US2474695A

US2474695A - Collecting and separating apparatus

Info

Publication number: US2474695A
Application number: US656737A
Authority: US
Inventors: Claude B Schneible; Alvin S Lundy
Original assignee: Schneible Co
Current assignee: Schneible Co
Priority date: 1938-11-05
Filing date: 1946-03-23
Publication date: 1949-06-28
Anticipated expiration: 1966-06-28

Description

June 28, 1949. c. B. S CHNEIBLE ET AL COLLECTING AND SEPARATING APPARATUS Filed March 23, 1946 Patented June 28, 1949 1 UNITED STATES PATENT 0F F 1 CE Claude 1B- schneibl and Alvin's. Lundy, De roi Mich; said Lundy .assignor do i said Schneible Application 'ltlaroh 23, 1346, Serial No, 656,737

11 Claims.

sl This invention relates to collecting and separating apparatus. It is particularly useful in the separation of particles from -a fluid medium, in the removing of heavier fluids from lighter fluids, and in the removal of such materials as dust,

sand partioleschips from castings, and other particlesproduced in foundries, mills, etc.

An object of the invention is to provide means for removing particles or heavier fluid portions from a fluid stream moving at high velocity through -a duct. Yet another object is to provide *ina structure for the removal of particles and heavy fluid portions carried in a fiuid'body movat relatively high velocity, means for reducing friction-a1 resistance in the separating area "and for reducing the back pressure incident to theoperring being free in the separation .area.

Yet another object is to provide in combination Mth 'a closed separation chamber, an angular yseparation duct having an opening in the duct at the outer "Wall of the bend, means for @closwing off part of the separatin area :to reduce frictional resistance and to bring about a more efficient removal of particles or heavy fluid por- Etions." "Yet another object is to provide a high velocity duct with an elbow portion communioating through an opening in .the heel with a closed. chamber, means being "provided ,for closing on a part of the opening in the separating area for reducin frictional resistance ained for increasing the refiectiveness of .the separating means. Other specific objects and advantages :will appear :as the specification proceeds.

"The invention is illustrated, .in a preierned embodiment, iby the accompanying drawing, in which- Figure is a transverse sectional yieyv of tone form of apparatus embodying our invention; "Rig.

"2, .a broken idetail sectional view, the section being taken as Jindicatedat line 2 of Figs. 11; .ifiiig. 3, a View similar to Fig. :2,-but showing a slight varaiation do the shape .of the rods employed; ,Rig.

:4. :aview similar to Fig. 2, but showing-a modiified iorm of ithe invention; and, l ti va view si lar tofEig. 32, but showing :a :further modified form 'of the invention.

In :.1;he illustration given, 110 designates a casing which provides a separation chamber l. ache casing may be .of any suitable shape or iconsmmction as, ioriexample, it :may be of the shape indicated in 513116 co-pendin application {of Qlaude B. .Schneib1e,= Serial No. 2656;736,rfiled Match .23,

5.14146, 5501 :Qcliecting and separating apparatus. is sumcient that the casing d 0 nnovide aclose 1; chamber of {any desired shapeiwhichiwillzseme it collect the particles .or materials discharged thereinto. "The casing in is provided with two openings 12 and 1:3 which may *be of rectangular shape or any other suitable shape. 5 A high velocity duct 14, having an inlet portion 1'5 and an outlet portion J6 and a bend or elbow portionH, extends through the chamber H. Preferably, the ends of the duct 14 are provided with flanges which vare welded to the casing Ml. Any suitable means for producing a high velocity flow .of fluid through the duct M may be employed. For example, a fan (not shown) -m-ay berconnected to a duct communicating with the ioutletiportion 1 6 of duct 1.4.

The elbow H of duct I4 has its outer heel portion cut away to provide an opening and the opening is partially closed by a plurality of rods "ILB which extend lon itudinally of the h el or elbows. The rods 11-3 may extend entirely across the openin or th y may be welded atone e to the edge J19 of the duct Wall M and th 0P- :posite end ,of the rods l8 may terminate slightly sh r of th op s t en of he casing wall 14, gleaming ,a ap 21) between the rod :lfl nd the @adiacent wall of the duct it. As shown mor iclearly i 2, t s it a spaced apart provide therebetween .air flow passagesrll. Ilia-air passage adjacent each row of mods 11:8 iis preferably rectangular in cross sec- :tion and oi v ry l tt d pth so that the p r ticles within the ar a can be read re v zth nouezhzthersnaces 21 betwe n ro s L8,.

If desired, :the elbow ,I I may be provided with a single series of rods extending across a single opening the heel portion of the duct 4 4. Howoiter, desi d, a *nlurah y o pa t ti 22 m y e supported :within the duct M so as to di d th interior of the duct into a p urality of s parate narrow passages, preferably of rectangu- 40 Ila! cross section. In the illustration given, each partition I2? is :folded upon itself to provide ,an ngr wall 123 and an outer wall 24. The outer 1 24 is imperfor ite and provides between it .nd wall 23 a dischar e c amber 25 w ch com- ;.2- The :mds :18 {may extend entirely across the opening ormay terminate, leaving a shorft gap 25D bfifiwfifi 1 16 rods and the adjacent partition wall H. iIihe gap 2." is of value where stringy maierialensaaes athe rods and m ves lon tud M :nfi ly thereo ufiuchma-torial is permitted to e for straightening the air currents. ducing turbulence and straightening the an curcape into the chamber 25 or into the chamber I l by means of the gaps 20.

Instead of employing circular rods I8, as illustrated in Fig. 2, the rods may be given the tear-drop design or shape illustrated in Fig. 3. Such rods l8a of the tear-drop design, as illustrated in Fig. 3, provide effective flow assages 26 therebetween through which the particles and heavier fluid may escape while, at the same time, reducing the inner surface that might engage the particles and cause them to rebound into the passage. It will be noted that the passage 26, as well as passage 2i, provides, in effect, a Venturi passage which is highly effective in the removal of particles from the passage while retaining the lighter portion of the fluid withirf the passage.

In the modification illustrated in Fig, 4, we provide the rods 27 with inwardly extending webs 28 which divide, the passage into compartments By'thus rerents, we find that highly effective separation is brought about.

In the modification illustrated in Fig. 5, the rods 29 are arranged in staggered relation with the rods 38, and the rods 3i) are provided with inwardly extending partition walls 31 serving to straighten partially the air currents.

It will be understood'that a great variety of 7' rods and fins or partition walls may be employed for enhancingbr increasing the separation efiect and to meet the requirements of difierent types of material which are to be handled.

Operation In the operation of the structure, fluid is drawn at high velocity through the duct 14 and discharged through the outlet lb of the duct. The change of direction of the air current causes the heavy particles to continue toward the cut-away heel portions and here the rods are effective in the separation of the particles or heavier fluid while, at the same time, greatly reducing the frictional resistance or back pressure which would otherwise be present. Further, the rods, etc., are effective in maintaining particles, etc., which have already escaped in the chamber it from finding their way back into the duct M. The vanes or partitions 3| or 28 which terminate a short distance from the wall 24 are effective in reducing turbulence and straightening the air currents so that the heavier particles or fluid portions are thrown outwardly and discharged in the chamber H while the lighter portions of the fluid pass readily on and out through the opening 16,

We have found that excellent results are produced where the cut away heel portion or separating area is reduced by 50% or more through the use of the rods, etc. The multiple rod bank illustrated in Fig. is highly effective for the handling of certain materials where it is desired to retain the mass of the lighter fluid within the duct and to obtain a relatively fine separation of the particles or heavier fluid carried within the duct. The vanes or partition walls not only are effective in straightening air currents but also serve as guides or deflectors which tend to bring the heavy particles toward the discharge openings and to insure their removal from the passage.

In referring to the separation chamber as a closed or air-tight chamber, it will be understood that the terms are used in their broad meaning and that the separation chamber may, in fact,

communicate with another chamber or passage which in turn is closed by virtue of its being connected with a closed system. It will also be understood that the separation passages herein described as a multiple arrangement may, ifgdesired, be a single passage or single conduit having a single heel portion cut away and provided with rods and vanes of the type herein illustrated or other suitable types. The passages are preferably of thin rectangular cross section and the bend or elbow may extend in any direction including the horizontal, vertical and other angular positions. The rods which are shown running longitudinally of the opening may, if desired, be inclined to run in an oblique or other desired angular positions, such positionsbeing herein referred to by the term longitudinal.

While inthe foregoing description, we have set forth in substantial detail structures with which the invention may be employed, it will be understood that such details of the structures may be varied widely'by those skilled in the art without departing from the spirit of our invention.

We claim:

1'. In combination, a casingproviding a closed separation chamber, a high velocity fluid duct having an elbow bend and with a cut away heel portion communicating with said chamber, and a plurality of curvilinear rods extending longitudinally of said opening in laterally-spaced-apart relation and providing spaced passages extending longitudinally ofsaid elbow portion between said duct and chamber,

'2. In combination, a casing providing a closed separation chamber, a high velocity fluid duct having an elbow bend and with a cut away heel portion communicating with said chamber, and a plurality of curvilinear rods extending longitudinally of said opening in laterally-spaced-apart relation and providing spaced passages extending longitudinally of said elbow portion between said duct and chamber, said rods being of generally round cross section.

3. In combination, a casing providing a closed separation chamber, a high velocity fluid duct having an elbow bend and with a cut away heel portion communicating with said chamber, and a plurality of curvilinear vanes extending longitudinally of said duct in laterally spaced-apart relation adjacent said opening.

4. In combination, a casing providing a. closed separation chamber, a high velocity fluid duct having an elbow bend and with a cut away heel portion communicating with said chamber, a plurality of curvilinear rods extendin longitudinally of said opening in laterally spaced-apart relation, and a plurality of vanes leading from said rods inwardly into said duct.

5. In combination, a casing providing a closed separation chamber, a high velocity fluid duct having an elbow bend and with a cut away heel portion communicating with said chamber, a plurality of curvilinear rods extending longitudinally of said opening in laterally spaced-apart relation, and a plurality of vanes extending inwardly from said rods and across said duct to divide said duct into a plurality of compartments adjacent said heel.

6. In combination, a casing providing a closed separation chamber, a high velocity fluid duct having an elbow bend and with a cut away heel portion communicating with said chamber, and a. plurality of curvilinear rods arranged in a plurality of series extending in staggered relation longitudinally of said opening and providing spaced tortuous passages between said duct and said chamber.

7. In combination, a casing providing a closed separation chamber, a high velocity fluid duct having an elbow bend and with a cut away heel portion communicating with said chamber, and a plurality of curvilinear rods arranged in a plurality of series extending in staggered relation longitudinally of said opening and providing spaced tortuous passages between said duct and said chamber, certain of said rods being provided with inwardly extending vanes entering said duct.

8. In combination, a casing providing a separation chamber, a fluid duct having an elbow bend provided with a heel portion that is cut away to provide an opening substantially equal to the length of the elbow communicating with said chamber, and a plurality of rods circular in cross-section and curved throughout their length extending longitudinally of said opening in laterally spaced-apart relation to provide longitudinal passages extending substantially thelength of the elbow bend, said rods proving Venturi passages between them.

9. In combination, a casing providing a closed separation chamber, a fluid duct having an elbow bend and with a cut-away heel portion communicating with said chamber, and a plurality of curvilinear rods extending longitudinally of said opening in laterally spaced-apart relation and providing spaced passages extending longitudinally of said elbow portion, said rods being of teardrop shape in cross section.

10. In combination, a casing providing a separation chamber, a fluid duct having an elbow which is of elongated rectangular shape in cross section and with a cut-away heel portion communicating with said chamber, and a plurality of spaced members fixed to said duct at one end of said heel portion and extending across said opening to provide spaced passages between said duct and chamber, said members having free ends terminating short of the other end of the opening to provide a gap between said free ends and the duct casing at said other end of the opening.

11. In combination, a casing providing a separation chamber, a casing providing a fluid duct having an elbow with a cut-away heel portion communicating with said chamber, and a plurality of rods fixed to said duct casing at one end of the heel opening and extending longitudinally across said opening, said rods having free ends terminating short of the other end of said opening to provide a gap between said free ends and the duct casing at said other end of the opening.

CLAUDE B. SCHNEIBLE. ALVIN S. LUNDY.

REFERENCES CITED The following referenlces are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 714,381 Koelkebeck Nov. 25, 1902 1,807,983 Hegan June 2, 1931 2,001,851 Riley May 21, 1935 2,221,385 Rogers Nov. 12, 1940 FOREIGN PATENTS Number Country Date 22,632 Great Britain Oct. 20, 1904 12,287 Great Birtain May 25, 1909 409,988 Great Britain May 10, 1934 48,993 France Oct. 5, 1938 (Addition to No. 819,621)

853,377 France Mar. 18, 1940 Certificate of Correction Patent No. 2,474,695.

CLAUDE B. SOHNEIBLE ET AL.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

Column 5, line 24, claim 8, for the Word "proving read providing;

and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent OfiEice.

Signed and sealed this 22nd day of November, A. D. 1949.

June 28, 1949.

THOMAS F. MURPHY,

Assistant Commissioner of Patents.