The present invention generally relates to compressor system filter servicing, and more particularly, but not exclusively, to tools used to capture and/or remove compressor filters from filter housings.
Providing tools useful to remove filters from filter housings remains an area of interest. Some existing systems have various shortcomings relative to certain applications. Accordingly, there remains a need for further contributions in this area of technology.
One embodiment of the present invention is a unique tool useful to service a compressor. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for servicing compressor system filters. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.
For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended. Any alterations and further modifications in the described embodiments, and any further applications of the principles of the invention as described herein are contemplated as would normally occur to one skilled in the art to which the invention relates.
With reference to
The compressor 52 can take on any variety of forms, and in one nonlimiting embodiment is a contact cooled compressor useful to compress a flow of air. The separator 54 is used to separate the mixed flow 60 to produce a cleaner flow compressed gas 62 and a flow of coolant/lubricant 64. The filter 56 can return a cleaner flow of lubricant/coolant 66 to the compressor 52 while retaining contaminant in a filtering media. Though the compressor system 50 is shown with just a compressor 52, separator 54, and filter 56, other embodiments can include further devices, such as dryers, etc.
Turning now to
Although the embodiment discussed above in
The arms 90 include an engagement surface 94 typically but not always located at the end which is used to press against the inside of the filter element 72 as the arms 90 are deployed. The illustrated embodiment depict one nonlimiting form of an engagement surface 94 in the form of contact pads 96 which are attached to the arms 90 through a pivoting arrangement. The contact pads 96 can include any type of material and arrangement sufficient to engage and capture the filter element 72 for removal from the housing 68. In one nonlimiting form the contact pads 96 can be rubber pads.
Though the illustrated embodiment depicts the capture tool 80 with two separate arms 90, any number of arms can be used. In one nonlimiting embodiment, the capture tool 80 includes three separate arms that can be arranged equidistant from one another. Additionally and/or alternatively, the arms 90 can provide about 18″ diameter in the deployed position when used to engage the inner side of the filter element 72.
In one form the central shaft 86 includes a registration surface which is complementary to a registration surface in the collar 88, where the interaction of the registration surfaces enables relative movement between the collar 88 and the central shaft 86. In one nonlimiting form the central shaft 86 is threaded and is structured to engage a threaded nut in the collar 88.
The collar 88 can take on a variety of forms useful to move along the central shaft 86 and actuate the arms 90 between their retracted and deployed positions. In one form depicted in
The collar 88 can, but need not, include and/or be connected to the base 84 with an energy storage device. In one form the energy storage device is a spring 102. The energy storage device can be used to oppose motion of the collar 88 in a certain direction. For example, the spring 102 can be attached to the base 84 and pre-loaded to force the arms 90 in a deployed condition so that during removal of the filter element 72 from the housing 68 the capture tool 80 maintains a positive grip on the filter element 72 to prevent inadvertent retraction of the arms 90 and subsequent dropping of the element 72. Other conditions are also contemplated.
The filter capture tool 80 can include a connection point useful to engage the filter removal tool 82. Such a connection point can take on many forms, one nonlimiting example of which is found in ring 104 illustrated in
Various embodiments are contemplated for either a connection point associated with the filter, a mechanism coupled to the filter, or the filter capture tool 80. Any of the connection types contemplated for one applies equally to the others. Thus, in some forms while it is contemplated for the filter element to have three D-rings on the top for attachment to the removal tool (either aligned in a line, side by side, etc to provide various attachment points), it would also be contemplated that the same arrangement of multiple D-rings could also be used for the other connection points associated with the filter.
An anchor point formed in the base 106 can take on a number of different configurations, shapes and/or sizes. In one nonlimiting example, the filter removal tool 82 can be attached to the holes 78 of the housing 68 through use of the same bolt used to secure the cover 70 to the housing 68. The anchor points can alternatively be a lug or other suitable device that extends from the base 106 or the housing 68 to provide attachment of the base 106. In those cases using a bolt or other suitable device, such a bolt can be inserted into holes 114 formed in the base 106. In another additional and/or alternative embodiment the anchor points can include abutment surface whether or not formed as an enclosed passage. For example, an anchor point can take the form of a concave half-moon shape in lieu of a fully enclosed hole.
Anchor points whether or not in the form of bolts and bolt holes can be a single attachment/load point, but other embodiments can take on any number of attachment points or load paths. To set forth just one nonlimiting example, four holes 114 are depicted in the illustrated embodiment of the base 106, but fewer or more holes 114 can be provided. Furthermore, though more than one anchor point can be provided, not all anchor points need be used in any given application. In those embodiments which include more than one anchor point, the various anchor points can, but need not, be identical as in the illustrated embodiment. For example, one anchor point in a multi-anchor point embodiment can be a through-hole to receive a bolt while the other anchor point is a lug. Other variations are also contemplated.
Depending on the specific configuration of the filter housing 68, the anchor point(s) can be tailored to match corresponding attachment points in the compressor filter housings 68. For example, the holes 114 can be arranged to be adapted to any different number of housings 68. For example, the holes 114 on the near side of the base 106 (i.e. those with the lead lines attached) can be spaced apart to fit one type of housing 68, the holes on the other size of the base can be spaced apart to fit another type of housing, etc. The base 106 is depicted as a rectangular box having an open interior with cutouts formed in each side, but other variations are also contemplated herein. Given the nature of the loads imparted to the base 106 during operation of the tool 82, however, the base 106 is structured to carry both normal loads and torques as the filter element 72 is extracted from the housing 68.
The extension member 108 is capable of being moved relative to the base 106 between a retracted position (best seen in
The extension member 108 can be enclosed in a covering, or can rest freely underneath the base 106 when in the retracted position. For example,
The arm 112 is used to reach from the base 106 to the filter element 72 when removing the element 72. The arm 112 can, but need not, be pivoted about the base 106 to allow the filter element 72 to be moved from an initial extraction position starting over the filter housing 68 just above its nested position, to a position in which the filter element 72 can be lowered into a container (e.g. a rubbish container) positioned to the side of the housing 68. The arm 112 can alternatively and/or additionally be structured to pivot about the extension member 108. The pivoting movement, whether about the base 106 or about the base 106 and extension member 108, is illustrated and discussed further below in
In some forms a lock 120 can be provided to provide positive locking force to discourage relative movement of the extension member 108 and the base 106. In one form the lock 120 can be used to discourage movement of the extension member 108 into the retracted position (e.g. the position shown in
The filter removal tool 82 can furthermore include a tank seat 122 useful to engage with the filter housing 68. Such a tank seat 122 can take many forms, can be made of any number of materials, and can be located in one or more positions about the tool 82. In the illustrated embodiment the tank seat 122 is located near the bottom of the tool as shown in
The anchor point can take on an additional form as seen in
The arm 112 can include a telescoping feature made possible via a bearing construction. Two such bearings 124 are shown in
The arm 112 can also include a hook or other suitable device 112 useful to engage the filter capture tool 80 and/or any other suitable structure associated with the filter element 72 (e.g. as discussed above) used to remove the filter element 72 from the housing 68.
Features illustrated in the embodiment depicted in
Turning now to
It will be appreciated herein that the filter capture tool 80 and/or filter removal tool 82 can be deployed in many different manners to secure the filter in a nesting position, hoist the filter element 72 from the housing 68, and move the filter element 72 to an extracting position and/or lower the filter onto a support surface from which it can be removed for disposal. As used herein, a nesting position can be used to refer to the position of the filter element 72 being nested into place within the housing 68 prior to removal. The extracting position can be used to refer to the position of the filter element 72 adequate for disposal into a container or intermediate processing platform prior to disposal, for example.
One aspect of the present application includes an apparatus comprising a filter removal tool having: a base having an anchor connection device structured to be coupled to a support for removal of a filter, an extension member structured to extend from the base between a nesting position to an extracting position, the extension member having an axis of extension between the nesting position and the extracting position, a driver interconnected with the extension member and structured to move the extension member between the nesting position and the extracting position upon receipt of a power to drive the extension member, and an arm connected to the extension member and oriented transverse to the axis of extension such that the filter is cantilevered when attached to the filter removal tool, the filter removal tool further configured to pivot the arm about the axis of extension to rotate the filter away from a compressor filter housing, wherein the base of the filter removal tool is structured to support the torque and force loads associated with the cantilevered condition.
A feature of the present application includes wherein the anchor connection device includes an abutment which a bolt can be engaged to secure the base to the support.
Another feature of the present application includes wherein the anchor connection device is a first movable aperture structured to be movable relative to the extension member.
Still another feature of the present application includes wherein the anchor connection device includes a second movable aperture, the first and second movable apertures structured to accommodate different configurations of the support, and wherein the first movable aperture is pivotable about an axis.
Yet another feature of the present application includes wherein the extension member is a member that linearly extends from the base.
Still yet another feature of the present application includes wherein the extension device is a rack having a plurality of teeth structured to engage a gear driven by work received via the driver.
Yet still another feature of the present application further includes a gearing that can convert a first torque and first speed received by the driver to a second torque and second speed used to extend the extension member.
A still yet further feature of the present application further includes a filter capture tool having a plurality of arms structured to engage an interior surface of a filter, the filter capture tool capable of being connected to the arm of the filter removal tool.
A yet still further feature of the present application includes wherein the filter capture tool further includes a central threaded shaft affixed to a platform, the central threaded shaft having a complementary collar structured to move along a length of the central threaded shaft to deploy the plurality of arms, wherein the filter capture tool is capable of being connected to the filter removal tool via a hook and loop connection, and wherein the filter is a separator element.
Another aspect of the present application provides an apparatus comprising a filter capture tool having a central shaft affixed to a base and a collar structured to move along a length of the central shaft, the central shaft having a shaft registration surface and the collar having a collar registration surface complementary to the shaft registration surface such that relative movement of the collar registration surface to the shaft registration surface enables the collar to move along the length of the central shaft, the filter capture tool further including a plurality of arms that extend from and are pivotably attached to the base, the plurality of arms each including an engagement surface structured to engage an inner surface of a filter used in a compressor system, the plurality of arms connected to the collar via a linkage member.
A feature of the present application includes wherein the engagement surface of each of the plurality of arms is a pivotable pad structured to engage an inner surface of a filter used in a compressor system.
Another feature of the present application includes wherein each of the plurality of arms is connected to the collar via its own linkage member.
Still another feature of the present application includes wherein the collar further includes an actuation member having the collar registration surface to enable movement of the collar along the length of the central shaft.
Yet another feature of the present application includes wherein the shaft registration surface is a threaded formation.
Still yet another feature of the present application includes wherein the actuation member is a threaded nut captured by the collar such that the nut is capable of rotation about the central shaft while the collar does not rotation about the central shaft, and wherein the filter is a separator element.
Yet still another feature of the present application further includes a filter removal tool including an extension member capable of being deployed from a nested position to an extended position, the extension member attached to an arm that is configured to connect to the filter capture tool.
A further feature of the present application includes wherein the filter removal tool further includes a base structured to attach to a filter housing and sustain loads imparted during removal of a filter when the plurality of arms are deployed to engage the filter, and wherein the extension member includes a rod having a rod registration surface.
Yet another aspect of the present application provides a method comprising connecting a filter removal tool to a compressor filter housing, inserting a filter capture tool into the interior of a filter, expanding the filter capture tool to engage a side of the filter, connecting the filter capture tool to the filter removal tool, and raising an arm of the filter removal tool to extract the filter from the compressor filter housing
A feature of the present application further includes pivoting the arm away from the base.
Another feature of the present application includes wherein the filter removal tool further includes an extension member connected to the arm, wherein raising the arm includes extending the extension member.
Still another feature of the present application includes wherein pivoting the arm includes pivoting the extension member away from the base.
Yet still another feature of the present application includes wherein the connecting the filter includes seating a base of the filter removal tool against a flange of the compressor filter housing and aligning an anchor point to bolt holes formed in the compressor filter housing.
Still yet another feature of the present application further includes which further includes installing a bolt used to secure a cover member of the compressor filter housing to secure a base of the filter removal tool to the compressor filter housing, and wherein the filter housing is a separator housing and wherein the filter is a separator element.
While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiments have been shown and described and that all changes and modifications that come within the spirit of the inventions are desired to be protected. It should be understood that while the use of words such as preferable, preferably, preferred or more preferred utilized in the description above indicate that the feature so described may be more desirable, it nonetheless may not be necessary and embodiments lacking the same may be contemplated as within the scope of the invention, the scope being defined by the claims that follow. In reading the claims, it is intended that when words such as “a,” “an,” “at least one,” or “at least one portion” are used there is no intention to limit the claim to only one item unless specifically stated to the contrary in the claim. When the language “at least a portion” and/or “a portion” is used the item can include a portion and/or the entire item unless specifically stated to the contrary. Unless specified or limited otherwise, the terms “mounted,” “connected,” “supported,” and “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, “connected” and “coupled” are not restricted to physical or mechanical connections or couplings.