WO2008020773A1 - Injection sprayer and injection sprayer seat - Google Patents

Injection sprayer and injection sprayer seat Download PDF

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Publication number
WO2008020773A1
WO2008020773A1 PCT/PL2007/000055 PL2007000055W WO2008020773A1 WO 2008020773 A1 WO2008020773 A1 WO 2008020773A1 PL 2007000055 W PL2007000055 W PL 2007000055W WO 2008020773 A1 WO2008020773 A1 WO 2008020773A1
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WO
WIPO (PCT)
Prior art keywords
chamber
seat
inlet channels
air inlet
shaped
Prior art date
Application number
PCT/PL2007/000055
Other languages
French (fr)
Inventor
Krysztof Karazniewicz
Original Assignee
Krysztof Karazniewicz
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 Krysztof Karazniewicz filed Critical Krysztof Karazniewicz
Publication of WO2008020773A1 publication Critical patent/WO2008020773A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/22—Equipment for preventing the formation of, or for removal of, dust
    • 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
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0425—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid without any source of compressed gas, e.g. the air being sucked by the pressurised liquid
    • 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
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays

Definitions

  • the subject of the invention is an injection sprayer and a seat for the injection sprayer destined for the use especially in mining organs of combined mining loaders for dust conditions and fire hazard control as well as to cool cutter picks.
  • a pick holder for a shearer drum and a cutting head of a mechanical miner or machine for cutting drifts or tunnels which contains near the pick a water nozzle mounted in a seat containing a chamber opened for water jet, to which the air inlet in the form of two channels situated oppositely each other in the side walls of the seat is made.
  • the diameter of the seat is equal to that of the chamber.
  • the water spray jet outgoing from the water nozzle takes the air flowing in the chamber through the lateral openings so that a water/air spray jet develops, which is directed through the cylindrical end section of the chamber to the pick blade.
  • the water nozzle is mounted in a screwed closing plug from the bottom of the chamber to which it is led a water nozzle supplying system connected with a channel made in the body of the pick holder.
  • the nozzle seat constituting the body of this device, is shaped like a roll the base of which is shaped like a truncated cone and has a through hole along its longitudinal axis.
  • the through hole constitutes in its upper part a chamber in which the tip of the water nozzle is placed whereas the water nozzle is screwed in the lower part of the through hole.
  • In the wall of the body there is(are) one or more air inlet channel(s) connecting the chamber with the atmosphere.
  • the outlet openings of the channels are arranged in the chamber and the inlet openings outside the seat.
  • the axes of the inlet channels are inclined and converge towards the port of the chamber but their outlet openings in the chamber are situated above the nozzle and the diameters of these channels are less than the chamber diameter.
  • the side surfaces of these outlet openings are one side internally tangent to the chamber wall.
  • the spray nozzle is provided with an insert bearing helical grooves on its external surface and they swirl the water jet.
  • the direction of getting the air from the inlet channels to the chamber is coincident with the direction of the screw line of the grooves.
  • the water jet ejecting from the nozzle draws in on the principle of injection the air from outside of the body which is supplied then into the chamber by the inlet channels. From the chamber it is ejected a jet of water/air mixture.
  • the air stream fed to the chamber is tangent to it, it is subject to swirling action due to the Coanda effect.
  • the direction of swirling of the water jet is the same as the direction of the air stream drawn into the chamber causing that the developed jet of water/air mixture is advantageously atomized and the ejection of it from the chamber gives optimal effects in dust control and quenching sparks arising during the process of winning with a mining organ in which the sprayers are situated near each cutter pick.
  • the injection sprayer containing a seat with a chamber where in the seat a spray nozzle is mounted, having one or more air inlet channels the axes of which are inclined each other and converge towards the port of the chamber is characterised in that the air inlet channels are made so that the surface areas of their outlet openings situated in the chamber are greater than the surface areas of their inlet openings situated outside the seat.
  • the ratio of the surface area of the outlet opening to the surface area of the inlet opening is greater than 1,16.
  • the ratios of these surface areas for individual inlet channels can be equal or different.
  • the cross-sections of the air inlet channels are circular in shape.
  • the inlet channels are shaped like a circular truncated cone or conical ellipsoid the greater base of which is placed in the chamber.
  • the axes of the inlet channels are situated at a certain distance from the axial plane of the chamber but it is advantageous if the side surfaces of the inlet channels are one side internally tangent to the chamber wall.
  • the axes of the air inlet channels can intersect at one point but they also can intersect with the axial plane of the chamber on the same or different level(s).
  • the diameters of the air inlet channels are equal, advantageously smaller than the chamber diameter. It is advantageous if the spray nozzle delivers a jet of atomized water conical in shape.
  • the spray nozzle is placed in the lower part of the through hole, below the chamber, and is screwed.
  • the nozzle body is sealed, advantageously with a packing ring situated below the chamber.
  • the spray end-piece of the nozzle situated in the chamber has the form of a head polygonal in shape.
  • the spray end-piece of the nozzle situated in the chamber is shaped like a truncated cone the greater base of which is supported on a cylindrical head.
  • the spray end-piece of the nozzle is shaped like a cylindrical head containing a polygonal recess.
  • the seat has the form of a body of revolution, advantageously shaped like a roll the diameter of which becomes smaller and smaller from a certain point so that the base has the form of a rounded truncated cone.
  • the seat is shaped like a roll having a flanged base where on the water nozzle body it is mounted a gauze filter connected with the water channel situated in the flanged base at an angle relative to the axial plane of the chamber.
  • the seat is shaped like a roll the base of which is shaped like a ring with external thread the diameter of which is less than the roll diameter.
  • the seat of the injection sprayer the body of which is shaped like a solid having a through hole along its longitudinal axis and the upper part of the through hole constitutes the chamber of the water nozzle and in the walls of the chamber of the nozzle there is/are one or more air inlet channel(s) the axes of which are inclined each other and converge towards the port of the chamber is characterised in that the air inlet channels are made so that the surface areas of the outlet openings inside the chamber are greater than the surface areas of the inlet openings situated outside the seat.
  • the ratio of the surface area of the outlet opening to the surface area of the inlet opening is greater than 1,16 but the ratios of these areas can be equal or different for individual inlet channels.
  • the cross- sections of the air inlet channels are circular in shape.
  • the air inlet channels are shaped like a circular truncated cone the greater base of which is situated in the chamber.
  • the axes of the air inlet channels can converge at one point but they also may intersect with the axial plane of the chamber on the same or different level(s).
  • the diameters of the air inlet channels are equal, advantageously smaller than the chamber diameter.
  • the axes of the air inlet channels are situated at a certain distance from the axial plane of the chamber but it is advantageous if the side surfaces of the inlet channels are one side internally tangent to the chamber.
  • the body of the seat is shaped like a roll the diameter of which becomes smaller and smaller from a certain point so that the base has the form of a rounded truncated cone and it is advantageous if the through hole in the lower part is tapped.
  • the body of the seat is shaped like a roll and closed by a flanged base and, advantageously, in the base there is a water channel inclined towards the axial plane of the chamber.
  • the through hole is tapped in its lower part.
  • the body of the seat is shaped like a roll closed by a base shaped like a ring bearing external thread the diameter of which is smaller than the diameter of the roll, where, advantageously, the through hole is tapped in its lower part.
  • the seat has two inlet channels which are arranged oppositely each other on both sides of the chamber.
  • the seat has three inlet channels which are evenly distributed on the perimeter.
  • the seat also can have one inlet channel.
  • the solution according to the invention affects advantageously the intensification of the process of elimination of dustiness and fire hazards accompanying the operation of mining plants.
  • the main task of the sprayer is to catch dust particles and carry them away with the water as soon and effectively as possible and also to eliminate in the bud sparks caused by the mining organ pick striking, for example, against a stone
  • the problem of essential importance is the. size of a drop of water and the degree of atomization and also the kinetic energy of drops. A spark initiating the process of ignition of methane dispersed in the air is quenched more effectively if the degree of atomization is greater.
  • the size of a drop, the degree of atomization and also the kinetic energy of a drop are of essential importance.
  • the air is swirled stronger, mixed better with spray water causing that the drops are very small as well as increasing the kinetic energy of a drop.
  • Fig. 1 shows the longitudinal section of an injection sprayer in the plane B-B as marked in Fig. 2 and Fig. 3
  • Fig. 2 shows the section of the device /injection sprayer/ in the plane A-A as marked in Fig. 1
  • Fig. 3 shows the section of another form of the device depicted in Fig. 1, with conical air inlet channels, in the plane A-A
  • Fig. 4 shows the longitudinal section of a constructional variant of the device in the plane B-B as marked in Fig. 5 and in Fig. 6,
  • Fig. 5 shows the section of the device in the plane A-A as marked in Fig. 4, Fig.
  • FIG. 6 shows the section of another variant of the device depicted in Fig. 4, with conical air inlet channels, in the plane A-A
  • Fig. 7 shows the longitudinal section of another variant of the injection sprayer made in the plane B-B as marked in Fig. 8 and in Fig. 9,
  • Fig. 8 shows the section of the device in the plane A-A as marked in Fig. 7
  • Fig. 9 shows the section of another variant of the device from Fig. 7, with conical air inlet channels, which is made in the plane A-A
  • Fig. 10 shows the longitudinal section of the seat of the injection sprayer in the plane B-B as marked in Fig. 11 and in Fig. 12,
  • Fig. 11 shows the section of the seat in the plane A-A as marked in Fig. 10, Fig.
  • FIG. 12 shows the section of another variant of the seat from Fig. 10, with a conical air inlet channel, in the plane A-A
  • FIG. 13 shows the longitudinal section of constructional variants of the seat in the plane B-B as marked in Fig. 14 and in Fig. 15,
  • Fig. 14 shows the section of the seat in the plane A-A as marked in Fig. 13
  • Fig. 15 shows the section of another form of the seat from Fig. 13, with conical air inlet channels, in the plane A-A
  • FIG. 16 shows the longitudinal section of constructional variants of the seat in the plane B-B as marked in Fig. 17 and in Fig. 18,
  • Fig. 17 shows the section of the seat in the plane A-A as marked in Fig. 16, Fig.
  • FIG. 18 shows the section of another form of the seat from Fig. 16, with conical air inlet channels, in the plane A-A
  • FIG. 19 shows the longitudinal section of constructional variants of the seat in the plane B-B as marked in Fig. 20 and in Fig. 21,
  • Fig. 20 shows the section of the seat in the plane A-A as marked in Fig. 19
  • Fig. 21 shows the section of another form of the seat from Fig. 19, with a conical air inlet channel, in the plane A-A
  • Fig. 22 shows the longitudinal section of further constructional variants of the seat in the plane B-B as marked in Fig. 23 and in Fig. 24,
  • Fig. 23 shows the section of the seat in the plane A-A as marked in Fig. 22, Fig.
  • FIG. 18 shows the section of another form of the seat from Fig. 22, with conical air inlet channels, in the plane A-A
  • Fig. 25 shows the longitudinal section of further constructional variants of the seat in the plane B-B as marked in Fig. 26 and in Fig. 27,
  • Fig. 26 shows the section of the seat in the plane A-A as marked in Fig. 25
  • Fig. 27 shows the section of another form of the seat from Fig. 25, with conical air inlet channels, in the plane A-A.
  • the injection sprayer consists of a seat 1 and a water nozzle 7 mounted in it, advantageously with a conical atomized water jet.
  • the seat 1, constituting the body of the sprayer is shaped like a roll the diameter of which becomes smaller and smaller from a certain point so that the base has the form of a rounded truncated cone and the whole has a through hole along its longitudinal axis.
  • the through hole is two-section and consists of the upper part with a greater diameter, constituting the chamber 2 for the spray nozzle 7, and in the chamber air is mixed with water supplied under pressure.
  • the lower part of the through hole has a smaller diameter and is tapped.
  • the inlet channels 4 In the wall of the chamber there are two air inlet channels 4, connecting the chamber with the atmosphere, the inlet openings of which are arranged outside the seat 1 whereas the outlet openings 6 are situated in the chamber 2.
  • the outlet openings are arranged above the nozzle 7, at a certain distance from the face surface of the chamber so that the cylindrical part of the chamber directing the jet of atomized liquid/air mixture towards the port of the chamber is situated above them.
  • the number of inlet channels can be different from two.
  • the inlet channels 4 are circular in cross-section and have equal or different diameters less than the diameter of the chamber 2.
  • the inlet channels are arranged oppositely each other on both sides of the chamber 2, and their axes are situated at an equal distance X from the axial plane of the chamber.
  • the axis of one channel is situated on one side of this plane whereas that of the other on the other /opposite/ side.
  • the side surfaces of the channels 4 are one side internally tangent to the wall of the chamber 2 enabling the air to be swirled more effectively.
  • the axes of the inlet channels are inclined relative to the axis of the chamber 2 and converge towards the chamber outlet.
  • the axes of these channels intersect with the axial plane of the chamber 2 on the same or different level(s) and also can converge at one point.
  • the inlet channels 4 are made so that the surface areas P6 of the outlet openings 6, situated inside the chamber 2, are greater than the surface areas P5 of the inlet openings arranged outside the seat 1.
  • the ratio of the area P6 to the area P5 is greater than 1,16.
  • the ratios of the surface areas for individual inlet channels can be equal or different.
  • a spray end-piece 8 of the spray nozzle 7 providing a conical spray water jet, mounted so that the bottom part of its body is screwed in the lower part 3 of the through hole.
  • the spray end-piece 8 is shaped like a polygon, for example in the form of hexagonal recessed head.
  • the nozzle is supplied with water from the bottom of the through hole of the seat 1.
  • the injection sprayer consists of a seat 9 and a water nozzle 12 which is mounted in it and provides, advantageously, a conical spray water jet.
  • the seat 9, constituting the body of the injection sprayer is shaped like a roll with the flanged base 10 shaped like a polygon or circular in shape and has a through hole along its longitudinal axis.
  • the through hole is two-stage and consists of the upper part with a greater diameter, constituting the chamber 2 for the spray nozzle where air is mixed with water supplied under pressure.
  • the lower part 3 of the through hole has a smaller diameter and is tapped.
  • the inlet channels 4 In the wall of the chamber 2 there are two air inlet channels 4, connecting the chamber with the atmosphere, the inlet openings 5 of which are situated outside the seat 9 and the outlet openings 6 are in the chamber 2.
  • the outlet openings 6 are arranged above the nozzle 12, at a certain distance from the chamber face so that the chamber's cylindrical part directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above them.
  • the number of inlet channels 4 can be different from two.
  • the channels have equal or different diameters less than the diameter of the chamber 2 and are circular in cross-section.
  • the inlet channels 4 are arranged oppositely each other on both sides of the chamber 2.
  • the axes of the channels 4 are situated at an equal distance X from the axial plane of the chamber 2, the axis of one channel is situated on one side of this plane whereas the axis of the other channel is on the other side.
  • the side surfaces of the channels 4 are one side internally tangent to the side of the chamber 2 causing that the air can be swirled more effectively. It is advantageous when the side surfaces of the channels 4 are one side internally tangent to the chamber 2 enabling the air to be swirled more intensively but they also can be arranged otherwise.
  • the axes of the inlet channels 4 are inclined relative to the axis of the chamber 2 and converge towards the chamber outlet.
  • the axes of the channels intersect with the axial plane on the same or different level(s) and also can converge at one point.
  • the inlet channels are made so that the surface areas P6 of the outlet openings 6 are greater than the surface areas P5 of the inlet openings 5. It is especially advantageous when the ratio of the area P6 to the area P5 is over 1,16.
  • the ratios of the surface areas for individual inlet channels can be equal or different.
  • the base 10 there is a water channel 11 which is situated perpendicularly to the longitudinal axis of the seat 9.
  • a spray end- piece 13 of the water nozzle 12 providing a conical water jet, screwed into the lower part 3 of the through hole.
  • the spray end-piece 13 is outside shaped like a cone the lower greater part of which is terminated in a cylindrical head.
  • a gauze filter 14 sealed with a packing ring on the perimeter and connected with the water channel 11.
  • From the bottom the spray nozzle 12 is terminated in a head shaped like a hexagon or another polygon projecting beyond the base 10.
  • the nozzle 12 is supplied with water fed by the water channel 11 from the lateral side of the through hole of the seat 9.
  • inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is arranged in the chamber 2 as shown in Fig. 4 and Fig. 6.
  • the injection sprayer consists of a seat 15 and a spray water nozzle 17 mounted in it, advantageously providing a conical spray water jet.
  • the seat 15, constituting the body of the injection sprayer is shaped like a roll with the base shaped like a ring 16 bearing external thread and having a diameter less than the body diameter.
  • the seat 15 has a through hole along its longitudinal axis.
  • the through hole is two-stage and consists of the upper part with a greater diameter, constituting the chamber 2 for water nozzle where air is mixed with water supplied under pressure.
  • the lower part of the through hole is smaller in diameter and tapped.
  • the inlet channels 4 In the wall of the chamber there are two air inlet channels 4, connecting the chamber with the atmosphere, the inlet openings 5 of which are situated outside the seat 15 whereas the outlet openings 6 are arranged inside the chamber 2.
  • the outlet openings 6 are situated above the spray nozzle 17, at a certain distance from the chamber face so that the cylindrical chamber section directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above them.
  • the channels have equal or different diameters which are less than the diameter of the chamber 2 and circular in shape in cross-section.
  • the inlet channels 4 are arranged oppositely each other on both sides of the chamber 2.
  • the axes of the channels are situated at an equal distance X from the axial plane of the chamber, and namely the axis of one channel on one side and the axis of the other channel on the other side of this plane.
  • the side surfaces of the channels 4 are one side internally tangent to the wall of the chamber 2 causing that the air is swirled more effectively.
  • the axes of the inlet channels 4 are inclined relative to the axis of the chamber 2 and converge towards the chamber outlet.
  • the axes of the channels intersect with the axial plane on the same or different level(s) and also can converge at one point.
  • the inlet channels 4 are made so that the surface areas P6 of the outlet openings 6, situated in the chamber 2, are greater than the surface areas P5 of the inlet openings 5. It is especially advantageous if the ratio of the surface area P 6 to the area P 5 exceeds 1,16.
  • the ratios of the surface areas for individual inlet channels can be equal or different.
  • a spray end-piece 18 of the nozzle 17 providing a conical jet and it is screwed in the lower section of the through channel and sealed with a packing ring.
  • the nozzle is supplied with water from the bottom of the through hole in the body of the seat 15.
  • the spray end-piece 18 of the nozzle is shaped outside like a cylindrical head with a centrally placed recess of hexagonal or polygonal shape.
  • the seat 1 of the injection sprayer is shaped as a roll the diameter of which becomes smaller and smaller from a certain point so that the base has the form of a rounded truncated cone and the whole has a through hole.
  • the through hole is two-stage and consists of the upper part with a greater diameter, constituting a chamber 2 for a spray nozzle where air is mixed with water supplied under pressure.
  • the lower part 3 of the through hole has a smaller diameter, is tapped and the spray water nozzle is mounted in it.
  • the outlet opening 6 is situated above the spray nozzle at a certain distance from the chamber face so that the cylindrical chamber section directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above it.
  • the inlet channel 4 is circular in shape in cross-section and its diameter is smaller than the diameter of the chamber 2.
  • the inlet channel 4 is inclined relative to the axial plane of the chamber and directed towards the outlet of the chamber 2.
  • the axis of the channel 4 is situated at a distance X from the axial plane of the chamber 2.
  • the side surface of this channel is one side internally tangent to the wall of the chamber 2 causing that the air is swirled more effectively.
  • the inlet channel 4 is made so that the surface area P6 of the outlet opening 6 is greater than the surface area P5 of the inlet opening 5. It is especially advantageous if the ratio of the area P6 to the area P5 is greater than 1,16.
  • the ratios of the surface areas for individual channels can be equal or different.
  • Example VII A solution analogous as in Example VII but the air inlet channel 4' is shaped like a truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Fig. 10 and Fig. 12.
  • the seat 1 of the injection sprayer is shaped as a roll the diameter of which becomes smaller and smaller from a certain point so that the base has the form of a rounded truncated cone and the whole has a through hole along its longitudinal axis.
  • the through hole is two-stage and consists of the upper part with a greater diameter, constituting a chamber 2 for a spray nozzle where air is mixed with water supplied under pressure.
  • the lower part 3 of the through hole has a smaller diameter, is tapped and the spray water nozzle is mounted in it.
  • the outlet openings 6 are situated above the spray nozzle at a certain distance from the chamber face so that the cylindrical chamber section directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above them.
  • the channels have equal or different diameters, smaller than the diameter of the chamber 2, and are circular in shape in cross-section.
  • the inlet channels 4 are arranged oppositely each other on both sides of the chamber 2.
  • the axes of the channels are situated at an equal distance X from the axial plane of the chamber, and namely on one side of this plane it is situated the axis of one channel and on the other side the axis of the other channel.
  • the side surfaces of the channels 4 are one side internally tangent to the chamber 2 causing that the air is swirled more effectively.
  • the axes of the inlet channels 4 are inclined relative to the axial plane of the chamber 2 and converge towards the chamber outlet.
  • the axes of the channels intersect with the axial plane on the same or different level(s) and also can converge at one point.
  • the inlet channels 4 are made so that the surface areas P6 of the outlet openings 6 are greater than the surface areas P5 of the inlet openings 5. It is especially advantageous if the ratio of the surface area P6 to the area P5 exceeds 1,16.
  • the ratios of the surface areas for individual channels can be equal or different.
  • Example XI A solution analogous as in Example IX but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Fig. 13 and Fig. 15.
  • Example XI A solution analogous as in Example IX but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Fig. 13 and Fig. 15.
  • Example XI A solution analogous as in Example IX but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Fig. 13 and Fig. 15.
  • the seat 1 contains three air inlet channels 4 which are evenly distributed on the circumference and their axes are displaced by a distance X, in one direction, relative to the axial plane of the chamber 2.
  • the seat 15 of the injection sprayer has the body shaped like a roll with the base shaped like a ring 16 bearing external thread and having a diameter less than that of the body.
  • the seat 15 has a through hole along its longitudinal axis.
  • the through hole is two-stage and consists of the upper part with a greater diameter, constituting the chamber 2 for a water nozzle where air is mixed with water supplied under pressure.
  • the lower part 3 of the through hole is smaller in diameter and tapped, and the spray water nozzle is mounted in it.
  • the outlet opening 6 is situated above the spray nozzle at a certain distance from the chamber face so that the cylindrical chamber section directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above it.
  • the inlet channel 4 is inclined relative to the axial plane of the chamber and directed towards the outlet of the chamber 2.
  • the inlet channel 4 is circular in shape in cross- section and its diameter is smaller than that of the chamber 2.
  • the axis of the channel 4 is situated at a distance X from the axial plane of the chamber 2.
  • the side surface of this channel may be one side internally tangent to the wall of the chamber 2 causing that the air is swirled more effectively.
  • the inlet channel 4 is made so that the surface area P6 of the outlet opening 6 is greater than the surface area P5 of the inlet opening 5. It is especially advantageous if the ratio of the area P6 to the area P5 is greater than 1,16.
  • the ratios of the surface areas for individual channels can be equal or different.
  • Example XV A solution analogous to that in Example VII but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Fig. 19 and Fig. 21.
  • Example XV A solution analogous to that in Example VII but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Fig. 19 and Fig. 21.
  • Example XV A solution analogous to that in Example VII but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Fig. 19 and Fig. 21.
  • Example XV A solution analogous to that in Example VII but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid
  • the seat 15 of the injection sprayer has the body shaped like a roll with the base shaped like a ring 16 bearing external thread and having a diameter less than that of the body.
  • the through hole is two-stage and consists of the upper part with a greater diameter, constituting the chamber 2 for a water nozzle where air is mixed with water supplied under pressure.
  • the lower part 3 of the through hole is smaller in diameter and tapped, and the spray water nozzle is mounted in it.
  • the outlet openings 6 are situated above the spray nozzle, at a certain distance from the chamber face so that the cylindrical chamber section directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above them.
  • the channel have equal or different diameters which are less than that of the chamber 2 and circular in shape in cross-section.
  • the inlet channels 4 are arranged oppositely each other on both sides of the chamber 2.
  • the axes of the channels are situated at an equal distance X from the axial plane of the chamber, and namely the axis of one channel is situated on one side and the axis of the other channel on the other side of this plane.
  • the side surfaces of the channels 4 can be one side internally tangent to the wall of the chamber 2 causing that the air is swirled more effectively.
  • the axes of the inlet channels 4 are inclined relative to the axis of the chamber 2 and converge towards the chamber outlet.
  • the axes of the channels intersect with the axial plane on the same or different level(s) and also can converge at one point.
  • the inlet channels 4 are made so that the surface areas P6 of the outlet openings 6 are greater than the surface areas P5 of the inlet openings 5. It is especially advantageous if the ratio of the surface area P 6 to the area P5 exceeds 1,16.
  • the ratios of the surface areas for individual inlet channels can be equal or different.
  • Example XVIII a solution analogous to that described in Example XV but the seat 15 contains three air inlet channels 4 which are evenly distributed on the circumference and their axes are displaced by a distance X, in one direction, relative to the axial plane of the chamber 2.
  • the side surfaces of these channels are one side internally tangent to the wall of the chamber 2 what causes that the atomized liquid yet is swirled more effectively.
  • the spray nozzle mounted in the seat it is supplied water or a mixture of it under a defined pressure from the bottom of the chamber. From the spray nozzle it is ejected a yet shaped like a cone, filling the chamber with the atomized liquid at the height of the upper edges of the outlet openings of the air channels and moving in the cylindrical section towards the chamber outlet. As a result of injection this action causes that a pressure below atmospheric develops in the chamber, at the height of the outlet openings of the channels, drawing in air through the inlet openings from outside of the seat.
  • the value of the pressure below atmospheric is the more, the more it is the surface area or the sum of the surface areas of the outlet openings of inlet channels situated in the chamber and in consequence of this a greater amount of liquid being ejected from the spray nozzle and a greater degree of its atomization (disintegration).

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Abstract

The injection sprayer destined especially for a mining organ of a combined cutter loader contains a seat (1) with a through hole along its longitudinal axis, the through hole where a spray nozzle (7) delivering a conical water jet is mounted and sealed. The upper part of the through hole constitutes a chamber (2) to which one or more air inlet channels (4) are led, and the axes of these channels are inclined and converge towards the port of the chamber. The air inlet channels (4) are made so that the surface areas (P6) of their outlet openings (6) inside the chamber (2) are greater than the surface areas (P5) of their inlet openings (5) situated outside the seat (1). Advantageously, the ratio of these surface areas (P6 : P5) exceeds 1,16. The seat (1) has the form of a solid of revolution with a through hole along its longitudinal axis where the upper part of this hole constitutes a chamber (2) for a water nozzle, and in the walls of the chamber of the nozzle one or more air inlet channels (4) are arranged, and the axes of these channels are inclined and converge towards the port of the chamber. The air inlet channels (4) are made so that the surface areas (P6) of their outlet openings (6) inside the chamber (2) are greater than the surface areas (P5) of their inlet openings (5) arranged outside the seat (1). Advantageously, the ratio of these surface areas (P6 : P5) exceeds 1,16.

Description

Injection sprayer and injection sprayer seat
The subject of the invention is an injection sprayer and a seat for the injection sprayer destined for the use especially in mining organs of combined mining loaders for dust conditions and fire hazard control as well as to cool cutter picks.
From the Polish patent specification PL 172259 Bl it is well-known a pick holder for a shearer drum and a cutting head of a mechanical miner or machine for cutting drifts or tunnels, which contains near the pick a water nozzle mounted in a seat containing a chamber opened for water jet, to which the air inlet in the form of two channels situated oppositely each other in the side walls of the seat is made. The diameter of the seat is equal to that of the chamber. The water spray jet outgoing from the water nozzle takes the air flowing in the chamber through the lateral openings so that a water/air spray jet develops, which is directed through the cylindrical end section of the chamber to the pick blade. The water nozzle is mounted in a screwed closing plug from the bottom of the chamber to which it is led a water nozzle supplying system connected with a channel made in the body of the pick holder.
From the Polish patent specification No. PL 193928 Bl it is well-known an injection sprayer containing a seat in which a water nozzle is mounted. The nozzle seat, constituting the body of this device, is shaped like a roll the base of which is shaped like a truncated cone and has a through hole along its longitudinal axis. The through hole constitutes in its upper part a chamber in which the tip of the water nozzle is placed whereas the water nozzle is screwed in the lower part of the through hole. In the wall of the body there is(are) one or more air inlet channel(s) connecting the chamber with the atmosphere. The outlet openings of the channels are arranged in the chamber and the inlet openings outside the seat. The axes of the inlet channels are inclined and converge towards the port of the chamber but their outlet openings in the chamber are situated above the nozzle and the diameters of these channels are less than the chamber diameter. The side surfaces of these outlet openings are one side internally tangent to the chamber wall. The spray nozzle is provided with an insert bearing helical grooves on its external surface and they swirl the water jet. The direction of getting the air from the inlet channels to the chamber is coincident with the direction of the screw line of the grooves. The water jet ejecting from the nozzle draws in on the principle of injection the air from outside of the body which is supplied then into the chamber by the inlet channels. From the chamber it is ejected a jet of water/air mixture. Because the air stream fed to the chamber is tangent to it, it is subject to swirling action due to the Coanda effect. The direction of swirling of the water jet is the same as the direction of the air stream drawn into the chamber causing that the developed jet of water/air mixture is advantageously atomized and the ejection of it from the chamber gives optimal effects in dust control and quenching sparks arising during the process of winning with a mining organ in which the sprayers are situated near each cutter pick.
According to the invention, the injection sprayer containing a seat with a chamber where in the seat a spray nozzle is mounted, having one or more air inlet channels the axes of which are inclined each other and converge towards the port of the chamber is characterised in that the air inlet channels are made so that the surface areas of their outlet openings situated in the chamber are greater than the surface areas of their inlet openings situated outside the seat. Advantageously, the ratio of the surface area of the outlet opening to the surface area of the inlet opening is greater than 1,16. The ratios of these surface areas for individual inlet channels can be equal or different. Advantageously, the cross-sections of the air inlet channels are circular in shape. Advantageously, the inlet channels are shaped like a circular truncated cone or conical ellipsoid the greater base of which is placed in the chamber. Advantageously, the axes of the inlet channels are situated at a certain distance from the axial plane of the chamber but it is advantageous if the side surfaces of the inlet channels are one side internally tangent to the chamber wall. The axes of the air inlet channels can intersect at one point but they also can intersect with the axial plane of the chamber on the same or different level(s). Advantageously, the diameters of the air inlet channels are equal, advantageously smaller than the chamber diameter. It is advantageous if the spray nozzle delivers a jet of atomized water conical in shape. Advantageously, the spray nozzle is placed in the lower part of the through hole, below the chamber, and is screwed. The nozzle body is sealed, advantageously with a packing ring situated below the chamber. Advantageously, the spray end-piece of the nozzle situated in the chamber has the form of a head polygonal in shape. Advantageously, the spray end-piece of the nozzle situated in the chamber is shaped like a truncated cone the greater base of which is supported on a cylindrical head. Advantageously, the spray end-piece of the nozzle is shaped like a cylindrical head containing a polygonal recess. It is advantageous that the seat has the form of a body of revolution, advantageously shaped like a roll the diameter of which becomes smaller and smaller from a certain point so that the base has the form of a rounded truncated cone. In another form the seat is shaped like a roll having a flanged base where on the water nozzle body it is mounted a gauze filter connected with the water channel situated in the flanged base at an angle relative to the axial plane of the chamber. Advantageously, the seat is shaped like a roll the base of which is shaped like a ring with external thread the diameter of which is less than the roll diameter.
According to the invention, the seat of the injection sprayer the body of which is shaped like a solid having a through hole along its longitudinal axis and the upper part of the through hole constitutes the chamber of the water nozzle and in the walls of the chamber of the nozzle there is/are one or more air inlet channel(s) the axes of which are inclined each other and converge towards the port of the chamber is characterised in that the air inlet channels are made so that the surface areas of the outlet openings inside the chamber are greater than the surface areas of the inlet openings situated outside the seat. Advantageously, the ratio of the surface area of the outlet opening to the surface area of the inlet opening is greater than 1,16 but the ratios of these areas can be equal or different for individual inlet channels. Advantageously, the cross- sections of the air inlet channels are circular in shape. Advantageously, the air inlet channels are shaped like a circular truncated cone the greater base of which is situated in the chamber. The axes of the air inlet channels can converge at one point but they also may intersect with the axial plane of the chamber on the same or different level(s). Advantageously, the diameters of the air inlet channels are equal, advantageously smaller than the chamber diameter. Advantageously, the axes of the air inlet channels are situated at a certain distance from the axial plane of the chamber but it is advantageous if the side surfaces of the inlet channels are one side internally tangent to the chamber. Advantageously, the body of the seat is shaped like a roll the diameter of which becomes smaller and smaller from a certain point so that the base has the form of a rounded truncated cone and it is advantageous if the through hole in the lower part is tapped. Advantageously, the body of the seat is shaped like a roll and closed by a flanged base and, advantageously, in the base there is a water channel inclined towards the axial plane of the chamber. The through hole is tapped in its lower part. Advantageously, the body of the seat is shaped like a roll closed by a base shaped like a ring bearing external thread the diameter of which is smaller than the diameter of the roll, where, advantageously, the through hole is tapped in its lower part. Advantageously, the seat has two inlet channels which are arranged oppositely each other on both sides of the chamber. Advantageously, the seat has three inlet channels which are evenly distributed on the perimeter. The seat also can have one inlet channel.
The solution according to the invention affects advantageously the intensification of the process of elimination of dustiness and fire hazards accompanying the operation of mining plants. Considering that the main task of the sprayer is to catch dust particles and carry them away with the water as soon and effectively as possible and also to eliminate in the bud sparks caused by the mining organ pick striking, for example, against a stone, the problem of essential importance is the. size of a drop of water and the degree of atomization and also the kinetic energy of drops. A spark initiating the process of ignition of methane dispersed in the air is quenched more effectively if the degree of atomization is greater. But, to obtain an optimal effect of binding a drop with a dust particle and to carry it rapidly away, the size of a drop, the degree of atomization and also the kinetic energy of a drop are of essential importance. At the difference between the surface area of the outlet opening and that of the inlet opening the air is swirled stronger, mixed better with spray water causing that the drops are very small as well as increasing the kinetic energy of a drop.
The subject of the invention is explained more precisely in the examples of realization and in the drawing where Fig. 1 shows the longitudinal section of an injection sprayer in the plane B-B as marked in Fig. 2 and Fig. 3, Fig. 2 shows the section of the device /injection sprayer/ in the plane A-A as marked in Fig. 1 , Fig. 3 shows the section of another form of the device depicted in Fig. 1, with conical air inlet channels, in the plane A-A, Fig. 4 shows the longitudinal section of a constructional variant of the device in the plane B-B as marked in Fig. 5 and in Fig. 6, Fig. 5 shows the section of the device in the plane A-A as marked in Fig. 4, Fig. 6 shows the section of another variant of the device depicted in Fig. 4, with conical air inlet channels, in the plane A-A, Fig. 7 shows the longitudinal section of another variant of the injection sprayer made in the plane B-B as marked in Fig. 8 and in Fig. 9, Fig. 8 shows the section of the device in the plane A-A as marked in Fig. 7, Fig. 9 shows the section of another variant of the device from Fig. 7, with conical air inlet channels, which is made in the plane A-A, Fig. 10 shows the longitudinal section of the seat of the injection sprayer in the plane B-B as marked in Fig. 11 and in Fig. 12, Fig. 11 shows the section of the seat in the plane A-A as marked in Fig. 10, Fig. 12 shows the section of another variant of the seat from Fig. 10, with a conical air inlet channel, in the plane A-A, Fig. 13 shows the longitudinal section of constructional variants of the seat in the plane B-B as marked in Fig. 14 and in Fig. 15, Fig. 14 shows the section of the seat in the plane A-A as marked in Fig. 13, Fig. 15 shows the section of another form of the seat from Fig. 13, with conical air inlet channels, in the plane A-A, Fig. 16 shows the longitudinal section of constructional variants of the seat in the plane B-B as marked in Fig. 17 and in Fig. 18, Fig. 17 shows the section of the seat in the plane A-A as marked in Fig. 16, Fig. 18 shows the section of another form of the seat from Fig. 16, with conical air inlet channels, in the plane A-A, Fig. 19 shows the longitudinal section of constructional variants of the seat in the plane B-B as marked in Fig. 20 and in Fig. 21, Fig. 20 shows the section of the seat in the plane A-A as marked in Fig. 19, Fig. 21 shows the section of another form of the seat from Fig. 19, with a conical air inlet channel, in the plane A-A, Fig. 22 shows the longitudinal section of further constructional variants of the seat in the plane B-B as marked in Fig. 23 and in Fig. 24, Fig. 23 shows the section of the seat in the plane A-A as marked in Fig. 22, Fig. 18 shows the section of another form of the seat from Fig. 22, with conical air inlet channels, in the plane A-A, Fig. 25 shows the longitudinal section of further constructional variants of the seat in the plane B-B as marked in Fig. 26 and in Fig. 27, Fig. 26 shows the section of the seat in the plane A-A as marked in Fig. 25, Fig. 27 shows the section of another form of the seat from Fig. 25, with conical air inlet channels, in the plane A-A.
Example 1
As shown in Figs. 1-2, the injection sprayer consists of a seat 1 and a water nozzle 7 mounted in it, advantageously with a conical atomized water jet. The seat 1, constituting the body of the sprayer, is shaped like a roll the diameter of which becomes smaller and smaller from a certain point so that the base has the form of a rounded truncated cone and the whole has a through hole along its longitudinal axis. The through hole is two-section and consists of the upper part with a greater diameter, constituting the chamber 2 for the spray nozzle 7, and in the chamber air is mixed with water supplied under pressure. The lower part of the through hole has a smaller diameter and is tapped. In the wall of the chamber there are two air inlet channels 4, connecting the chamber with the atmosphere, the inlet openings of which are arranged outside the seat 1 whereas the outlet openings 6 are situated in the chamber 2. The outlet openings are arranged above the nozzle 7, at a certain distance from the face surface of the chamber so that the cylindrical part of the chamber directing the jet of atomized liquid/air mixture towards the port of the chamber is situated above them. The number of inlet channels can be different from two. The inlet channels 4 are circular in cross-section and have equal or different diameters less than the diameter of the chamber 2. The inlet channels are arranged oppositely each other on both sides of the chamber 2, and their axes are situated at an equal distance X from the axial plane of the chamber. The axis of one channel is situated on one side of this plane whereas that of the other on the other /opposite/ side. At an optimal constructional variant the side surfaces of the channels 4 are one side internally tangent to the wall of the chamber 2 enabling the air to be swirled more effectively. The axes of the inlet channels are inclined relative to the axis of the chamber 2 and converge towards the chamber outlet. The axes of these channels intersect with the axial plane of the chamber 2 on the same or different level(s) and also can converge at one point. The inlet channels 4 are made so that the surface areas P6 of the outlet openings 6, situated inside the chamber 2, are greater than the surface areas P5 of the inlet openings arranged outside the seat 1. It is especially advantageous when the ratio of the area P6 to the area P5 is greater than 1,16. The ratios of the surface areas for individual inlet channels can be equal or different. In the chamber 2 it is placed a spray end-piece 8 of the spray nozzle 7 providing a conical spray water jet, mounted so that the bottom part of its body is screwed in the lower part 3 of the through hole. The spray end-piece 8 is shaped like a polygon, for example in the form of hexagonal recessed head. The nozzle is supplied with water from the bottom of the through hole of the seat 1. Example II
A solution analogous to that described in Example I5 but the inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is placed in the chamber 2 as shown in Fig. 1 and Fig. 3.
Example III
As shown in Fig. 4 and Fig. 5, the injection sprayer consists of a seat 9 and a water nozzle 12 which is mounted in it and provides, advantageously, a conical spray water jet. The seat 9, constituting the body of the injection sprayer, is shaped like a roll with the flanged base 10 shaped like a polygon or circular in shape and has a through hole along its longitudinal axis. The through hole is two-stage and consists of the upper part with a greater diameter, constituting the chamber 2 for the spray nozzle where air is mixed with water supplied under pressure. The lower part 3 of the through hole has a smaller diameter and is tapped. In the wall of the chamber 2 there are two air inlet channels 4, connecting the chamber with the atmosphere, the inlet openings 5 of which are situated outside the seat 9 and the outlet openings 6 are in the chamber 2. The outlet openings 6 are arranged above the nozzle 12, at a certain distance from the chamber face so that the chamber's cylindrical part directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above them. The number of inlet channels 4 can be different from two. The channels have equal or different diameters less than the diameter of the chamber 2 and are circular in cross-section. The inlet channels 4 are arranged oppositely each other on both sides of the chamber 2. The axes of the channels 4 are situated at an equal distance X from the axial plane of the chamber 2, the axis of one channel is situated on one side of this plane whereas the axis of the other channel is on the other side. At an optimal constructional variant the side surfaces of the channels 4 are one side internally tangent to the side of the chamber 2 causing that the air can be swirled more effectively. It is advantageous when the side surfaces of the channels 4 are one side internally tangent to the chamber 2 enabling the air to be swirled more intensively but they also can be arranged otherwise. The axes of the inlet channels 4 are inclined relative to the axis of the chamber 2 and converge towards the chamber outlet. The axes of the channels intersect with the axial plane on the same or different level(s) and also can converge at one point. The inlet channels are made so that the surface areas P6 of the outlet openings 6 are greater than the surface areas P5 of the inlet openings 5. It is especially advantageous when the ratio of the area P6 to the area P5 is over 1,16. The ratios of the surface areas for individual inlet channels can be equal or different. In the base 10 there is a water channel 11 which is situated perpendicularly to the longitudinal axis of the seat 9. In the chamber 2 it is placed a spray end- piece 13 of the water nozzle 12 providing a conical water jet, screwed into the lower part 3 of the through hole. The spray end-piece 13 is outside shaped like a cone the lower greater part of which is terminated in a cylindrical head. On the body of the spray nozzle 12 it is mounted a gauze filter 14 sealed with a packing ring on the perimeter and connected with the water channel 11. From the bottom the spray nozzle 12 is terminated in a head shaped like a hexagon or another polygon projecting beyond the base 10. The nozzle 12 is supplied with water fed by the water channel 11 from the lateral side of the through hole of the seat 9.
Example IV
A solution analogous to that described in Example III but the inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is arranged in the chamber 2 as shown in Fig. 4 and Fig. 6.
Example V
As shown in Figs. 7-8, the injection sprayer consists of a seat 15 and a spray water nozzle 17 mounted in it, advantageously providing a conical spray water jet. The seat 15, constituting the body of the injection sprayer, is shaped like a roll with the base shaped like a ring 16 bearing external thread and having a diameter less than the body diameter. The seat 15 has a through hole along its longitudinal axis. The through hole is two-stage and consists of the upper part with a greater diameter, constituting the chamber 2 for water nozzle where air is mixed with water supplied under pressure. The lower part of the through hole is smaller in diameter and tapped. In the wall of the chamber there are two air inlet channels 4, connecting the chamber with the atmosphere, the inlet openings 5 of which are situated outside the seat 15 whereas the outlet openings 6 are arranged inside the chamber 2. The outlet openings 6 are situated above the spray nozzle 17, at a certain distance from the chamber face so that the cylindrical chamber section directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above them. The channels have equal or different diameters which are less than the diameter of the chamber 2 and circular in shape in cross-section. The inlet channels 4 are arranged oppositely each other on both sides of the chamber 2. The axes of the channels are situated at an equal distance X from the axial plane of the chamber, and namely the axis of one channel on one side and the axis of the other channel on the other side of this plane. At an optimal constructional variant the side surfaces of the channels 4 are one side internally tangent to the wall of the chamber 2 causing that the air is swirled more effectively. The axes of the inlet channels 4 are inclined relative to the axis of the chamber 2 and converge towards the chamber outlet. The axes of the channels intersect with the axial plane on the same or different level(s) and also can converge at one point. The inlet channels 4 are made so that the surface areas P6 of the outlet openings 6, situated in the chamber 2, are greater than the surface areas P5 of the inlet openings 5. It is especially advantageous if the ratio of the surface area P 6 to the area P 5 exceeds 1,16.
The ratios of the surface areas for individual inlet channels can be equal or different. In the chamber 2 it is mounted a spray end-piece 18 of the nozzle 17 providing a conical jet and it is screwed in the lower section of the through channel and sealed with a packing ring. The nozzle is supplied with water from the bottom of the through hole in the body of the seat 15. The spray end-piece 18 of the nozzle is shaped outside like a cylindrical head with a centrally placed recess of hexagonal or polygonal shape.
Example VI
A solution analogous as in Example V but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is arranged in the chamber 2 as shown in Fig. 7 and Fig. 9.
Example VII
As shown in Figs. 10-11, the seat 1 of the injection sprayer is shaped as a roll the diameter of which becomes smaller and smaller from a certain point so that the base has the form of a rounded truncated cone and the whole has a through hole. The through hole is two-stage and consists of the upper part with a greater diameter, constituting a chamber 2 for a spray nozzle where air is mixed with water supplied under pressure. The lower part 3 of the through hole has a smaller diameter, is tapped and the spray water nozzle is mounted in it. In the wall of the chamber 2 there is an air inlet channel 4, connecting the chamber with the atmosphere, the inlet opening 5 of which is situated outside the seat 1 whereas the outlet opening 6 is placed in the chamber 2. The outlet opening 6 is situated above the spray nozzle at a certain distance from the chamber face so that the cylindrical chamber section directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above it. The inlet channel 4 is circular in shape in cross-section and its diameter is smaller than the diameter of the chamber 2. The inlet channel 4 is inclined relative to the axial plane of the chamber and directed towards the outlet of the chamber 2. The axis of the channel 4 is situated at a distance X from the axial plane of the chamber 2. At an optimal variant the side surface of this channel is one side internally tangent to the wall of the chamber 2 causing that the air is swirled more effectively. The inlet channel 4 is made so that the surface area P6 of the outlet opening 6 is greater than the surface area P5 of the inlet opening 5. It is especially advantageous if the ratio of the area P6 to the area P5 is greater than 1,16. The ratios of the surface areas for individual channels can be equal or different. Example VIII
A solution analogous as in Example VII but the air inlet channel 4' is shaped like a truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Fig. 10 and Fig. 12.
Example IX
As shown in Figs. 13-14, the seat 1 of the injection sprayer is shaped as a roll the diameter of which becomes smaller and smaller from a certain point so that the base has the form of a rounded truncated cone and the whole has a through hole along its longitudinal axis. The through hole is two-stage and consists of the upper part with a greater diameter, constituting a chamber 2 for a spray nozzle where air is mixed with water supplied under pressure. The lower part 3 of the through hole has a smaller diameter, is tapped and the spray water nozzle is mounted in it. In the wall of the chamber 2 there are two air inlet channels 4, connecting the chamber with the atmosphere, the inlet openings 5 of which are situated outside the seat 1 whereas the outlet openings 6 are arranged in the chamber 2. The outlet openings 6 are situated above the spray nozzle at a certain distance from the chamber face so that the cylindrical chamber section directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above them. The channels have equal or different diameters, smaller than the diameter of the chamber 2, and are circular in shape in cross-section. The inlet channels 4 are arranged oppositely each other on both sides of the chamber 2. The axes of the channels are situated at an equal distance X from the axial plane of the chamber, and namely on one side of this plane it is situated the axis of one channel and on the other side the axis of the other channel. At an optimal constructional variant the side surfaces of the channels 4 are one side internally tangent to the chamber 2 causing that the air is swirled more effectively. The axes of the inlet channels 4 are inclined relative to the axial plane of the chamber 2 and converge towards the chamber outlet. The axes of the channels intersect with the axial plane on the same or different level(s) and also can converge at one point. The inlet channels 4 are made so that the surface areas P6 of the outlet openings 6 are greater than the surface areas P5 of the inlet openings 5. It is especially advantageous if the ratio of the surface area P6 to the area P5 exceeds 1,16. The ratios of the surface areas for individual channels can be equal or different. Example X
A solution analogous as in Example IX but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Fig. 13 and Fig. 15. Example XI
As shown in Fig. 16-17, a solution analogous to that described in Example IX but the seat 1 contains three air inlet channels 4 which are evenly distributed on the circumference and their axes are displaced by a distance X, in one direction, relative to the axial plane of the chamber 2.
Example XII
A solution analogous to that in Example VII but the air inlet channel 4' is shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Fig. 16 and Fig. 18.
Example XIII
As shown in Figs. 19-20, the seat 15 of the injection sprayer has the body shaped like a roll with the base shaped like a ring 16 bearing external thread and having a diameter less than that of the body. The seat 15 has a through hole along its longitudinal axis. The through hole is two-stage and consists of the upper part with a greater diameter, constituting the chamber 2 for a water nozzle where air is mixed with water supplied under pressure. The lower part 3 of the through hole is smaller in diameter and tapped, and the spray water nozzle is mounted in it. In the wall of the chamber 2 there is one air inlet channel 4 the inlet opening 5 of which is arranged outside the seat 15 whereas the outlet opening 6 is inside the chamber 2. The outlet opening 6 is situated above the spray nozzle at a certain distance from the chamber face so that the cylindrical chamber section directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above it. The inlet channel 4 is inclined relative to the axial plane of the chamber and directed towards the outlet of the chamber 2. The inlet channel 4 is circular in shape in cross- section and its diameter is smaller than that of the chamber 2. The axis of the channel 4 is situated at a distance X from the axial plane of the chamber 2. The side surface of this channel may be one side internally tangent to the wall of the chamber 2 causing that the air is swirled more effectively. The inlet channel 4 is made so that the surface area P6 of the outlet opening 6 is greater than the surface area P5 of the inlet opening 5. It is especially advantageous if the ratio of the area P6 to the area P5 is greater than 1,16. The ratios of the surface areas for individual channels can be equal or different.
Example XIV
A solution analogous to that in Example VII but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Fig. 19 and Fig. 21. Example XV
As shown in Figs. 22-23, the seat 15 of the injection sprayer has the body shaped like a roll with the base shaped like a ring 16 bearing external thread and having a diameter less than that of the body. The through hole is two-stage and consists of the upper part with a greater diameter, constituting the chamber 2 for a water nozzle where air is mixed with water supplied under pressure. The lower part 3 of the through hole is smaller in diameter and tapped, and the spray water nozzle is mounted in it. In the wall of the chamber 2 there are two air inlet channels 4, the inlet openings 5 of which are situated outside the seat 15 whereas the outlet openings 6 are arranged inside the chamber 2. The outlet openings 6 are situated above the spray nozzle, at a certain distance from the chamber face so that the cylindrical chamber section directing the jet of atomized liquid/air mixture towards the chamber outlet is situated above them. The channel have equal or different diameters which are less than that of the chamber 2 and circular in shape in cross-section. The inlet channels 4 are arranged oppositely each other on both sides of the chamber 2. The axes of the channels are situated at an equal distance X from the axial plane of the chamber, and namely the axis of one channel is situated on one side and the axis of the other channel on the other side of this plane. The side surfaces of the channels 4 can be one side internally tangent to the wall of the chamber 2 causing that the air is swirled more effectively. The axes of the inlet channels 4 are inclined relative to the axis of the chamber 2 and converge towards the chamber outlet. The axes of the channels intersect with the axial plane on the same or different level(s) and also can converge at one point. The inlet channels 4 are made so that the surface areas P6 of the outlet openings 6 are greater than the surface areas P5 of the inlet openings 5. It is especially advantageous if the ratio of the surface area P 6 to the area P5 exceeds 1,16. The ratios of the surface areas for individual inlet channels can be equal or different.
Example XVI
A solution analogous to that described in Example XV but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is arranged in the chamber 2 as shown in Fig. 22 and Fig. 24.
Example XVII
As shown in Fig. 25-26, a solution analogous to that described in Example XV but the seat 15 contains three air inlet channels 4 which are evenly distributed on the circumference and their axes are displaced by a distance X, in one direction, relative to the axial plane of the chamber 2. At an optimal constructional variant the side surfaces of these channels are one side internally tangent to the wall of the chamber 2 what causes that the atomized liquid yet is swirled more effectively. Example XVIII
A solution analogous to that in Example XVII but the air inlet channels 4' are shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber 2 as shown in Figs. 25-27.
To the spray nozzle mounted in the seat it is supplied water or a mixture of it under a defined pressure from the bottom of the chamber. From the spray nozzle it is ejected a yet shaped like a cone, filling the chamber with the atomized liquid at the height of the upper edges of the outlet openings of the air channels and moving in the cylindrical section towards the chamber outlet. As a result of injection this action causes that a pressure below atmospheric develops in the chamber, at the height of the outlet openings of the channels, drawing in air through the inlet openings from outside of the seat. The value of the pressure below atmospheric is the more, the more it is the surface area or the sum of the surface areas of the outlet openings of inlet channels situated in the chamber and in consequence of this a greater amount of liquid being ejected from the spray nozzle and a greater degree of its atomization (disintegration). Having a defined pressure below atmospheric and the difference of the surface areas of the outlet openings situated inside the chamber and that of the inlet openings arranged outside the seat, one obtains an increase in the energy of the movement of air being drawn in. The air, getting in the chamber, mixes with the cone of liquid ejecting from the spray nozzle. As a result of this action the liquid is broken in very small particles and atomized to a greater degree. It is obtained a very uniform mixture of air and liquid in the form of very small drops which have accordingly a great kinetic energy. Such a mixture presents a very effective method to remove dust from the air and to limit methane hazards in the process of mining.

Claims

Patent claims
1. The injection sprayer destined especially for a mining organ of a combined cutter loader, containing a body in the form of a seat, advantageously in the form of a solid of revolution, with a through hole along the longitudinal axis of the body, the through hole where a spray nozzle is mounted and the upper part of that constitutes a mixing chamber to which one or more air inlet channel(s) is(are) led, and the axes of the channels are inclined each other and converge towards the port of the chamber, characterised in that the air inlet channels (4,4') are made so that the surfaces areas (P6) of their outlet openings (6) situated in the chamber (2) are greater than the surfaces areas (P5) of their inlet openings (5) situated outside the seat (1,9,15).
2. The device as claimed in claim 1 characterised in that the ratio of the surface area (P 6) of the outlet opening to the surface area (P5) of the inlet opening is greater than 1,16.
3. The device as claimed in claim 1 or 2 characterised in that the ratios of the surface areas (P6 : P5) for individual inlet channels are equal.
4. The device as claimed in claim 1 or 2 characterised in that the ratios of the surface areas (P6 : P5) for individual inlet channels are different.
5. The device as claimed in claim 1 characterised in that the cross-sections of the air inlet channels (4) are circular.
6. The device as claimed in claim 1 characterised in that the air inlet channels (4') are shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber (2).
7. The device as claimed in claim 1 or 5 or 6 characterised in that the axes of the inlet channels (4,4') are situated at a distance (X) from the axial plane of the chamber (2).
8. The device as claimed in claim 1 or 7 characterised in that the side surfaces of the inlet channels (4,4') are one side internally tangent to the wall of the chamber (2).
9. The device as claimed in claim 1 or 7 characterised in that the axes of the air inlet channels (4,4') converge at one point.
10. The device as claimed in claim 1 or 7 characterised in that the axes of the air inlet channels (4,4') go through the axial plane of the chamber (2) on the same level.
11. The device as claimed in claim 1 or 7 characterised in that the axes of the air inlet channels (4,4') go through the axial plane of the chamber (2) on various levels.
12. The device as claimed in claim 1 or 5 or 6 characterised in that the seat (1) is shaped like a roll with the base shaped like a rounded truncated cone.
13. The device as claimed in claim 1 or 5 or 6 characterised in that the seat (9) is shaped like a roll with a flanged base (10) where in the flanged base (10) it is arranged a water supply channel (11) situated at an angle relative to the axial plane of the chamber (2) and connected with a filter (14) mounted on the body of the spray nozzle (12).
14. The device as claimed in claim 1 or 5 or 6 characterised in that it contains a seat (15) shaped like a roll ended with the base shaped like a ring (16) bearing external thread the diameter of which is smaller than the roll diameter.
15. The device as claimed in claim 1 or 12 or 13 or 14 characterised in that the spray nozzle (7,12,17) delivering a conical spray water jet is situated in the chamber (2) of the seat (1,9,15).
16. The device as claimed in claim 1 or 12 or 13 or 14 characterised in that it has two inlet channels (4,4') which are arranged oppositely each other on both sides of the chamber (2).
17. The device as claimed in claim 1 or 12 or 13 or 14 characterised in that it has three inlet channels (4,4') which are evenly distributed on the perimeter.
18. The device as claimed in claim 1 or 12 or 13 or 14 characterised in that it has one inlet channel (4,4').
19. The device as claimed in claim 15 characterised in that the spray end-piece (8) of the nozzle (7) has the form of a polygonal head, and the nozzle itself is screwed in the lower part (3) of the through hole of the seat (1).
20. The device as claimed in claim 15 characterised in that the spray end-piece (13) of the nozzle (12) is shaped like a truncated cone the greater base of which is supported on a cylindrical head, and the nozzle itself is screwed in the lower part (3) of the seat (9).
21. The device as claimed in claim 15 characterised in that the spray end-piece (18) of the nozzle (17) has the form of a cylindrical head containing a polygonal driver recess, and the nozzle itself is screwed in the lower part (3) of the seat (15).
22. The seat of the injection sprayer, destined especially for a mining organ of a combined cutter loader, the body of which is shaped like a solid, advantageously a solid of revolution, having a through hole along its longitudinal axis where the upper part of the through hole constitutes the chamber of a water nozzle and in the side wall of the body there is/are one or more air inlet channel(s) connecting the chamber with the atmosphere, and the axes of these channels are inclined each other and converge towards the port of the chamber, is characterised in that the air inlet channels (4,4') are made so that the surface areas (P6) of their outlet openings (6) inside the chamber (2) are greater than the surface areas (P5) of their inlet openings (5) situated outside the seat (1,9,15).
23. The seat as claimed in claim 22 characterised in that the ratio of the surface area (P 6) of the outlet opening to the surface area (P5) of the inlet opening is greater than 1,16.
24. The seat as claimed in claim 22 characterised in that the ratios of the surface areas (P6 : P5) for individual inlet channels (4,4') are equal.
25. The seat as claimed in claim 22 characterised in that the ratios of the surface areas (P6 : P5) or individual inlet channels (4,4') are different.
26. The seat as claimed in claim 22 characterised in that the cross-sections of the air inlet channels (4) are circular.
27. The seat as claimed in claim 22 characterised in that the air inlet channels (4') are shaped like a circular truncated cone or conical ellipsoid the greater base of which is situated in the chamber (2).
28. The seat as claimed in claim 22 characterised in that the axes of the inlet channels (4,4') are situated at a distance (X) from the axial plane of the chamber (2).
29. The seat as claimed in claim 22 or 28 characterised in that the side surfaces of the inlet channels (4,4') are one side internally tangent to the wall of the chamber (2).
30. The seat as claimed in claim 22 or 28 characterised in that the axes of the air inlet channels (4,4') converge at one point.
31. The seat as claimed in claim 22 or 28 characterised in that the axes of the air inlet channels (4,4') go through the axial plane of the chamber (2) on the same level.
32. The seat as claimed in claim 22 or 28 characterised in that the axes of the air inlet channels (4,4') go through the axial plane of the chamber (2) on various levels.
33. The seat as claimed in claim 22 or 26 or 27 or 28 characterised in that the body of the seat (1) is shaped like a roll with the base shaped like a rounded truncated cone.
34. The seat as claimed in claim 22 or 26 or 27 or 28 characterised in that the body of the seat (9) is shaped like a roll and is ended with a flanged base (10), and in the flanged base (10) it is arranged a water supply channel (11) connected with the through hole of the seat, situated at an angle relative to the axial plane of the chamber (2)
35. The seat as claimed in claim 22 or 26 or 27 or 28 characterised in that the body of the seat (15) is shaped like a roll ended with the base shaped like a ring (16) bearing external thread the diameter of which is smaller than the roll diameter.
36. The seat as claimed in claim 22 or 33 or 34 or 35 characterised in that below the chamber (2), in the lower part (3), the through hole of the seat (1,9,15) is tapped.
37. The seat as claimed in claim 22 or 33 or 34 or 35 characterised in that it has two inlet channels (4,4') which are arranged oppositely each other on both sides of the chamber (2).
38. The seat as claimed in claim 22 or 33 or 34 or 35 characterised in that it has three inlet channels (4,4') which are evenly distributed on the perimeter.
39. The seat as claimed in claim 22 or 33 or 34 or 35 characterised in that it has one inlet channel (4,4').
40. The seat as claimed in claim 22 characterised in that the air inlet channels (4,4') have equal diameters which are smaller than the diameter of the chamber (2).
PCT/PL2007/000055 2006-08-13 2007-08-07 Injection sprayer and injection sprayer seat WO2008020773A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL380415A PL213652B1 (en) 2006-08-13 2006-08-13 Injector sprinkler system as well as injector sprinkler system socket
PLP380415 2006-08-13

Publications (1)

Publication Number Publication Date
WO2008020773A1 true WO2008020773A1 (en) 2008-02-21

Family

ID=38657825

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2007/000055 WO2008020773A1 (en) 2006-08-13 2007-08-07 Injection sprayer and injection sprayer seat

Country Status (2)

Country Link
PL (1) PL213652B1 (en)
WO (1) WO2008020773A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102031969B (en) * 2009-09-30 2012-09-05 华岁喜 Ultrasonic impulse dust collector of development machine
WO2011144194A3 (en) * 2010-05-20 2012-11-08 Dh Mining System Gmbh Nozzle for a water-mist sprayer
CN103261063A (en) * 2010-12-24 2013-08-21 翁令司工业股份有限公司 Upward flow forming element and noncontact transfer device using the upward flow forming element
DE202016105572U1 (en) 2016-10-06 2018-01-09 Stefan Widhalm Device for binding dust
CN109779628A (en) * 2019-03-20 2019-05-21 开滦（集团）有限责任公司电信分公司 Coalcutter external high-pressure fog automatic dustfall device
US11285501B2 (en) 2016-10-06 2022-03-29 Stefan Widhalm Device and method for binding dust

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2951011A1 (en) * 1979-12-19 1981-06-25 Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Mine cutter roller high pressure liquid spraying nozzle - has spring loading needle in widened hole, linked to sliding piston
DE19752245A1 (en) * 1997-11-26 1999-06-02 Webasto Thermosysteme Gmbh Twin substance nozzle for atomized spray
DE10115553A1 (en) * 2001-03-28 2002-10-17 Rag Ag Water jet, for underground mining and tunneling, has a core jet stream with a high droplet density, surrounded by sprays of different densities to give a targeted point delivery with additional spraying
US20040124269A1 (en) * 2001-03-22 2004-07-01 Dushkin Andrey L Liquid sprayers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2951011A1 (en) * 1979-12-19 1981-06-25 Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Mine cutter roller high pressure liquid spraying nozzle - has spring loading needle in widened hole, linked to sliding piston
DE19752245A1 (en) * 1997-11-26 1999-06-02 Webasto Thermosysteme Gmbh Twin substance nozzle for atomized spray
US20040124269A1 (en) * 2001-03-22 2004-07-01 Dushkin Andrey L Liquid sprayers
DE10115553A1 (en) * 2001-03-28 2002-10-17 Rag Ag Water jet, for underground mining and tunneling, has a core jet stream with a high droplet density, surrounded by sprays of different densities to give a targeted point delivery with additional spraying

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102031969B (en) * 2009-09-30 2012-09-05 华岁喜 Ultrasonic impulse dust collector of development machine
WO2011144194A3 (en) * 2010-05-20 2012-11-08 Dh Mining System Gmbh Nozzle for a water-mist sprayer
CN103261063A (en) * 2010-12-24 2013-08-21 翁令司工业股份有限公司 Upward flow forming element and noncontact transfer device using the upward flow forming element
DE202016105572U1 (en) 2016-10-06 2018-01-09 Stefan Widhalm Device for binding dust
DE202016105569U1 (en) 2016-10-06 2018-01-09 Stefan Widhalm Device for binding dust
DE202016105570U1 (en) 2016-10-06 2018-01-09 Stefan Widhalm Device for binding dust
US11285501B2 (en) 2016-10-06 2022-03-29 Stefan Widhalm Device and method for binding dust
EP4019154A1 (en) 2016-10-06 2022-06-29 Stefan Widhalm Device and method for binding dust
CN109779628A (en) * 2019-03-20 2019-05-21 开滦（集团）有限责任公司电信分公司 Coalcutter external high-pressure fog automatic dustfall device
CN109779628B (en) * 2019-03-20 2023-08-29 开滦（集团）有限责任公司电信分公司 External high-pressure spraying automatic dust settling device of coal mining machine

Also Published As

Publication number Publication date
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PL213652B1 (en) 2013-04-30

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