US1440595A - Ejector - Google Patents

Description

5 Jan. 2, 1923.

I 1,440,595. 1. W. GRANTLAND.

EJECTOR.

FILED FEB. 27. 1919.

I, null-11m j Patented Jan. 2, l923,

JOHN W. GRANTLAND, 0F CINCINNATI, OHIO.

EJECTOR.

To all whom it may concern:

Be it known that 1, JOHN W. GRANTLAND, a citizen of the United States, and residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Ejector-s, of which the following specification is a full disclosure.

This invention relates to an ejector and more particularly to a device of this type as a part of a steam locomotive engine equipment serving as a sprinkler hose for sprinkling fuel and for other purposes The principle employed, utilizes the velocity of a steam jet to propel a body of water through a combining tube, to create a suction against the water supply and impart velocity to the delivered water.

lhe object of the invention is to provice an ejector having a pair of normally closed independent water controlling check valves, one serving as a back pressure check valve and the other as a water supply valve automatically operated by the pressure of the steam line.

Another object is toprovide an automatic steam operated water supply valve actuator.

A further object is to provide removable strainers in the water and steam conduits to obviate a fouling of" the valves A further object is to provioe means for draining the ejector. p c

The features of the invention will be more fully set forth in the description of the accompanying drawings forming a part i of this specification, in which: I

Fig 1 is avertical section of the ejector arranged for installation below the supy level asa non-lifter.

Fig 2 1s detail section on line 2, 2, Jig, 1;

Fig. is a. detail section of a form of combining tube, interchangeable with that shown in 1, when the ejector installed above the supply water level as alitter.

Referring to the body portion 10 is divided to form a water supply conduit or chamber 11, a valve chamber 12,21 suction chamber 13 and, a steamfi'conduit 14; the valve chamber l2 cjonneoting the supply and suction chambers through valve controlled ports. A suitable unioncoupling 15 is provided for connecting with the water tank of the engine-tender. The lower wall of the valve chamber 12 is formed with ports 16,

'17, defining; valve seats 18, 19, These ports are normally closed by gravity valves 20, 21,, each having a valve stem slidable Within guide plugs 22, 23, screw threaded into the upper portion of the body 10. A combining tube 24 is screw-threaded into the lower'wallof the suction chamber 13 and a steam nozzle 25 is screw threaded into the wall 0? the steam conduit'in axial alignment with the combining tube, with its lower dis charge end positioned in closeproxi mity to the entrance throat thereof.

Slidably mounted within a bore, extending; upwardly from. the steam conduit, is a valveactuator 26, having a stem 27 projecting into the suction chamber in axial alignment with the water supply valve 21, and the lower end'of said actuator is provided with depending legs 28 to limit its downward movement and cooperating with the stem 27 to guide the actuator.

In Fig, l, the ejector is fitted for installation below the tank water line, and, in this instance, it is desirable to provide meansfor draining; the ejector after use. Therefore, 1 provide a drain fitting 30 connected to the combining tube 24: by a union 31 and provided with an automatic drain valve 32 norare shown in the form of a perforated plate,

but it is obvious that they may be formed of Y wire screen or other suitable straining niaterial. These strainers are inserted transversely acr'oss the water and steam conduits respectively through openings in the body 10; Each opening is olosedfby a screw substantially equal to the area of said con- I duits, so as not to retard the flow of water or steam therethrough. i i

The operation of the ejector is as follows: In the installation 01" the ejector, shown in Fig. 1, below the tank water level, the

water conduit 11 and the valve chamber 12.

will be filled with water. The steam is turned on and will raise the actuator 26 to open the water supply valve 21 and jetting into the combining tube 24: Will create asuction in the suctionchamber 13 and also in the valve chamber 12, this suction lifting the back pressure valve 20 and drawing water from the supply tank, the steam jet combining with the water in the combining tube 24c and imparting velocityjto the discharge, Immediately the ejector is in operation, the drain valve is automatically closed by the pressure of the discharge The sprinkling line is connected to the threaded end ll of the drain fitting 30.

,lVhenever the valve on the sprinkling hose nozzle is shut off, previous to the shutting off of the steam to'the ejector, a back pressure would be created inthe ejector and the steam would blow back into the supply tank, were it not for the back-pressure valve 20, which acts as a check valve to prevent'tl'iis actioin When the ejector is installed above the supply tank water level, no means for draining need be provided, and for such installa tion, I providea modified form of combining tube 42, as shown in Fig. 3, which is interchangeable with the tube 24%: and drain fitting 30, shown in Fig. 1, with the sprinkling hose directly attached over the combining tube 42.

In this instance, previous to the first operation, the valve chan'iber is emptv and the suction created by the steamjet will raise the back pressure valve 20 and draw water from the supply tank, After the first operation,

the water in the valve chamberis retained and serves as a priming medium for subse quent operations: i

' Having described my invention, I claim;

1, An ejector comprising hollow body:

interiorly divided providing a water inlet conduit, a suction chamber, and a cross chamber connecting said inlet conduit and suction chamber, a check valve controlling the communication between said inlet and cross chamber, and from the latter, a second check valve controlling communication between said suction and cross chambers, and

from the latter, a combining and delivery chau lbcr n on obstructi ve C able strainer t the normal capac-i 3 lube connecting with said suction. chamber, a piston chamber having a nozzle tor discharging steam toward the mouth of said for receiving a strainer, a suction chamber connecting with said water supply conduit, a check valve controlling the flow of water to the suction chamber and open against the pressure of the in-coming water, a combinlng tube, a steam nozzle and a steanr-actuated member for opening said checkvalve,

removable strainers transversely positioned 7 across the supply and steam conduits at their respective enlarged portions 3. An ejector comprising a body'provid mg a water supply conduit, a steam conduit and a suction chamber, a supply valve 0011-.

trolling the flow of water to the' s'uction chamber, a combining tube, a steam nozzle, and a steam operated supply valve actuator having a piston-head portion, a stem portion and spaced depending legs projecting from the head portion providing an extended guide surface and limiting the movement of the actuator in one direction.

t. In anej'ector, a casing providing adjacent water inlet, Water suction and piston chaniibers, and a valve chamber connecting said water inlet and suction chamber, check valves for controlling the inlet and "outlet ports of said valve chamber, sealing against discharge from said valve chamber in relatively opposing directions, a steam nozzle connecting with said piston chamber and leading into the suction chamber, a piston in said piston. chamber for operating the valve covering the outlet port of said valve} chamber, a steam inlet communicating with said piston chamber and steam nozzle, having a strainer chamber and transversely removable strainer within said'steam strainer oi" steam inlet caparity. v

in an ejector, a casing providing ad jacent water inlet,water suction and piston chambers, said nlet ch nber having an enz ed strainerreceivi g nsversely within said ened portion 0' an area non-obstructive of j of said inlet chamber, and avalve chamber connecting said water inlet and suction chambers,- check valves for controlling the inlet andoutlet ports of said portion, a removvalve chamber, sealing against discharge from said valve chamber in' relatively opposing directlons, a steam nozzle connecting with said piston chamber and" leading into the suction chamber, a piston in' said piston chamber for operating the valve covering In Witness whereof, I hereunto subscribe the outlet port of said valve chamber, a my name, attested by the two subscribing steam inlet communicating with said piston Witnesses. 1 chamber and steam nczzle, having a strainer chamber and transversely removable strainer Witnesses: within said steam strainer chamber non-cb- CLARENCE B. FOSTER, structive of steam inlet capacity. L. A. BECK.

JOHN GRAN A D;

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