US1693201A - Injector - Google Patents

Description

J. M. GONZALEZ Nov. 27, 1928.

INJECTOR Filed March 31, 1926 attorney I Patented Nov. 27, 1928.

UNITED STATES JOAQUIN MORET GONZLEZ, OF ORIENTE, CUBA.

INJ'EGTOR.

Application filed March 31, 1926.

This invention relates to injectors and motive boilers.

It is an object of this invention to pro-v vide a novel arrangement of the forcing and lifting nozzles which will permit removal of the forcing nozzle without removing the lifting nozzle. v

Y It isv a further object of .this Vinvention to provide an auxiliary water chamber between the overflow chamber and the water supply chamber, an automatic valve being provided between the auxiliary chamber and the water supply chamber.

It is still another object of this invention to provide a three-way valve for connecting the auxiliary Water chamber to the overflow chamber or the overflow out-let.

Other objects will be apparent from the following description of the invention taken in connection with the accompanying drawings in which: l

Figure 1 is an elevation, in section, of the preferred form of the invention;

Figure 2 is a longitudinal sectional view of the forcing nozzle; and l Figure 3 is a section taken on the line 3 3 of Figure 1. Referring to the drawings the body o casing of the injector is provided with usual water inlet 11, steam inlet 12, overflow outlet 13 and delivery outlet 14. The interior of the injector casing is divided into several chambers bythe transverse portions 15, 16, 17, 18, thus forming the steam chamber 19, the water supply chamber20, the auxiliary water chamber 21, the overliow chamber 22, and the discharge chamber 23. In the partition 15 is removably securedv the steam forcing nozzle 24, in which is also removably secured the lifting nozzle 25. The nozzles 26,27 and 28 are removably secured in the partitions 16, 17 and 18 respectively. The openings in which the nozzles are secured are in alignment and increase progressively in diameter from the discharge lend towards the rear end, thus making it Y possible to remove all of the nozzles from the rear end of the injector. The construction of the discharge and rear ends ofthe injector and the operating valve 45 is similar to that shown in the patentY to Gonzalez No. 1,571,406, granted February Y2, 1926.

The nozzle 24 is threaded as at 24a and is adapted to be screwed into a threadedy Serial No. 98,935.

aperture in the partition 15. A bridge 24b within the nozzle 24 is provided with a threaded aperture 24c for receiving the threaded portion 25a ofthe nozzle 25. The bridge 24b has a number of small steam passages 24d so that the steam, when the valve 45 is partly open, may pass into the water chamber 20. It is to be noted that the nozzle 25 may be'withdrawn from the injector thru the rear end without disturbing the nozzle 24. y

The valve spindle 32 passes thru the bonnet 31 which is provided with a nut 33 and fiuid tight packing 34. Pivoted to the rear end of the valve spindle 32 is an operating handle 35 to which are also pivoted the links 36 and 37. The forward end of the link 36 is pivoted to the injector casing at 38 and the link 37 is pivoted at its forward end to a starting valve'spindle 39, to which is attached a valve head 40 adapted to seat against the valve seat 41. The valve operating handle is further provided with a pawl 42 adapted to fit in the groove 43 of the guide 44. The passage of steam thru the steam nozzle 24 is controlled by the valve 45 which is constructed in two cylindrical cup shaped parts, 45a and 45b one slidable within the other. The outer part 45b is threaded on the valve spindle and is provided with a reduced portion 46 in its side wall and an opening 47 thru which the inner part 45a slides, Each part is provided with a shoulder 48 and the valve is so constructed thatwthe outer part 45b may be moved rearwardly some distance before the shoulders abut, at which time further rearward movement of the part 45b causes the inner part 458L to also move rearwardly, thus opening the passage in the steam nozzle 25.

Immediately above thewater supply chamber 20 is a passage 51 providing communication between the chambers 2O and 21th1'u the opening 52 in the upper wall of the 100 Connecting the auxiliary chamber 21 with 105V the overliow chamber are the passages 54, n

V55, while the passages 56, 57, connect these chambers with the overflow outlet 13. The three-way valve 58 controls the flow ofwater thru the passages 54, 55, 56` and 57, it being 110 obvious that connnunication between the auxiliary chamber, overflow chamber and overflow outlet may be established by turn ing the valve 58 to the proper positions. It

will be seenv that the three-way valve isV provided with a squared spindle 59 to which a wrench or handle may be supplied. A; spring v60 in the vcup-shaped extension 61 of the valve bears against the cup 62 and forces the valve against the packing 63thus making tight joint for the spindle 59.

rllhe injector is further provided with an overflow check valve 64 anda dischargeI checlrvalve 65 which operate` inthe usual manner..y Y n The operation of the injector will be understood from the by referring to the drawings.v The valve operating handle 35 moved. rearwardly until the pawl 42 engages the groove 43., In this position the-valve 45b is opened to permit steamv to enter the.. nozzle 26 thru theY steam passages 24d. The valve 40 -is still open at this timev and the, rotary valve 58 is turned to'provide communicationbetween the auxiliary chamber 21 and the overflow chamber 22. The vacuum created in these .chambers lifts water into the supply chamber, auxiliary chamber and overflow chamber. After the flow of water has started the valve handle -is pulled back until theV valve 45 uncovers the nozzle25and the valve 40 closes passage 57. The overflow `valve 64 will now close and the check valve 53 open,ldue to thereduced 'pressures in chainbers21 and 22. The chambers 2l' and 22 may be readily drained when the injector is not in operationthe valve 58 being turned to connect these chambers with the overflow discharge 13. TheV valve 58 may be turned to connect either or both of chambers 21 and 22 with Vthevoverflow discharge 13. Usually when. they injector is operating normally, it

is not desirable to have the overflow chamber 22. connected with the overflow discharge so the valve is turned as shown-'in Fig. 1- to 'connect only the intermediate condensing water .chamber 21 with the overflow discharge; butif the delivery check valve or ovei'flow check 64 fails tcfunction properly on accouiitof high back pressure, wedging ofthe. 'valve on ,its ways or other causes, the three-way valve 58 may be turned to connect-the 'overflow chamber 22with the over- *flow discharge 13 to provide a rapid How of fluid througlithe apparatus. This rapidly flowingA fluid, when started will unseat the j disarranged valvesV and start Ythem into nor- ,mal operation after which the three-way valve is turned back into position in which itis shown inY Figure 1. n

v Having thus described the invention, what isvclaimedy as newand desired to be secured by Letters Patent is:

1. In an injector, a waiter supply chamber,

above description andchamber.

2. In an injector, a water supply chamber, an overflow chamber, an auxiliary water chamber between said supply and overflow chambers, nozzles extending into eachV of said chambers, an overflow discharge, and valve means to provide communication between said auxiliary chamber land said overflow discharge when in one position, betweenV said auxiliary chamber and said overflow chamber when in another position'and between both of said chambers. and said overflow discharge when ina third position.

3. In an injector, a water supply chamber, an overflow chamber, an intermediate condensing4 water chamberY between said supply and overflow chambers, an` overflow discharge, and a three-way valve disposed adjacent the lowermost portionsxof said overflow and intermediate'condensing water chambers to provide communication between them and the overflow discharge. j

j 4. In an injector, a water supply chamber, an overflow chamber, an auxiliary water chamber'between said supply andoverflow chambers, an overflow discharge, andvalve means disposed. adjacent the lowermost portions of said overflowv and auxiliary water chambers to provide communication between said auxiliary chamber and said overflow discharge when in one position, between said auxiliary water chamber and` said over flow chamber when in another position, and between both of said VchalnbersV and said overflow discharge when in a third position.

5. VIn anpinjector, a watervsupply chainber, an overflow chamber, andan intermediate. condensing water chamber between said supply and overflow chambers, nozzles extending into each of said chambers, and a check valve between said supply and intermediate condensing chambers..

6. InV an injector, a water Supplychamber, an overflow chamber, an intermediate condensing water chamber betweenY said supply andoverflow chambers, anA overflow discharge, nozzles extending into each of said chambers, a checlr valve between said supply and intermediate condensing chambers, and a three-way valve to provide com munication between thefoverflow discharge,

overflow chamber, densing chamber.

` 7. In an injector, a water supplychamber, an overflow chamber, an auxiliary Vwater and intermediate con- Vchaniber between said supply and overflow check valve between said supply and auxiliary chambers, and valve means disposed adjacent the lowermost portions of said overflow and auxiliary water chambers to provide communication between said auxiliary chamber and said overflow discharge when in one position, between said auxiliary water chamber and said overflow chamber when in another position, and between both of said chambers and said 10 overflow discharge when in a third position.

In testimony whereof I hereunto affix my signature.

JOAQUIN MORET GONZLEZ.

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