CA1324591C - Apparatus for preparing, classifying, and metering particle media - Google Patents
Apparatus for preparing, classifying, and metering particle mediaInfo
- Publication number
- CA1324591C CA1324591C CA000611137A CA611137A CA1324591C CA 1324591 C CA1324591 C CA 1324591C CA 000611137 A CA000611137 A CA 000611137A CA 611137 A CA611137 A CA 611137A CA 1324591 C CA1324591 C CA 1324591C
- Authority
- CA
- Canada
- Prior art keywords
- particle
- metering
- taking
- particles
- media
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
- B24C7/0053—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C5/00—Working or handling ice
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C5/00—Working or handling ice
- F25C5/02—Apparatus for disintegrating, removing or harvesting ice
- F25C5/04—Apparatus for disintegrating, removing or harvesting ice without the use of saws
- F25C5/046—Ice-crusher machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Disintegrating Or Milling (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
Apparatus for preparing, classifying, and metering particle media useful for various purposes including blast cleaning and treating systems includes an impeller for taking a media input having a working particle size range and sending the media particles along with a fluidizing air input through a scroll, as well as a classifier/surge tank acting as a cyclone separator connected to the fluidized particle/air stream output of the scroll. An eductor nozzle assembly is provided for taking the lighter portions of the particles from the cyclone separator and transporting this to recovery or utilization whilst a metering device takes the heavier portions of the particles from the cyclone separator and transports this to a utilization device or recovery. There is also provided apparatus for taking the lighter or heavier portion of the particles from the cyclone separator in a controlled manner, and for taking the metered particle stream and providing along with a pressurized air input, a fluidized air/particle output in a controlled manner such that the air/particle ratios are controlled and the particles are in a steady or pulsed flow as desired.
Description
BACKGROUND
This invention relates to apparatus for preparing, clas-sifying, and metering particle media useful for various purposes and especially fox particle blast cleaning and treating systems.
.
U.K. Patent ~pplication GB 2,171,624A describes method and apparatus for cleaning by abrasive blastinq. The input particles are fed by gravity into a chaxging chamber which is a cylindrical shell with a rotating bladed rotor therein to carry the particles to an output leading to an auger which drives them in a continuous manner into an entraining air jet stream. Control of the air and particle amounts and ~ ratios is very inprecise and it would seem to be difficult'l to obtain good cleaning effects from the system described es-pescially for a wide spectrum of surface types and conditions.
i 15 The ~laded rotor or plodder would be difficult or impossible to seal against substantial pressure differences and control ( shear which could damage delicate particle media. The system .' '~ ~ is gravity dependent and therefore limiting for media which , tends to pack and plug up the system. The gravity of media 20 passed by the plodder and that by the receiving auger cannot ~! b:e matched in a practical way and necessitates and overflow to the receiver. The design of the screw or auger does not due to its design seal against pressure.
.~ , In Canadian Patent Application ~o~ 601,142 filed May 30, 1989 in the name of the same inventors as the present application, a method and apparatus for particle bla~t ~ cleaning and treating of surfaces is described comprising ¦ metering a flow of particles rom a supply, positively 30 feeding the particle ~low from the metering stage into a fluidizer, fluidizing the particle flow with a controlled, ~ metered flow of fluid taken from a pressuriæed fluid source, ; pneumatically conveying a particle-fluid stream from the fluidizing stage to a ~last head, and controlling the fluid 35 flow rates and the particle amount rates and the mass flow ratios of the flows precisely and over fairly w~de ranges to ,, ..... , ,...... ., ... . .. ~
``` 1 324591 provide a particle blast cleaning and treating effect for a wide range of surfaces and objects. In that application method steps and apparatus units for preparing a particle media for oleaning and treating systems are described and these include crushing (size reduction), storing (surge vessel) with level control, metering by pumping, and fluidizing for transport.
,, ' .
~ BRIEF SUMMARY OF INVENTION
., 10 It is an object of the present invention to provide apparatus ~` for preparing, classifying~ and metering particle media useful ~or many purposes especially particle blast cleaning and treating systems in which the particle preparation parameters are under complete and positive control.
. . .
These and other objects of the invention are achieved by apparatus for preparing, classifying, and metering particle rl media useful for various purposes including particle blast cleaning and treating systems comprising means for kaking a media having a working particle size range and sending the media particles along with a fluidizing air input through a scroll, a classifier/surge tank acting as a cyclone separator ~`l connected to the fluidiæed particle/air stream output of the scroll, means for taking the lighter portions of the particles from the cyclone separator and transporting this to recovery or utilization means, means for taking the heavier portions ~J of the particles from the cyclone separator and transporting this to utilization means or recovery, metering means for taking the lighter or heavier portion of the particles from the cyclone separator in a controlled manner, and means for taking the metered particle stream from the metering means and providing along with a pressurized air input, a fluidized air/particIe output in a controlled manner such that the air/particle ratios are controlled and the particles are 3 in a steady or pulsed flow as desired.
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BRIEF DESCRIPTION OF DRAWINGS
Figure 1 is a schematic flow diagram of a particle media preparation system for particle blast cleaning and other purposes, Figure 2 is a cross-section of apparatus for the system of Figure 1, Figure 3 is an end view of the apparatus of Figure 2, Flgure 4 is of a partially broken view of the apparatus of Figure 2, : . .
Figure 5 is a cross-section view of the crusher and classifier impeller, ~ Figure 6 is a cross-section on A-A of Figure 2 of the :i~ crusher and scroll, i ~: Figure 7 is a cross-section of the flow metering screw, ~: 20 : Figure 8 is a cross-section of the rotary metering pumps, : Figure 9 is a top view of the rotary metering pump, ~J~
Figure 10 is a cross-section of the rotary cylinder showing ~ the individual chambers, : :: .
~ . Figure 11 shows detail of the labrynth seal for purposes of ~i maintaining and isolating pressure in incremental steps, :30 Figure 12 is a schematic diagram of the particle media preparation apparatus in a complete particle blast cleaning ~ and treating system.
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DESCRIPTION OF THE INVENTION
Referring to the drawings, Figure 1 is a schematic flow diagram of the system wherein the input media material is fed into crusher ~sizer) 1 which has a fluidizing air input.
The air is added to fluidize and prevent temperature rise of the media due to the energy introduced for size reduction and air for cyclonic action. A mechanical impeller 2 which may run at the crusher/sizer speed or at other desired speeds to introduce a spin to the sized material and send the material and the fluidizing air through scroll 3 to initiate cyclone action in classifier/surge task 4. In addition to providing surge volume and level control, this vessel provides media size control by cyclonic action (settling rate difference between ~ larger heavier and smaller lighter particles). An eductor 5 3 generates a forced vortex and a velocity which entrains the tl 15 finer particles having slower settling rates and fluidizes the ~ entrained media for transport. Velocities and therefore i~ selection of the fineness of the particles withdrawn are adjustable by the total entrained air throughout via eductor ,J'I (motive) air rate control. Crusher/sizer speed control 3~ 20 provides further adjustment of fines to coarse particle ratios.
~; ~he system may be run such that the fines are the rejects to be sent to recovery and the coarser material the product.
~N~ Alternatively, the fines may be the product and the coarser recycled for additional size reduction. This arrangement may preclude the need for multiple crushers and size reduction steps which is the current industrial practice.
Delicate or difficult to handle media (dry, abrasive, etc.
cannot be easlly handled without shear in pumping through any appreciable pressure rise in known suitable apparatus. Output I from classifier/surge cyclone 4 is sent via flow metering pump 6 to a rotary cylinder metering pump 8 which is designed to raise the metered particles to the desired pressure with near l 35 zero shear by passing cylinder chamhers through progressive .,~ ' .
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pressure increments with air or their fluid added in a controlled manner to raise the pressure as required and also fluidize.
The chambers in ~he rotary pump may be fully or partially loaded at the inlet and the output rate controlled by the rate of chamber deliveries (by the R.P.M. of the drive motor). For more control and providing for pulse rate of delivery, the pump chambers are oversized with respect to the desired maximum rate and the R.P.M. independently controls the pulse rate.
i ~ Figures 2, 3, and 4 illustrate the above system in more - detail. A sizer/crusher 1 is driven by crusher speed control motor 10. Input media is supplied to the crusher by screw ; 15 drive 11 driven by motor 12 (see Figure 4) and classifying air - is introduced at port 13. From crusher 1 the crushed material and classifying air is driven by impeller 2 through scroll 3 into classifier/surge task 4 to act as a cyclone classifier.
Scroll 3 also has classifying air injected into the air stream by air injection devices 3a and 3b positioned as shown in Figure 4. These are known devices and serve to provide an enhanced -~ rotating air stream to the cyclone classifier. The crusher and impeller (shown in cross-section in Figure 5 and in a cross-section in Figure 5 and in a cross-section on A-A of Figure 2 in Figure 6) may be driven at the same speed or at differing speeds by suitable drive shaft arrangement. A cut ~'l ~3 (portion) of the media particles can be taken from the cyclone classifier by eductor nozzle assembly S having an eductor air input Sa. This material which would be the lighter, finer 30 portion can be taken to reiect, recycled, or if required as an input to a cleaning, treating, or other utilization system.
The heavier portion of the material from the cyclone is taken to a metering device preferably a screw device such as shown in Figure 7. This is driven by a con~rollable motor drive (see Figure 3). The metering screw is precisely machined and has :1 .
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direct feed entry from the cyclone (via fluidizing and gravity) through a large open throat and discharges directly into a rotary metering pump. The metered material from the screw which would be at a near atmospheric pressure is fed into the rotary chamber pump driven by a controllable motor 8a.
This pump is shown in more detail in Figur~s 8, 9, 10, and 11.
As seen in cross section in Figure 8 and in top view in Figure 9, the device comprises a cylindrical housing 15 having a top plate 16 and a bottom plate 17. An input port 18 which would be connected to the output of the cyclone classifier via the metering screw serves to introduce the particle material into the device.
A process air injection nozzle introduces fluidizing and transporting air into the device and a fluidized process feed is taken at nozzle 20. A rotating cylinder 21 containing a series of chambers 22 as shown in Figure 10 is shaft mounted inside housing 15. These chambers which are cylindrical in shape are sealed top and bottom by a labrynth seal shown in I detail in Figure 11 and these provide good sealing action ,~ without direct contact between the rotary cylinder and the housing walls. As the rotary cylinder rotates each of the chambers comes in turn under port 18 and is filled either fully or partially as desired with th~ particle material. The chamber then moves to a position under pressurized air inlet port 25 (see especially Figure 9) which raises the pressure in the chamber to a first levelO Further pressure levels are introduced in step-wise fashion as the chamber moves past ports 26, 27, and 23 until it reaches port 19 where an increased pressurized air input fluidizes and transports the material to the desired i, output at port 20 (see Figure 8). The chambers then pass under air outlet ports 29 and 30 which serve to drop the pressure to ~, the working level for the chambers when they pass to inlet port ~ 18. This pressurized air output may be reused by injecting ;` back into the system at suitable positions.
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`-"` 1 32459 1 Figuxe 12 illustrat~s the media preparation system described above ln a complete particle blast cleaning and treating system. The raw media supply is fed to crusher 32 having a fluidizing air input 33 from air source 34, with the media particles passing through impeller 35, scroll 36 having air injection inputs 36a and 36b to cyclone classifier 37. The fines portion is taken by eductor 38 and sent to recycle. The heavier portion of the particles passes to metering screw 19 controlled by motor 39a and then to rotary cylinder 40 which as described above sends a con-trolled fluidized air and particle stream to fluidizer 41 having a pressurized air input from air source 34 via control valve 44. The output air and particle stream from the fluidizer are transported through line 42 to blast head 43 having accelerating air inlet nozzles 43a and 43b supplied from the air source via lines 45 and 46 and controlled by ,~
;1 control valves 47 and 48~ This system provides complete control of all the parameters required to give excellent cleaning and treating action to a wide range of surface conditions.
.,j It will be readily apparent to a person skilled in the art that a number of variations and modifications can be made without departing from the true spiri~ of the invention which will now be pointed out in the appended clalms.
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This invention relates to apparatus for preparing, clas-sifying, and metering particle media useful for various purposes and especially fox particle blast cleaning and treating systems.
.
U.K. Patent ~pplication GB 2,171,624A describes method and apparatus for cleaning by abrasive blastinq. The input particles are fed by gravity into a chaxging chamber which is a cylindrical shell with a rotating bladed rotor therein to carry the particles to an output leading to an auger which drives them in a continuous manner into an entraining air jet stream. Control of the air and particle amounts and ~ ratios is very inprecise and it would seem to be difficult'l to obtain good cleaning effects from the system described es-pescially for a wide spectrum of surface types and conditions.
i 15 The ~laded rotor or plodder would be difficult or impossible to seal against substantial pressure differences and control ( shear which could damage delicate particle media. The system .' '~ ~ is gravity dependent and therefore limiting for media which , tends to pack and plug up the system. The gravity of media 20 passed by the plodder and that by the receiving auger cannot ~! b:e matched in a practical way and necessitates and overflow to the receiver. The design of the screw or auger does not due to its design seal against pressure.
.~ , In Canadian Patent Application ~o~ 601,142 filed May 30, 1989 in the name of the same inventors as the present application, a method and apparatus for particle bla~t ~ cleaning and treating of surfaces is described comprising ¦ metering a flow of particles rom a supply, positively 30 feeding the particle ~low from the metering stage into a fluidizer, fluidizing the particle flow with a controlled, ~ metered flow of fluid taken from a pressuriæed fluid source, ; pneumatically conveying a particle-fluid stream from the fluidizing stage to a ~last head, and controlling the fluid 35 flow rates and the particle amount rates and the mass flow ratios of the flows precisely and over fairly w~de ranges to ,, ..... , ,...... ., ... . .. ~
``` 1 324591 provide a particle blast cleaning and treating effect for a wide range of surfaces and objects. In that application method steps and apparatus units for preparing a particle media for oleaning and treating systems are described and these include crushing (size reduction), storing (surge vessel) with level control, metering by pumping, and fluidizing for transport.
,, ' .
~ BRIEF SUMMARY OF INVENTION
., 10 It is an object of the present invention to provide apparatus ~` for preparing, classifying~ and metering particle media useful ~or many purposes especially particle blast cleaning and treating systems in which the particle preparation parameters are under complete and positive control.
. . .
These and other objects of the invention are achieved by apparatus for preparing, classifying, and metering particle rl media useful for various purposes including particle blast cleaning and treating systems comprising means for kaking a media having a working particle size range and sending the media particles along with a fluidizing air input through a scroll, a classifier/surge tank acting as a cyclone separator ~`l connected to the fluidiæed particle/air stream output of the scroll, means for taking the lighter portions of the particles from the cyclone separator and transporting this to recovery or utilization means, means for taking the heavier portions ~J of the particles from the cyclone separator and transporting this to utilization means or recovery, metering means for taking the lighter or heavier portion of the particles from the cyclone separator in a controlled manner, and means for taking the metered particle stream from the metering means and providing along with a pressurized air input, a fluidized air/particIe output in a controlled manner such that the air/particle ratios are controlled and the particles are 3 in a steady or pulsed flow as desired.
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:`~,, ~ 2 . , : /
.. -.. : ~ :, : . , . . . . . . ~ .
.~.:.:: : ~. - .
BRIEF DESCRIPTION OF DRAWINGS
Figure 1 is a schematic flow diagram of a particle media preparation system for particle blast cleaning and other purposes, Figure 2 is a cross-section of apparatus for the system of Figure 1, Figure 3 is an end view of the apparatus of Figure 2, Flgure 4 is of a partially broken view of the apparatus of Figure 2, : . .
Figure 5 is a cross-section view of the crusher and classifier impeller, ~ Figure 6 is a cross-section on A-A of Figure 2 of the :i~ crusher and scroll, i ~: Figure 7 is a cross-section of the flow metering screw, ~: 20 : Figure 8 is a cross-section of the rotary metering pumps, : Figure 9 is a top view of the rotary metering pump, ~J~
Figure 10 is a cross-section of the rotary cylinder showing ~ the individual chambers, : :: .
~ . Figure 11 shows detail of the labrynth seal for purposes of ~i maintaining and isolating pressure in incremental steps, :30 Figure 12 is a schematic diagram of the particle media preparation apparatus in a complete particle blast cleaning ~ and treating system.
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DESCRIPTION OF THE INVENTION
Referring to the drawings, Figure 1 is a schematic flow diagram of the system wherein the input media material is fed into crusher ~sizer) 1 which has a fluidizing air input.
The air is added to fluidize and prevent temperature rise of the media due to the energy introduced for size reduction and air for cyclonic action. A mechanical impeller 2 which may run at the crusher/sizer speed or at other desired speeds to introduce a spin to the sized material and send the material and the fluidizing air through scroll 3 to initiate cyclone action in classifier/surge task 4. In addition to providing surge volume and level control, this vessel provides media size control by cyclonic action (settling rate difference between ~ larger heavier and smaller lighter particles). An eductor 5 3 generates a forced vortex and a velocity which entrains the tl 15 finer particles having slower settling rates and fluidizes the ~ entrained media for transport. Velocities and therefore i~ selection of the fineness of the particles withdrawn are adjustable by the total entrained air throughout via eductor ,J'I (motive) air rate control. Crusher/sizer speed control 3~ 20 provides further adjustment of fines to coarse particle ratios.
~; ~he system may be run such that the fines are the rejects to be sent to recovery and the coarser material the product.
~N~ Alternatively, the fines may be the product and the coarser recycled for additional size reduction. This arrangement may preclude the need for multiple crushers and size reduction steps which is the current industrial practice.
Delicate or difficult to handle media (dry, abrasive, etc.
cannot be easlly handled without shear in pumping through any appreciable pressure rise in known suitable apparatus. Output I from classifier/surge cyclone 4 is sent via flow metering pump 6 to a rotary cylinder metering pump 8 which is designed to raise the metered particles to the desired pressure with near l 35 zero shear by passing cylinder chamhers through progressive .,~ ' .
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1 3245q 1 ,, .
pressure increments with air or their fluid added in a controlled manner to raise the pressure as required and also fluidize.
The chambers in ~he rotary pump may be fully or partially loaded at the inlet and the output rate controlled by the rate of chamber deliveries (by the R.P.M. of the drive motor). For more control and providing for pulse rate of delivery, the pump chambers are oversized with respect to the desired maximum rate and the R.P.M. independently controls the pulse rate.
i ~ Figures 2, 3, and 4 illustrate the above system in more - detail. A sizer/crusher 1 is driven by crusher speed control motor 10. Input media is supplied to the crusher by screw ; 15 drive 11 driven by motor 12 (see Figure 4) and classifying air - is introduced at port 13. From crusher 1 the crushed material and classifying air is driven by impeller 2 through scroll 3 into classifier/surge task 4 to act as a cyclone classifier.
Scroll 3 also has classifying air injected into the air stream by air injection devices 3a and 3b positioned as shown in Figure 4. These are known devices and serve to provide an enhanced -~ rotating air stream to the cyclone classifier. The crusher and impeller (shown in cross-section in Figure 5 and in a cross-section in Figure 5 and in a cross-section on A-A of Figure 2 in Figure 6) may be driven at the same speed or at differing speeds by suitable drive shaft arrangement. A cut ~'l ~3 (portion) of the media particles can be taken from the cyclone classifier by eductor nozzle assembly S having an eductor air input Sa. This material which would be the lighter, finer 30 portion can be taken to reiect, recycled, or if required as an input to a cleaning, treating, or other utilization system.
The heavier portion of the material from the cyclone is taken to a metering device preferably a screw device such as shown in Figure 7. This is driven by a con~rollable motor drive (see Figure 3). The metering screw is precisely machined and has :1 .
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.
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direct feed entry from the cyclone (via fluidizing and gravity) through a large open throat and discharges directly into a rotary metering pump. The metered material from the screw which would be at a near atmospheric pressure is fed into the rotary chamber pump driven by a controllable motor 8a.
This pump is shown in more detail in Figur~s 8, 9, 10, and 11.
As seen in cross section in Figure 8 and in top view in Figure 9, the device comprises a cylindrical housing 15 having a top plate 16 and a bottom plate 17. An input port 18 which would be connected to the output of the cyclone classifier via the metering screw serves to introduce the particle material into the device.
A process air injection nozzle introduces fluidizing and transporting air into the device and a fluidized process feed is taken at nozzle 20. A rotating cylinder 21 containing a series of chambers 22 as shown in Figure 10 is shaft mounted inside housing 15. These chambers which are cylindrical in shape are sealed top and bottom by a labrynth seal shown in I detail in Figure 11 and these provide good sealing action ,~ without direct contact between the rotary cylinder and the housing walls. As the rotary cylinder rotates each of the chambers comes in turn under port 18 and is filled either fully or partially as desired with th~ particle material. The chamber then moves to a position under pressurized air inlet port 25 (see especially Figure 9) which raises the pressure in the chamber to a first levelO Further pressure levels are introduced in step-wise fashion as the chamber moves past ports 26, 27, and 23 until it reaches port 19 where an increased pressurized air input fluidizes and transports the material to the desired i, output at port 20 (see Figure 8). The chambers then pass under air outlet ports 29 and 30 which serve to drop the pressure to ~, the working level for the chambers when they pass to inlet port ~ 18. This pressurized air output may be reused by injecting ;` back into the system at suitable positions.
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`-"` 1 32459 1 Figuxe 12 illustrat~s the media preparation system described above ln a complete particle blast cleaning and treating system. The raw media supply is fed to crusher 32 having a fluidizing air input 33 from air source 34, with the media particles passing through impeller 35, scroll 36 having air injection inputs 36a and 36b to cyclone classifier 37. The fines portion is taken by eductor 38 and sent to recycle. The heavier portion of the particles passes to metering screw 19 controlled by motor 39a and then to rotary cylinder 40 which as described above sends a con-trolled fluidized air and particle stream to fluidizer 41 having a pressurized air input from air source 34 via control valve 44. The output air and particle stream from the fluidizer are transported through line 42 to blast head 43 having accelerating air inlet nozzles 43a and 43b supplied from the air source via lines 45 and 46 and controlled by ,~
;1 control valves 47 and 48~ This system provides complete control of all the parameters required to give excellent cleaning and treating action to a wide range of surface conditions.
.,j It will be readily apparent to a person skilled in the art that a number of variations and modifications can be made without departing from the true spiri~ of the invention which will now be pointed out in the appended clalms.
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Claims (11)
1. Apparatus for preparing, classifying, and metering parti-cle media useful for various purposes including blast cleaning and treating systems comprising:
a) means for taking a media input having a working particle size range and sending the media particles along with a fluidizing air input through a scroll, b) a classifier/surge tank acting as a cyclone separator connected to the fluidized particle/air stream output of the scroll, c) means for taking the lighter portions of the particles from the cyclone separator and transporting this to recovery or utilization means, d) means for taking the heavier portions of the particles from the cyclone separator and transporting this to the utilization means or recovery, e) metering means for taking the lighter or heavier portion of the particles from the cyclone separator in a controlled manner, and f) means for taking the metered particle stream from the metering means and providing along with a pressurized air input, a fluidized air/particle output in a controlled manner such that the air/particle ratios are controlled and the particles are in a steady or pulsed flow as desired.
a) means for taking a media input having a working particle size range and sending the media particles along with a fluidizing air input through a scroll, b) a classifier/surge tank acting as a cyclone separator connected to the fluidized particle/air stream output of the scroll, c) means for taking the lighter portions of the particles from the cyclone separator and transporting this to recovery or utilization means, d) means for taking the heavier portions of the particles from the cyclone separator and transporting this to the utilization means or recovery, e) metering means for taking the lighter or heavier portion of the particles from the cyclone separator in a controlled manner, and f) means for taking the metered particle stream from the metering means and providing along with a pressurized air input, a fluidized air/particle output in a controlled manner such that the air/particle ratios are controlled and the particles are in a steady or pulsed flow as desired.
2. Apparatus for preparing, classifying, and metering particle media as in claim 1 wherein the means for taking the lighter or heavier portion of the particles from the cyclone separator is an eductor having pressurized air input.
3. Apparatus for preparing, classifying, and metering particle media as in claim 1 wherein the metering means is a controlled screw pump.
4. Apparatus for preparing, classifying, and metering particle media as in claim 1 wherein the means for taking the metered particle stream from the metering means is a rotary pump having a rotating cylinder inside a housing, the cylinder having a series of chambers arranged to pass serially under an inlet port in the housing to accept either a full or partial charge of particle material then under two or more pressurized air inlet ports such as to increase the pressure in the chamber in steps, and then to an outlet port position having a pressurized fluidizing and transporting air inlet arranged to send the air/particle stream to the utilization means.
5. Apparatus for preparing, classifying, and metering particle media useful for various purposes including particle blast cleaning and treating systems comprising:
a) means for sizing a media input to a working particle size range, b) means for taking the particle output from the sizing means and sending the particles along with a fluidizing air input through a scroll to initiate cyclonic action by pneumatic or mechanical action, c) a classifier/surge tank acting as a cyclone separator connected to the fluidized particle/air stream output of the scroll, d) means for taking the lighter portions of the particles from the cyclone separator and transporting this to recovery or utilization means, e) means for taking the heavier portions of the particles from the cyclone separator and transporting this to utilization or recovery means, f) metering means for taking either the lighter or the heavier portion of the particles from the cyclone separator in a controlled manner, g) means for taking the metered particle stream from the metering means and providing along with a pressurized air input, a fluidized air/particle output in a controlled manner such that the air/particle ratios are controlled and the particles are in a steady or pulsed flow as desired.
a) means for sizing a media input to a working particle size range, b) means for taking the particle output from the sizing means and sending the particles along with a fluidizing air input through a scroll to initiate cyclonic action by pneumatic or mechanical action, c) a classifier/surge tank acting as a cyclone separator connected to the fluidized particle/air stream output of the scroll, d) means for taking the lighter portions of the particles from the cyclone separator and transporting this to recovery or utilization means, e) means for taking the heavier portions of the particles from the cyclone separator and transporting this to utilization or recovery means, f) metering means for taking either the lighter or the heavier portion of the particles from the cyclone separator in a controlled manner, g) means for taking the metered particle stream from the metering means and providing along with a pressurized air input, a fluidized air/particle output in a controlled manner such that the air/particle ratios are controlled and the particles are in a steady or pulsed flow as desired.
6. Apparatus for preparing, classifying/ and metering particle media as in claim 5 wherein the means for taking the lighter or heavier portion of the particles from the cyclone separator is an eductor having a pressurized air input.
7. Apparatus for preparing, classifying, and metering particle media as in claim 5 wherein the metering means is a controlled screw pump.
8. Apparatus for preparing, classifying, and metering particle media as in claim 5 wherein the means for taking the metered particle stream from the metering means is a rotary pump having a rotating cylinder inside a housing, the cylinder having a series of chambers arranged to pass serially under an inlet port in the housing to accept either a full or partial charge of particle material then under two or more pressurized air inlet ports such as to increase the pressure in the chamber in steps, and then to an outlet port position having a pres-surized fluidizing and transporting air inlet arranged to send the air/particle stream to the utilization means.
9. Apparatus for preparing, classifying, and metering particle media as in claim 5 wherein the means for sizing the media input is a crusher.
10. Apparatus for preparing, classifying, and metering par-ticle media as in claim 5 wherein the means for taking the particle output from the sizing means is an impeller.
11. Apparatus for preparing, classifying, and metering particle media as in claim 5 wherein the scroll incorporates air injection devices to provide cyclonic action in the cyclone separator.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000611137A CA1324591C (en) | 1989-09-12 | 1989-09-12 | Apparatus for preparing, classifying, and metering particle media |
| AU63358/90A AU6335890A (en) | 1989-09-12 | 1990-09-12 | Apparatus for preparing, classifying and metering particle media |
| PCT/CA1990/000291 WO1991004449A1 (en) | 1989-09-12 | 1990-09-12 | Apparatus for preparing, classifying and metering particle media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000611137A CA1324591C (en) | 1989-09-12 | 1989-09-12 | Apparatus for preparing, classifying, and metering particle media |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1324591C true CA1324591C (en) | 1993-11-23 |
Family
ID=4140585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000611137A Expired - Fee Related CA1324591C (en) | 1989-09-12 | 1989-09-12 | Apparatus for preparing, classifying, and metering particle media |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU6335890A (en) |
| CA (1) | CA1324591C (en) |
| WO (1) | WO1991004449A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU4302893A (en) * | 1992-06-01 | 1993-12-30 | Ice Blast International Ltd. | Particle blasting utilizing crystalline ice |
| WO1995022432A1 (en) * | 1994-02-21 | 1995-08-24 | Waterkracht B.V. | Blasting device with adjustable blast strength |
| EP0758452B1 (en) * | 1994-05-04 | 2001-11-07 | Mount Sinai Hospital Corporation | Modulators of cytokines of the tgf-beta superfamily and methods for assaying for same |
| US5623831A (en) * | 1995-05-10 | 1997-04-29 | Mesher; Terry | Fluidized particle production system and process |
| US5910042A (en) * | 1997-02-18 | 1999-06-08 | Inter Ice, Inc. | Ice blasting cleaning system and method |
| GB9924095D0 (en) * | 1999-10-13 | 1999-12-15 | Exa Sa | Abrasive blasting |
| DE10351164B4 (en) * | 2003-11-03 | 2006-12-28 | Snow + Promotion Gmbh | Device for discharging crushed ice, in particular flake ice or uses in a snow machine |
| TWI296956B (en) * | 2005-03-11 | 2008-05-21 | Cold Jet Llc | Particle blast system with synchronized feeder and particle generator |
| US7328605B2 (en) | 2006-01-31 | 2008-02-12 | United Technologies Corporation | Ice-processing device |
| DE602007012421D1 (en) * | 2006-03-20 | 2011-03-24 | Swiss | BEAM DEVICE FOR PARTICLES WITH DOSING DEVICE |
| WO2008144405A1 (en) | 2007-05-15 | 2008-11-27 | Cold Jet, Llc | Particle blasting method and apparatus therefor |
| US8187057B2 (en) | 2009-01-05 | 2012-05-29 | Cold Jet Llc | Blast nozzle with blast media fragmenter |
| ES2398987B1 (en) * | 2011-03-17 | 2014-01-17 | Abr Ingenieros, S.L. | INSTALLATION FOR MANUFACTURING OF PICADO ICE |
| US9931639B2 (en) | 2014-01-16 | 2018-04-03 | Cold Jet, Llc | Blast media fragmenter |
| JP6568319B2 (en) * | 2016-01-27 | 2019-08-28 | コウルソン アイス ブラスト リミテッド | Ice blasting system and method |
| WO2020191487A1 (en) * | 2019-03-23 | 2020-10-01 | Coulson Ice Blast Ltd. | Rotary crusher and feeder for ice blasting system |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE168849C (en) * | ||||
| US2502161A (en) * | 1943-08-16 | 1950-03-28 | Teresa K Lilly | Ice picking and grading machine |
| US2600508A (en) * | 1948-12-20 | 1952-06-17 | Harry A Lehman | Ice sizing machine |
| GB958759A (en) * | 1962-11-02 | 1964-05-27 | Vacu Blast Ltd | Improvements in or relating to abrasive blasting apparatus |
| US3788566A (en) * | 1973-05-15 | 1974-01-29 | W Morris | Cube ice separator and screening apparatus |
| US4389820A (en) * | 1980-12-29 | 1983-06-28 | Lockheed Corporation | Blasting machine utilizing sublimable particles |
| US4535942A (en) * | 1981-12-02 | 1985-08-20 | Kyoeizoki Co., Ltd. | Apparatus for containing easily solidifying powder and particles |
| US4404817A (en) * | 1982-02-25 | 1983-09-20 | Cox Iii Herman G | Satellite ice plant |
| JPS59209991A (en) * | 1983-04-11 | 1984-11-28 | Toho Kikai Kogyo Kk | Crushed ice carrying device for ship |
| JPS60141474A (en) * | 1983-12-28 | 1985-07-26 | Power Reactor & Nuclear Fuel Dev Corp | Projection of ice particle |
| FR2581324B1 (en) * | 1985-05-03 | 1988-07-15 | Porte Michel | DEVICE FOR PROVIDING A REGULAR FLOW SPRAY OF POWDERY PRODUCTS OF VERY FINE GRANULOMETRY AND ITS DIFFERENT APPLICATIONS IN PARTICULAR FOR ABRASIVE PRODUCTS |
| JPS62120978A (en) * | 1985-11-18 | 1987-06-02 | Fuji Seiki Seizosho:Kk | Cleaning device with spray of crushed ice |
| JPS62140767A (en) * | 1985-12-16 | 1987-06-24 | Aisin Warner Ltd | Shot blasting machining device by ice grains |
| US4744181A (en) * | 1986-11-17 | 1988-05-17 | Moore David E | Particle-blast cleaning apparatus and method |
| DE3738246A1 (en) * | 1987-11-11 | 1989-05-24 | Werner & Zeisse Gmbh & Co | METHOD AND DEVICE FOR REMOVING COATINGS AND IMPURITIES |
-
1989
- 1989-09-12 CA CA000611137A patent/CA1324591C/en not_active Expired - Fee Related
-
1990
- 1990-09-12 AU AU63358/90A patent/AU6335890A/en not_active Abandoned
- 1990-09-12 WO PCT/CA1990/000291 patent/WO1991004449A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO1991004449A1 (en) | 1991-04-04 |
| AU6335890A (en) | 1991-04-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |