US1777893A - Mixing apparatus - Google Patents

Description

Oct. 7, 1930. J. PETERS 1,777,893

' MIXING APPARATUS 7 Filed April 12, 1929 1 g I .9 15 74 I Patented Oct. 7, 1930 ant/ins reruns, or ROSYLAN HEIGHTS, ivnw Yon-mnssrelvon Pro THE Tumamxea CORPORATION, on NEW YORK, 1v. Y, A ioonronlirron or N W YORK i MIxIivG APPARATUS Application filed April 12,

. 1 My invention relates to mixing apparatus and especlally to new and lmproved means for supporting mixing or deflecting struc- 1 tures or elements thereof, 1n a llned tank and i 6 especially a tank having a vitreous lining, in such manner thatcracking of the lining is prevented or avoided. j

Heretofore it has been a difiicultmatter to properly mount mixing apparatus-and espe 10 cially the deflector structure thereof ina lined tank {of character referred to, without causing cracking, or otherwise injuringthe vitreous coating of the tank wall." The com mon practise has been to bolt the deflector elements directly to the tank wall with metal portions of the deflector" indirect contact with-the vitreousor analogou s lining, with theresult that the lining is-usually cracked and portions displaced bythe mere mechanical pressure or movement of the deflector 1 parts caused by vibration, expansion, etc.

Since lined tanks are employed in order to keep certain classes of materials from contact with the metal of the tank, upon which such materials have corrosive or other injurious action, such injury to the protective lining is of course very objectionable.

j I avoidthese difliculties or disadvantages.

l by providing mounting means, or cooperating arrangements or structures of thegdeflector and the connecting or 'supporti'ngmeans, of such character that' cracking or other injury to the vitreous or analogous lining is "entirely prevented. As more particularly stated, I support the deflector in suchmanner that its parts are not in actual contact with the lining, and the supportingdevices engage the liningfonly 'i n small zones or-' areas and with interposed cushioning means I it 40 so that cracking or other-injury to the lining t is entirely obviated. 1

The characteristics and advantages of the invention are further sufliciently explained in connection with the following detail description of the accompanying drawings, which show representative embodiments, lAtter consideringthese examples, skilledf :opersonswill understand that'many variations 1. maybema'de without departing from the principles disclosed, and: I contemplate the" 1929. Serial in. 354,497.

employment of any structures that are properly within the'sco'pe of-the appended claims; Inthedrawin'gw j Fig. 1 is a top plan of one typical deflector,

a segmentof a tank bottonntand connecting or supporting means embodying the invention in one form. i

Fig. 2 is a section at 22, 1. .Fig.3 is a section at 83,Fig. 1.

The deflector structure is here shown as secured torthe tank bottom 1', although the structural principles disclosed may be adapted to the supportof thedeflector from the tank sidewall. w i I j a The tank wall l has a lining 2, of enamel,

usually a vitreous, fused onenamehiof moderate thickness; The-deflector in the'form shown is made in arcuate segmentsl3,.each including a plurality of vertical deflecting blades 4, and intermediate, relatively approX-' imatelyhorizontal plates or webs 5 and 6,

alternate ones of these being arranged at difierent angles, or inclinations to the horizontal; thuswebs-5 "are nearly horizontal or parallel to the tank-bottom, and webs 6 are inclined outwardly-upward. Usually the blades and webs are cast integrally. It has usually been the practice to bolt these deflectors directlyto the tank bottom, so that the lower ends of blades 4, were indirectcontact witlr the enamel lining 2. The blade ends, of moderatearea, and with sharp edges or n corners, will sooner orlater, by mere mechan- .lCZIl pressure, or s by expanslon movements, vlbration, etc, crack, chipior .fi'akeofi the.

enamel,:thus destroying the protective effect thereof. i j p I provide for the support of the deflector structure entirely free from contact with the tank wall or lining, and especially prevent or avoid any direct contact of the blade bottoms with the lining, and also. practically isolate the deflector from the tankbottom,

with respect to vibration, etc, as follows:

The deflector is suitably connected to struts,

tothe tankwall,;or bottom, in suchmanner that the blade. endsor bottoms 8 are spaced or bolts7, and the bolts are in turn connected fording ample clearance, and preventing contact even under extreme conditions of expansion, warpage, etc. I also preferably provide isolating or cushioning means, such as wash- 1 ers 9, interposed between the lining and bolt fastening means such as nuts 10, so that the bolts-may be firmly seated or secured without direct contact of any metal part (such as the nut) with the lining. These isolating washers are of stout, but compressible, and more-or less resilient material, such as -as bestos; they tend to cushion and isolate the entire deflector structure from the tank bot tom, and also provide areas of supporting contact which are relatively small, and impose little or no distortion strain uponthe tank, linin g, or defiectorit'self.

hen the deflector is of segmental form as shown, the nearly horizontalconnecting :plate or web formations .5 are arranged at ends of the segments; that is, a web portion is provided at each end ofeach segment, and the adjacent or abutting'ends of'these portions provide a complete flow conducting plate-or web between two adjacent vertical blades 4:. This arrangement provides for easy connection-or adjacent segments, as by copper (orother metal) plates-or strips 11, bolted to the web sections 5 at 12. (Fig '1.)

The bolts are-screwedintothreaded holes 13 in the tank wall,and preferably lugs or bosses 14 are formed or secured to'the outside of the wall (as by welding) to provide bolt-holes of :proper length, these holes being closedat the bottom, as at 15. The nut is screwed down'on each bolt against the cushioning washer 9, or preferably a metal washer 16 is interposed between the-nut and the "asbestos washer. A spacing sleeve 17 or 17 is then placed'on each bolt, the sleeve being dimensioned tosupport the deflector at :proper height, with blade ends 8 spaced from the tanlrbottom asabove'noted. The upper, threaded ends 19 of the bolts pass through holes in webs 5 or 6, and the spacing sleeves engage directly or indirectly with the underfaces of the webs. In the case of the bolts and spacers which'cooperate with webs 5 the bolt holes are formed in connecting strips 11, and the ends of web-segments 5 are notchedasat 20 (Fig. '1) toaccommodate the bolts. Spacing sleeves l7 engage against the under connectingstrips 11, and nuts 22 are screwed down'on the upper ends of the bolts against-upper strips ll'to clamp the deflector structure in position.

Spacer-sleeves 17 for the intermediate webs 6 :arebeveled'at the :top to engage'the angular web face, and short spacers 23 are placed-about the'upper ends of the'bolts, their lower ends being beveled to conform to the upper web surface; :and nuts 22 are applied to complete the connection.

In some casesthe intermediate connections may lbe omitted; also the :number 20f blades in each deflector section may vary, and other changes made, as will be evident to skilled persons, and as comprehended in the claims.

I claim:

1. In combination with a tank wall and a mixer structure, bolts secured in the wall and supporting the mixer structure free'from the direct contact with the wall, and cushioning washers operatively interposed between the bolts and the wall.

2. In combination with 'an enamel-lined tank wall, a mixer structure, and bolts secured 'in'the wall and supporting the mixer structure .free from the direct contact with the wall, nuts on the'bolts, and resilient Washers under the nuts and engaging the enamel lining of the wall surface.

3. In combination witha tank wall, a mixer structure,andboltssecured in the wall and supporting the mixer structure free from the direct contact with thewall, nuts on the bolts, resilient washers under the nuts and engagin g theenamel lining wall surface and-spacer sleeves about the bolts and engaging parts ofthe mixer structure.

4:. In combination with a tank wall, a=mixer structure, and bolts secured in the wall and supporting the mixer structure free from the A direct contactwith the wall, nutsonthe bolts,

resilient washers under the nuts and-engaging the enamel lining wall surface, spacer sleeves aboutthe bolts and engaging parts of the mixer structure, and nuts on upper parts of the bolts clamping the mixer structure in position.

.5. Incombination with a'tank Wall having an enamel lining, a mixer structure, bolts secured in the wall and supporting the mixer structure free fromdire'ct contact with the wall lining.

6. In combination with a tank bottom wall having an enamel lining, a mixer structure, bolts secured in the walland supporting the mixer structure free fromdirect contact with the wall lining.

7. In combination with a tankiwall having an enamel lining, a :mixer structure, bolts secured in the wall andsupporting the mixer structure free from direct'contact with the wall lining, nuts on the bolts, and resilient cushioning washers under the nutsandengaging the enamel lining.

8. In combination with a tank wall'having an enamel lining, a mixer s'tructure,'bolts secured in the :wall and supporting the mixer structure free from direct contact with the wall lining nuts onthe bolts, resilient cushioning washers under the nuts and-engaging the enamel lining, spacer sleeves about the boltsand engaging parts ofithe mrxer structure. I

9. In COIIlblHZLtlOIlWlth aztankbottom wall,

a deflector structure including vertical'blades and connecting-webs,:and'bolts inserted'in the wall, anclcooperating .wit-hth'e Websto support the deflector with the lower blade ends spaced from the tank wall surface, nuts on the bolts, and cushioning washers clamped be tween the nuts and the wall surface. 10. In combination with a tank wall, a/deflector structure including vertical blades and connecting webs, and bolts inserted in the wall and cooperating with the webs to support the deflector with the lower blade ends spaced from the tank wall surface, nuts on the bolts, and cushioning washers clampedbetween the nuts and the wall surface, spacer sleeves on the bolt-s engaging the webs, and nuts on the upper ends of the bolts clamping the wens against the spacers. i

11. In combination with a tank wall, a de- Hector structure including vertical blades and connecting webs, and bolts inserted in the wall, and cooperating with the webs to support the deflector with the lower blade ends spaced from the tank wall surface, nuts on i the bolts, and cushioning washers clampedbetween the nuts and the wall surface, spacer sleeves on the bolts engaging the webs, and

' nuts on the upper ends of the bolts clamping the webs against the spacers, and other spacers 7 between the upper nuts and webs.

12. In combination with a tank wall, a segmental deflector structure including vertical blades and connecting webs, and bolts inserted in the wall, and cooperating with the webs to support the deflector with the lower blade ends spaced from the tank wall surface, nuts on the bolts, and cushioning washers clamped between the nuts and the wall surface.

13. In combination with a tank wall, a segmental deflector 'structure including vertical blades and connecting webs, and bolts inserted in the wall, and cooperating with the webs to support the deflector with the-lower blade ends spaced from the tank wall surface, nuts on the bolts, and cushioning washers clamped between the nuts and the wall surface, spacer sleeves on thebolts engaging the webs, and nuts on the upper ends of the bolts clamping the webs against the spacers.

14. In combination with a tank wall, a segmental deflector structure including vertical blades and connecting webs, and bolts in serted in the wall and cooperatingwith the webs to support the deflector with thelower blade ends spaced from the tank wall surface, nuts on the bolts, cushioning washers clamped between the nuts, and the wall surface, spacer sleeves on the bolts engaging the webs, nuts on the upper ends of thebolts clamping the webs againstthe spacers, and strips connecting the deflector segments together, certain of the supporting bolts passing through said strips. r

In testimony whereof I afiix my signature.

JAMES PETERS.

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