DE1600773A1 - Valve - Google Patents

Description

PATENT LAWYERS

DR.-iNG. BY KREISLER DR.-ING. SCHÖNWALD 1600773 DR.-ING. TH. MEYER DR. FUES

COLOGNE 1, DEICHMANNHAUS

June 15, 1967 B / Se

Flair Manufacturing Corporation,

600 Calebs Path, Hauppauge. Lomg Island, New York, V.St.A,

Valve.

The invention relates generally to valves for regulating the flow of media and, more particularly, to a Valve which is designed so that it opens automatically according to the pressure of the medium at the outlet and closes.

The valve according to the invention is particularly suitable for use as a pressure-regulated filling valve for> regulating the flow of water, gas and other media from a pressurized main line into a closed one System. The invention looks like the usual valves a valve construction which has a housing with an inlet which can be connected to the main line, with an outlet that can be connected to a closed system that is filled from the main line is to be, and with a passage which is in communication with both the inlet and the outlet to the To record the flow of the medium between them. A

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Movable closure part is used to open and close of the passage to enable or prevent the flow of the medium through the valve.

To carry out the opening and closing process according to Depending on the pressure prevailing at the outlet, an elastic member is provided according to the invention, preferably in the form of a spring which presses the closure part into an open position remote from the passage, as well as a membrane, which can be deflected by the pressure prevailing at the outlet in order to transmit a force to the closure part, which counteracts the force exerted by the spring.

The characteristics of the spring and the diaphragm are chosen so that for outlet pressures below a predetermined Value lie, the force of the spring overcomes that of the membrane and the shifted closure part in an open position, while for outlet pressures which are greater than this value, the membrane holds the closure part shifts into sealing engagement with the passage. Therefore, when the valve according to the invention for filling a closed system is used from a pressurized main line, the medium flows into the system, until the pressure in it drops to the pressure which is determined by the membrane and the spring and which interrupts the flow increases, so that at this pressure and at higher pressures that can develop later in the system, another Flow from the main line is automatically shut off.

In order to prevent the opposite flow of the medium from the system back into the main line, which for example cause contamination of the water supply line

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could, according to the invention, is an elastic check valve which is disposed within the housing in sealing engagement around the passage. This Check valve, which expediently consists of a conically shaped

can
The rubber sleeve is made up of, as a result of the pressure forces of the medium acting in the direction of the flow from the inlet to the outlet (from the main line into the system) being deflected from its sealing engagement with the passage, or by pressure forces of the medium acting in the opposite direction act, are brought into stronger sealing engagement with the passage. Although the check valve is connected to a movable spindle which is provided for the independent adjustment of the position of the closure member, the check valve is dimensioned such that it remains in a unidirectional flow in sealing engagement with the housing member bypassing the passage, regardless of that whether the locking part is in the open or closed position.

This feature of the invention is extremely advantageous because it not only prevents main line contamination, but because there is also a loss of medium from the system, such as a heating system, a boiler, etc., in the event of a Prevents breakage or a leak in the main line.

Assuming that there will be numerous instances where the one afforded by the combination of the spring and diaphragm automatic pressure control has to be bypassed, either because it is necessary or because it appears expedient to according to the invention, the possibility of manual override is provided. This is the purpose of the locking part rr. connected to a spindle having a threaded Has shaft part which extends from the valve housing extends out. The spindle can relative to the housing a

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Carry out sliding movement inwardly in order to arrange the closure part away from the passage, whereby the passage for a substantially unimpeded flow of the medium is opened through the same. This is extremely beneficial in order to to achieve a faster filling of the system than would otherwise be possible with an automatic filling process.

However, the spindle can also have a displacement movement relative to the housing run in the opposite direction or outward to the closure member in sealing engagement with the To bring passage.

The manual override adjustment of the spindle and the locking part is carried out with the aid of a cap which is rotatable in screw engagement with the shaft portion of the spindle. This cap is designed so that it with the housing in Intervention occurs and thereby limits the possible displacement movement of the spindle. The cap can be around the spindle shaft and rotated relative to the same until the cap rests against the housing and the closure member is in sealing engagement pulls with the passage, thereby closing the valve regardless of the forces exerted by the spring and diaphragm will. Since in this override position of the cap the possible displacement of the spindle is reduced to zero, the membrane and the spring have no effect on the closure part and the same is therefore kept closed, until the cap is twisted back in the opposite direction.

When the valve has been closed by the automatic action of the spring and the diaphragm depending on the outlet pressure it can be brought into an open position by simply placing the cap on the spindle shaft

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is twisted back, in which it does not work with the housing is more engaged and by pushing on the cap to slide the spindle into a position in which the closure part is removed from the passage.

To open the valve in this way by manual override To enable the spindle shaft is provided with a thread of sufficient length so that the cap in can be screwed back a sufficient amount in the axial direction to allow displacement of the spindle, which opens the closure part wide enough for an essentially unimpeded flow of the medium through the passage. The length of the thread on the shaft is accordingly dimensioned such that the cap when it is relative to the housing after is pressed inside, a maximum displacement of the closure member causes before the cap to abut against the housing comes. Under these circumstances, the opening of the valve is supported by the spring, while the diaphragm supports the same counteracts. All that needs to be said about the cap is the difference to be exerted between the forces of the spring and the membrane in the form of an inward pressure «,

Although the valve according to the invention could easily be modified by providing lugs and slots, to lock the cap on the housing in a valve opening override position, which in some cases feu opposes an override process that closes the valve, it appears undesirable, one not to allow monitored bypassing of the automatic pressure control, because the system will be filled to a pressure that is above the intended pressure. According to a preferred embodiment of the invention is therefore none

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such locking of an override position opening the valve intended.

If as a result the cap has been pressed inside is to cause an override of the automatically pressure-regulated filling process of the system, for example in order to achieve a quick filling of the system, the valve is returned to its automatic mode of operation, once the cap is released.

A subject of the invention therefore forms a valve for regulating the flow of a medium in an automatic Dependence on the pressure of the medium at the outlet.

Another object of the invention forms a valve which is used to fill a closed system with water a pressurized main line can be used.

Yet another object of the invention is a valve that controls the flow of medium supplied to the outlet shuts off after reaching a certain outlet pressure.

Another object of the invention is a valve that opens automatically to reduce the pressure in one with the To increase the outlet connected system to such a value, regardless of any previous shut-off the flow of the medium into the system.

Yet another object of the invention is a valve that allows manual override of the opening and closing Closing process allows.

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The invention also provides a valve that can be manually operated to do the same regardless on the pressure conditions prevailing at the outlet and inlet to bring into a closed position.

The invention also relates to a valve which contains a check valve to prevent the medium from flowing to prevent in the opposite direction from outlet to inlet and which nevertheless is essentially one allows unimpeded forward flow from inlet to outlet.

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Further features and advantages of the invention result from the description below.

In the drawings shows:

Fig. 1 is a longitudinal section of a preferred embodiment of the valve according to the invention, which is shown in its normal automatic mode of operation in a shut-off position is,

Pig. 2 shows another longitudinal section of the valve according to FIG. 1, which is shown in a manually overridden open position is,

5 shows a further longitudinal section of the valve according to FIGS Fig. 1 and 2, which is shown in a manually overridden shut-off position.

As the drawing shows, the valve 10 according to the invention has a housing 11 which is provided with an inlet 12 which can be connected to a source of a pressurized medium, for example a water supply line (not shown) with an outlet 13, which can be connected to a closed system such as a heating system (not shown), a boiler, etc., as well as a passage 14 which communicates with both the inlet 12 and the outlet / 1J> to take up the flow of the medium between them.

The opening and closing of the valve 10 and thus that Occurrence or non-occurrence of a flow of the medium through the passage 14 is determined by the position of a closure part 15 determined. The closure part 15 has a generally conical shape and is arranged within the housing 11 for linear movement relative to the same to a position remote from the passage 14 to control the flow of the medium

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enable by the same bu, as shown in Fig. 2, as well for movement to a position 16 of sealing engagement with the passage 14 to permit the flow of media therethrough the same as the Pig. I and 3 show.

An elastic member in the form of a conical spring 17 which engages with the housing 11 and the closure part 15 stands, pushes the closure part 15 in a position remote from the passage. The spring 17 can be any ISi corresponding type and can also be arranged outside of the housing 11. Preferably, however, the spring 17 arranged within the housing 11, as shown in FIGS. 1-5.

A membrane 18 * the inside of the housing 11 for the purpose Connection with the outlet 13 is arranged, is connected to the closure part 15 to the position of the same in Depending on the pressure of the prevailing at outlet 13 The medium. The force acting on the membrane 18 corresponds to the pressure of the medium prevailing at the outlet 13 and counteracts the force exerted by the spring 17. The effective pressure surface area of the membrane 18 and the The deflection constant of the spring 17 are chosen so that below a certain pressure at the outlet 13, the force of the Spring 17 overcomes the opposing force of the membrane 18 to the closure part 15 in a remote from the passage 14 Position to be arranged while for outlet pressures, which are 'equal to this pressure or higher than the same, which the represents automatic shut-off value, the force of the membrane overcomes the force of the spring 17 to the closure part bring into sealing engagement with the passage 14.

Fig. 1 therefore shows the valve 10 in an automatically determined by the pressure operating state in which the Pressure at outlet 13 is equal to the shut-off value, which is through the

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Combination of the spring 17 and the diaphragm 18 is set.

In conjunction with the Pig. 1-3 it should be noted that the Invention provides an elastic check valve 19 which is connected to a spindle 20, which the closure part 15 carries. The check valve 19 is located within the housing to around the passage 14 with the housing in Sealing engagement to come.

The check valve 19 expediently consists of a conically shaped rubber sleeve with elastic properties such as that for on the inside of the check valve 19 and in the direction of the flow of the medium from the inlet 12 to Outlet 13 acting pressure forces of the medium of the lip part 21 of the check valve 19 from sealing engagement with the Housing surface 22 is deflected, while for the outside of the check valve 19 in the opposite Pressure forces of the medium acting in the direction, which tend to cause a return flow from outlet 13 to inlet 12, the lip portion 21 is brought into greater sealing engagement with the housing surface 22. This feature of the invention prevents contamination of a water supply line connected to the inlet 12 for the pail that the am The system pressure prevailing at outlet 13 is greater than that at inlet 12 prevailing pressure of the supply line increases. That Check valve IQ also prevents a loss of medium from a system connected to the outlet 13, if in the A break occurs in the supply line.

Accordingly, the arrangement of the check valve is highly desirable because it has a unidirectional flow of the medium from inlet 12 to outlet 13 guaranteed, which is essentially unimpeded, except when the Locking part 15.

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To ensure, that the through the check valve Required protection is maintained regardless of the position of the closure part 15, has the check valve 19 such an axial length and the diameter of the lip part 21 large enough dimensions to make this Lip part 21 over the entire displacement range of the closure part 15 in sealing engagement with the housing surface to keep.

For a manually controlled override process of the valve 10, the spindle 20 connected to the closure part 15 can execute a limited displacement movement relative to the housing 11 and is guided in a bore 2j5 of the same. The spindle 20 has an externally threaded shaft portion 24 which engages an internally threaded portion of a cap 25. The cap 25 can be rotated by hand on the shaft 24 in order to adjust the distance between a bearing surface 26 on the cap and another bearing surface 2J on the housing 11. To prevent the cap 25 from being unscrewed from the shaft 24, a retaining screw 28 is provided.

By turning the cap 15, the distance between the bearing surfaces 26, 27 and accordingly the possible axial displacement of the spindle 2% and the closure part 15 can be a maximum, as in FIG. 1, or reduced to zero, as in FIG.

In the case of Fig. ~ $, According to which the bearing surfaces 26 and abut against each other, the closure part 15 is pulled upwards and relative to the housing 11 outwards into the position 16 of sealing engagement with the passage 14 Valve 10

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completely shut off, regardless of the pressure forces prevailing at the outlet 15, which act on the membrane l8 act. In this shut-off position achieved by manual override, the valve 10 acts like a normal one Ball valve and the automatically pressure-regulated flow process is not restored, Waknend. the cap 25 is turned back enough to allow the shutter to move under the influence of the spring 17 and the Open and close membrane l8.

In order to restore this automatic mode of operation, the cap 25 is preferably screwed back until it is stopped by the retaining screw ^ 28, like Fig. 1 and 2 show. This allows a larger displacement range of the closure part 15, so that the same in one greater distance from the passage 14 can be arranged in order to prevent the obstruction of the same at full flow Reduce the minimum.

Therefore, when the cap 25 has been turned back, the valve 10 will operate automatically as in Fig. 1 and the Closure part I5 will vary depending on the one at the outlet 15 closing and opening the prevailing pressure.

If, for example, the. Fill one with outlet Ij5 connected system is desired to achieve a higher filling speed than with the automatic Operation given flow restrictions is possible, the cap 25 can be pushed down as in Fig. 2, until the bearing surfaces 26 and 27 are in contact with one another, while the closure member 15 is displaced to its maximum distance from the passage 14, so that a substantially unimpeded flow of the medium is made possible through the same.

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In connection with the manual override shown in FIG. 2, which opens the valve, it should be noted that that by simply releasing the cap 25, the valve 10 under the action of the spring 17 and the membrane 18 in his automatic mode of action is returned. This is advantageous because if the cap 25 and the housing 11 with Means (not shown) would be provided, which allow the closure part 15 in this a full flow Lock position could be connected to the outlet 13 System can be filled to excessive pressure if valve 10 is not monitored. In the described Way, however, the valve 10 can only be brought into the position allowing full flow by the Cap 25 is held depressed.

For the practical applications of the valve 10, therefore assumed that its inlet 12 is generally finer (not shown) source of the medium is connected, which is under a pressure "/ which is for regulation by the Spring 17 and the membrane 18 is required.

The valve according to the invention can be modified in various ways experienced in order to be able to adapt to the requirements of a special system.

x) which is higher than the pressure

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Claims (7)

A η s'p r ü c h e 1. A valve with a housing having an inlet, an outlet and a passage, which with the inlet and the outlet is in communication to receive the flow of the medium therebetween, with a closure member, the is movably arranged within the housing relative to the passage and in a position remote from the passage can be brought to allow the flow of the medium through the same, as well as in an engaged position with the passage to prevent the flow of the medium through it, characterized by an elastic member, which engages the housing and the closure member to move the same to a position remote from the passage press, as well as by a membrane which is arranged within the housing for the purpose of connection with the outlet of the same and is connected to the closure part to the position of the same depending on the pressure prevailing at the outlet of the Medium and set against the action of the elastic organ, the membrane and the elastic organ are arranged so that the closure part for below a predetermined value lying outlet pressures Arrange medium in a position remote from the passage and for outlet pressures of the medium, which on the predetermined Value and above it, bring into sealing engagement with the passage to for below the value lying outlet pressures to allow a flow of the medium from the inlet to the outlet, or for outlet pressures that on the value and above the same to prevent such a flow of the medium. 009819/0199 2. Valve according to claim l _s characterized by a device which is connected to the closure part and is adjustable for the purpose of engagement with the housing to the position of the closure part relative to the passage independently of the Really
Movement of the membrane and the elastic organ is optional to change. 5. Valve according to claim 2, characterized in that the adjusting device for the closure part consists of a spindle which is connected to the closure part and which has a threaded shaft extending out of the housing that the spindle relative to the housing can perform a sliding movement in one direction to the closure part in sealing engagement to bring with the passage, as well as in the opposite direction to bring the closure part in one of the passage to arrange remote position that a cap is rotatably arranged in screw engagement with the shaft and with the Housing can come into engagement to avoid the possible sliding movement the spindle and the locking member, with the cap in an engaged position around the shaft is rotatable with the housing in order to reduce the possible displacement movement of the spindle to zero and thereby the Closure part, in sealing engagement with the passage too bring, and wherein the cap is rotatable around the shaft also in a position which enables the spindle to a perform sufficiently large displacement movement to the closure part in a position remote from the passage for an essentially unimpeded flow of the medium by the same to arrange. 4. Valve according to claim 5, characterized in that the spindle relative to the housing can perform a sliding movement inward to the closure part in a IJ 09819 / 01.9 9 to arrange remote position from the passage, as well as a sliding movement outward to the closure part in Bring sealing engagement with the passage. 5 · Valve according to claim 3, characterized in that the cap is arranged outside the housing and can be rotated by hand into screw engagement with the shaft _# 6. Valve according to claim 3, characterized by elastic check valve connected to the spindle for movement therewith and within the housing is positioned around the passage for sealing engagement therewith, the check valve being pressurized deflected a flow of the medium from the inlet to the outlet from this sealing engagement with the housing, as well as by pressure forces of the medium acting in the opposite direction in stronger sealing engagement with can be brought to the housing to allow the flow of the medium from the inlet to the outlet, or the Shut off the flow of the medium in the opposite direction. 7. Valve according to claim 6, characterized in that the elastic organ consists of a spring arranged within the housing. 009819/019 9