US2040735A - Steam trap - Google Patents

Description

May 12, 1936- A G. F. GERDTS 2,040,735

STEAM TRAP Filed July 50, 1934 2 Sheets-Sheet 1 G. F, GERDTS STEAM TRAP Filed July 3o, 1934- May l2, 1936.

2 Sheets-Sheet 2 a si. e

Patented May 12, 1936 UNITED STATES STEAM TRAP Gustav Friedrich Gerdts, Bremen, Germany Application July 30, 1934, serial No. 737,5191/2 In Germany July 31, 1933 4 Claims.

The present invention relates to steam traps for boilers and other vcontainers and embodies mainly improvements towards substantially automatically and continually removing any mud 5 and air together-,with the condensate. Y

A further object of the invention is to caus any steam escaping undesirably to automatically give a visible rand also Van audible signal of warning.

l I attain these and other minor objects and improvements by providing an auxiliary passage, or passages, and an auxiliary manually operated valve for controlling the samehaving a. suitably divided valve chamber, in addition to the main l passage controlled, for instance, by a float-operated valve, whilst a steam whistle or similar device is inserted in an interrupted section of the discharge pipe or Aconduit so as to be sounded by escaping steam and thesteam or vapour becoming visible. ,v

, In the accompanying drawings showing myimprovements by way of example,

Fig. 1 is a sectional View of the new steam trap. Fig. 2 is a sectional view of part of the trap, partly broken away.

Fig. 3 is a sectional View of part of the trap,

partly broken away. A Fig. 4 is a. sectional view of. a modified form of the trap.

Fig 5 is a sectional view of a detail of the trap partly broken away.

Fig. 6 is a sectional view of a further detail partly broken away.

Fig. 7 is a sectional view of a further detail partly broken away.

According to the invention spindle h` of the manually actuated valve which is screwably mounted in the upper section of the 4-part casing, has a plunger-shaped member g with seats at both ends and is arranged to pass through partition m in the valve chamber, the upper Vedge or rim f of which valve member is adapted to control the flow of the condensate into part x of the valvechamber, the lower edge or rim lY forming the auxiliary valve for controlling the flow toy outlet k through pipe n. and part y of the valve chamber forming the auxiliary passage, pipe n reaching to near the bottom or lowest part of the float chamber to thereby cause the condensate to draw up and remove the mud.

In Fig. 1 the valve member is shown to admit A the flow of the condensate into the oat chamber to be passed to outlet 1c through the float-operated valve and main passage, as is well understood,

whilst the auxiliary Valve is closed by rim Z of the valve member, partition m serving to divide the valve chamber into parts :l: and y, for inflow and discharge, respectively.

In Fig. 2 rim f of the valve member is shown to prevent any inflow of condensate, so that there is no pressure in the float chamber and in consequence the oat-operated valve may be dismounted during operation without any danger or inconvenience.

In Fig. 3 the valve member is shown Vin an inl0 termediate, non-seating position, the condensate ilowing in freely and then passing up tube n forming the auxiliary passage, at the same time carrying with it whatever mud has collected at the bottom of the float chamber, to then pass l5 out through chamber y of the auxiliary valve to outlet 7c, whilst whatever condensate passes through the float-operated valve reachesl at `the same. time outlet lc through the main passage in a direct manner,i. e. not through the auxiliary 20 valve, as indicated by arrows.

In the modified form shown in Figs. 4, 5, 6 and 7, the valve chamber is provided with partition s in addition to partition m whereby the valve l chamber is divided into parts x, y and z. Whilst 25 part y is in connection with pipe n., part z is in connection with passage t shown in dotted lines, leading to the highest part of the float chamber.

`In Fig. 4 the valve member freely admits the condensate to the oat chamber through part a: 30 of the. valve chamber but closes the auxiliary valve and therethrough the two auxiliary passages through parts y and a of the valve chamber, passing to outlet g through the main passage as indicated by arrows, when the trap will be capable 30 of discharging such large quantities of condensate as present occasionally, for instance when starting operations.

In Fig. 5 is indicated by arrows the discharge of any mud in the float chamber by means of 40 the condensate flowing up pipe n and through part y of the valve .chamber and the auxiliary valve to outlet lc.

In Fig. 6 the auxiliary valve shown is provided with an open' outlet pipe, as u, from which flows '5 the condensate into conduit or drain pipe u having a funnel-shaped opening, whereby the advantage is gained that any steam escaping becomes clearly visible.

In Fig. 7 the open @niiet conduit u, is rated wiih 50 a whistle, as w, so that any escaping steam will also give an audible signal of warning. In Fig. '7 is also indicated by an arrow the escape of air from the float chamber through auxiliary channel t and part a of the auxiliary valve. 55

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An important feature of the new valve is that when the auxiliary valve is closed so as not to admit any condensate into part of the valve chamber, as shown in Fig. 2, on dismounting the float chamber the same will be found to be dry and not containing any mud, by reason of the action of pipe n, as, after the water has been blown out, any steam due to revapourization of the water escapes, the pressure then at once becoming' nil, makingr it safe and convenient to take the steam trap apart without dirtying the place in which it is located.

The connection between the lower section of the 4-part casing containing the main passage o leading up from the float-operated valve to the upper section with outlet 7c is established by means of annular passages, as p and p in the upper and lower sections, respectively, Fig. 3, so that the up'- per section with the connecting pipes may be mounted on the lower section at any desired angle by means of bolts suitably disposed (not shown) see Fig. 3.

A further important feature of the new trap is that every time the auxiliary valve is operated, there is an automatic release of the air conned in the float chamber, so` that all devices now in use to get rid of the air in steam traps, all of which require more or less constant attendance and care, become superfluous.

The here disclosed auxiliary valve with its system of auxiliary passages assures all such functions and propensities of an eicient and absolutely reliable steam trap that are desirable and alsol conducive to cleanliness in handling the same.

Havingdescribed my invention and shown one way in which the same may be reduced to practice, what I claim as new and desire to secure by Letters Patent, is-

1. A steamtrap having a casing, a float chamber, a float-controlled main passage and a manually controlled auxiliary passage for discharging mud, comprising, a chamber within the upper part of the casing having a valve seat in a common inlet for both passages, a valve seat in the outlet for the auxiliary passage, a partition about midway between inlet and auxiliary outlet for separating the two passages, a pipe leading from below the partition to the lowest part within the float chamber, and a piston valve passing through the partition adapted to alternately close or open with its opposing ends the inlet and the auxiliary outlet, respectively, and cause part of the condensate with any mud to flow upward through the said pipe and out of the auxiliary outlet of the chamber.

2. A steamtrap having in a sectioned casing a float chamber a float-controlled main passage and a manually controlled auxiliary passage for discharging mud, comprising, a chamber within the upper section of the trap having a valve seat in a common inlet for both passages, a valve seat in the outlet for the auxiliary passage, a partition about midway between inlet and auxiliary outlet for separating the two passages, a central opening in the lowest part of the upper section, a lower section having in its upper part contacting the lower face of the upper section, an opening registering with the central opening of the upper section, concentric registering passages in the said contacting faces adapted to be angularly transposed, and a pipe leading from the chamber below the partition through the said two central openings to the lowest part within the float chamber for discharging part of the condensate and mud up through the pipe and the auxiliary outlet. L

3. A steamtrap having a casing, a float chamber, a float-controlled main passage and a manually controlled auxiliary passage for discharging mud, comprising, a chamber within the upper part of the casing having a valve seat in a common inlet for both passages, a valve seat in the outlet for the auxiliary passage, two parallel partitions between the inlet and the auxiliary outlet for separating the two passages and for subdividing the auxiliary passage into two paths, a piston valve l1' passing through the partitions adapted to alternately close or open with its opposing ends the inlet and the auxiliary outlet, respectively, and controlling with its opposing ends the said two paths of the auxiliary passage, a pipe leading from the lowest part within the float chamber to one of the paths in the chamber for the discharge of mud, and a passage connecting the highest part within the float chamber with the other path for the discharge of air.

4. In a steam trap as characterized by claim 3, an additional, downwardly, open passage from the auxiliary valve for the direct discharge of mud.

GUSTAV FRIEDRICH GERDTS.

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