US1000629A

US1000629A - Reversing-valve.

Info

Publication number: US1000629A
Authority: US
Inventors: Hermann E Schild
Original assignee: S R SMYTHE Co
Current assignee: S R SMYTHE Co
Priority date: 1911-04-21
Filing date: 1911-04-21
Publication date: 1911-08-15
Anticipated expiration: 1928-08-15

Description

H. E. SGHILD. REVERSING VALVE.

APPLICATION FILED 11211.21, 1911.

1,000,629. Patented Aug. 15, 1911.

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WITNESSES: I I 1 INVENTOR.

W a; @1 2M1 vw M22 4 1/4. I A! ATTORNEY.

COLUMBIA PLANOGRAPH co., WASHINGTON, 1) c.

H. E. SGHILD.

' REVERSING VALVE.

APPLICATION FILED APB.21, 1911.

1,000,629, Patented Aug. 15, 1911.

3 SHEETS-SHEET Z.

WITNESSES: INVENTOR ZAWMM. ,4

ATTORNEY H. E. SGHILD.

BEVERSING VALVE. APPLICATION FILED 1:11.21, 1911.

Patented Aug. 15, 1911.

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IIVVENTOR. J4 8 PM BY a /v. M x

I I I II- 70 FFTQ.

HERMANN E. SGHILD, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO THE S. R. SMYTI-IE COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF WEST VIRGINIA.

REVERSING-VALVE.

To all whom it may concern:

Be it known that I, HERMANN E. SOHILD, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Reversing Valves, of which the following is a specification.

My invention relates to gas reversing valves designed particularly for use with regenerative furnaces, and is an improvement on the reversing valve described and claimed in Letters Patent No. 804,505 granted. to me November 14, 1905.

The object of the present invention is to bring all the elements of a reversing valve into a unit, whereby the various connections can be accomplished by the rotation of a single structure, eflecting a considerable saving in space and cost.

Referring to the accompanying drawings, Figure 1 is a plan of my improved reversing valve with the valve f and the valve-chamber F removed. Fig. 2 is a horizontal section on the line IIII of Figs. 3 and 4.

Figs. 3 and 4 are vertical sections on the lines III-III and IVIV, respectively, of Figs. 1 and 2, Fig. 4 showing the air-valve mechanism in end elevation. Fig. 5 is a plan of the base-plate, and the passages beneath the level thereof. Fig. 6 is a vertical section on the line VIVI, Fig. 5.

A horizontal base-plate A of iron or steel is mounted on a suitable foundation or substructure B and has therein the central circular port or opening a surrounded by the four ports or openings (4, a a a equally distant from the opening a. The opening a is diametrically opposite the opening (1*, and the opening a is diametrically opposite the opening a The openings (1 and a are sixty degrees apart, as also are the open-, ings a and a leaving one hundred and twenty degrees between the openings a and a and between the openings a and a The sub-structure B has the central stack flue 6 leading from the opening a downwardly and then horizontally, and the four flues b, 6 b 6* leading respectively downwardly and then horizontally from the openings a, a a a The circular horizontal water-pan or water-cooled valve-plate G is seated on the base-plate A and is in axial alinement with the center of the opening I). The pan G Specification of Letters Patent.

Application filed April 21, 1911.

Patented Aug. 15, 1911. Serial No. 622,479.

has an annular depending hub c" fitting in an annular depression in the plate A to prevent the pan from sliding out of said axial alinement. The pan C has five upwardly flanged openings 0, 0, c c 0 0 0 arranged sixty degrees apart, the opening 0 permanently registering with the opening a, and four of the openings 0, c c 0 0 0 registering at a time with the openings a, a a a as will be explained presently. The pan C has an outer upstanding flange 0 which with the flanges aforesaid form a water pan to keep the pan and adjacent parts from burning out.

The pan C has therein the short radial ribs 0 extending inwardly from the outer flange c and upwardly slightly from the bottom of the pan. On these ribs rests the lower edge of the hood D, which is, in general, dome-shaped, its lower edge resting beneath the surface of the water in the pan to form a gas-seal. The hood has the opening 03 centrally over the opening a; the openings d and 0Z in the form of tubes surrounding the flanges of the openings 0 and 0 respectively, and having their inner portions resting on the ribs 0 below the water in the pan C. The upper ends of the tubes (Z and 65 open into the external atmosphere. The hood D has another opening or tubed", having its lower end surrounding the flange of the opening 0 and resting on the ribs 0 and 0 below the water level in the pan C.

On the hood D, I place the box E having a central bottom opening 6 registering with the opening d; an opening 6 registering with the upper end of the tubular opening 6Z4, and a central upper opening 6 in axial alinement with the openings a, o, o, and d. Normally the opening 6 is closed by the cover 01 The opening 6 is surrounded by two concentric flanges forming a watertrough, into which the lower edge of the flange f of the gas-chamber F extends to form a gas-seal. The bottom plate f of the chamber F is provided with the valve seat or opening f centrally over the opening 6.

f is a valve suspended from the reciprocable stem 7", by which the flow of gas through the opening f may be regulated or stopped. The chamber F is stationary and rests on the beams f supported on the posts f.

A horizontal rock-shaft g has bearings in the ears f on the bottom f and is provided with a central arm 9, to which is secured the chain 9 for raising, lowering, and holding the said arm. The ends of the shaft 9 are provided with the arms 9 and 9 connected to the valves or covers g and g? by the links 9 The cover 9 is centrally over the opening (Z when the parts are as shown on the drawing; and the cover 9 is centrally over the opening 6Z5 when the pan O and parts supported thereby have been rotated sixty degrees in the direction indicated by the arrow h, Figs. 1 and 2. The pan C may be rotated by various means but I have shown the worm I gearing with teeth on the periphery of the pan. The worm is mounted on the shaft 2' driven by any suitable mechanism.

The parts being as shown on the drawings, gas passes from the chamber F, connected to any suitable source of gas-supply, through the valve opening f, the opening 0, the gasbox E, the openings 6 6Z a and a to the flue 79 which, we may assume, conducts the gas to the gas side of a hot regenerator chamber, whence it passes to a furnace, in which it is burned with air which, flowing through the openings 62?, c and a passes into the flue Z2 leading to the air side of the regenerator chamber and thence, it is assumed, to the furnace. The waste gases pass from the furnace through another set of regenerators from which the gases return to the hood D in two paths, one path being through the flue b, the openings a and 0, and the other path being through the flue b and the openings a and 0 From the hood D the waste gases pass to the stack-flue through the openings 0 and a. The elongated arrows on Figs. 1-4L show the direction of the air, gas, and waste. gases.

When it is desired to reverse the flow of the air and gases, the shaft i is actuated to rotate the pan C and parts supported thereby sixty degrees with the arrow h, whereupon the opening 0 registers with the opening (1. the opening 0 with the opening a, the opening 0 with the opening 01?, the opening 0 with the opening a, and when the opening 0 passes on to a dead or closed space on the plate A between the openings a and a and the opening 0 passes on to a dead or closed space on the plate A between the openings a and a the air tube d passes underneath the cover g and the air-tube d passes from under the cover It will be seen that the gas now passes as before through the opening 0 from which it enters the flue b and that the air passes down the air-tube (Z5 and through the openings 0 into the flue b. The air and gas after being burned in the furnace return to the dome D as waste products by way of the flues b and 5 From the dome the waste gases enter the stack-opening c and the stack-flue b. By returning the parts to the positions shown on the drawings the gases will be again reversed soas to assume their former courses. 9 9 may, by the chain 9 be adjusted up or down to regulate the supply of air.

In case it is desired to heat the stack on starting the furnace and regenerato-rs, the cover d may be removed from the opening 6 by removing the cover 6 from the end of the box E and insertinga suitable tool. The gas can then pass directly from the box E into the hood D and thence into the stack-flue b where it is burned to preheat the stack.

The gas passages c d 6*, e, f, register with the flue b or b the air-tube (Z registers with the flue 6 or the air-tube d registers with the flue Z2; and the stack-flue communicates with the flues b and 6 or the flues b and b the flues bb*, when acting as waste-flues, communicating with vthe. chamber within the hood or dome D.

I claim- 1. In a reversing valve, a rotary valve-.

plate having a central stack-port and a circular series of six ports arranged 60 apart around the stack port, a hood connected gastight to the valveplate and inclosing the stack-port and the alternatev ports of the said six ports, a gas-supply passage connected to one of the remaining ports in the valve-plate, and an air-supply tube connected to each of the two remaining ports in the valve plate, a stack registering with the stack port, a pair of convertible air and waste flues 60 apart, and a pair of convert- The valves or covers ible gas and waste flues 60 apart and diametrically opposite the air and waste flues, one of the air-ports and the intermediate waste-port registering with the air and waste fines, and the gas passage and one of the remaining waste-ports registering with the gas and waste flues, and means for rotating the valve-plate.

2. In a reversing valve, a stack flue, a

pair of convertible air and waste fines and a pair of convertible gas and waste flues arranged around the stack flue, a rotary valve-plate having a central waste-port, a pair of air ports, a gas-port, and waste port-s between the air-ports, and between each airport and the gas-port, the ports being spaced so that, when one of the airports registers with one of the air and waste flues, the intermediate waste-port registers with the remaining air and waste flue, and, when the gas-port registers with one of the gas and waste flues, one of the waste-ports at either side of the gas-port registers with the remaining gas and waste flue, a hood connected gas-tight to the valve-plate and inclosing the waste-ports and the stack-port,

a gas-supply passage connected to the gasport, an air-tube connected to each air-port, and means for rotating the valve-plate.

3. In a reversing valve, a pair of convertible air and waste fines and a pair of convertible gas and waste fines, a stack flue centrally arranged with respect to the said pair of fines, a valve-plate having rotation transversely of said fines a hood sealed to the valve-plate and covering the stack flue, and means to oscillate the valve-plate to two positions the hood and valve-plate having passages disposed to admit air alternately to the said air-fines at the two said positions of the valve-plate, the valve-plate having openings disposed so as to lead the waste-gases alternately from the waste-gas fines to the interior of the hood at the two said positions of the valve-plate, and the valve-plate and hood having a gas inlet disposed so as to admit gas alternately to the gas fines at the two said positions of the valve-plate.

Signed at Pittsburg, Pa., this 19th day of April, A. D. 1911.

HERMANN E. SCHILD.

Witnesses:

ALICE E. DUFF, F. N. BARBER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.