US1361715A - Injector - Google Patents

Description

J. M. GONZALEZ.

INJECTOR.

APPLICATION FILED MAY3I. 1918.

Patented Dec. 7, 1920.

UNITED STATES JOAQUIN MORET GONZALEZ, OI SIBONEY, FIRMEZA,- CUBA.

V INJECTOR.

Specification of Letters Patent.

Patented Dec, 7, 1920.

Application filed May 31, 1918. Serial Iva 237,639.

To aZZ whom it may concern:

-Be it known that I, JOA UIN M. GON- ZriLEZ, a citizen of Spain, and resident of Siboney, F irmeza, Municipal District of El Caney, Provincia' de Oriente, Republic of Cuba, have invented certain new and useful Improvements in Injectors, of which the following is a specification.

This invention relates to injectors and particularly to steam injectors for use on locomotives having either high or low pre sure boilers, and the objects of the invention are to provide a device of this class in which the various interior parts may be quickly and easily removed and cleaned or replaced, or new parts substituted, if any are broken, and also to provide an injector which operates quickly, which causes a minimum amount of waste through overflow, and which is in all respects a simple, thor oughly practical, and inexpensive device of this class to manufacture and to use.

The invention will be fully disclosed in the following description when taken in connection with the accompanying drawing in which: I

Figure 1 is a'sectional view of the in jector in closed or in operative position;

Fig. 2 is a section along the line 2-2 of Fig. 1;

Fig. 3 is a section along the line 3-3 of Fig.1;

Fig. 4 is a cross section of a modified form of a detail;

Fig. 5 is a longitudinal section of a modified form of one of the elementsof the injector; and

Fig. 6 is an end view of a modification of Fig. 5.

The body portion of the injector is indicated at 10 and is provided with the usual steam inlet 11, water inlet 12, overflow outlet 13, and delivery outlet 14. The various outlets are screw threaded as shown to provide a convenient means for attaching pip ing. The interior of the body has four transverse partitions therein, indicated re spectively at 15, 16, 17 and 18, each of these partitions having an opening therein, the openings of the various partitions being alined and containing respectively the steam nozzle 19, the rear portion 20 of the forcing and combining tube, the fore portion 21 of the same, and the delivery tube 22. The rear portion of the injector is also provided with a cylindrical screw threaded opening into which is screwed the bonnet '23 through which the valve spindle 24 extends with a sliding though fluid tight fit.

Pivoted to the rear, end of the valve spindle 24 isthe usual operating handle 24 which is also pivotally connected at 26 to the link 27 which has its forward end piv- V oted at 28 to the body 10 ofthe injector. The forward end of the spindle 24 is rigidly connected to the primary valve 29 the face of which is adapted to seat against, the annular ,rear end portion of the steam nozzle 19. i r

The main bore 30 of the steam nozzle is controlled by a secondary valve 31 which has a central longitudinal opening 32 therethrough and is. provided at its rear end with an annular external flange 33. A screw nut 34 threaded into the restricted annular forward end of the valve 29 has an internal flange 35 which engages with the flange 33 on the secondary valve 31 thereby limiting its movement relatively to the primaryvalve 29 to the relatively short distance between the flange 35 and the forward end of the valve 29.

The secondary valve 31 hasalso therein a duct or passageway 36 which brings the axial passageway 32 into communication with the chamber .37, which is located within the rear portion of the steam nozzle and between the two valves 29 and 31.

It can be seen that as the handle 24 is drawn rearwardly the valve 29 will im-. mediately be unseated from the rear end of the steam nozzle 19 thereby admitting steam from the steam inlet 11 in the chamber 37 and permitting it to pass through the duct 36 and passageway 32 into the bore of the first section 20 of the combining tube. Further movement rearwardly of the handle 24 will cause the flanges 33 and 35 to engage, thereby unseating the valve 31 and allowing steam to flow through the larger passage 30 in the nozzle. Between the partitions 17 and 18 is located the chamber 38 communicating by means of a passage 39 with the annular passage 40 leading around the body of the injector to the overflow outlet 13. The passage 39 is controlled by the valve 41 which operates to control the overflow in a manner hereinafter to be described.

A delivery check valve 42 is located in front of the delivery pipe 22 and is axially alined therewith. This delivery check valve seats against the forward annular end of the delivery tube' and is guided in its movements by a member 43 which is provided with a recess with which the stem of the valve 42 makes a sliding fit.

The fore portion 21 of the combining tube I the various partitions of t e injector are larger in the rear than in the front. By unscrewing the bonnet 23 from the body the valves are removed and a suitable opening made through which the parts 19, 20 and 21 may be removed if desired, without disturbing the pipe connections connected to the inlet members 11 and 12, the outlet member 13, or the delivery outlet 14. This is a great advantage as it is frequently necessary to remove these parts to remove scale.

The member 22, the valve 42, and the guiding member 43 are removed by disconnecting the body portion'from the pipe or boiler and withdrawing them through the delivery outlet 14.

From the above description the operation of the injector will be apparent. a l hen the lever 24 is drawn rearwardly to a substan tially vertical position theprimary valve 29 is open and a small jet of steam issues from the tube 32, leading water through the water inlet 12 and carrying it over into the cham-- ber 38. The chamber 38 is almost instantly filled and the valve 41 is lifted causing the excess water to overflow and pass out through the opening 13. Within a second or two after this lifting action has started the handle 24 may be pulled through its full distance to the rear thereby opening for the passage of steam the bore 30 of the steam nozzle after which the well known injector action takes place and the check valve 42 is opened and steam and water are forced into the boiler or other receptacle. 7 When the injector action is stopped the valve 42is immediately seated by the back pressure of the steam in the boiler. valve 41 is drawn tightly on its seat by the suction caused by steam condensation, thereby stopping theoverfiow immediately.

In the operation of the device a portion of the water and steam will pass through the central bore of the forward part of the combining tube 21, and a portion through the auxiliary openings 44.

The combined air and'steam passing at high speed through the combining tube 21 causes a suction through the lateral tubes or ducts leading into the same and, this suction being communicated through the longitudinal conduits 44 and 45 will cause a suction in chamber 16 whereby condensed steam and water which may have gathered in this chamber will be removed.

The device as illustrated and described has been subjected to repeated tests and has proven to be an exceedingly eificient and desirable injector. The invention of course may be modified and I do not limit myself to the precise details of the form illustrated. The scope of the invention is indicated in the appended claim in which I clearly point out my invention. I

In Figs. 5 and 6 is illustrated a tube member which is adapted to be substituted for the member 20 illustrated in Fig. 1 and which has been found to give desirable results under certain conditions.

What I claim is:

In an injector, a combining and forcing tube comprising two alined sections one of said sections having a central bore and a series of openings therethrough parallel with the bore and each of said openings cornmunicating with the bore by means of a lateral passage.

JOAQUIN MORET GONZALEZ.

The waste or overflow

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