APPARATUS FOR DISPERSING EXPLOSION PREVENTION MIXTURE

Abstract

An apparatus for dispersing liquid flame retardant mixtures mounts in the bucket of mine scoop. The apparatus has a housing which is generally sized to fit within a mine scoop bucket while leaving space in the bucket for moving mine material. The housing has a reservoir within it for holding a fire prevention mixture. The mixture is a liquid mixture and the apparatus has a motor, pump, tubes, and nozzles for dispersing the fire prevention mixture. The apparatus accommodates a hydraulic cylinder for moving the mixture dispersing apparatus back and forth within the scoop bucket. The hydraulic cylinder is operated to position the nozzles for dispersing the liquid. Some embodiments of the apparatus have a front face with scraper blade elements that operate as a scraper blade similar to scraper blades in scoop buckets that do not have the apparatus in place.

Claims

1. An apparatus for dispersing a liquid mixture for dust control in a mine, the apparatus comprising: an ejector blade; a hydraulic cylinder and rod assembly configured to move the ejector blade; a nozzle which is fixed with respect to the ejector blade and directed by moving the ejector blade; and, a hose connected to the nozzle, the hose conducting the liquid mixture to the nozzle.

2. The apparatus of claim 1 positioned in a scoop.

3. The apparatus of claim 1, further comprising: a reservoir for holding a quantity of liquid mixture; and, a pump, the pump supplying the liquid mixture to the nozzle via the hose.

4. The apparatus of claim 3 positioned in a scoop.

5. The apparatus of claim 4, wherein; the hydraulic cylinder and rod assembly and the pump are separately operable by a single person.

6. The apparatus of claim 3, further comprising; a housing, the reservoir and the pump being located within the housing.

7. The apparatus of claim 6, wherein; the housing is fixed to the back of the ejector blade.

8. The apparatus of claim 7, wherein; the nozzle is fixed to the housing.

9. The apparatus of claim 7 positioned in a scoop.

10. The apparatus of claim 9, wherein; the scoop has a back and the hydraulic cylinder and rod assembly is connected to the back of the scoop.

11. An apparatus for dispersing a liquid mixture, said apparatus comprising: an ejector blade assembly comprising a housing and an ejector blade; a reservoir within the housing for holding the liquid mixture; a nozzle mounted externally on the housing; a hose for conducting the liquid mixture from the reservoir to the nozzle; a pump connected to the hose to pump the liquid mixture from the reservoir through the hose to the nozzle; and, a hydraulic cylinder and rod assembly connected to the ejector blade assembly, the hydraulic cylinder and rod assembly controlling the position of the housing.

12. The apparatus of claim 12 positioned in a material scoop having an operator, the pump and the hydraulic cylinder and rod assembly being independently controllable by the operator of the material scoop.

13. An apparatus for dispersing a liquid mixture for dust control in a mine, said apparatus comprising: a housing; a reservoir within the housing for holding the liquid mixture; a nozzle fixed externally on the housing; a hose for conducting the liquid mixture from the reservoir to the nozzle; a pump within the housing connected to the hose to pump the liquid mixture from the reservoir through the hose to the nozzle; and, a hydraulic cylinder and rod assembly connected to the housing and to an object distal from the housing, the hydraulic cylinder and rod assembly controlling the position of the housing to direct the dispersal of the liquid mixture by the nozzle.

14. The apparatus of claim 13 positioned in a material scoop having an operator, the pump and the hydraulic cylinder and rod assembly being independently controllable by the operator of the material scoop.

15. The apparatus of claim 13, further comprising: an ejector blade on the housing.

16. A method of dispersing a liquid, comprising: fixing a nozzle to an ejector blade assembly comprising an ejector blade; connecting a hose to the nozzle; using a hydraulic cylinder and rod assembly to position the ejector blade assembly; supplying the liquid to the nozzle via the hose.

17. The method of claim 16 wherein: the ejector blade assembly further comprises a reservoir to store the fluid and a pump connected to the reservoir and the hose.

18. The method of claim 16, further comprising; carrying the ejector blade assembly in a scoop.

Description

BRIEF DESCRIPTIONS OF THE DRAWINGS

[0011] FIG. 1 is a left front perspective view of an embodiment of the mixture disperser of the present application, positioned at the back of the scoop bucket.

[0012] FIG. 2 is a left front perspective view of an embodiment of the mixture disperser of the present application, positioned at the front of a scoop bucket.

[0013] FIG. 3 is a left front perspective view of the embodiment of the mixture disperser of FIGS. 1 and 2, by itself.

[0014] FIG. 4 is a right front perspective view of the embodiment of the mixture disperser of FIGS. 1 and 2, by itself.

[0015] FIG. 5 is a top view of the embodiment of the mixture disperser of FIGS. 1 and 2.

[0016] FIG. 6 is a front view of the embodiment of the mixture disperser of FIGS. 1 and 2.

[0017] FIG. 7 is a left side view of the embodiment of the mixture disperser of FIGS. 1 and 2.

[0018] FIG. 8 is a right side view of the embodiment of the mixture disperser of FIGS. 1 and 2.

[0019] FIG. 9 is a section view of the embodiment of the mixture disperser of FIGS. 1 and 2 along the section line A-A in FIG. 6.

[0020] FIG. 10 is a back view of the embodiment of the mixture disperser of FIGS. 1 and 2.

[0021] FIG. 11 is a section view of the embodiment of the mixture disperser of FIGS. 1 and 2 along the section line C-C in FIG. 9.

[0022] FIG. 12 is a side perspective view of the embodiment of the mixture disperser of FIGS. 1 and 2.

DETAILED DESCRIPTIONS OF THE EMBODIMENTS

[0023] FIG. 1 is a left front perspective view of an embodiment of the mixture disperser 10 of the present application, positioned at the back of a scoop bucket 100. Bucket 100 is carried on a scoop vehicle (not shown). Mixture disperser 10 comprises housing 11, which is generally sized to fit within bucket 100, and carries the other components of mixture disperser 10. The width of housing 11 approximately matches the interior width of bucket 100. The length of housing 11 is a fraction of the length of bucket 100. This leaves a volume within bucket 100 for use in its usual capacity as a scoop for scooping and carrying mined material, such as coal, or for otherwise carrying material.

[0024] In preexisting scoop buckets, bucket 100 has an ejection blade located at the back of its interior. This blade is mounted to a hydraulic cylinder. When bucket 100 is full of mined material, the hydraulic cylinder is extended to move the ejection blade forward in bucket 100 to push the mined material out of bucket 100, emptying the mined material from bucket 100.

[0025] FIG. 2 is a left front perspective view of an embodiment of mixture disperser 10 of the present application, positioned at the front of a scoop bucket 100. Embodiments of the present invention maintain the ability of bucket 100 to scoop, carry, and discharge mined material while also adding the functionality of dispersing a fire suppressant liquid mixture. With mixture disperser 10 at the front of scoop bucket 100 in FIG. 2, the assembly of hydraulic cylinder 41 and cylinder rod 42 is visible extending from mixture disperser 10, through aperture 102 and to the back of bucket 100 where it is connected to bucket 100. Hydraulic lines 43 carry the hydraulic fluid that extends and retracts cylinder 41, which moves mixture disperser 10 back and forth in bucket 100. Moving mixture disperser 10 back and forth positions mixture disperser 10 for dispersing the fluid mixture where desired.

[0026] In some embodiments of mixture disperser 10, front face 91 of mixture disperser 10 is configured like an ejection blade for optimal material moving function while protecting and preserving mixture disperser 10. Front face 91 may be comprised of a scraper edge 92 and face plate 93. Scraper edge 92 scrapes along bottom surface 101 of bucket 100. Face plate 93 presents a more robust surface to the mined material and protects the rest of mixture disperser 10. FIG. 3 is a left front perspective view of the embodiment of mixture disperser 10 of FIGS. 1 and 2, by itself, while FIG. 4 is a right front perspective view of the embodiment of mixture disperser 10 of FIGS. 1 and 2, by itself. In FIGS. 3 and 4, sides 12 of mixture disperser 10 are clearly visible. Sides 12 have notches 13 which are sized and located to fit over rails 101 in scoop bucket 100 which are visible in FIGS. 1 and 2. Notches 13 and rails 101 keep mixture disperser 10 in bucket scoop 100 when the considerable forces needed to eject mine material from bucket 100 are generated by the hydraulic ram.

[0027] In the embodiments shown in the figures, mixture disperser 10 disperses a liquid mixture which may include a slurry of flame retardant material, such as rock dust, mixed with water. Edge nozzles 30 are fixed at the top rear corners and center nozzle 31 is fixed at the top rear center of mixture disperser 10. Primary tube 37 carries the mixture to center nozzle 31 and secondary tubes 32. Secondary tubes 32 run from primary tube 37 to edge nozzles 30 and supply the liquid mixture to edge nozzles 30. Edge nozzles 30, center nozzle 31, primary tube 37, and secondary tubes 32 are visible in FIGS. 1-6. The system may have as many nozzles as desired and the nozzles may be located to achieve the coverage desired for a given application for the system. Door 14 in top 15 of mixture disperser 10 gives access to reservoir 33 in mixture disperser 10, which allows reservoir 33 to be replenished with the mixture.

[0028] FIGS. 9-11 provide views of internal components of mixture disperser 10. FIG. 9 is a section view of the embodiment of mixture disperser 10 of FIGS. 1 and 2 along the section line A-A in FIG. 6. This view is from above the section. To the left in FIG. 9, motor 34 drives pump 35 which has an intake 36 in communication with reservoir 33 to the right.

[0029] FIG. 10 is a back view of the embodiment of mixture disperser 10 of FIGS. 1 and 2. Being a back view, FIG. 10 is reversed from FIG. 9, so motor 34 and pump 35 are located to the right and visible through a cutout panel in FIG. 10. Primary tube 37 runs from pump 35 to center nozzle 31 and secondary tubes 32. Secondary tubes 32 carry the mixture on to edge nozzles 30. The number and locations of nozzles can vary and may even be changed at the work site in some embodiments. Additionally, a plurality of pumps may also be employed. For example, with multiple pumps, different pumps could supply different sets of nozzles and be controlled separately for different patterns of dispersion.

[0030] To the right in FIG. 9 are located two mixers, or agitators, 38. Mixers 38 keep the fluid mixture in reservoir 33 moving and stirred up to prevent the non-liquid portion of the mixture from settling out. FIG. 11 is a section view of the embodiment of mixture disperser 10 of FIGS. 1 and 2 along the section line C-C in FIG. 9. In FIG. 11, it can be seen that mixers 38 are directed at the bottom of reservoir 33. If the mixture disperser 10 has been out of use long enough for significant settling to occur, mixers 38 can dislodge settle material from the bottom of reservoir 33 and return the material to suspension in the liquid.

[0031] Motor 34 and mixers 38 require power and controls. This is typically provided by the vehicle carrying the scoop bucket 100 and requires a power cord, or cable, to run from the vehicle power source to mixture disperser 10. Returning to FIG. 2, control support arm 20 spans between bucket 100 and housing 11. Control support arm 20 has hinge 21 approximately half away along it length and is pivotally connected at bucket end 22 to bucket 100 and at housing end 23 to housing 11. Power and control cables running from the vehicle to housing 11 are routed through control support arm 20. As housing 11 is moved back and forth, control support arm 20 extends and retracts while supporting the power and control cables and controlling their movements. This prevents, for example, a power cord from falling behind housing 11 as it is moved back to the rear of bucket 100. In addition to FIG. 2, control support arm 20 is visible in FIGS. 1, 3-8, 10, and 12.

[0032] The section view of FIG. 9 shows cylinder 90 passes through housing 11 of mixture disperser 10 and terminates at back panel 16 of housing 11. Cylinder 90 houses a hydraulic cylinder 41 and rod 42 assembly which moves mixture disperser 10 back and forth to position and direct the nozzles for dispersing the liquid mixture. Returning to FIG. 2, cylinder 90 aligns with hydraulic cylinder 41 and rod 42.

[0033] When in use, mixture disperser 10 is mounted in a scoop bucket 100 and can be moved back and forth to allow the scoop bucket to be used as it normally is with only a fractional diminishment of load capability. To disperse the mixture, mixture disperser 10 may be extended out to the front end of the bucket 100. At its front end, bucket 100 tapers toward the ground. Because of this, edge nozzles 30 can achieve a wider spray pattern when mixture disperser 10 is in the forward position. This also moves mixture disperser 10 further up toward the mine face, so that nozzles 30, 31 can direct the liquid mixture at the mine face. In some situations, mixture disperser 10 may disperse material as it is moved within bucket 100 rather than being operated from a fixed position at the front of bucket 100. In those situations, the hydraulic cylinder 41 and rod 42 assembly can be operated to position nozzles 30, 31 anywhere within the range of motion of the hydraulic cylinder 41 and rod 42 assembly to direct nozzles 30, 31 to a desired target area. Embodiments of mixture disperser 10 allow a scoop operator to both move mined material and apply fire control mixtures from the operator station in the scoop.

[0034] FIG. 12 is a side perspective view of the embodiment of the mixture disperser of FIGS. 1 and 2. In FIG. 12, hydraulic cylinder 41 and rod 42 may be seen extending from the back of housing 11. Hydraulic hoses 43 are supported by control support arm 20. At one end, hydraulic hoses 43 connect into the back of housing 11. From there hydraulic fluid is carried to cylinder 41 within housing 11. The other end of hydraulic hoses 43 is not connected and is shown in FIG. 12 laying in scoop bucket 100. In use, scoop bucket 100 would be attached to a vehicle, and the loose ends of hydraulic hose 43 would be attached to the hydraulic system of that vehicle.

[0035] It is to be understood that the embodiments and claims are not limited in application to the details of construction and arrangement of the components set forth in the description and illustrated in the drawings. Rather, the description and the drawings provide examples of the embodiments envisioned, but the claims are not limited to any particular embodiment or a preferred embodiment disclosed and/or identified in the specification. The drawing figures are for illustrative purposes only, and merely provide practical examples of the invention disclosed herein. Therefore, the drawing figures should not be viewed as restricting the scope of the claims to what is depicted.

[0036] The embodiments and claims disclosed herein are further capable of other embodiments and of being practiced and carried out in various ways, including various combinations and sub-combinations of the features described above but that may not have been explicitly disclosed in specific combinations and sub-combinations. Accordingly, those skilled in the art will appreciate that the conception upon which the embodiments and claims are based may be readily utilized as a basis for the design of other structures, methods, and systems. In addition, it is to be understood that the phraseology and terminology employed herein are for the purposes of description and should not be regarded as limiting the claims.