Tank Valve Assemblies and Methods
Embodiments can provide tank valve assemblies and associated methods. According to one aspect, a valve assembly can be provided. The valve assembly may include a valve body defining a hollow bore extending therethrough. A plunger having at least one passageway formed longitudinally partially therethrough and a spring associated with the plunger may be provided. The plunger is slideably positioned within the hollow bore of the valve body and retained in a closed position by a force exerted by the at least one spring against the valve body. The valve assembly may include a valve body o-ring positioned within the hollow bore, wherein the valve body o-ring substantially contacts the surface of the plunger when the plunger slides within the hollow bore of the valve body.
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This application claims the benefit of U.S. Provisional Application No. 61/242,187, filed on Sep. 14, 2009, entitled “Tank Valve Assemblies,” which is incorporated herein by reference in its entirety.
FIELD OF THE INVENTIONThis invention relates generally to valves, and more specifically to tank valve assemblies.
BACKGROUND OF THE INVENTIONLiquid tanks, such as those used during wine preparation processes, have undergone significant advances. For example, tank materials have changed, thus permitting the development of additional or improved wine preparation techniques. One such improvement is in the materials from which wine tanks are formed, such as polymers, which can further permit tank molding and the addition of other features or devices with the tanks.
During the preparation of wine (or other materials), and during storage, there is a need to extract a sample, such as for tasting or chemical testing. In addition, there also exists a need to introduce gases into the tanks, such as during sparging or micro-oxygenation, or to introduce other materials, such as introducing additives or topping-off the liquid volume in the tank.
Accordingly, there exists a need for improved valve assemblies, which can be advantageously formed or otherwise installed in a tank wall or tank lid. There exists a further need for valve assemblies that reduce contamination, clogging, and/or sediment flow, and that can be cleaned without introducing foreign materials into the corresponding tank.
SUMMARY OF THE INVENTIONEmbodiments can provide tank valve assemblies and associated methods. According to one aspect, a valve assembly can be provided. The valve assembly may include a valve body defining a hollow bore extending therethrough. A plunger having at least one passageway formed longitudinally partially therethrough and a spring associated with the plunger may be provided. The plunger is slideably positioned within the hollow bore of the valve body and retained in a closed position by a force exerted by the at least one spring against the valve body. The valve assembly may include a valve body o-ring positioned within the hollow bore, wherein the valve body o-ring substantially contacts the surface of the plunger when the plunger slides within the hollow bore of the valve body.
According to another aspect, a method of installing a valve assembly can be provided. In one embodiment, the method may include positioning a valve body through a wall in a liquid container; threadably securing the valve body to the liquid container; and positioning a plunger and at least one spring within a hollow bore of the valve body, such that the spring retains the plunger in a closed position until acted on, and a valve body o-ring substantially contacts the surface of the plunger when the plunger slides within the hollow bore of the valve body. In one embodiment, the valve body may be secured to the liquid container by a bulkhead type assembly. In another embodiment, the valve body may be secured to the liquid container using a container insert secured to the liquid container and threading the valve body into the container insert. In yet another embodiment, the valve body or a container insert may be molded into a wall of the liquid container.
According to yet another aspect, a liquid container lid with a valve body can be provided. In one embodiment, a valve body can be secured to a liquid container lid. The valve body has a hollow bore extending therethrough and a valve body o-ring positioned within the hollow bore. A plunger can be provided that has at least one passageway formed longitudinally partially therethrough and at least one spring associated therewith. The plunger is slideably positioned within the hollow bore of the valve body and retained in a closed position by a force exerted by the spring against the valve body. The valve body o-ring substantially contacts the surface of the plunger when the plunger slides within the hollow bore of the valve body.
Additional apparatus, methods, features, and aspects are realized through the techniques of various embodiments described herein. Other embodiments and aspects are described in detail herein and are considered a part of that disclosed, and other features will be understood with reference to the description and to the drawings.
Having thus described the invention in general terms, reference will now be made to the accompanying drawings, not necessarily drawn to scale, which are included to provide further understanding of the invention. The drawings are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:
Example embodiments will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one to variously employ the present invention in virtually any appropriately detailed structure. Like numbers refer to like elements throughout.
Example embodiments disclosed herein are directed toward valve assemblies for use with liquid tanks or other liquid containers. The valve assemblies may be operable to remove liquid from the associated tank, such as for inspection, sampling, and the like. The valve assemblies may also be operable to introduce matter into the associated tank, such as to introduce gas or liquid. In one example embodiment, the valve assemblies may be manufactured into, or otherwise integrated with, a polymer wine tank for maturing and/or storing wine.
According to various embodiments, the valve assembly can include a valve body permitting integration with newly manufactured tanks and/or retrofitting with existing tanks, and a spring actuated plunger slideably positioned within the valve body and having at least one passageway extending longitudinally through the plunger to selectively permit fluid flow therethrough. Moreover, according to one embodiment, the valve assembly can include at least one o-ring positioned within the valve body such that the plunger is in slideable communication therewith. The o-ring can serve both to seal the valve body and plunger, restricting flow through the valve body only through the plunger when in an open position, and to cleanse the one or more plunger passageways as the plunger slides across the o-ring. This type of cleansing can be quite beneficial when used in a wine tank because sediment and other tank debris can be removed from the valve assembly during and after use. Moreover, in one embodiment, the exterior end of the plunger can be configured to include a nipple fitting to permit attaching external devices, such as a hose, to the end of the plunger. For example, the external hose may permit introducing additional gas and/or fluid, such as during sparging, or may serve as an extension when extracting fluid from the tank. Additional features can be included as part of the valve assembly construction, as further discussed herein.
According to one embodiment, the valve body can be configured as a bulkhead-type fitting, such that the valve body includes threads insertable through a tank for receiving a bulkhead nut on the interior of the tank. In this embodiment, the valve assembly can be affixed to a tank after assembly.
In another embodiment, a valve assembly can include a threaded tank insert molded into a tank during manufacturing. The valve body can include complementary threads that permit the valve body to be screwed into the threaded tank insert.
Accordingly, example valve assembly embodiments, configured as described herein or in another similar manner, permit simple and cost-effective construction and installation, into newly manufactured tanks and/or retrofitting into pre-existing tanks In addition, the unique configuration of the valve assembly, and especially the placement of the o-ring, permits simple operation and effective self-cleansing and sealing of the valve assembly during use, and permits rinsing the passageway of the valve assembly with water or other liquid from the exterior. Moreover, its simple installation allows the valve assembly to be adapted for various uses, such as when installed at one or more positions on the wall of the tank for sampling and/or sparging, or when installed on a tank lid for sparging.
The example valve body 105 illustrated in
The valve body 105 of this example embodiment may be formed from any tank compatible material, such as, but not limited to, natural or synthetic polymer (e.g., Polyoxymethylene, also referred to as Delrin by DuPont Chemicals), metal (e.g., stainless steel, aluminum, titanium, brass, etc.), any combinations thereof, and the like. It is appreciated that certain materials may not be suitable for some applications, and therefore this list is intended as illustrative only; the design choice can be dependent upon the application of the valve assembly, the tank, and their intended use.
The example valve assembly 100 illustrated in
As illustrated, in one embodiment, the plunger 110 can further include a tip 130 at its exterior end (oriented exterior to the tank and opposite the interior end), which may be configured for adaptation with one or more external devices, such as, but not limited to, a hose, a tap, a spigot, a spout, a plunger actuating handle, a gas sparging device, and the like. As illustrated in
The plunger 110 may be formed by drilling a rod to form at least one passageway through the approximate center of the plunger and one or more cross-drilled holes across the plunger and intersecting with the passageway (as illustrated in
Although
In other embodiments, the spring may be retained by other means, such as being affixed to the valve body 105 and/or to the plunger 110, integrated with the valve body 105 and/or with the plunger 110, or by any other means.
In one example embodiment, the plunger collar 210 may have an outer diameter the same or slightly less than the inner diameter of the retaining portion of the valve body 105, such that the plunger collar 210 may extend into the valve body 105 when in an open position. In yet another embodiment, the plunger collar 210 and/or the inner diameter of the valve body 105 may include a chamfered edge to ease insertion of the plunger collar 210 into the valve body 105 while opening.
In another embodiment, the plunger collar 210 may facilitate opening the valve assembly 100. For example, the plunger collar 210 may provide a surface area against which an operator's finger or a specially adapted tool can be placed. As another example, the plunger collar 210 may further facilitate attachment of one or more specialized devices, such as, but not limited to, a hose, a tap, a spigot, a spout, a gas sparging device, and the like.
In addition, the valve body 105 includes a valve body o-ring 220 positioned within the bore of the valve body 105 such that it will be in contact with the plunger 110, as illustrated in
Another purpose served by the valve body o-ring 220 is to further seal the valve assembly 100 when the plunger 110 is in an open position, restricting fluid from passing through the bore. Existing conventional valve assemblies have been configured such that an o-ring or other sealing mechanism is positioned on the end of the plunger. In these conventional devices, when the plunger is in an open position, fluid may flow through the plunger and around the plunger.
Yet another purpose of the valve body o-ring 220 configured in the manner illustrated is to provide a means for self-cleansing the cross-drilled holes 215. During operation, when releasing an extended plunger 110 from an open position to a closed position, the cross-drilled holes 215 pass the valve body o-ring 220, such that the tight seal created by the valve body o-ring 220 scrapes the plunger 110 and the cross-drilled holes 215, causing any sediment or other debris to be released back into the tank. In an embodiment in which the valve assembly 100 is used with a wine tank, removing or otherwise preventing sediment and other debris may be very desirable. For example, when using a valve assembly 100 to extract sample wine from the tank, it may be desirable to avoid, or at least to reduce, the amount of sediment in the sample. In another example, when using a valve assembly 100 to introduce additional gas and/or fluid to the tank, such as by using a gas sparging device or any other means, excessive debris may clog or otherwise interfere with the introduction device being used. A valve assembly 100 configured with a valve body o-ring 220 in this manner beneficially cleanses the plunger and passageway to avoid these undesirable circumstances, with no additional cleansing or prevention steps required by the operator.
Yet another purpose served by the advantageous placement of the valve body o-ring 220 is to permit flushing the plunger 110 and valve body 105 when in a closed position, whereby the plunger prevents fluid or debris within the valve body from entering the tank. Instead, the valve body o-ring 220 seals the bore of the valve body 105 from the interior of the tank, causing any fluid or debris to run through the passageway(s) 305 of the plunger 110 or through the bore of the valve body 105 around the plunger 110, and out of the valve body 105 external to the tank. For example, after sampling tank contents, a user may connect a hose with water or other fluid to the tip of the plunger 110 and flush any undesirable contents from within the valve body 105 and plunger 110. Without the inclusion of a valve body o-ring 220 as described herein, an attempt at flushing the valve assembly in this manner would cause fluid and/or debris to be forced into the tank, which may be largely undesirable, depending upon the contents and purpose of the tank.
As can be seen in the embodiment illustrated in
While the plunger 110 is described as being inserted after securing the bulkhead nut 150, in other embodiments, the plunger may be inserted and secured into the valve body 105 prior to being inserted through the tank 505 and being secured by the bulkhead nut 150. Similarly, for embodiments that do not use a bulkhead type assembly, the plunger 110 may be installed into a valve body already molded into or otherwise integrated with the tank 505, or a valve body may first be threaded into an already molded into or otherwise integrated NPT fitting, into which the plunger may be installed. As stated above, various valve assembly configurations and associated installation techniques may be employed.
According to one embodiment, the valve assembly 100 may be installed to have a slight downward angle relative to the wall of the tank 505, to facilitate draining the liquid out of the valve assembly 100 and reducing undesirable back flow contamination into the tank 505. In example embodiments, this may be accomplished by forming a slightly angled recess within the tank wall, such that the bulkhead type valve assembly 100 will be secured at the same angle as the recess. In other embodiments, however, one or more angled washers, shims, or the like may be used to create the angle desired. In yet other embodiments, the valve body may be molded or otherwise integrated into the tank at the desired angle during manufacture. Similarly, in other embodiments, an NPT fitting may be molded or otherwise integrated into the tank at an angle, such that a complementary valve body can be threadably installed at the desired angle. It is appreciated that in other embodiments, the valve assembly 100 may not be installed at a downward angle, but instead may be installed substantially perpendicular to the tank wall, or at any other angle.
The valve plunger 610 of this embodiment can be configured in a manner similar to that described above with reference to
The valve body 605, illustrated in closer detail by
The interior of the valve body 605 includes a bore extending therethrough and having a first diameter through which the plunger 610 is slideably inserted, and retaining the portion having a second diameter greater than the first diameter, creating a seat 630 for retaining a spring for actuating the plunger 610, in a manner similar to that described with reference to
Inside the valve body 605 is a valve body o-ring 620 positioned within the bore of the valve body 605 such that it will be in contact with the plunger 610. The valve body o-ring can be configured and can function in a manner similar to that described with reference to
The tank insert 650, also shown in more detail in
The valve body 605, plunger 610, and/or tank insert 650 of this example embodiment may be formed from any tank compatible material, such as, but not limited to, metal (e.g., stainless steel, aluminum, titanium, brass, etc.), natural or synthetic polymer (e.g., Polyoxymethylene, also referred to as Delrin by DuPont Chemicals), any combinations thereof, and the like. In one embodiment, the tank insert 650 can be made of brass, such as if the valve body is made of stainless steel, to prevent thread galling (i.e., adhesion or seizure of the threads). In other embodiments, the valve body 605 and the tank insert 650 can be made of any metals having dissimilar hardness to prevent thread galling. As stated above, it is appreciated that certain materials may not be suitable for some applications, and therefore this list is intended as illustrative only; the design choice can be dependent upon the application of the valve assembly, the tank, and their intended use.
It is appreciated that in various embodiments, because the lid 1205 may not be in constant contact with tank liquid, the valve assembly 1200 may not need to include each of the components as described with reference to the example valve assemblies above. For example, according to one embodiment, the valve assembly 1200 may not include an o-ring between the valve body and the lid, like the tank o-ring described in the previous embodiments. According to another embodiment, the valve assembly 1200 may not include a valve body o-ring inserted into the valve body and in communication with the plunger. In one embodiment, instead of being inserted into the valve body, the plunger may include an o-ring at its interior end, such that it moves with the plunger, sealing the valve assembly 1200 when in a closed position. It is appreciated though, in other embodiments, one or more of these components may be included in the valve assembly 1200, serving the same or similar purposes as described above.
Accordingly, described herein are various embodiments of one or more valve assemblies that can be used with a tank. The valve assemblies permit extracting the tank's contents (such as for sampling) through the use of a unique valve design and installation. Further, upon depressing and releasing the valve assembly, the unique inclusion and placement of one or more valve body o-rings can facilitate cleansing the valve assembly, reducing sediment or debris, and avoiding clogged valves, as may otherwise occur, while also sealing the valve assembly when in both an open and closed position. The placement of the valve body o-rings also permits flushing the valve with an external fluid when in a closed position without introducing the fluid to the tank when in a closed position.
The valve assemblies may also be used to introduce additional materials to the tank, such as the introduction of gas during sparging processes, or the introduction of additional liquids. Again, the unique inclusion and placement of the valve body o-ring prevents unwanted sediment or debris from flowing back into the device used to introduce the additional materials. Moreover, the various valve assembly techniques create unique manufacturing advantages, both by creating substantial cost savings by reducing the cost and number of components and the simplicity of installation. In addition, various valve assembly embodiments can be retrofitted to existing tanks, both into tank walls and/or tank lids, creating new opportunities for widespread use.
While the above example embodiments have been described with reference to wine tanks used during preparation and/or storing, tanks serving other purposes may also be prepared to include valve assemblies similar to those described herein. Accordingly, the subject matter disclosed herein is not intended to be limited to wine preparation devices or techniques, but rather is intended for widespread application.
Many modifications and other embodiments related to that described herein will be apparent having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the subject matter described herein is not to be limited to the specific embodiments disclosed and that numerous insubstantial variations, changes, substitutions, and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims
1. A valve assembly, comprising:
- a valve body defining a hollow bore extending therethrough and comprising a valve body o-ring positioned within the hollow bore;
- a plunger comprising at least one passageway formed longitudinally partially therethrough; and
- at least one spring associated with the plunger;
- wherein the plunger is slideably positioned within the hollow bore of the valve body and retained in a closed position by a force exerted by the at least one spring against the valve body; and
- wherein the valve body o-ring substantially contacts the surface of the plunger when the plunger slides within the hollow bore of the valve body.
2. The valve assembly of claim 1, wherein the valve body comprises an interior portion adapted for positioning within an interior of a liquid container, and an opposing exterior portion adapted to extend through a wall of the liquid container and external to the liquid container; wherein the plunger comprises an interior end and an exterior end; wherein when in an open position the interior end extends from the interior portion of the valve body and further into the interior of the liquid container.
3. The valve assembly of claim 1, wherein the plunger further comprises at least one cross-drilled hole formed through the plunger and in fluid communication with the passageway; and wherein when moving between the closed position and an open position the at least one cross-drilled hole passes the valve body o-ring.
4. The valve assembly of claim 3, wherein the plunger comprises an interior end and an exterior end, the at least one cross-drilled hole located proximate the interior end and the passageway opening proximate the exterior end; and wherein when the plunger is in the closed position the valve body o-ring at least partially seals the at least one cross-drilled hole from the interior of the liquid container, and when the plunger is in the open position the at least one cross-drilled hole is in liquid communication with the interior of the liquid container.
5. The valve assembly of claim 1, wherein the plunger comprises a tool fitting at its exterior end adapted for receiving one or more tools used with the valve assembly.
6. The valve assembly of claim 5, wherein the one or more tools comprise at least one of: (a) a gas hose; (b) a sparging hose; (c) a liquid supply; (d) a tap; (e) a spigot; (f) a spout, or (g) an actuating handle.
7. The valve assembly of claim 1 wherein the plunger comprises a nipple connector at its exterior end adapted for slideably receiving one or more devices thereover.
8. The valve assembly of claim 1, wherein the valve body is adapted for installation in a side wall of a liquid container.
9. The valve assembly of claim 1, wherein the valve body further comprises threads along a portion of its body, and further comprising a bulkhead nut for threadably securing the valve body to a liquid container when threaded over the threads of the valve body.
10. The valve assembly of claim 1, wherein the valve body further comprises threads along a portion of its body adapted for threadably securing to complementary threads formed in a liquid container.
11. The valve assembly of claim 1, wherein the valve body further comprises external threads along a portion of its body; and further comprising a container insert adapted for securing to a wall of the liquid container and comprising inner threads adapted to receive the external threads of the valve body for threadably securing the valve body to the liquid container.
12. The valve assembly of claim 1, wherein the valve body is adapted for installation in a lid of a liquid container.
13. A method of installing a valve assembly within a liquid container, comprising:
- providing a valve body defining a hollow bore extending therethrough and comprising a valve body o-ring positioned within the hollow bore;
- providing a plunger comprising at least one passageway formed longitudinally partially therethrough;
- providing at least one spring associated with the plunger;
- positioning the valve body through a wall in a liquid container;
- threadably securing the valve body to the liquid container; and
- positioning the plunger and the at least one spring within the hollow bore of the valve body, such that the at least one spring retains the plunger in a closed position until acted on, and the valve body o-ring substantially contacts the surface of the plunger when the plunger slides within the hollow bore of the valve body.
14. The method of claim 13, wherein positioning the valve body through the wall in the liquid container further comprises:
- securing a container insert to the wall of the liquid container, wherein the container insert comprises inner threads adapted to receive external threads of the valve body; and
- threadably securing the valve body to the container insert.
15. The method of claim 13, wherein the container insert is molded to the wall of the liquid container.
16. The method of claim 13, wherein the valve body has an interior portion forming a bulkhead type fitting, and wherein positioning the valve body through the wall in the liquid container further comprises:
- positioning the interior portion of the valve body within the liquid container with an exterior threaded portion extending through the wall of the liquid container to the exterior; and
- threadably securing a bulkhead nut over the exterior threaded portion securing the wall of the liquid container between the bulkhead nut and the interior portion of the valve body.
17. The method of claim 13, wherein positioning the valve body through the wall in the liquid container further comprises:
- molding the valve body in a wall of the liquid container; and
- positioning the plunger within the valve body.
18. A liquid container lid, comprising:
- a valve body secured to the liquid container lid and defining a hollow bore extending therethrough and comprising a valve body o-ring positioned within the hollow bore;
- a plunger comprising at least one passageway formed longitudinally partially therethrough; and
- at least one spring associated with the plunger;
- wherein the plunger is slideably positioned within the hollow bore of the valve body and retained in a closed position by a force exerted by the at least one spring against the valve body; and
- wherein the valve body o-ring substantially contacts the surface of the plunger when the plunger slides within the hollow bore of the valve body.
Type: Application
Filed: Sep 14, 2010
Publication Date: Mar 17, 2011
Applicant: Flextank, Inc. (Athens, GA)
Inventor: John Smeaton (Athens, GA)
Application Number: 12/881,502
International Classification: B65D 51/00 (20060101); F16K 15/00 (20060101); B23P 19/04 (20060101);