DE2909046A1 - PRESSURE VALVE FOR FLUID OR LIQUID CONTAINER - Google Patents

Description

Kabushiki Kaisha Neriki in Amagasakishi Hyogoken (Japan)

Pressure-responsive valve for fluid or liquid containers.

The invention relates generally to valve assemblies for use in controlling the outflow of fluid from and within a container. In particular, the invention relates to a pressure-responsive valve unit which is attached to the opening a fluid container or liquid container connected and to open for omission determined by liquid or fluid from the container is when the pressure in the container, which acts on the valve arrangement, exceeds a preselected amount, and is intended to close when this pressure falls below the preselected value, so that impurities such as Outside air, dust, oil, smoke and the like are not in the container can penetrate.

A general arrangement for controlling the flow of liquid from a container ordered to use a valve that can be opened and closed by hand. It is coming it often occurs that the valve cock of such a valve is open to the left, out of carelessness or on purpose,

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to allow fluid to drain while the operator waits for other work. If the pressure in the container falls sufficiently while the valve cock is open, because the container is empty or for other reasons, it is possible for contaminants to enter the container through the open valve cock. The contaminants, such as outside air, dust, oil, smoke gases, etc. dirt can cause the fluid of a j _e, which remains in the container, or the container itself. When this occurs, it may be necessary that the container is cleaned at intervals both temporarily or by exchanging or possibly by vacuum suction, or sucking by Vacuum. The container itself may need to be cleaned before it is to be used again. These corrective actions are both time-consuming and costly.

In order to solve this penetration problem, many proposals have been made, including one effective procedure is to equip the container with a shut-off valve, which accordingly includes a reduction in pressure in the container below a preselected value. This can be a Avoid the possibility of outside contaminants entering the container while it is in the emptying is located. A pressure responsive valve for this purpose is the subject of the US patent 3,8o9,117 · Although the valve of this patent represents an advance in the field or in this regard means, it has nonetheless left some questions for the problem unsolved.

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A valve unit used to solve the intrusion problem must be designed in such a way that that the container can easily be filled with liquid or fluid through the valve, and must to be constructed in the same way so that it opens properly to drain fluid, and closes when the pressure in the container falls below the preselected value or the preselected Height decreases. Furthermore, it is desirable that the pressure-responsive valve unit is designed so that that their actuation or working pressure can be preselected before the valve unit in the container is built in. The unit must be capable of being easily disassembled or disassembled and can be repaired. No pressure-responsive valve previously proposed for use in containers has successfully solved all of these problems. This although a need for an improved pressure responsive valve. The invention aims to provide satisfaction this need.

The pressure-responsive valve unit according to the invention has the appearance of one with external j threaded cartridge and is intended to be inserted into an internally threaded cavity to be built, which is connected to a container j. The cavity is preferably filled with fluid or j Liquid from the container through a conventional flow control valve of suitable design fed. The valve unit comprises a sleeve-like main body with a central outlet bore in the outer end and slot-shaped inlet ports in the inner end. The main-

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ORIGINAL INSPECTED

body contains a chamber in which a shut-off valve body is slidably arranged. The shut-off valve body has a central bore therethrough which communicates with the outlet bore in the main body stands. The forward end of the check valve body can be brought into engagement with a seat, which is provided in the chamber around the outlet hole of the main body. A feather is between that rear end of the shut-off valve body and a cap-shaped adjustment body is provided, which is inserted into the inner end of the sleeve-like Main body is screwed. Fluid or liquid enters the valve unit through the slot passages in the box-like main body and wiik t if the fluid or liquid pressure is sufficiently high, open the shut-off valve body against the Force of the spring to build up a flow from the container.

The actuation pressure for the valve unit is preselected by the position of the setting body is set. This can be done separately from the container, which is one of the advantages of the Invention over the prior art. When the pressure in the container, which the valve unit is supplied, drops below a preselected actuation pressure for the valve unit, so acts the spring on pushing or pushing the shut-off valve body into the closed position.

To allow easy filling of the container, is the outlet hole in the main body of the valve unit with the outlet of the cavity, in which the unit is arranged, aligned and the check valve body is aligned with the outlet bore anyway arranged that it is from one

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Tool can be gripped, which is from the outside of the valve unit through the AuslaßbcWung is led. With this arrangement, it's a simple matter to have a filling device with you to connect the cavity. The filling device has a push rod which through the Outlet hole of the main body goes, engages the shut-off valve body and the valve against the The force of the spring opens. After this, fluid or liquid can freely enter the container through the valve unit are fed. The whole process is done with no harm or the need to disassemble · Performed the pressure-responsive valve unit according to the invention.

In order to facilitate the installation and removal of the valve unit in the cavity, the hole has in the main body an irregular shape or is designed out of round, so rectangular shape, so that they can accommodate a suitable tool for turning.

In a modification of the invention, the check valve body is provided with a cam surface on its front part which is opposed to a pin carried by the main body of the valve unit is or is located at this. The central bore of the shut-off valve body has an irregular shape, so that it can accommodate a turning tool or a tool for turning. When using a Turning tool, the shut-off valve body can then be rotated in the chamber, with the cam surface on brushes past the protruding pin and opens the shut-off valve against the force of the spring can be. The valve remains open until the shut-off valve in the opposite direction

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is rotated. This arrangement allows free access to the container, if desired

It is a primary object of the invention to provide a pressure responsive valve assembly for opening a To create Plüssigkeits- or Pluidbehälters, which is intended to solve the problems of the previously known valve units to overcome for these purposes.

Another object of the invention is to provide a pressure responsive valve assembly which has a Can cause closing depending on the liquid pressure in a connected container, when the pressure drops to a value below the predetermined or preselected pressure, the Penetration of outside substances into the container is prevented.

Another object of the invention is to provide a pressure responsive valve assembly of the type or type described, which is designed so that it is easy to use can be opened if necessary in order to to carry out a filling process in the container.

Yet another object of the invention is to provide a pressure responsive valve assembly for a fluid container designed to be easy to operate can be opened if this is necessary to carry out a container filling process.

Yet another object of the invention is the creation of a pressure-responsive valve unit for a fluid or liquid container, so that the level of the actuation pressure can be easily selected before the unit with the container connected is.

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It is also to create an object of the invention to provide a valve unit of the type or the type described, which is to be simple and easy in their construction and which are easily assembled quickly and and can be taken apart.

Other objects and many of the resulting advantages of the invention will be apparent from the following description of the preferred embodiments in conjunction easily understood with the accompanying drawings.

The following preferred embodiments of the invention are made with reference to the accompanying drawings Drawings described.

Fig. 1 shows a previously known valve unit in axial section, which for use in lifting or removal of liquid from a container is used.

Figure 2 is a sectional view through a valve assembly according to a first embodiment of the invention, wherein a container is indicated by dash-dotted lines Lines indicated and the valve assembly according to the invention is installed in its cavity.

FIG. 3 shows an enlarged longitudinal section of the pressure-responsive valve unit according to FIG. 2.

Fig. 4 is a sectional view taken along the line IV-IV in Fig. 3.

Fig. 5 is a representation corresponding to Fig. J5 however, in which the shut-off or regulating valve body is pushed into its open position.

Fig. 6 is a side elevation, partly in section, showing a filling device attached to the valve unit is attached according to the invention.

7 shows an axial section or, enlarged section in the axial direction, which illustrates like the push rod of the device

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BATH ORIGINAL

Fig. 6 is effective to the regulating or shut-off valve to slide into the open position.

Pig. Figure 8 gives an axial section through a second embodiment of the pressure responsive Valve unit according to the invention again, wherein the Check valve body is provided with a cam surface which can be engaged with a cylindrical pin which is attached to the main body the valve unit.

In order to better explain the basic idea of the invention, reference is first made to FIG. 1, in which a characteristic example (exemplary example) of a previously known valve is shown, which prevents the entry of foreign substances into a connected container when the pressure in the container falls below a selected value has fallen. In Fig, I a valve unit is generally or generally designated 56 and comprises an outer housing 51 * which contains a valve chamber 55 in which a check valve body 5 ² J- is housed in such a way that it is from a seat which is provided around an inlet 52 can be moved away against the force of a spring 53. A spring pressure adjusting piston or plug 57 be found screwable in the outer end of the valve chamber 55 and has a continuous central outlet bore which has an uneven shape so that it can receive a suitable rotary tool. The piston 57 engages in the spring 53. The pressure exerted by the spring is adjusted inwards or outwards by screwing the piston or stopper until the valve unit 56 is adjusted

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is to then the desired opening fluid correspond to.

If the pressure in the container connected to the valve unit 56 exceeds the setting of the spring 53, the valve body 5 ^ will move backwards, as shown in FIG. 1, and fluid or liquid will flow through the longitudinal passages which are shown in FIG the circumference of the valve body 5 ^ are provided, and through the central bore in the adjusting piston 57 from. After the pressure in the container falls to a value below the setting of the spring 53, the valve unit 56 closes to prevent foreign matter from entering the container. In this way, the valve body 5 ² ^ is moved either in the opening direction or in the closing direction in accordance with the fourth of the pressure in the container.

While the arrangement of Fig. 1 is functional for many applications, it has disadvantages, polygamy typically found in the prior art. They are essentially the following:

a) If it is desired _A fresh liquid or fresh fluid of the container zuzuspeise ^ it is necessary to keep the valve unit 56 in the open state, the valve body 54 in Fig. 1, against the force of the spring is moved 53 to the left. This requires a special tool, not shown, for engaging and pulling the valve body. The result is a relatively intricate arrangement which essentially involves labor and expense which creates a poor filling operation. ί

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AS 2809046

(b) Turning the adjusting piston 57 in a chamber requires a special tool and adjustment of the valve to the appropriate pressure must be made because it is connected is. This takes time, consumption and requires a level of skill that is greater than the level of skill the normal worker goes out.

(c) Tight tolerances in manufacturing must be achieved and attention is drawn to it required when adjusting the position of the adjusting piston. Also need repair work be made to thread damage and damage to the seat or other parts to avoid the valve.

(d) Because the adjusting piston 57 is adjusted after the valve unit is attached to the container must be, it is necessary that the worker handles the container assembly as a whole. This can require a relatively large manpower, involve awkward movements and the Impose an unacceptable burden on the operator.

The valve unit according to the invention overcomes all of these problems. It is shown on Fig. 2-7 Reference is made to the drawings in which a container valve assembly J5 to a fluid or liquid container via a threaded one Nozzle 2 is attached. The container valve assembly 3 comprises a valve housing 4, which is a Inlet bore 5, a central bore 6, an outlet bore 7 and a cylindrical cavity 8, which is located in an externally threaded cylindrical arm 9 of the housing.

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2309046

A pressure responsive valve unit 13 made in accordance with the first embodiment of the invention is formed is mounted in the cavity 8. The axes of the inlet bore 5 and the cavity intersect and are arranged at right angles to each other. The liquid follows a path from the container 1 through the inlet bore 5 into the central chamber 6 of the valve housing 4 and then through the outlet hole 7 in the »cavity 8, where there is on the inner end of the valve unit 13 bumps. When the container through the housing arm 9 with the valve unit 13, which is in an open Position is held, is filled, then of course fluid or liquid flows in the opposite direction.

In the central chamber 6 there is a externally threaded main valve core lo, can be _/ is moving which in and out of engagement with a seat surrounding the inner end of the inlet bore by a rotatable shaft 12 which is mounted there.

The shaft 12 is rotated with the help of a handle 11, which is detachable with the above upper end of which is connected to the valve heart Io between the open and closed positions to move, controlling the flow of fluid or liquid in and out of the container.

The pressure responsive valve assembly 13 of Figures 2-7 comprises a sleeve-like main body 16 with internal and external threads on the inner end portion. The external thread thereon can be brought into engagement with the thread Ik which is provided on the inner end portion of the cylindrical wall of the

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WHEEL ORIGINAL

Cavity 8 is provided. The outer end part of the cylindrical wall is unthreaded as the outer end portion of the main body l6 and the latter one have annular groove in which there is an O-ring

15 is located to a fluid seal or liquid seal to build.

The main body 16 contains a chamber which has an annular radial at its front end Wall 28 bounded, which surrounds a frustoconical valve seat 31. The latter is through one cylindrical bore 32 with an outlet bore 3o of reduced diameter and more irregular Shape, e.g. hexagonal, connected to receive a turning tool, which is used to make the Screw the valve unit into the cavity 8 and unscrew it. Are diametrically opposite each other elongated passages or passages 33 in the inner end part of the sleeve-like main body

16 provided to fluid or liquid to and from the chamber in that. Head main body. The number of slot passages used can therefore vary and so does their ordering point.

Into the chamber, which is in the box-like Main body l6 is provided, there is a shut-off valve body 19, which is in the chamber with Is held by means of a cap-shaped adjusting piston 21 which is inserted into the rear end part of the main body is screwed in. The shut-off valve body has a cylindrical outer surface, which is a Has an annular groove in which an O-ring IT is located. The O-ring 17 forms a liquid seal with the cylindrical side wall of the cup-shaped threaded plug 21.

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The front end 23 of the check valve body 19 has an annular groove 24 which has a O-ring 25 receives. A conical stop, surface 26 extends rearwardly from the annular groove 24 and is complementary to the truncated cone shaped valve seat 31 is formed. When the check valve body I9 is moved forward, the front end 23 thereof meets the cylindrical Bore 32 until the stop surface 26 on the seat 31 * as shown in Fig. 3, with the O-ring 25. engages or rests and forms a Fluid seal with the cylindrical wall of the bore 32.

The check valve body contains an elongated cylindrical chamber J> k in its rear end which terminates at its front end in a circular radial wall which surrounds a cylindrical bore 35. A helical spring 2o is received in the chamber 34 and the adjusting plug or piston 21 acts on it.

With reference to Fig. 3 it is pointed out that that the stop surface. 26 in an annular, radial wall 27 ends, which is spaced from the annular radial wall 28 when the surface 26 is placed on the seat 3I. Farther is an annular space 29 between the check valve body I9, the sleeve-like main body 16 and the adjusting plug 21, which space for connecting the spaces between the radial walls 27 and 28 with the slot passages 33 serves. Finally, the diameter of the rear end of the adjustment plug 21 is essential smaller than the inner diameter of the cavity 8,

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a liquid passage being established between the outlet bore 7 and the slot passages 33 or is formed.

The pressure-responsive valve unit Ij5 according to the invention acts in the following way. It is assumed that the container 1 fluid or Contains liquid under a pressure which is greater than the set pressure of the spring 2o. If the Handle 11 is operated to open the main valve core Io, liquid flows from the outlet bore into the cavity 8, passes through the passages 33 and the flow space 29 and acts on the radial wall 27 around the shut-off valve body 19 to the right in Fig. 3 against the force of the spring 2o to push until the "open" position, which is shown in Fig. 5 is achieved. Thereafter, fluid or liquid flows through the valve unit 13 and from the outlet bore 3o.

When the pressure of the liquid in the container falls below the setting of the spring 2o, the Spring shifts the shut-off valve body to the left and closes the flow through the valve unit 13 from. Penetrations into the container 1 are prevented in this way.

The chamber Z> \ in the shut-off valve body 19 communicates through the bore 35 with the outlet bore 30 in the main body l6, so that the chamber 3 ^ receives a possible countercurrent of liquid or fluid from the outside of the container 1, which can happen while liquid flows out or is drained from the container. If this is to occur, such back pressure in chamber J> k will help the spring to close the valve unit and prevent back flow into the container. this

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can be of particular advantage when having a majority of containers holding different types of fluid contained, can be used to achieve a gas mixture. In such cases it happens it often happens that the fluid pressure in a container is lower than the internal pressure in the common line which is capable of receiving liquid from another container to flow into the container with the lower pressure. With the pressure-responsive valve unit I3 according to the invention, such backflow is prevented.

The pressure setting for the valve unit 13 is by simply screwing the adjusting plug 21 reached in or out of the sleeve-like main body 16 and thus given the desired response. The adjusting plug or piston 21 is fixedly attached by the provision of an adhesive 22 between it and the main body 16. The response pressure for the valve arrangement IJ is specified before the valve unit is installed in the cavity 8 is, in this way the skill requirement for the worker at the operating site is reduced and kept as low as possible and there is no risk of thread damage. the The valve unit is simply screwed, for example into a suitable part, which the slot passages 33 with access to a known pressure source of the desired height. The adjustment plug or piston 21 is then rotated until the spring 2o applies the desired pressure the shut-off valve body 19 pushes open.

It should be noted that the diameter of the central bore 35 in the locking body 19 is much smaller

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BAD ORIQINAL;

than the diameter of the outlet hole J5o in the main body 16 so that the end face of the check valve body the outlet hole is exposed 3 °. There is an advantage to this arrangement therein, if desired, to fill the container 1 through the housing arm or housing supports 9.

In Figs. 6 and 7 there is a filling device 37 shown, which have a collar-like collar 39 or Includes socket which is provided with a rim 38 and is screwed onto the arm or socket 9. The collar or neck 39 carries a flanged sleeve or such a nozzle 4o, which is attached to the End of a filling tube 36 is attached, in which front end a push rod 41 attached telescoping and forward with the help of a spring of much greater strength than the spring 3 ° the Valve unit I3 is pressed.

The cylindrical end of the push rod 41 has a smaller diameter than the outlet bore 3o, but larger than the central bore 35 · When the collar 39 is in the housing arm or housing connector is screwed, the front end of the push rod 41 engages the front surface of the check valve body 19 and opens it against the spring 2o, as shown in FIG. This is followed by the filling process of the container 1 carried out. When the filling has been carried out, the nozzle 39 is removed. Of the Stop valve body 19 sits on its seat in the closed position. Through the attachment the push rod so that it is biased by the spring 42, any possible damage to the Shut-off valve body I9 avoided.

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The above-described arrangement for opening the valve unit 13 during filling is the The need for the prior art valve as shown in FIG. 1 is superior. Partly because the Need to pull the check valve body is avoided. In the arrangement according to the invention the check valve body 19 is pushed and not pulled to cause the opening. This can be easier to perform from a mechanical point of view .

A second embodiment of the pressure responsive Valve unit according to the invention is shown at 13 * in FIG. The embodiment is designed so that during a filling process in the same way as shown in Fig. 6 and 7, can be proceeded. In addition, however, the valve unit 13 'with the aid of a suitable rotary tool to move the check valve body in the open position.

According to Fig. 8, the valve unit 13 'comprises a Main body 16 'which is identical to main body 16 with the exception that radial wall 28' has a protruding pin 43 in a socket molded therein wearing. The fluid enters the chamber in the main body 16 'through the slot openings 33 '· A shut-off valve body 19' is housed in the chamber.

The check valve body 19 'is the same as the valve body 19 with the exception of two features. First, the valve body 19 'has a swash plate or cam surface 45 molded thereon which fits into the radial wall. 27 ¹ rises. Second, the rear portion 44 of the central bore 35 'in the check valve body 19' has an irregular shape, e.g.

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a hexagonal shape to accommodate a suitable turning tool. By introducing such a Tool, not shown, in the bore part 44 and its rotation slides the cam surface 45 on the protruding Pin 43 and the main valve body 19 ' is moved in its open position. When the valve body 19 'is sufficiently rotated so that the protruding pin rests on the annular wall 27 ', the valve body is in its open position held back. If desired, the valve body 19 'is in the opposite Direction rotated, wherein the coil spring 2o is then effective to close the valve.

The protruding pin 43> so can serve a different purpose if so desired. In particular, the length thereof can be related to the degree of desired compression or compression for the coil spring 2o are brought. If this is the case is done, the adjustment plug 21 is easily screwed into the sleeve-like main body 16 'until he lays against the protruding pin. The pin is arranged to be attacked can. With the adjusting plug 21, which is set in this way, the compression spring 2o wants the desired pressure and the valve is set to open at the preselected pressure level or pressure value.

Many modifications and changes of the invention are of course possible.

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ORlOlNAl INSPECTED

Claims (8)

♦ DÜSSELDORF, PL.-1NG. WALTER KUBORN? L.-PHYS. DR. PETER PALGEN ■ i DÜSSELDORF LVANYSTRASSE 2. TELEPHONE 632727 ISSPARKASSE DÜSSELDORF NO. 1014463 TSCHE BANK AG., DÜSSELDORF 2918207 TSCHECK ACCOUNT: COLOGNE 115211-504 Kabushiki Kaisha Neriki in Amagasakishi Hyogoken (Japan) Claims. y valve arrangement for attachment to a fluid or liquid container, characterized in that; a) that in a valve housing with a cavity therein, the outer end of the cavity is open and that the inner end thereof for receiving fluid or liquid connected from the named container is; b) that a pressure-responsive valve unit is located in or received by the cavity where the valve unit is: a sleeve-like main body which is detachably or removably fastened in the cavity, which main body has a chamber in the inner end part, which leads to the inner end of the cavity is open, an outlet bore extending from the outer end of the main body to the chamber, and a valve seat disposed around the inner end of the outlet bore in the chamber is j c) that an adjustment plug or piston is removably disposed in the open end of the chamber; 030Ö11 / OS25 ORIGINAL INSPECTED COPY d) that a shut-off valve body is airtight and slidably received or arranged in the chamber the check valve body has a central bore therethrough which defines the front end thereof connects to the area between the shut-off valve body and the end wall of the adjustment plug, and a stop surface on the front part thereof, which can be engaged with the valve seat, and a comprises radial wall spaced rearwardly from the stop surface; e) that the shut-off valve body is in sealed engagement with the main body, when the stop surface is in engagement with the valve seat, and that the inner part of the Main body passages or passages for transferring fluid or liquid from the inner End of the cavity facing the region of the chamber in front of the radial wall; f) that a suspension is provided between the end wall of the adjusting plug and the shut-off valve body and is arranged to press the stop surface into engagement with the main body, wherein the adjustment plug in the axial direction of the main body is adjustable * to adjust the pressure exerted by the suspension on the shut-off valve body; g) that with this arrangement the check valve body is normally in engagement with the valve seat stands to the valve unit in the closed state to keep the shut-off valve body movable against the adjusting plug wall in order to close the valve unit open when the fluid .bzw. Fluid pressure a greater value than that allowed by the passages Has adjustment and acts on the radial wall, and the shut-off valve body through again The suspension is pressed onto the seat to close the valve unit when the value of the Fluid or liquid pressure falls below the setting of the suspension. 2. Valve arrangement according to claim 1, characterized in that the inner end parts of the cavity and the main body on both sides are threaded and the outer end portions are then unthreaded and are cylindrical and furthermore comprise seals, which between the outer, smooth, cylindrical end portions of the cavity and the main body are located. 3. Valve arrangement according to claim 2, characterized characterized in that the bores in the main body have an irregular shape for receiving a rotary tool for use in installing and removing the valve assembly. 4. Valve arrangement according to claim 2, characterized in that a first seal which be carried by the shut-off valve body on the front end part to form a fluid seal, when the stop surface engages the valve seat, and that a second seal between the rear part of the check valve body and the cylindrical wall of the Einste11stopfens 5. Valve arrangement according to claim 1, characterized in that ι indicates that the inner end portion of the chamber and the exterior of the cylindrical side wall of the adjustment plug or adjusting piston are provided with thread 03O011 / 0S25 ORIGINAL INSPECTED and that a space between the main body and the adjustment plug for attaching an adhesive is provided to secure the parts against relative rotation. 6. Valve arrangement according to claim 1 / characterized in that the central bore through the The shut-off valve body is aligned with the outlet bore, but has a smaller diameter than this, and that the outlet bore is aligned with the open end of the cavity, the front end of the shut-off valve body can be gripped with the aid of a push rod, which is inserted into the cavity is inserted and is guided through the outlet bore, the shut-off valve body with the help the push rod can be pushed into an open position against the action of the suspension. 7. Valve arrangement according to claim 1, characterized in that the shut-off valve body is rotatable and has a cam surface and additionally includes a pin which is in the chamber of the main body is attached and positioned or positioned so as to be attached to the cam surface attack when the check valve body is rotated and that the cam surface and the pin are arranged so that when the shut-off valve body is rotated in a first direction, the The cam surface and the pin cooperate to lift or loosen the check valve body to cause, and that when rotating the shut-off valve body in the reverse direction by the suspension is pressed onto the seat with the central bore aligned with the bore in the main body Ö30Ö1 1 / 0B2 5 and the bore has an irregular shape for receiving a rotary tool inserted therein through the bore. 8. Valve arrangement according to claim 1, characterized in that the passages in the inner part of the Main body are at least formed by an elongated slot extending in the axial direction the inner parts extends and is in communication with the chamber. 9 · Valve arrangement according to claim 1, characterized characterized in that the check valve body has an elongated or enlarged chamber in the rear Part thereof to receive the suspension, the valve body chamber being substantially larger in diameter than the central bore. 030Ö11 / OS26