the second viz downstream valve will be in a closed condition.
  • its lever When an explosives blast pushes the blast detection device backwards, its lever may automatically activate and open the second valve, thereby opening the water conduit to the spray device to release a spray of water through the spray device towards the blasted rock face and the adjacent side walls and roof hanging
  • the timer device may be any suitable timer device. More particularly, the timer device may include a container connected to the water supply and adapted to fill with water after a pre-determined period, for example after 5 to 10 minutes, whereafter it may activate the first pair of valves, or the first valve, respectively, to close such valve(s) and thereby to close the water supply and the optional air supply.
  • the means may be manually re-set viz the second pair of valves, or the second valve, respectively, is re-closed and the first pair of valves, or the first valve, respectively, may be re-opened.
  • the blast detection device may also be reset and the timer device is reset by emptying the water therefrom. In this state the water spray means is reset to its ready or stand-by mode viz for the next explosives blast.
  • a water spray method adapted to activate automatically after an explosives blast in a mine, quarry, or the like, including the step of using a water spray means as herein described.
  • a water spray method adapted to be used after blasting in a mine, quarry, or the like, including the steps of suitably locating a water spray means adjacent a blast site, using a blast detection device to sense an explosives blast and to automatically activate a suitable water spray directed at a blast site for a predetermined time, and then using a timer device to automatically stop or shut off the water spray.
  • Figure 1 shows a water spray means, according to one form of the present invention, that is operated by, and uses, pressurized water and compressed air, and that includes a lever and spring system to activate its valves, in a reset and ready state or mode. More particularly, Figure 1 (a) shows a schematic side sectional view of this water spray means and Figure 1 (b) shows an external plan view of this water spray means;
  • Figure 2 shows a water spray means, according to another form of the present invention, that is operated by, and uses, pressurized water only (and not additionally compressed air), and that also includes a lever and spring system to activate its valves, in a reset and ready state or mode. More particularly, Figure 2(a) shows a schematic side sectional view of this water spray means and Figure 2(b) shows an external plan view of this water spray means;
  • Figure 3 shows a schematic side view of a water spray means, according to yet another form of the present invention, that is operated by, and uses water and compressed air, and that utilizes a lever and weight-based system to activate its valves, in a reset and ready state or mode;
  • Figure 4 shows a schematic side view of the water spray means of Figure 3, having been activated by an explosives blast in a mine, and hence in an activated mode viz spraying water on a blast site and mine face;
  • Figure 5 shows a schematic side view of the water spray means of Figure 4, viz after spraying and having been de-activated, and hence in a de-activated mode viz before being reset;
  • Figure 6 shows a three dimensional schematic side view of the water spray means of Figure 3, including, and enclosed within, a suitably protective tube or pipe and fitted with a protective front screen or mask.
  • reference numeral 10 refers generally to a water spray means, according to one form of the invention, for use in a mine, for example.
  • the means 10 includes an integral frame 12 including a pressurized water inlet pipe 12.1 and a pressurized air inlet pipe 12.2. At their free ends, the pipe 12.1 is connected to a pressurized water supply (not shown) while the pipe 12.2 is connected to a pressurized air supply (also not shown).
  • a suitable spray device or head 14 including a plurality of spray and atomizing nozzles 14.1 , as shown in the detail drawing insert, adapted to spray a substantial quantity of water including a substantial quantity of atomized water droplets.
  • the spray head 14 and its spray nozzles 14.1 are protected from damage by larger stones and rock fragments by way of a suitable stone guard 26.
  • the pipes 12.1 and 12.2 each have a valve system provided therein including two serial valves viz in pipe 12.1 a valve 12.1 1 (upstream) and a valve 12.12 (downstream), and in pipe 12.2 a valve 12.21 (upsteam) and a valve 12.22 (downstream), respectively.
  • the valves 12.21 and 12.22 in the pipe 12.2 are hidden behind the pipe 12.1 in side view and hence cannot be seen in Figure 1 (a). However, if reference is had to Figure 3, these valves can be visualized and their operation can be readily understood.
  • Each corresponding valve pair viz 12.1 1 , 12.21 are interconnected and operate together, with both valves being either open simultaneously or being closed simultaneously.
  • valve pair 12.12, 12.22 are also interconnected and also operate together, with both valves either being open simultaneously or being closed simultaneously.
  • each valve pair 12.1 1 , 12.21 and 12.12, 12.22, respectively operates oppositely to the other pair, as will become clear from the description hereunder.
  • Each valve pair 12.1 1 , 12.21 and 12.12, 12.22 is activated viz opened or closed by means of a lever and (tension) spring system.
  • the system includes for the upsteam valve pair 12.1 1 , 12.21 a first (single) lever 16 located between these valves and connected to and linking these two valves together in their operation.
  • a first (single) lever 16 located between these valves and connected to and linking these two valves together in their operation.
  • the system includes a second (single) lever 18, located between these valves and connected to and linking these two valves together in their operation.
  • Each of these two levers 16 and 18 is adapted to be swiveled, as shown in dotted lines in Figure 1 (a), viz when the spray means 10 detects an explosives blast and is required to start spraying and also when the water spray is shut off, respectively.
  • the first lever 16 is adapted and tensioned to swivel from its position shown in solid lines, by means of an elongate spring 16.1 to the position shown in dotted lines, when released from its normal or reset position as shown in solid lines in Figure 1 (a), which shows the spray means 10 in its reset and ready mode.
  • the upstream valve pair 12.1 1 , 12.21 shown in solid lines
  • the second lever 18 is tensioned to swivel by means of an elongate spring 18.1 to the position shown in dotted lines in Figure 1 (a) when released from its reset position as shown in solid lines in Figure 1 (a), which shows the spray means 1 0 in its reset and ready mode.
  • the downstream valve pair 12.21 , 12.22 shown in solid lines
  • the first lever 16 is connected via a suitable lever system 16.2 that firstly holds the lever 16 in its reset position, as shown in solid lines in Figure 1 (a), with its valve pair 12.1 1 , 12.21 in their open condition; and that secondly is adapted to swivel the lever 16.1 to its position shown in dotted lines.
  • the piston rod extension 20.1 of timer piston 20 pushes the lever system (16.2) upper end and releases the lever 16 from a hook 16.3 in the lever 16.2 thereby enabling the spring 16.1 to swivel the lever 16 to its dotted position, and thereby moving the valve pair 12.1 1 , 12.21 to their closed condition.
  • the second lever 18 is connected via a suitable lever system 18.2 that firstly holds the lever 18 in its reset position, as shown in solid lines in Figure 1 (a), with its valve pair 12.12, 12.22 in their closed condition; and that secondly is adapted to swivel the lever 1 8.1 to its spraying position as shown in dotted lines.
  • valve pair 12.12 and 12.22 This swivels the valve pair 12.12 and 12.22 to their open condition allowing water and air to pass along each of the respective pipes 12.1 and 12.2 (of which only the pressurized water pipe 12.1 is shown in side view) to the spray head 14 and its spray nozzles 14.1 which in turn spray water and atomized droplets on a blast site (not shown).
  • the cut-away opening shows a needle valve 20.2 provided in the cylinder 20 to adjust the flow of water into the cylinder 20 in order to extend or reduce the time taken for the cylinder 20 to fill with water and hence to adjust the spraying time of the spray means 10.
  • the opening also shows a drain valve 20.3 provided in the cylinder for manually draining the cylinder 20 of water prior to resetting the apray means 10.
  • Figure 1 (b) also shows two slots provided in the upper part of the protective casing 24, the first slot 24.1 allowing the first lever 16 to swivel from its reset position (with both of its associated valves open), as shown in full lines in Figure 1 (a), to its cut- off (closed) position as shown in dotted lines in Figure 1 (a); while the second slot 24.2 allows the second lever 18 to swivel from its reset position (with both of its associated valves closed), as shown in full lines in Figure 1 (a), to its (open) spraying position as shown in dotted lines in Figure 1 (a).
  • the spray means 10 will be located about 20 to 30 metres from a mine rock/working face and mounted about 2 meters above the floor, with the spray head 14 facing the rock face.
  • the spray means 10 via its pipes 12.1 and 12.2, respectively, will then be connected to a pressurized water supply (not shown) and to a pressurized air supply (also not shown).
  • the levers 16 and 18 Prior to any explosives blasting, the levers 16 and 18 will be manually reset to their reset or ready positions as shown in full lines in Figure 1 (a).
  • the spray means 10 is then in its reset or ready mode and accordingly is primed to react to an explosives blast in the mine.
  • the spray means 10 is then reset manually to its reset or ready mode by emptying the cylinder 20 via the drain valve 20.3, drawing the piston 20.1 back to its previous position viz in the empty cylinder, resetting the lever 16 to its previous position with its valve pair 12.1 1 , 12.21 closed (viz in the position shown in full lines in Figure 1 (a)), and resetting the lever 18 to its previous position with its valve pair 12.12, 12,22 open (viz in the position shown in full lines in Figure 1 (a)).
  • the spray means 10 is then restored to its reset and ready mode, prepared for the next blast after being re-positioned close to the next blast site and suitably re-connected to the pressurized water supply and to the pressurized air supply.
  • the spray means 10 is generally and otherwise similar to the spray means 10 of Figure 1 , as described above, except that it has no pressurized air supply and hence it has no air pressure pipe or its associated valves and no associated lever system included in this spray means 10.
  • the water spray means 10 of Figure 2 operates solely on pressurized water (and not on the combination of pressurized water and air pressure). Accordingly this form of the spray means 10 can be used in or at sites that do not have a compressed air supply.
  • the spray means 10 of Figure 2 operates in generally the same manner as that of Figure 1 , as described above, except that, in operation, it does not have an air pressure line but it has a pressurized water line 12.1 that functions as described in Figure 1 above.
  • An explosives blast will trigger the blast baffle 22 and its linked lever system 18.2 will release the lever 18 from its hook 18.3 in the lever system 18.2 allowing the spring 18.1 to swivel the lever 18 to the position shown in dotted lines, thereby opening the valve 12.12 and allowing pressurized water to flow through the water pipe 12.1 to the spray head 14 and its atomizing nozzles.
  • This flow of water will also fill the cylinder 20 with water which, when filled, will activate the lever system 16.2 by releasing the lever 16 from its hook 16.3 in the lever system 16.2, which allows the spring 16.1 to swivel the lever 16 to the position shown in dotted lines.
  • valve 12.1 1 which shuts off the water flow through the spray means 10 after a preset time of about 5 to 10 minutes.
  • the spray means 10 then needs to be reset manually by emptying the cylinder 20, and resetting the levers 16 and 18, and hence each associated valve viz 12.1 1 and 12.12, respectively. This resets the spray means 10 to its reset and ready mode, for the next explosives blast, after the spray means has been suitably re-positioned and re-connected to a pressurized water supply (not shown).
  • the water spray means 30 in this form of the invention is constructed and operates essentially in similar fashion to that of the water spray means 10 of Figure 1 , except that the water spray means 30 includes and is operated by a valve and weight system instead of a valve and lever and spring system.
  • the respective levers are also different and are two-legged levers with each leg operating a separate valve, as will be seen from the drawings and description below.
  • reference numeral 30 refers generally to a water spray means that includes an integral frame 32 including a pressurized water pipe 32.1 and a pressurized air pipe 32.2.
  • the water pipe 32.1 includes an upstream valve 32.1 1 (that is closed in the reset mode of the means 30) and a downsteam valve 32.12 (that is open in the reset mode of the means 30).
  • the air pipe 32.2 likewise includes an upstream valve 32.21 (that is closed in the reset mode of the means 30) and a downstream valve 32.22 (that is open in the reset mode of the means 30).
  • the upsteam valve pair 32.1 1 , 32.21 are linked and operate together by way of a dual lever 38.3 viz these two valves are either both closed or both open simultaneously.
  • the upsteam valve pair are (both) open.
  • the downsteam valve pair 32.12, 32.22 are linked and operate together by way of a dual lever 36.3 viz these two valves are either both closed or both open simultaneously.
  • the downsteam valve pair are (both) closed.
  • Each valve pair is activated by means of a weight-induced or weight-based system.
  • the system includes for the downstream valve pair, a weight in the form of a metal ball 36 and for the upsteam valve pair, a weight in the form of a ball 38, each ball being adapted to be released and dropped, viz when the spray means 10 detects an explosives blast and is required to commence spraying, or when the water spray is shut off, respectively.
  • the ball 36 is cradled in an angled rotatable bracket or cradle 36.1 and is tied by a cable 36.2 to a dual lever 36.3 that is adapted to open the closed (in reset mode) valve pair 32.12, 32.22.
  • Figure 3 shows the spray means 30 in its reset and ready state or mode, awaiting an explosives blast .
  • a blast detection device is provided and mounted in the form of a plate or dish 40 to which is secured a pivotal arm 40.1 which controls a Z-shaped lever 40.2 that can likewise pivot to allow the rotatable cradle 36.1 that is biased to rotate so that it releases and thereby drops the ball 36.
  • the ball 36 via the cable 36.2 pulls down the dual lever 36.3 to open the pair of linked valves 32.12, 32.22, thereby allowing air and water both under pressure to flow to and out of the spray head 34. See Figure 4 that shows the means 30 in its spraying state or mode.
  • the pipe 32.3 also allows water to flow under pressure to a water-operated timer device 42 that is adapted to fill with water after a suitable time of about 5 to 10 minutes.
  • the timer device 42 advances its piston lever 42.1 until the lever 42.1 pushes the Z-shaped bracket 38.4 to the left, thereby tilting the biased rotatable bracket 38.1 so that the ball 38 is released and drops out of the bracket 38.1 and, via the cable 38.2, pulls the dual bracket 38.3 downwardly.
  • both balls 36 and 38 are in a dropped mode that indicates that spraying of the blast site has been completed. This also indicates that the spraying means 30 needs to be reset. This is done manually by replacing each of the balls 36 and 38 in their respective brackets or cradles 36.1 and 38.1 tilted back correctly, and resetting the respective valve pairs in their reset positions, as shown in Figure 3. Relative to the ball 36, the blast plate or dish 40 is also tilted up and the relevant Z-backet 40.2 is reset accordingly. Relative to the ball 38, the timer device 32 is emptied of water and the relevant Z-bracket 38.4 is reset accordingly. This resets and restores the spray means 30 to its ready state or mode, as shown in Figure 3.
  • the spray means 30 is shown encased in a sturdy tube or pipe 44 (indicated in dotted lines) made of a suitable polyethylene or other plastics material, for example, to protect the mechanism thereof from damage by larger flying particles or fragments of of rock caused by blasting.
  • the tube or pipe 44 includes one or two suitable opening(s) or slot(s) along its underside (not shown) to permit the balls 36 and 38 to drop and move through such opening(s) or slot(s), as explained above, during the operation of the spray means 30.
  • the front of the spray means 30 is provided with a sturdy metal screen or mask 46 to protect the spray head 34 from damage by larger flying rock fragments caused by the blasting.
  • the spray means 30 will be mounted (and after subsequent blasting, it will be re-mounted) at a suitable distance of about 20 to 30 metres from a rock face to be blasted, for example in a mine (not otherwise shown) and at a suitable height viz about 1 .5 to 2 metres from ground level. It is then reset in respect of its valve system and other components as shown in Figure 3, and suitably connected to a pressurized water and a pressurized air supply, respectively (not shown). The spray means 30 is then in a ready state or mode, as shown in Figure 3, to operate in respect of blasting in a mine for example.
  • the spray means 30 When an explosives blast takes place, the spray means 30 will operate automatically to commence spraying, as explained above, and it will change its state or mode from that shown in Figure 3 to that shown in Figure 4 viz to its spraying mode for about 5 to 10 minutes. Then it will automatically, as also explained above, change its state or mode from that shown in Figure 4 to that shown in Figure 5 viz to its shut-off state or mode. It then requires manual resetting to reset or restore it to its reset or ready state or mode, as shown in Figure 3, whereafter it is ready to operate again and to repeat the above cycle - subject of course to it being relocated at a suitable distance from the rock face and being reconnected to the water and air supplie, respectively.
  • the above-mentioned water spray means provides an effective and relatively simple but robust means and method for automatically spraying a blast area in a confined area such as in a mine tunnel.
  • the water spray means includes mechanical valves that are generally dust-proof and blast-resilient and includes an improved but simple lever and spring system, alternatively a weight-induced or weight-based system, to activate the valve systems. It will therefore be seen that the water spray means and method described herein have certain advantages over existing or prior art means/systems and methods, respectively. It will also be seen that the invention is relatively simple and inexpensive to manufacture and to maintain, and that it is rugged in use and simple and convenient to operate in situ.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Engineering & Computer Science (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Nozzles (AREA)

Abstract

Cette invention concerne un moyen (10) de pulvérisation d'eau qui comprend : un cadre (24) comprenant, au niveau de son extrémité avant, un dispositif de pulvérisation d'eau approprié (14) raccordé à une alimentation en eau et une alimentation en air sous pression par l'intermédiaire d'un système de soupapes (12.11, 12.12) ; un dispositif de détection de déflagration (22) inclus sur le cadre et conçu, lorsqu'une explosion est détectée, pour activer le système de soupapes pour ouvrir l'alimentation en eau et l'alimentation en air du dispositif de pulvérisation ; un dispositif minuteur (20) monté sur le cadre et conçu pour désactiver le système de soupapes pour ainsi fermer l'alimentation en eau et l'alimentation en air au bout d'une durée appropriée. L'invention concerne également un procédé comprenant l'étape consistant à disposer un moyen de pulvérisation d'eau à proximité d'un site de déflagration et à détecter et utiliser une explosion pour activer automatiquement ladite pulvérisation d'eau en direction du site de déflagration, puis à utiliser un dispositif minuteur pour arrêter ou fermer automatiquement la pulvérisation.
PCT/IB2016/053844 2015-06-29 2016-06-28 Moyen et procédé de pulvérisation d'eau Ceased WO2017002006A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2017/08118A ZA201708118B (en) 2015-06-29 2017-11-29 Water spray means and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2015/04696 2015-06-29
ZA201504696 2015-06-29

Publications (1)

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WO2017002006A1 true WO2017002006A1 (fr) 2017-01-05

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PCT/IB2016/053844 Ceased WO2017002006A1 (fr) 2015-06-29 2016-06-28 Moyen et procédé de pulvérisation d'eau

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CN108620253A (zh) * 2017-03-24 2018-10-09 东芝泰格有限公司 液滴分配装置
CN114658467A (zh) * 2022-04-06 2022-06-24 贵州大学 一种矿用自动化隔爆水袋棚装置及其使用方法
CN116475173A (zh) * 2023-05-09 2023-07-25 北京林业大学 一种适应于高空作业的人机交互式除冰装备

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CN2316051Y (zh) * 1997-10-24 1999-04-28 王礼鸿 自控限时降尘喷雾器
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CN108620253A (zh) * 2017-03-24 2018-10-09 东芝泰格有限公司 液滴分配装置
CN114658467A (zh) * 2022-04-06 2022-06-24 贵州大学 一种矿用自动化隔爆水袋棚装置及其使用方法
CN116475173A (zh) * 2023-05-09 2023-07-25 北京林业大学 一种适应于高空作业的人机交互式除冰装备

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