US3750911A - Device for delivering a measured charge of a flowable powder - Google Patents
Device for delivering a measured charge of a flowable powder Download PDFInfo
- Publication number
- US3750911A US3750911A US00208839A US3750911DA US3750911A US 3750911 A US3750911 A US 3750911A US 00208839 A US00208839 A US 00208839A US 3750911D A US3750911D A US 3750911DA US 3750911 A US3750911 A US 3750911A
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- Prior art keywords
- rod
- conduit
- powder
- reciprocating
- channel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
- G01F11/12—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
- G01F11/14—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber reciprocates
- G01F11/18—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber reciprocates for fluent solid material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
- B01J8/002—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor with a moving instrument
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
- B65B1/36—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by volumetric devices or methods
- B65B1/38—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by volumetric devices or methods by pistons co-operating with measuring chambers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
- B65G53/4683—Gates or sluices, e.g. rotary wheels with a reciprocating mover acting directly on material
Definitions
- the present invention relates to a device for delivering a measured unit volume or charge of a flowable powder, especially into a gas space under superatmospheric pressure. More particularly, the present invention relates to the charging of powdery catalysts and powdery reaction components into the gas space of a reactor operated under relatively high pressure.
- the devices proposed for charging unit volumes of powdery solids generally comprise a storage container and a feeding device.
- the storage container is an open vessel, and worms, disks or rolls with cells are used as the feeding device.
- the charge of powder is determined directly by the feeding device or a measuring vessel connected thereafter.
- mechanical discharging devices are used for cleaning the cylindrical measuring vessel.
- Most of the known devices can be constructed with appropriate casings so as to be dust-proof. It is difficult, however, to introduce powders against superatmospheric pressures with encased devices as even small increases above atmospheric pressure cause the gas to pass back through the feeding and measuring means whereby the charging of flowable powders, which is at best inaccurate, is rendered more difficult.
- the known devices fail completely if they are operated against high gas pressures, for example, in the range of from to 50 atmospheres gauge.
- the present invention provides a device for delivering a measured charge of a flowable powder, comprising a vertical, slidably mounted piston rod, which rod passes through a storage container and tits tightly in a passage connecting the storage container with a lower, buffer vessel, the rod being provided with a constriction, which constriction reaches into the storage container when, and only when, the piston rod is at the upper end of its stroke, and reaches into the buffer vessel when, and only when, the piston rod is at the lower end of its stroke, the portion of the piston rod below the constriction fitting tightly in a first channel, which is in connection with a second channel which has aclearing' rod slidably mounted and fitting tightly therein, the second channel being open at one end, the clearing rod occupying thesecond channel at one end ofits stroke and at'the opposite end of its stroke enabling a communication to be established between the first channel and the open end of the second channel.
- FIG. I is a longitudinal view of a device according to the invention and FIG. 2 is a part-sectional view of the device shown in FIG. 1.
- the vertical piston rod 2 is provided with a constriction 1 to measure and carry the charge of the material to be introduced.
- the piston rod 2 is in its lower end position where the constriction 1 projects into a buffer vessel 4.'At the upper end position of the piston, the constriction 1 is situated in a storagecontainer 3.
- the end of the piston rod 2 below the constric tion 1 is fitted tightly in a channel 5. Part of the said channel is visible in FIG. 2.
- the lower end of the channel 5 is hidden behind the lower end of the piston rod 2.
- the channel 5 is in connection with a channel 6 of a clearing rod 7 as can be seen in FIG. 2. At one end of its stroke, the clearing rod 7 occupies the channel 6 as shown in FIG.
- the channel 6 is open to the gas space of the reactor via a connection 8
- the mouth of the channel 5 is in connection with the channel 6, and a connection 9 to a blowing device not shown is open.
- the blowing device comprises a pressure gas container or a tube net in communication with the connection 9 by way of a valve 15.
- the pistons can be driven in known manner by a gear and programming disk or advantageously by pneumatic means.
- pneumatic cylinders 10 and 11 which are in communication via three-way valves with a known pressure gas source not shown.
- The' valves can be opened and closed in known manner by electric devices, for example, a programme switch.
- stuffing boxes 12 with suction channels following them are advantageously installed in the channels 5 and 6.
- This is of special advantage when the powder to be charged is a catalyst used to initiate or accelerate a reaction in the gas space of a connected reactor.
- gaseous reactants are prevented in simple manner from penetrating into the buffer vessel 4 and the storage container 3 by means of a suction channel 13 which is connected with a vacuum installation of known type by way of a valve 17.
- the connection 9 in the guide channel 6 may also act as a suction channel.
- the invention is now further described with reference to the position of the piston rod 2 and the clearing rod 7 as represented in FIG. I.
- the valve 18 is open while valves 15 and 17 are closed.
- the buffer vessel 4 contains a powdery catalyst in an amount corresponding to the volume of constriction I in piston rod 2.
- Storage container 3 is at least partially charged with the powdery catalyst: under a blanket of nitrogen introduced through conduit 19.
- Piston rod 2 is moved, to the upper end position which is reached when constriction 1 projects into storage container 3 to such an extent that it is filled with powder. In this position, the powder contained in buffer vessel 4 is discharged into channel 5 of piston rod 2. Then the piston rod 2 is moved downwards to .an intermediate position as represented in FIG. Zso that the powder in channel 5 is not compressed. The powder now contained in the contriction 1 cannot yet fall into the buffer vessel 4.
- valves I5 and 17 are opened, the valve 18 is closed and the clearing rod 7 isreturned to the position represented in FIG. 2.
- a gaseous reactant or a gas which is inert in the reaction flows through the open valve 15 into the free space of channels 5 and 6 and blows the powder contained therein through a connection 8 into the gas space.
- the piston rod 2 and the clearing rod 7 return to their initial position one after the other and push any residues of the powder which may still be present out of the channels.
- the valve is closed and the valve 18 is opened.
- the suctioning means behind the stuffing boxes may be dispensed with.
- a device for delivering a measured charge of a flowable powder comprising a storage container for said powder and a buffer vessel located downstream of said storage container andin communication therewith through a flow passage in said device, means defining first and-second flow conduits in said device with said first conduit being located in communication with said buffer vessel and in axial alignment with said flow passage, said second conduit being located at an angle with respect to said first conduit, in communication therewith, and having an open discharge end; a first elongated rod slidably mounted in said flow passage for reciprocating movement therein and having one end thereof slidably received in said first conduit, said first elongated rod having a constriction formed therein intermediate its ends, and means for reciprocating said first elongated rod between first and second positions wherein, at said first position said constriction is located in said storage container to receive said measured charge of powder and said one end of the rod is located in said buffer vessel, and at said second position said constriction is located in said buffer vessel to deposit said measured powder charge therein and said
- the device as defined in claim 1 including means for supplying a pressurized gas to said second conduit to blow said powder supplied to said second conduit from said first conduit out of said open end before said second rod is moved from its first to its second positions.
- the device as defined in claim 5 including stuffing boxes associated with each of said conduits for forming a gas seal with said rods and vacuum means for drawing off gas leaking past said seals.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Quality & Reliability (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Basic Packing Technique (AREA)
Abstract
A device for delivering a measured charge of a flowable powder comprising a storage container, a vertical piston rod and a buffer vessel, the rod being provided with a constriction which reaches into the storage container when the piston rod is at the upper end of its stroke, and reaches into the buffer vessel when the piston rod is at the lower end of its stroke. In the latter position the piston rod fits tightly in a first channel which is in connection with a second channel which has a clearing rod. At one end of its stroke the clearing rod occupies the second channel and at the opposite end of its stroke establishes a communication between the first channel and the open end of the second channel.
Description
United States Patent [1 1 Ebner et al. Aug. 7, 1973 [54] DEVICE FOR DELIVERING A MEASURED 3,233,790 2/1966 Shichizaemon MOgi 222/254 CHARGE OF A FLOWABLE POWDER 2,847,147 8/1958 Land ZZZ/365 X 2 3,248,] 18 4/1966 Pechy 277/l [75 Inventors: Helmut Ebner; Bernd Stumer; Hans Lang, all of Frankfurt/Mam, Primary Examiner-Robert B. Reeves Germany Assistant Examiner-Thomas E. Kocovsky [73] Assignee: Farbwerke Hoechst Aktiengeselly Koster schaft Vormals Meister Lucius 8: Bruning, Frankfurt am Main, Germany [57] ABSTRACT [22] Filed; Dec. 16, 1971 A device for delivering a measured charge of a flowable powder comprising a storage container, a vertical pis- [21 1 Appl' 208839 ton rod and a buffer vessel, the rod being provided with a constriction which reaches into the storage container [30] Foreign Application Priority Data when the piston rod is at the upper end of its stroke, Dec. 18 1970 Gerinany P 20 62 513.2 and reaches thebuffef vessel whenrthe Piston rod t y is at the lower end of its stroke. In the latterfposition the [52] 222/254 23/252 R 23/288 E, piston rod fits tightly in a first channel which is in con- 23/289, 222/365, 277/59 nection with a second channel which has a clearing rod. 51 Int. Cl B01j 4/02 At one end of its Stroke h clearing rod occupiesihe 58 Field of Search 23/288 R, 288 E, Second channel and at the Opposite end of its Stroke 23/252 R, 2 9; 277 59; 252 254 2 5 tablishes a Communication between the first channel 3 5 453 47 ;-214 17 A 17 C 7 AC and the open'end Of the second channel.
[56] References Cited 6 Claims, 2 Drawing Figures UNITED STATES PATENTS 2,358,956 9/1944 Ashbaugh 222/252 X 2,649,289 8/1953 Giberson .....-....,.....222/254x DEVICE FOR DELIVERING A MEASURED CHARGE OF A FLOWABLE POWDER The present invention relates to a device for delivering a measured unit volume or charge of a flowable powder, especially into a gas space under superatmospheric pressure. More particularly, the present invention relates to the charging of powdery catalysts and powdery reaction components into the gas space of a reactor operated under relatively high pressure.
The devices proposed for charging unit volumes of powdery solids generally comprise a storage container and a feeding device. In most cases, the storage container is an open vessel, and worms, disks or rolls with cells are used as the feeding device. The charge of powder is determined directly by the feeding device or a measuring vessel connected thereafter. In some known devices, for example, balances with a turning container for measuring sticky solids by weight, mechanical discharging devices are used for cleaning the cylindrical measuring vessel.
Most of the known devices can be constructed with appropriate casings so as to be dust-proof. It is difficult, however, to introduce powders against superatmospheric pressures with encased devices as even small increases above atmospheric pressure cause the gas to pass back through the feeding and measuring means whereby the charging of flowable powders, which is at best inaccurate, is rendered more difficult. The known devices fail completely if they are operated against high gas pressures, for example, in the range of from to 50 atmospheres gauge.
It is an object of the present invention to do away with the aforesaid drawback and to provide a device for delivering measured charges of flowable powders into a gas space in which the back pressure of gas into the feeding device and storage container are reliably avoided.
The present invention provides a device for delivering a measured charge of a flowable powder, comprising a vertical, slidably mounted piston rod, which rod passes through a storage container and tits tightly in a passage connecting the storage container with a lower, buffer vessel, the rod being provided with a constriction, which constriction reaches into the storage container when, and only when, the piston rod is at the upper end of its stroke, and reaches into the buffer vessel when, and only when, the piston rod is at the lower end of its stroke, the portion of the piston rod below the constriction fitting tightly in a first channel, which is in connection with a second channel which has aclearing' rod slidably mounted and fitting tightly therein, the second channel being open at one end, the clearing rod occupying thesecond channel at one end ofits stroke and at'the opposite end of its stroke enabling a communication to be established between the first channel and the open end of the second channel.
The invention will now be described by way of example with reference to the accompanying drawing in which:
FIG. I is a longitudinal view of a device according to the invention and FIG. 2 is a part-sectional view of the device shown in FIG. 1.
The vertical piston rod 2 is provided with a constriction 1 to measure and carry the charge of the material to be introduced. In FIG. 1, the piston rod 2 is in its lower end position where the constriction 1 projects into a buffer vessel 4.'At the upper end position of the piston, the constriction 1 is situated in a storagecontainer 3. The end of the piston rod 2 below the constric tion 1 is fitted tightly in a channel 5. Part of the said channel is visible in FIG. 2. In FIG. 1, the lower end of the channel 5 is hidden behind the lower end of the piston rod 2. The channel 5 is in connection with a channel 6 of a clearing rod 7 as can be seen in FIG. 2. At one end of its stroke, the clearing rod 7 occupies the channel 6 as shown in FIG. 1, while at the other end of the stroke of the clearing rod 7, the channel 6 is open to the gas space of the reactor via a connection 8, the mouth of the channel 5 is in connection with the channel 6, and a connection 9 to a blowing device not shown is open. The blowing device comprises a pressure gas container or a tube net in communication with the connection 9 by way of a valve 15.
The pistons can be driven in known manner by a gear and programming disk or advantageously by pneumatic means. In FIG. 1 are shown pneumatic cylinders 10 and 11, which are in communication via three-way valves with a known pressure gas source not shown. The' valves can be opened and closed in known manner by electric devices, for example, a programme switch. The
term known" is used herein to mean in actual use or described in the literature of the art.
To improve the sealing, stuffing boxes 12 with suction channels following them are advantageously installed in the channels 5 and 6. This is of special advantage when the powder to be charged is a catalyst used to initiate or accelerate a reaction in the gas space of a connected reactor. In this case, even very small amounts of gas penetrating into the buffer vessel 4 owing to leaky pistons or stuffing boxes could result in a breakdown of the device. In the device according to the invention, gaseous reactants are prevented in simple manner from penetrating into the buffer vessel 4 and the storage container 3 by means of a suction channel 13 which is connected with a vacuum installation of known type by way of a valve 17. Depending on the position of valves 15 and 18, the connection 9 in the guide channel 6 may also act as a suction channel.
The invention is now further described with reference to the position of the piston rod 2 and the clearing rod 7 as represented in FIG. I. In this phase, the valve 18 is open while valves 15 and 17 are closed. The buffer vessel 4 contains a powdery catalyst in an amount corresponding to the volume of constriction I in piston rod 2. Storage container 3 is at least partially charged with the powdery catalyst: under a blanket of nitrogen introduced through conduit 19.
The operational cycles of the device according to the invention are as follows:
Piston rod 2 is moved, to the upper end position which is reached when constriction 1 projects into storage container 3 to such an extent that it is filled with powder. In this position, the powder contained in buffer vessel 4 is discharged into channel 5 of piston rod 2. Then the piston rod 2 is moved downwards to .an intermediate position as represented in FIG. Zso that the powder in channel 5 is not compressed. The powder now contained in the contriction 1 cannot yet fall into the buffer vessel 4.
In the rest of the cycle, valves I5 and 17 are opened, the valve 18 is closed and the clearing rod 7 isreturned to the position represented in FIG. 2. Under a pressure which is some atmospheres greater than the pressure in the gas space of the reactor, a gaseous reactant or a gas which is inert in the reaction flows through the open valve 15 into the free space of channels 5 and 6 and blows the powder contained therein through a connection 8 into the gas space. The piston rod 2 and the clearing rod 7 return to their initial position one after the other and push any residues of the powder which may still be present out of the channels. Next, the valve is closed and the valve 18 is opened.
The starting position is now reached again. The operational cycle of the rods and valves is repeated either immediately or after a definite period of time. From the above description it can be seen that the clearing rod 7 not only functions as cleaner but also serves as locking element.
If a reaction of the powder or an initiation of a reaction by the powder are not to be feared, the suctioning means behind the stuffing boxes may be dispensed with.
What is claimed is:
l. A device for delivering a measured charge of a flowable powder, said device comprising a storage container for said powder and a buffer vessel located downstream of said storage container andin communication therewith through a flow passage in said device, means defining first and-second flow conduits in said device with said first conduit being located in communication with said buffer vessel and in axial alignment with said flow passage, said second conduit being located at an angle with respect to said first conduit, in communication therewith, and having an open discharge end; a first elongated rod slidably mounted in said flow passage for reciprocating movement therein and having one end thereof slidably received in said first conduit, said first elongated rod having a constriction formed therein intermediate its ends, and means for reciprocating said first elongated rod between first and second positions wherein, at said first position said constriction is located in said storage container to receive said measured charge of powder and said one end of the rod is located in said buffer vessel, and at said second position said constriction is located in said buffer vessel to deposit said measured powder charge therein and said one end of the rod is located in said first conduit; a second elongated rod slidably received in said second conduit, and means for reciprocating said second rod independently of said first rod between a first retracted position wherein said second conduit is opened to provide communication between the open end thereof and said first conduit and a second position wherein said second rod occupies substantially the entire second conduit to isolate said open end thereof from said first conduit.
2. The device as defined in claim 1 including means for supplying a pressurized gas to said second conduit to blow said powder supplied to said second conduit from said first conduit out of said open end before said second rod is moved from its first to its second positions.
3. The device as defined in claim 2 wherein said first and second rods fit relatively tightly in their respective. conduits to advance powder along said conduits as said rods are reciprocated respectively from their first to their second positions. l i
4. The device as defined in claim 3 wherein said means for reciprocating said rods are sequentially operated, and said means for reciprocating said first rod moves said first rod from its first to its second position before said means for reciprocating said second rodmoves said second rod from its first to its second position.
5. The device as defined in claim 4 wherein said means for reciprocating said rods each comprise control cylinders.
6'. The device as defined in claim 5 including stuffing boxes associated with each of said conduits for forming a gas seal with said rods and vacuum means for drawing off gas leaking past said seals.
I l 1 i i
Claims (6)
1. A device for delivering a measured charge of a flowable powder, said device comprising a storage container for said powder and a buffer vessel located downstream of said storage container and in communication therewith through a flow passage in said device, means defining first and second flow conduits in said device with said first conduit being located in communication with said buffer vessel and in axial alignment with said flow passage, said second conduit being located at an angle with respect to said first conduit, in communication therewith, and having an open discharge end; a first elongated rod slidably mounted in said flow passage for reciprocating movement therein and having one end thereof slidably received in said first conduit, said first elongated rod having a constriction formed therein intermediate its ends, and means for reciprocating said first elongated rod between first and second positions wherein, at said first position said constriction is located in said storage container to receive said measured charge of powder and said one end of the rod is located in said buffer vessel, and at said second position said constriction is located in said buffer vessel to deposit said measured powder charge therein and said one end of the rod is located in said first conduit; a second elongated rod slidably received in said second conduit, and means for reciprocating said second rod independently of said first rod between a first retracted position wherein said second conduit is opened to provide communication between the open end thereof and said first conduit and a second position wherein said second rod occupies substantially the entire second conduit to isolate said open end thereof from said first conduit.
2. The device as defined in claim 1 including means for supplying a pressurized gas to said second conduit to blow said powder supplied to said second conduit from said first conduit out of said open end before said second rod is moved from its first to its second positions.
3. The device as defined in claim 2 wherein said first and second rods fit relatively tightly in their respective conduits to advance powder along said conduits as said rods are reciprocated respectively from their first to their second positions.
4. The device as defined in claim 3 wherein said means for reciprocating said rods are sequentially operated, and said means for reciprocating said first rod moves said first rod from its first to its second position before said means for reciprocating said second rod moves said second rod from its first to its second position.
5. The device as defined in claim 4 wherein said means for reciprocatinG said rods each comprise control cylinders.
6. The device as defined in claim 5 including stuffing boxes associated with each of said conduits for forming a gas seal with said rods and vacuum means for drawing off gas leaking past said seals.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE2062513A DE2062513B2 (en) | 1970-12-18 | 1970-12-18 | Dosing device for dosing powders |
Publications (1)
Publication Number | Publication Date |
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US3750911A true US3750911A (en) | 1973-08-07 |
Family
ID=5791491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US00208839A Expired - Lifetime US3750911A (en) | 1970-12-18 | 1971-12-16 | Device for delivering a measured charge of a flowable powder |
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US (1) | US3750911A (en) |
JP (1) | JPS5423591B1 (en) |
AT (1) | AT333525B (en) |
AU (1) | AU452588B2 (en) |
BE (1) | BE776959A (en) |
BR (1) | BR7108372D0 (en) |
CA (1) | CA956280A (en) |
DE (1) | DE2062513B2 (en) |
ES (1) | ES397869A1 (en) |
FR (1) | FR2118159B1 (en) |
GB (1) | GB1370492A (en) |
IT (1) | IT944040B (en) |
NL (1) | NL7117071A (en) |
PL (1) | PL77084B1 (en) |
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ZA (1) | ZA718476B (en) |
Cited By (12)
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US3849074A (en) * | 1972-12-07 | 1974-11-19 | Du Pont | Apparatus for mixing quickly reactive materials |
US4764056A (en) * | 1985-12-19 | 1988-08-16 | Basf Aktiengesellschaft | Metering apparatus for introducing free-flowing, powdered substances in a controllable manner into spaces under pressure |
US5439138A (en) * | 1992-12-31 | 1995-08-08 | Sedepro | Dosaging device and method of dosaging |
WO1996027432A1 (en) * | 1995-03-07 | 1996-09-12 | Biomolecular Assays, Inc. | Pressure cycling reactor |
DE19714504A1 (en) * | 1997-04-08 | 1998-10-15 | Krupp Polysius Ag | Automatic powdered sample preparation adding and mixing e.g. borate stabiliser to cement |
WO2004039732A2 (en) * | 2002-10-28 | 2004-05-13 | Platinum Research Organization Llc | Process for the production of metal fluoride materials |
US20040126309A1 (en) * | 2002-10-28 | 2004-07-01 | Platinum Research Organization Llc | Method for producing metal fluoride materials |
US20080267855A1 (en) * | 2003-09-15 | 2008-10-30 | Greer F C | Process for the production of metal fluoride materials with submicron structures |
CN102152962A (en) * | 2011-01-20 | 2011-08-17 | 西北工业大学 | Flow controllable high-pressure environment powder conveying device |
CN102951448A (en) * | 2012-11-09 | 2013-03-06 | 裕东(中山)机械工程有限公司 | Device with convenience in powder delivery |
US8791056B2 (en) | 2010-06-24 | 2014-07-29 | Board Of Regents, The University Of Texas System | Alkylphosphorofluoridothioates having low wear volume and methods for synthesizing and using same |
US9725669B2 (en) | 2012-05-07 | 2017-08-08 | Board Of Regents, The University Of Texas System | Synergistic mixtures of ionic liquids with other ionic liquids and/or with ashless thiophosphates for antiwear and/or friction reduction applications |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2917189C3 (en) * | 1979-04-25 | 1982-02-18 | Wolfgang 1000 Berlin Bogen | Dosing device for dosing powders |
DE3317608C1 (en) * | 1983-05-14 | 1984-12-20 | AKA-Präzisionsdosierpumpen GmbH, 7253 Renningen | Dry apportioner |
FR2644582B1 (en) * | 1989-03-17 | 1993-07-09 | Tech Indles Manutention | MICRODOSE APPARATUS OF A DISCONTINUOUS SOLID PRODUCT |
JPH05221531A (en) * | 1992-02-14 | 1993-08-31 | Sumitomo Chem Co Ltd | Powder catalyst continuous supplying device and catalyst supplying system |
DE4443307C1 (en) * | 1994-12-06 | 1996-06-27 | Markus Schoettler | Tracer particle dosing device |
DE102013104003B3 (en) | 2013-04-19 | 2014-03-13 | Glatt Systemtechnik Gmbh | Device for introducing a defined amount of a second powder into a process container |
DE102016111214B3 (en) * | 2016-06-20 | 2017-06-29 | Ancosys Gmbh | Device for powder dosing for chemical production processes under clean room conditions, use thereof and dosing method |
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US2358956A (en) * | 1941-12-06 | 1944-09-26 | Hydraulic Dev Corp Inc | Feeding unit for injection molding machines |
US2649289A (en) * | 1952-01-17 | 1953-08-18 | Richard Roosevelt Colburn | Concrete gun |
US2847147A (en) * | 1954-10-29 | 1958-08-12 | Philips Corp | Liquid dispensing device |
US3233790A (en) * | 1963-12-30 | 1966-02-08 | Kikkoman Shoyu Kabushiki Kaish | Apparatus for airtight transfer of solid particles |
US3248118A (en) * | 1961-12-11 | 1966-04-26 | Westinghouse Electric Corp | Discharge devices fabricating apparatus and method |
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FR1481858A (en) * | 1965-06-05 | 1967-05-19 | Kalle Ag | Device for the partial evacuation of gaseous, liquid and solid substances leaving pressure vessels |
-
1970
- 1970-12-18 DE DE2062513A patent/DE2062513B2/en not_active Withdrawn
-
1971
- 1971-12-11 ES ES397869A patent/ES397869A1/en not_active Expired
- 1971-12-13 NL NL7117071A patent/NL7117071A/xx unknown
- 1971-12-16 US US00208839A patent/US3750911A/en not_active Expired - Lifetime
- 1971-12-16 AU AU36936/71A patent/AU452588B2/en not_active Expired
- 1971-12-16 PL PL1971152212A patent/PL77084B1/pl unknown
- 1971-12-16 RO RO69076A patent/RO60595A/ro unknown
- 1971-12-16 AT AT1080371A patent/AT333525B/en not_active IP Right Cessation
- 1971-12-16 IT IT32498/71A patent/IT944040B/en active
- 1971-12-17 FR FR7145459A patent/FR2118159B1/fr not_active Expired
- 1971-12-17 BR BR8372/71A patent/BR7108372D0/en unknown
- 1971-12-17 CA CA130,379A patent/CA956280A/en not_active Expired
- 1971-12-17 JP JP10194671A patent/JPS5423591B1/ja active Pending
- 1971-12-20 ZA ZA718476A patent/ZA718476B/en unknown
- 1971-12-20 BE BE776959A patent/BE776959A/en unknown
- 1971-12-20 GB GB5908571A patent/GB1370492A/en not_active Expired
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US2358956A (en) * | 1941-12-06 | 1944-09-26 | Hydraulic Dev Corp Inc | Feeding unit for injection molding machines |
US2649289A (en) * | 1952-01-17 | 1953-08-18 | Richard Roosevelt Colburn | Concrete gun |
US2847147A (en) * | 1954-10-29 | 1958-08-12 | Philips Corp | Liquid dispensing device |
US3248118A (en) * | 1961-12-11 | 1966-04-26 | Westinghouse Electric Corp | Discharge devices fabricating apparatus and method |
US3233790A (en) * | 1963-12-30 | 1966-02-08 | Kikkoman Shoyu Kabushiki Kaish | Apparatus for airtight transfer of solid particles |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3849074A (en) * | 1972-12-07 | 1974-11-19 | Du Pont | Apparatus for mixing quickly reactive materials |
US4764056A (en) * | 1985-12-19 | 1988-08-16 | Basf Aktiengesellschaft | Metering apparatus for introducing free-flowing, powdered substances in a controllable manner into spaces under pressure |
US5439138A (en) * | 1992-12-31 | 1995-08-08 | Sedepro | Dosaging device and method of dosaging |
WO1996027432A1 (en) * | 1995-03-07 | 1996-09-12 | Biomolecular Assays, Inc. | Pressure cycling reactor |
US6036923A (en) * | 1995-03-07 | 2000-03-14 | Bioseq, Inc | Pressure cycling reactor and methods of controlling reactions using pressure |
US6569672B1 (en) | 1995-03-07 | 2003-05-27 | Bbi Bioseq, Inc. | Pressure cycling reactor |
DE19714504A1 (en) * | 1997-04-08 | 1998-10-15 | Krupp Polysius Ag | Automatic powdered sample preparation adding and mixing e.g. borate stabiliser to cement |
DE19714504C2 (en) * | 1997-04-08 | 1999-09-30 | Krupp Polysius Ag | Method and device for preparing fines samples |
US20040234446A1 (en) * | 2002-10-28 | 2004-11-25 | Platinum Research Organization Ltd. | Process for the production of metal fluoride materials |
US20040126309A1 (en) * | 2002-10-28 | 2004-07-01 | Platinum Research Organization Llc | Method for producing metal fluoride materials |
WO2004039732A2 (en) * | 2002-10-28 | 2004-05-13 | Platinum Research Organization Llc | Process for the production of metal fluoride materials |
WO2004039732A3 (en) * | 2002-10-28 | 2005-03-17 | Platinum Res Organization Llc | Process for the production of metal fluoride materials |
US7261872B2 (en) | 2002-10-28 | 2007-08-28 | Platinum Intellectual Property, Lp | Method for producing metal fluoride materials |
US20080267855A1 (en) * | 2003-09-15 | 2008-10-30 | Greer F C | Process for the production of metal fluoride materials with submicron structures |
US8791056B2 (en) | 2010-06-24 | 2014-07-29 | Board Of Regents, The University Of Texas System | Alkylphosphorofluoridothioates having low wear volume and methods for synthesizing and using same |
CN102152962A (en) * | 2011-01-20 | 2011-08-17 | 西北工业大学 | Flow controllable high-pressure environment powder conveying device |
CN102152962B (en) * | 2011-01-20 | 2012-10-10 | 西北工业大学 | Flow controllable high-pressure environment powder conveying device |
US9725669B2 (en) | 2012-05-07 | 2017-08-08 | Board Of Regents, The University Of Texas System | Synergistic mixtures of ionic liquids with other ionic liquids and/or with ashless thiophosphates for antiwear and/or friction reduction applications |
CN102951448A (en) * | 2012-11-09 | 2013-03-06 | 裕东(中山)机械工程有限公司 | Device with convenience in powder delivery |
CN102951448B (en) * | 2012-11-09 | 2015-04-22 | 裕东(中山)机械工程有限公司 | Device with convenience in powder delivery |
Also Published As
Publication number | Publication date |
---|---|
ZA718476B (en) | 1972-09-27 |
AU452588B2 (en) | 1974-09-05 |
GB1370492A (en) | 1974-10-16 |
ATA1080371A (en) | 1976-03-15 |
PL77084B1 (en) | 1975-02-28 |
ES397869A1 (en) | 1975-04-16 |
DE2062513A1 (en) | 1972-07-13 |
AU3693671A (en) | 1973-06-21 |
NL7117071A (en) | 1972-06-20 |
RO60595A (en) | 1976-08-15 |
FR2118159A1 (en) | 1972-07-28 |
FR2118159B1 (en) | 1976-02-13 |
DE2062513B2 (en) | 1979-02-15 |
BE776959A (en) | 1972-06-20 |
IT944040B (en) | 1973-04-20 |
AT333525B (en) | 1976-11-25 |
CA956280A (en) | 1974-10-15 |
BR7108372D0 (en) | 1973-05-03 |
JPS5423591B1 (en) | 1979-08-15 |
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