TW201233450A - Spray gun and portable mist-generating apparatus - Google Patents

Abstract

A spray gun (3) is provided, which comprises an twin fluid atomising nozzle (50) which atomises a process fluid by interaction with a driving fluid. The nozzle (50) including a driving fluid passage having a driving fluid inlet, a driving fluid outlet, and a throat portion intermediate the driving fluid inlet and driving fluid outlet. The throat portion has a cross sectional area which is less than that of both the driving fluid inlet and the driving fluid outlet. The nozzle (50) also includes a process fluid outlet located at, or downstream of, the driving fluid throat. The spray gun (3) further comprises a flow adjustment device (70) connectable to supplies of the driving and process fluids. The flow adjustment device (70) is adapted to selectively vary the ratio of process fluid to driving fluid supplied to the nozzle (50). A mist-generating apparatus incorporating this spray gun (3) is also provided.

Description

201233450 VI. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to the field of spray generation. Furthermore, a spray gun knife/body is provided, and the present invention is further provided with a spray type. Material Grab Device = Rapid deployment and operation in purification, disinfection and fire suppression applications in buildings and other urban environments. [Prior Art]: The portable spray generating device is known. Such devices typically take the form of a vest 1 = backpack on the back and a squirt or spout that is in the hands of the operator and fluidly connected to the backpack for injecting the contents of the back t Out. These known devices rely on collapsing gas to force the liquid stored in the backpack in the π to the spray nozzle, so that the small straight k nozzle atomizes the liquid as it exits the gun. The compressed gas can be stored in a separate package in the bag: or it can be stored under pressure in a container containing the liquid. Since such devices rely on mechanical atomization through the nozzles, the resulting spray is composed of relatively large droplets. Thus, the droplets land relatively quickly to the ground' thereby limiting the utility of the device' unless the device is in close proximity to a fire, infection or zone where the dye is located. Of course, this situation puts the operator of the operating device at greater risk. In addition, the larger the droplet size, the less likely the droplet will resist gravity when dropped onto a surface that is not horizontal. Especially in the disinfection and purification of the liquid droplets can not cover non-horizontal and / or non-visible surfaces (for example, vertical surface, below the horizontal surface) can limit the effectiveness of disinfection or purification operations

S 4 201233450 For the above question is s > ^ ± The solution has used dual fluid atomization to achieve a smaller droplet size. The existing dual fluid atomization 5| is a fixed production of ancient fluids, "I have benefits for two fla, 丨L animation rate, which means that there are two types of nozzles that cannot be adjusted. The ratio between the steam and the steam. The μ_ weeping corner is formed in the net. This means that any device using this device can be used in a library, and it can be used in a library. : The high flow rate for fire extinguishing) is not particularly suitable for a sprayer having a different nature, and the like. The present invention is directed to eliminating or alleviating the aforementioned disadvantages. [Invention] According to the present invention - the first state The invention provides a spray blasting machine comprising: an S-atomizing nozzle including a driving fluid passage, the driving fluid passage having a driving fluid inlet, a driving fluid outlet, and a driving fluid inlet and a driving fluid outlet a throat portion intermediate the σ, the throat portion having a cross-sectional area ′ that is smaller than a cross-sectional area of both the drive fluid inlet and the drive fluid outlet, and the first nozzle further includes a portion located at the drive fluid throat Or downstream processing a body outlet; and a flow regulating device connectable to the source of the drive fluid and the source of the process fluid and adapted to selectively vary the ratio of process fluid to drive fluid supplied to the first nozzle. The device can include a set of drive fluid jets upstream of the drive fluid passage and a set of process fluid jets upstream of the process fluid outlet, wherein the female spout has a different diameter and can selectively The nozzle is fluidly connected to change the flow rate of the respective drive fluid and the treatment fluid to the first nozzle. 201233450 The spray may further include a volume and wherein the flow regulator is opposite to the fluid orifice to be driven And a sealing member that engages each of the driving fluid and the processing fluid nozzle face, thereby accommodating other nozzles in the other group. The blasting may further include pivotingly connecting the hair member to the distal end and the distal portion of the grip portion At the end, wherein the actuating to control the drive fluid and the squirting may further comprise a drive fluid supply hose of the quantity adjuster The hoses traverse the grip portion to block the operator's hand. The first nozzle may include at least one drive fluid bypass passage having a bypass inlet at the body inlet and a fluid source communication therethrough The spray can further include a flow regulator that selectively diverts a nozzle there to the second nozzle. A narrow extension channel. According to a second aspect of the present invention, it comprises: The nozzle of the flow regulating device is rotatably selected to select the nozzles. The nozzle can be hydraulically isolated from one of the nozzles, and each of the nozzles has a distal grip portion thereof. Or a plurality of control valves are received by the grip control valve to selectively fluidize the flow to the grab by the trigger. One or more control valves are coupled to the flow and process fluid supply hose, wherein the operator holds the Driving the fluid to bypass the channel when the portion is gripped, the at least the throat being upstream connected to the upstream of the driving fluid outlet and the processing two compressed air foam nozzle, and the conditioning fluid and the driving fluid are far away The second nozzle may include a downstream of the 'providing a spray generating device, 201233450 a portable frame having a driving fluid tank attached thereto and a processing fluid tank; and according to the present invention One of the first aspects of the rifle, wherein the flow regulator is in fluid communication with the helium drive fluid tank and the process fluid tank. The °H device can include an inhalable air canister and a breathing device. The 11H device may further comprise: a drive fluid supply line connecting the drive fluid tank and the flow meter; °° a regulator located on the drive fluid supply line and adapted to reduce the flow regulator upstream a pressure of the drive fluid; and a manifold on the drive fluid supply line downstream of the regulator, the manifold being adapted to selectively divert drive fluid into the process fluid tank for use in the process fluid tank The treatment fluid is pressurized. The apparatus may further include a flow restrictor intermediate the regulator and the flow regulator, the limiter comprising an elongated body having a bore, the straight bore of the S-hole being substantially constant and smaller than the drive fluid The diameter of the supply line. The frame can form part of a backpack to be carried by an operator. Alternatively, the frame may form part of a trailer that can be towed by a carrier. [Embodiment] A preferred embodiment of the present invention will now be described by way of example only with reference to the accompanying drawings. Figure 1 is a schematic representation of a preferred assembly of a portable spray-generating device 201233450 constructed in accordance with the present invention. The 兮 μ device comprises a process fluid tank 1 containing a large amount of process fluid to be injected by means of a charge. The treatment fluid tank is in fluid communication via the first supply line 5, the blood, or the nozzle 3. The apparatus further includes a drive fluid tank 7 containing a plurality of drive fluids that act as a spray drive. The drive fluid tank 7 can be in physical communication with the regulator 9 via the second supply line 11. The regulator 9 reduces the pressure β β & s 12 for the drive fluid for downstream applications, which may also be located in the second supply line 11 downstream of the regulator 9. The manifold]0~ is in fluid communication with the process fluid tank 1 and can drive the drive fluid from the second supply line U to the process fluid tank 1 via the steering line 10 to enlarge and/or maintain the treatment fluid tank 1 pressure. The manifold 12 is also in fluid communication with the spray 3 by the first supply line 13. The third supply line 13 can be equipped with: a regulator, a flow control valve or a limiter 15 for the body A before the drive reaches the squib 3 . < further reduces the pressure of the driving fluid. The optimum size 1 5 contains -1 且 and the μ 本体 body 'the diameter of the hole is substantially odd. It is smaller than the diameter of the second supply line 13. =, the rupture may also include a separate source of breathable air for use by the operator during operation. The source of air comprises - an inhalable space (4) 7 in fluid communication with a conventional beer suction device 19. The air # is between the air tank 17 and the breathing apparatus 19 to adjust the air flow to the beer. Tank 1 '7, 1 7 for the valve (not shown), when the # valve is opened, the basin is in the middle of the house. The remaining components of the body flowing from the canister to the device are shown in Figures 2 to 5 in an example of a spray gun 3 according to the invention and suitable for use with a frost generating spread. 201233450 ϋ Μ 3〇 The handle or grip portion 32 that protrudes rearward. The hand guard i can be provided to protect the operator's hand when gripping the handle 32. In the particular example illustrated, the hand guard includes the underside of the handle 32 For the reinforced fluid supply softeners 36, 38. The shield may also include a guard member 34 attached adjacent the proximal end of the handle μ to the underside of the spray head 30. The fluid supply hose is %, % first The end is connected to the spray head 3, and the second end of the hose 36, 38 is connected to - or a plurality of control valves 4 () attached to the distal end of the handle 32. The handle 32 has a pivotable trigger 33 The pivotable trigger 33 is pivoted about a pivot point 35 adjacent the distal end of the handle 32 upon actuation and actuates the control valve 4A such that the drive fluid and process fluid can enter the nozzle tip %. 30 includes a first dual fluid atomizing nozzle 5〇, and may further comprise a second compressed air foam (CAF) Nozzle 6 〇. Nozzles 5〇, (9) are located in a flow regulating device in the form of a fluid core 70, as will be explained in more detail below, the fluid core 70 is housed within the showerhead 3 and can be positioned relative to the showerhead 3 Rotating about the longitudinal axis L to switch the squirt between different modes of operation " the fluid core 70 is at least partially located within the selector sleeve 42 and non-rotatably coupled to the selector sleeve 42 such that the selector sleeve 42 The rotation causes the fluid core 70 to rotate relative to the showerhead 30. The locating pin or ball 44 is biased from the rear of the showerhead 30 to the plurality of locating recesses 48 on the adjacent ends of the fluid core 7〇 by the biasing member 46. In one case, since the fluid core 7 turns relative to the mouth 3', the positioning ball 44 will resist the force of the biasing member 46 and be pushed from its 1J recess and then enter the core 7 In the recess. In this manner, the core 70 can be selectively secured in a plurality of positions corresponding to different modes of operation. 201233450 The nozzle 30 is shown in exploded form in Figure 6. 30 includes a housing 80 with the fluid core 70 rotatably assembled The outer casing 80 is composed of three components: a front fluid outer casing 8 2, a rear fluid outer casing 84 and a filter outer casing 86. Each of the outer casing members is formed such that it can be assembled into a A single housing 80 is secured together by a plurality of mounting bolts 88 that extend through a corresponding number of assembly apertures 90 formed in the components. Filter housing 86 includes a connectable to drive a drive fluid supply passage 92 and a treatment fluid supply passage 94 for the fluid source and the treatment fluid source, and a pair of filters 916, 980' are located in the transition vessel orifice (not shown) And biased into the supply channels 92, 94 by respective passer springs 1 〇〇, 1 〇 2 . The sealing collars 1 〇 4 on top of each of the filters 96, 98 together with the filters 96, 98 in place ensure that fluid does not leak from the passages 92, 94. A drive fluid recess and a treatment fluid recess (not shown) are on the back side of the rear fluid housing 84. The drive fluid recess and the process fluid recess form a drive fluid chamber and process when the housing components are assembled together Fluid chambers are in fluid communication with respective drive fluid supply passages 92 and process fluid supply passages 94. Each recess has a serpentine ring seal 1〇8 that is compressed between the interposer housing 86 and the rear fluid housing 84 when the components are secured thereto. The fluid free can be leaked from the chamber adjacent the filter housing 86 and the filter housing 86. Drive fluid channel 11 and process fluid channel 112 are located on opposite sides of rear fluid housing 84, which respectively drive fluid chamber and process fluid chamber fluid

S 10 201233450 Connected. The access opening 114 is disposed on either side of the rear fluid housing 84 such that the inner portion of the rear fluid housing 84 can be more easily machined and allows access to the tunnels 110, 112 for maintenance purposes. In use, each access port 114 is sealed by a removable seal plug 116. As can be seen, the fluid core 70 is located within the central aperture 118 in the front fluid housing 84 and the rear fluid housing 86. The fluid core 70' will be described in more detail below but the first dual fluid atomizing nozzle 50 and the second compressed air foam (CAF) nozzle 60 are visible in FIG. The first nozzle 50 and the second nozzle 6 are accommodated in the nozzle chambers at respective first ends 71 and second ends 73 of the fluid core 70. The CAF nozzle 60 has a substantially cylindrical body 62 having two sets of circumferentially spaced drive fluid orifices 64 and process fluid orifices 6 through which respective fluids enter the nozzles 60. Within body 62, a plurality of perforated disks 68 are downstream of orifices 64, 66 through which fluid must pass before exiting nozzle 6 . The front fluid housing 82 includes a pair of circumferential channels 12, 122. During assembly, the front fluid housing 82 is secured to the rear fluid housing 84 above the fluid core 7〇, and then a pair of guide pins 124, 126 are inserted into the channels i2, 122 and the pair of guide pins 124, 126 Fastened in a corresponding threaded bore 128 on the exterior of the fluid core 7〇. In this way, the relative movement between the outer casing 8〇 and the fluid core 7〇 is not possible in the axial direction but is possible in the direction of rotation. The guide grooves 120, 122 have a predetermined length to limit the relative rotational movement to the rotational movement necessary to cover only the various adjustment positions of the spray head 30. 11 201233450 . . . and the final step of loading the nozzle 3 is to place the adjuster sleeve * 2 over the end of the front fluid housing 82 such that the end of the sleeve 42 is positioned with the orifice 1 3 0 13 2 and the fluid The respective apertures 134, 136 in the first end 7 of the core 70 are aligned. A mechanical fastener 138 is located in the aperture to non-rotatably secure the sleeve 42 to the fluid core 7''. Thus, rotation of the sleeve 42 will cause the fluid core 70 to rotate relative to the outer casing 8〇. The reference indicator 140 is disposed on the exterior of the front fluid housing 82 and the mode indicator 142 is disposed on the exterior of the sleeve 42. These indicators 140, 142 cooperate to indicate the relative rotational position of the fluid core 70 within the outer casing 80 and thus indicate the current mode of operation of the showerhead 3. The fluid core 7〇 is shown in more detail in Figures 7-15. Referring initially to Figures 7 through 9, the core 70 includes an upstream section 74 and a downstream section 75. The upstream section 74 contains two sets of drive fluid ports 丨6〇 and process fluid ports 162 that are axially spaced from one another on the exterior of the upstream section 74. Each of the spouts 160, 162 has a different diameter such that the fluid flow rates through each of the spouts 160' 162 will differ from each other. In the illustrated embodiment, there are three drive fluid spouts 1 60a through 160c and three treatments. Fluid orifices 162a through 162c. Referring to Figures 8 and 9, each of the respective sets 160, 162 is circumferentially spaced from the other spouts of the set, with each of the sets having a predetermined angle of rotation therebetween. In the illustrated example, each spout is at 22.5 with respect to an adjacent spout in its group. . The two sets of spouts 160, 162 are also completely opposite on core 70 such that respective spouts (e.g., '160b, 1 62b) in each set will be in fluid communication with their respective tunnels 110, 112 in rear fluid housing 84.

S 201233450 Two sets of spouts 160, 162 are visible in the cross-sectional views of Figures 8 and 9. Figure 8 shows three drive fluid orifices 1 60a through 1 60c. The first drive fluid orifice 1 60a has a maximum diameter, and the second drive fluid orifice 丨6〇b has a smaller diameter than the first orifice 160a. The diameter of the third drive fluid orifice 16c is smaller than the diameter of both the first orifice 160a and the second orifice 160b. As explained in more detail below, 'the first drive fluid port 16a and the second drive fluid port i6〇b are used for high flow mode (eg, fire suppression) and low flow mode (eg, purge) for squirting, and third The drive fluid orifice 160c is used in a foaming mode. The first drive fluid orifice 160a and the second drive fluid orifice 16B are in fluid communication with the drive fluid tunnel 1 64, which in turn is in fluid communication with the first drive fluid passage 16 6 (not shown in Figure 8), The first drive fluid channel 166 delivers drive fluid into the dual fluid atomizing nozzle within the core 7〇. The third drive fluid orifice 16〇c is in fluid communication with a second drive fluid passage i68 that delivers drive fluid into the CAF nozzle 60 within the core 7〇. Each of the drive fluid ports i6〇a to i6〇c is surrounded by a 0-ring seal 163 that seals against the wall of the central bore 118 in the rear fluid housing 84. These seals 163 allow the various modes of operation of the spout and thus the squirt to be hydraulically isolated from each other. Figure 9 shows the process fluid orifices 162a through 162c, and as with the drive fluid orifice 160, the first process fluid orifice 162a has a maximum diameter and the second treatment fluid orifice 162b has a smaller diameter than the first orifice 162a. However, the diameter of the third treatment fluid orifice 162c is smaller than the diameter of the first orifice 162 & but greater than the diameter of the second orifice 162b. Like the drive fluid port i6, the first process fluid port 162a and the second process fluid port 162b 13 201233450 are used for high flow mode (eg, fire suppression) and low flow mode (eg 'purification') and third. The treatment fluid spout 162c is used in a foaming mode. The first process fluid port 162a and the second process fluid port 62b are in fluid communication with the process fluid tunnel 170, which in turn is in fluid communication with a first process fluid channel 172 (not shown in FIG. 9). The first treatment fluid channel 172 delivers the treatment fluid into the dual fluid atomization nozzle 5〇 within the core 7〇. The second process fluid port 1 62c is in fluid communication with a second process fluid channel 1 74 that delivers process fluid to the CAF nozzle 60 within the core 7〇. As with the drive fluid orifices 16a through 16a, each of the process fluid orifices 162a through 162c is surrounded by a serpentine ring seal 163 that abuts against the center of the rear fluid enclosure 84. The walls of the apertures 118 are sealed to hydraulically isolate each mode of operation of the squib. FIG. 10 is a view of the first end 71 of the fluid core 70. Figure 1 shows the first nozzle outlet 59 of the first dual fluid nozzle 5 and the second nozzle outlet 69 of the second nozzle 60. The apertures 134, 136 by which the sleeve 42 is non-rotatably attached to the core 7 are also visible. The first treatment fluid channel 172 is also visible in Figure 10 due to its opening at the first end 71 of the core 70. However, it should be understood that referring back to FIG. 6, the first end 71 of the core 70 is adjacent to the back of the front fluid housing 82 (not shown) so that when all components are assembled, the first processing Fluid channel 1 72 is blocked by front fluid housing 82. 50 and Figure 11 show a longitudinal section through the fluid core, 70. Show the first nozzle, the second nozzle 60, but it should be noted that the description has been omitted for clarity.

S 14 201233450 Two nozzles 6 〇 meat are a & ° 卩, and pieces. The first nozzle 50 will be described in detail below, but at Θ@+, the outlet 69 of the second nozzle 6 is at the narrow expansion passage 67, and the elongated expansion passage 67 is long from the second nozzle 6 along the core 7〇. Another big extension. 12 and 13 show that the first nozzle 5, the first nozzle expansion channel 67, the first and the first & the first body channel 1 72 are adjacent to the last % 71 of the core 70. The relative position at the point. b. The first nozzle 50 can be seen in more detail in the longitudinal cross-sectional views of Figures 14 and 15 as described above, the first process fluid channel i72 transfers the process fluid from the process fluid tunnel 17 to the nozzle 5 (), and The first drive fluid passage 166 transfers the drive fluid from the drive fluid tunnel 164 to the nozzle. The nozzle 5 〇 itself has a central passage 182 having an inlet 184 in fluid communication with the first drive fluid passage 166. The central passage Η] also has an outlet 188 and a throat portion 186 intermediate the inlet 184 and the outlet 188. The throat portion 186 has a cross-sectional area that is smaller than the cross-sectional area of both the inlet 184 and the outlet 188. The treatment fluid outlet 190 circumscribes at least a portion of the central passage 182 and leads to the central passage 182 at or downstream of the throat portion 186. The process fluid outlet 190 is connected to the first process fluid channel 172 via an annular chamber 192 that surrounds a portion of the central passage 182. As shown in the illustrated embodiment, the process fluid outlet i9 can be adapted such that the process fluid is introduced into the central passage 182 in a direction opposite to the direction in which the drive fluid flows through the central passage bore 82. Additionally, the first nozzle 50 can include one or more drive fluids to bypass the channel! 83, wherein each of the bypass channels 1 83 has an outlet 187 in the annular chamber 192 and the process stream connected upstream of the central passage throat 丨 86 to the middle 15 201233450. In this manner, the process fluid channel introduced between the inlet 185 and the body outlet 190 prior to the introduction of the nozzle 5 〇 before entering the nozzle 5 can generate a small portion of the drive fluid in the process fluid. 'Therefore, the atomization is completely atomized in the part of the nozzle body. Fig. 16 to Fig. 18 illustrate a side example of the present invention by a person skilled in the art. The supply components of the system are assembled in the white backpack 200 on the back of the operator. The backpack 200 has been omitted from Fig. 17 for illustrative purposes, but as shown in Fig. 16, the backpack 2 includes a pivoting frame 202, a pair of shoulders 204, and a waistband 2〇6. . One end of each shoulder strap is attached to the upper portion of frame 202 and each end w of each of the shoulder straps is attached to the respective end of waistband 206. A two-piece snap-fit buckle is provided to secure the backpack 200 to the operator, either end of the frame 202 including one or more pads 210 that are cushioned to a degree on the operator's back. One of the pieces is attached to the belt 206 back cushion 2 1 〇, which provides the operator with a reference to FIG. 1 and FIG. 16 to FIG. 18, the treatment fluid tank i, the drive fluid tank 7 and (when present) The respirable air canister 17 is removably attached to the backpack frame 2〇2 and supported by the backpack frame 202. The cans 1, cans 7 'cans 17 may all be attached to the frame 202 in the upper right position, or as illustrated, the cans, cans 7, and cans 17 may all be inverted with their respective supply lines to raise inside the frame 2 . In this preferred embodiment, each of the process fluid tank 1 and the drive fluid tank 7 has a capacity of 6 liters. The squirt 3 is removably attached to the shoulder strap 2〇4, and the breathing device 19 (not shown in Fig. 1) is removably attached to the shoulder

S 16 201233450 The other of the belts 204 allows the operator to free both hands when the device is not in use. Figures 16 through 18 also show various supply lines and associated components that are schematically illustrated in Figure i. Handle fluid tanks! The processing fluid is supplied to the grab 3 via the first supply line 5. The drive fluid tank 7 supplies the drive fluid to the spray by the second supply line n, the regulator 9, and the third supply line 13. As previously described, the regulator 9 can be in fluid communication with the process fluid tank, *contacting the main tank 1 and driving the fluid from the second supply via the steering line I I & amp amp amp amp amp 11 is selectively diverted to the process fluid tank 1 to increase and/or maintain the pressure in the process fluid tank i. 19 and 20 illustrate an alternative embodiment of the present invention that will be towed behind the carrier, preferably a locomotive to allow the device to quickly reach a desired location and not be obstructed by the busy traffic in the city location. As shown in the figures, the skirt can also be manipulated by hand in a cart. The apparatus includes a frame 260 having a drawbar at one end thereof and a wheel fitting portion 264 at the end of the frame opposite the drawbar 262. Traction: The free end 263 is provided with at least one handle for attaching the drawbar to the carrier and also for allowing the operator to manipulate the device by hand. At least the wheel 266 is rotatably supported on the wheel fitting portion (10). The body is mounted on the frame 260, and the supply components of the system are attached to the body coffee. 7叮2图^Fig. 19 and Fig. 2' The treatment fluid tank 1 and the drive fluid tank tank i are present in two sets of tanks 7, but only in the treatment flow in each group can be seen in the west and Fig. 2〇. - detachably attached to the body (10) adjacent to the frame 260. The splicing portion 264 is detachably attached to the body (10). Each squirting 3 is borrowed 17 201233450 is connected to its respective group by a supply line wound on the rotating reel 270 The fluid tank 1 and the driving fluid tank 7 are rotatably supported by the body a". In the case of two sets of cans 1, 7 and a pair of sprays 3, the device allows two operators to work simultaneously. However, the device may only include a group of cans 7 and a single spray 3, or a plurality of cans; and each spray 3. Initially, the treatment fluid tank 1 will, for example, describe the manner in which the spray blasting device operates and the drive fluid tank 7 filled with its respective fluid can be water, liquid scavenger or liquid fire extinguishing agent' and can be pressurized Inside the can. For example, the 'drive fluid can be a gas such as compressed air, carbon dioxide or nitrogen, and held at its respective tank 7 at a relatively high pressure (eg, 300 bar gauge) [in the presence, regulator 9 and Manifold 12 allows the drive fluid to perform two functions. First, the regulator 9 reduces the pressure of the drive fluid to a much lower pressure (e.g., η bar gauge), and the manifold 12 can then conduct the lower pressure (iv) fluid to the process fluid tank as needed. I pressurizes the treatment fluid and forces the treatment fluid to flow from its tank i to the spray 3 along the supply line 5. Secondly, as will be explained in more detail below, the driving fluid that is not guided to the treatment fluid ¥i with or without the manifold 12 months is directly fed into the squirt 3 via the supply line 13, wherein the mouth gun 3 makes Spraying 3 of the treatment fluid atomization. The restrictor 15 is preferably disposed in the supply line 13 to reduce the drive fluid pressure to a lower pressure (e.g., 8.5 bar gauge) before the drive fluid enters the spray. In the case where the cans 1, 7 are connected via their respective supply lines 5, u, 13 to the shut-off valves of the spray guns 1 , 7 , the treatment fluid and the drive fluid will

S 18 201233450 Grab the 3 flow toward the mouth. In particular, referring to Figures 2 to 5, the trigger 33 and the control valve 40 are initially in their closed position so that no fluid can flow to the grab 3 in this manner, the system is pre-prepared and ready for use, but will The spray is not started until the trigger 33 is squeezed and pivoted about the pivot pin 35 to more actuate the control valve 40. The process fluid and drive fluid may then flow through 3 6 3 8 to enter their respective drive fluid supply passages 92 and process fluid supply passages 94 at the nozzles 3 . As the fluid flows into the fluid supply passages 92, 94, the fluid will also flow through the optional filters 96, 98 and from the filters 96, 98 into their respective tunnels 110, 112. As explained above, the fluid core 7 has three drive fluid ports 160a to 160c and three process fluid ports 16Sa to 162. The rotational position of the fluid core 70 determines which of the spouts 160, 162 are in fluid communication with the tunnels 110, 112 and thus determines which mode the snooping system is in. Typically, the ram 44 will initially be in a first high flow setting, wherein the ratio of the process fluid to the drive fluid at the atomizing nozzle 80 is substantially 8. j. That is, the flow rate of the treatment fluid is 8 kg/min for every 1 kg/min of driving fluid. In this non-limiting example, as the process fluid and drive fluid enter a nozzle that is in a straightforward setting, the pressure of the process fluid will be about 11 bar gauge and the pressure of the drive fluid will be 8.5 bar gauge. Adjusting the showerhead 44 to the second low flow setting reduces the aforementioned ratio of process fluid to drive fluid to substantially 2·1. That is, the flow rate of the treatment fluid is 2 kg/min for every 1 kg/min of driving fluid. In a low flow mode with a 2:1 flow ratio, the smaller diameter orifices 160b, 162b create the desired flow restriction within the fluid core 70 to reduce the pressure of the two fluids by 19 201233450 to as small as 4.2 bar gauge. In some applications, the low flow mode reduces the aforementioned flow ratio to 1:1', i.e., for a drive fluid of 丨kg/min, the flow rate of the treatment fluid is 1 kg/min. The showerhead 44 can include one or more intermediate settings that produce a respective intermediate flow ratio between low flow and high flow. When the fluid core 70 is at a low flow setting or a high flow setting, the drive fluid and process fluid reach the first nozzle 50 via their respective supply passages 66, 72. Since the throat portion 186 of the central passage 182 has a cross-sectional area that is smaller than the cross-sectional area of both the inlet 184 and the outlet 188 of the passage, the pressurized drive fluid entering the throat 186 undergoes significant acceleration. At the same time, the thinner process fluid annulus enters channel 1 82 at or downstream of the throat 1 8 6 via the treatment fluid outlet 1 9 . As the accelerated drive fluid collides with the process fluid annulus, the accelerated drive fluid applies a shear force to the process fluid. The drive fluid can also undergo expansion downstream of the throat 186, thereby creating a turbulent zone in the passage 182 that causes further atomization of the process fluid. The rate difference, temperature difference, and pressure differential between the drive fluid and the process fluid in the nozzle 5〇 can also result in momentum transfer from the high rate drive fluid to the lower rate process fluid. This combination of shear, turbulence, and momentum transfer atomizes the process fluid and creates a dispersed phase of process fluid droplets in the drive fluid of the continuous gas phase below the throat of the nozzle. This machine works as a spray plume for the treatment of fluid droplets from the nozzle outlet [Μ. In the test, 90% of the volume of juice contained in the spray produced by the first nozzle at a low flow setting (1:1 flow ratio between the treatment fluid and the drive fluid) was measured to be less than 1〇〇. (ie, =丄〇〇μιη). In the same setting, the spray is measured in frequency. The droplets were measured to be less than 5 μηι (i.e., Dn9〇 = 5 μιη). When treating fluids and driving fluids

S 20 201233450 141 ·3 μηι, and when the low flow ratio of Dn90 is increased to 2:1, Dv90 is increased to 8.5 μηα. At the first high flow setting (center 1 flow ratio between treatment fluid and drive fluid) +, 9% by volume of the generated spray is measured to be less than 280 μηι (ie, Dv9〇= 28 〇μπ〇, and 90% of the droplets by frequency are measured to be less than 148 μ〇ι (that is, μη〇. In the test, the MaWernSprayTec device was used for 30 seconds continuous injection at a point 4.7 m from the nozzle exit. The result is obtained by sampling at i Hz during the cycle. The treatment fluid is water and the drive fluid is compressed air. The ratio of water pressure to air pressure at the nozzle is large & amp in the _ setting and 1.4:1 in the second setting. When the spray is to be used in CAF mode, the treatment fluid tank containing the aqueous film forming beads (afff) is attached to the frame of the backpack or trailer and connected to the grab 3 via the supply line 5. The fluid core 7 turns and then rotates to the caf In the position, wherein the spouts 160c, 162c connect their respective tunnels 11, 112 with the drive fluid orifice 64 of the CAF nozzle (9) and the process fluid orifice 66. Once the trigger 33 is operated and the control valve 40 is opened 'fluids flow to the CAF In the nozzle 60, the AFFF fluid is then generated. Driving a mixture of bubbles of fluid bubbles. The resulting foaming mixture then expands as the mixture travels along the expansion channel 67 before being ejected from the outlet. Due to the first dual fluid atomizing nozzle, the spray gun and device are capable of producing Spraying a very small droplet and causing the spray to eject a substantial distance. Example 1 due to the combination of shearing, knifeing, and turbulent transfer between the fluid and the treatment fluid at a high rate, ϋ is generated by the atomizing nozzle The droplets are smaller than the droplets that can be produced by conventional portable spray/spraying, and are therefore capable of adhering to the surface of the solid vertical surface and the invisible surface such as the underside of the table and chair. By providing a ratio of process fluid to drive fluid that can be adjusted to change into the first nozzle and/or cutting from the helium heavy fluid atomizing nozzle to the condensed air bubble; The operator does not need to carry additional components to cover all eventual events to handle the accident in the most efficient manner. For example, a 1:1 or 2:1 ratio setting is preferred for purification and hot pressing operations. 'And the 8:1 ratio setting is preferred for direct resolution of, for example, a fired seat, while the CAF nozzle is used where a foam fire extinguishing agent is required. The implementer can simply rotate the selector at the spray head. The sleeve adjusts the setting. The portability of the spray generating device of the present invention (whether on the operator's back or by the carrier dragging) makes it suitable for being sent to solve fire, pollution, infection The quick action of the accident of the combination or combination thereof is used by the team of the first dispatcher. The present invention also provides an ergonomically improved spray blast by having the trigger pivot mechanism and the control valve disposed at the rear of the handle. This situation provides a certain degree of opposite torque to the robbed nozzle, which means that it is better balanced in the hands of the operator. The apparatus can further include a compressor adapted to pressurize the drive fluid stored in the drive fluid tank. The canister or trailer frame is removed from the canister for refilling or replacement. Thus, different canisters containing different treatment fluids can be attached depending on the application of the system.

S 22 201233450 For example, the squirting may further include an infrared camera and a fire seat that is assisted to be inserted into a person. The display module can include an electronic control unit with one or more of the functions: a Gps system liquid level monitor and display, a thermometer, and a text-based communication system used when conventional audio communication is not =. ° Although the presence of CAF (4) is preferred, the present invention is not limited to (10) nozzle squirting. The truth is that the spray can only include dual fluid atomizing nozzles that use high flow: low flow mode. (5) The nozzle also provides an alternative nozzle replacement for a particular spray characteristic, the ten alternatives being parallel to the first nozzle. The nozzle that is still snatched by n k is preferably rotatable to adjust the gun mode. An alternative example of the absence of a dual fluid atomizing nozzle can be modified to have a fixed spray head and fluid core and rotatably supported on the nozzle; a flow regulating device in the form of a sleeve. The sleeve has a cylindrical portion that extends axially between the fluid housing and the fluid core. The extension of the sleeve is above and has a collection of drive fluid orifices and process fluid jets σ, and rotation of the sleeve relative to the shell and fluid core will cause the population pores to be associated with the fluid housing and the interior of the fluid core The pathways are selectively connected. This situation provides an alternative way to select the mode of squirting and adjust the flow ratio of the fluid. The fluid tank can contain a primary reservoir and a secondary reservoir, and the secondary reservoir is adapted to selectively sew its contents into the primary reservoir. The whale can may include an actuator to manually introduce the contents of the secondary reservoir into the reservoir. In the case of a dual reservoir processing fluid tank, the device is optionally used for two applications. For example, in the case where the main reservoir is water and the secondary 23 201233450 bead is a concentrated disinfectant or a purified apricot flavoring agent, the device depends on whether the operator chooses to store the agent from the secondary storage. Evil and smuggling are introduced into the main reservoir and can be used to extinguish fires (ie, use only water). In a modification to this specific example, the treatment fluid tank can be adapted such that the agent in the main reservoir is transported from the main reservoir to the processing cylinder from the main reservoir rather than directly introduced to The main storage agent is mixed. The other manifold control device can be included in any of the specific examples to control the introduction of the contents of the secondary reservoir to the treatment fluid. s speed. The secondary receptacle can be located in the casing separated from the main | There may be a plurality of different types of additives in the entire series - recognition +, .W^, purification materials, concentrated solutions or the end of the series). . The hepatic secondary reservoir can be controlled by adjusting/mixing benefits to be mixed individually or in combination with the & main body from the main reservoir to produce different purification solutions for different production risks. The person may select this #different mixed situation based on the information he receives about the nature of the threat from @+α & L, so that .. 玍 is specific to the special dangerous solution or dangerous details Unclear 愔 广 疋 疋 It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It It The drive-to-mixer can be foamed with the drive fluid CAF~, ", money to CAF 4 original" to purify the chemical with the U source. The trailer can further contain lines or hoses. Extra reels, which are deployed behind the trailer and placed outside the scene when the trailer enters the scene of the accident.

S 24 201233450 “Second dispatcher” can be connected to an extra hose with a cold, external source. In this way, additional fluid can be supplied to an operator who is already in a hazardous environment around the site to continue operation and to sculpt the site to replenish the tank. The trailer body can have a stretcher for driving the wounded away from the scene. The spray gun can include a perforating tool attached to the spray head to create a hole in the door and its like, which allows the operator M to be sprayed into the room without entering the space. The invention is not limited to the specific flow ratios mentioned in the description of the preferred embodiments. While such ratios are preferred, the invention can be modified such that other flow ratios are obtained when adjusting the flow rate of the process fluid at the spray head. The invention is also not limited to the particular atomizing nozzle utilized in the preferred embodiment, as it is not necessary that the process fluid outlet be directed to the central nozzle passage. The fact is that the process fluid outlet can be located at any point along the throat of the central passage or downstream of the throat of the central passage. This situation includes an atomizing nozzle having a process fluid outlet to the drive fluid stream downstream of the central passage outlet. By providing a 〇-ring seal around each of the drive fluid vent and the process fluid vent on the fluid core, the spray blast of the present invention can be switched between different modes of operation, but the different modes are hydraulically isolated from each other . Alternatively or in addition to the 0-ring seal, the rear fluid housing may have a pair of spring-loaded plungers that selectively engage the respective drive fluid orifices from each set with the treatment fluid orifices And providing fluid communication between the drive fluid tunnel and the treatment fluid tunnel in the rear fluid enclosure and the passage in the fluid core.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a portable spray generating device; FIG. 2 to FIG. 2 are diagrams suitable for use in a spray generating device. Sweeping side view, perspective view, ^ stop view and longitudinal section view; Fig. 6 is an exploded view of the spray head which is not shown in Fig. 2 to Fig. 5; Fig. 7 is the fluid core of the nozzle of Fig. 6. Figure 8 and Figure 9 are cross-sectional views taken along lines VIII-VIII and ιχ_Ιχ shown in Figure 7; Figure 10 is an end view of the fluid core of Figure 7; Figure 11 is shown along Figure 10 Figure 12 and Figure 13 are cross-sectional views taken along lines χπ χπ and ΧΙΙΙ-ΧΙΙΙ shown in Figure u; Figures 14 and 15 are shown along Figure 12 and Figure 13 is a side view of the portable spray generating device; Figure 17 and Figure 18 are respectively the backpack components of the device shown in Figure 16; Rear view and perspective view; and Figures 19 and 20 respectively show an alternative to the spray generating device intended to be dragged behind the carrier A side view and a front view of a specific example. [Main component symbol description]

S 26

Claims (1)

201233450 VII. Patent application scope: 1 . A spray blast comprising: a first atomizing nozzle including a driving fluid passage having a driving fluid inlet, a driving fluid outlet and a driving fluid inlet a throat portion intermediate the drive fluid outlet 'the throat portion having a cross-sectional area smaller than a cross-sectional area of both the drive fluid inlet and the drive fluid outlet and the first nozzle further includes - located in the drive fluid a treatment fluid outlet at or downstream of the throat; and a flow regulating device 'which is connectable to the source of the drive fluid and the source of the treatment fluid' and adapted to selectively vary the ratio of process fluid to drive fluid supplied to the first nozzle . 2. The spray squirt according to claim 1, wherein the flow regulating device comprises a group of driving fluid nozzles upstream of the driving fluid passage and a group of processing fluid nozzles upstream of the processing fluid outlet, wherein each group Each spout has a different diameter and is selectively in fluid communication with the first nozzle to vary the flow rate of the respective drive fluid and process fluid to the first nozzle. 3. In the case of the squirting of the second item of the patent application, it further comprises a nozzle for accommodating the tempering and squeezing parts, and wherein the flow regulator is rotative with respect to the blasting machine for selecting the desired Drive fluid vents and process fluid vents. 4. The spray blast according to item 3 of the patent application, wherein each of the driving fluid nozzles and the processing fluid is sprayed, surrounded by a sealing member that is joined to the inner surface of the nozzle, thereby hydraulically isolating each - spout with its respective group in its 27 201233450 his spout. 5 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ At the distal end of the grip portion, wherein the controls are selectively used to control the flow of drive fluid and process fluid entering the gun. 6. The spray gun of claim 5, wherein the step further comprises connecting the one or more control valves to the drive fluid supply hose and the process fluid supply hose of the flow regulator, wherein the hoses The grip portion is traversed to block the operator's hand when the operator grips the grip portion. 7 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ a bypass inlet to the drive fluid population and a bypass outlet that is in communication with the source of treatment fluid upstream of the process fluid π. 8. The squirting of any of the patents of the present invention, further comprising a first compressed air foam nozzle, and the flow regulator selectively selectively moving the processing fluid and the driving fluid away from the first The nozzle is turned to the second nozzle. 9. The spray gun of claim 8 wherein the second nozzle includes an elongated expansion passage downstream thereof. 10. A spray generating device comprising: - a portable frame having a spray fluid tank attached to one of the drive fluid tanks and a process fluid tank; and S 28 201233450, the spray gun of any of the first to the ninth aspects of the patent application, wherein The gripper is in fluid communication with the 5H drive fluid tank and the treatment fluid tank. 11·If the device is in the scope of the patent application, it further includes 4 inhalation air tanks and breathing apparatus. 12. See Patent Application No. 15 10 The device of claim 11 further comprising: a driving fluid supply line connecting the driving fluid tank and the flow regulator; a regulator located on the driving fluid supply line and tuned To reduce the pressure of the drive fluid upstream of the flow regulator; and - a manifold located on the drive fluid supply line downstream of the regulator, the manifold being adapted to divert drive fluid into the process fluid tank, Pressurizing the treatment fluid in the treatment fluid tank. 13. The apparatus of claim 12, further comprising - a flow restrictor intermediate the regulator and the flow regulator, the restriction comprising - having a narrow body of the hole, the diameter of the hole being substantially constant = the package is smaller than the diameter of the drive fluid supply line. and 14) as in any one of claims 1 to 13 wherein the frame is formed A package to be used by an operator/> 15. As claimed in paragraphs 10 to 13 of the scope of the patent application, wherein the frame is formed by dragging with a vehicle The part of the item of the trailer. 29