Conferencia bitcoin stocks
48 comments
Baton de l ethereum prison
This invention relates to a metallic bellows pump that among other things is adapted to pump metered fluids. In the pumping of some fluids particularly those that are corrosive, caustic, acidic or toxic previous piston or diaphragm pumps used to meter the fluid have employed O rings and seals of composition material that are attacked by the fluids and will be eaten away causing leaks and in some cases malfunctions.
Further, with the deteriation of prior art pumps seals, etc. Also some of the prior art pumps cannot withstand high pressures that may be necessary when pumping fluids. In addition, some prior art pumps that are utilized for metering, be it slow or rapid metering, have failed to maintain the proper tolerances necessary. Finally, with the deterioration of prior art pumps or seals therein unnecessary maintenance is required.
It is an object of the present invention to provide a metallic bellows pump without exposed seals that are subject to attack by corrosive, caustic, acidic or toxic fluids during pumping of the fluid.
Another object of the present invention is to provide a metallic bellows pump that may be a single bellows or dual bellows to accomplish the proper pumping of a fluid. A still further object of the present invention is to provide a metallic bellows pump that will not leak during operation due to damage that could be caused by the fluid being pumped. A yet further object of the present invention is to provide a metallic bellows pump that is adapted to act as a metering pump to either pump a relatively small quantity of fluid at lengthy intervals to a relatively large quantity of fluid at short intervals.
Another object of the present invention is to provide a metallic bellows that can withstand high pressures during operation due to the lack of composite material seals in the pump fluid flow stream. A still further object of the invention is to provide a metallic bellows pump that can be adapted to pump natural gas which in the past has broken down lubricants of conventional pumps causing malfunctions. In the present pump the need for lubricants on parts in the fluid flow stream is unnecessary.
These and other objects and advantages will become apparent from the following part of the specification wherein details have been described for the competence of disclosure, without intending to limit the scope of the invention which is setforth in the appended claims. These advantages may be more clearly understood from the following detailed description and by reference to the drawings in which:. Each pump 10 includes an outer annular metallic cover or casing At the outer end 14 of each casing 12 there is an annular metallic end closure plate 16 that is forced or wedged into the casing 12 to close off the pump.
The plates 16 may also be affixed to the casing 12 by conventional welding. In the illustrations of FIGS. This mounting supports the pumps 10 as they are suspended inwardly from the frame The inner end 22 of the casing 10 also includes an annular metallic inner end closure plate or plug Mounted within each plug 24 is an annular bearing 26 with a horizontal bore 28 passing therethrough.
Mounted within each casing 12 is an annular metallic bellows designated The bellows 36 each include a number of annular convolutions 38 one jointed to the next by an inwardly recessed web portion Due to the construction of the bellows 10 and the thickness of the metal used to form the convolutions 38 and connecting webs 40 the bellows each are resilient and flexible and may be contracted and expanded on a horizontal plane.
The inner end 46 of the bellows 36 is positioned within the end 22 of the casing 12 and clamped in place by the annular inner end closure plate Thus, there is present a hollow closed bellows 36 that, by means to be described may be reciprocated horizontally inwardly and outwardly wherein one bellow is contracted and the opposed bellow 35 is extended.
This is illustrated in FIGS. In order to shift the metallic piston closure plates 44 from right to left and back there is provided a piston rod In the case of using dual bellows pumps 10 a single piston rod 50 will be preferably threaded into the piston closure plate 44 at the end of one bellows 36 and extend across to and be threaded into the opposite piston closure plate Thus, with the FIG.
On the other bellows 36 to the left, the bellows is pushed horizontally outward by the piston rod 50 so that the piston closure plate 44 butts the end closure 16 and the convolutions 38 of the bellows 36 are horizontally spread apart or extended. It has been found that when using the bellows pump 10 with such chemicals as hydrazide a basic substance that is acidic and can attack compounds such as glass and rubber the use of such metals as stainless steel, nickel alloys and cobalt will be impervious to an attack.
This would hold true for any fluid that is corrosive, caustic, acidic or toxic. As such the pump 10 has a lasting quality with little or no maintenance. This is because there are no O rings or other seals needed in the fluid flow area of the pump Even the bearing 26 is of a material that could be attacked is isolated in by the inner end annular closure plate As will be seen the fluid is to be pumped into the annular spaces 54 and 52 so that it only comes in contact with the special metal as described above.
In addition to the special metal the pump 10 metal could be coated with commercially available plastic coatings that are impervious to the corrosive, caustic acidic or toxic fluids. It should also be noted that with a bellows pump 10 as described with the lack of composite material seals the pump can withstand high pressures in the range of F. Having no such seals there can be no temperature or pressure problems. In addition, as the only moving parts of the bellows pump 10 is the bellows 36 there is low stress on the pump and this will result in increased longevity.
The pumping system as illustrated in FIGS. The components of the system may be mounted in the frame Secured to the coupling 64 is a fluid inlet pipe The pipe 66 will extend to a fluid reservoir not shown so that the fluids will be moved through pipes 66 to the pumps or pumps Also the lines 66 may each contain commercially available check values 68, see FIG.
Also each casing 10 includes a fluid outlet coupling Secured to the coupling 70 is a fluid outlet or discharge pipe 72 that will meter the desired quality of fluid at the rate required. A check value 74 may also be provided. In the system 62 where there are two pumps pumping fluid as in FIGS. Also lines 66 may be joined together to the fluid source. The illustrated system 62 is an air operated system, however hydraulics may be used without departing from the spirit of the invention. Line 82 runs to a commercially available momentary impulse five port spool valve Line 84 passes to where it is split into line 84 and 84A.
The line 84A terminates within a pressure limit switch 86 and line 84 terminates within a complementary pressure limit switch The switches 86 and 88 are preferably mounted on mounting frame 20 in opposed horizontal relationship, see FIGS. Each switch 86 and 88 includes an exit line 92 and 94 respectively that runs to ports 96 and 98 in the casing of spool valve The switches 86 and 88 each include a spring loaded plunger switch and The plunger switches and are activated by a trip rod that is secured to the piston rod 50 and will move backwards and forwards as shown by the arrow with the movement of the rod The conventional switches 86 and 88 when open will allow air to pass from line 84 to 94 in the case of switch 88 and when in that position the plunger switch of switch 86 is closed and air line 84A is closed off and air will not pass into line 92 and in turn into the spool valve The spool valve 90 is again a conventional type of valve that will include five ports, two of which are illustrated in FIG.
The other valving will open and close off lines 82, 92 and 94 and the bellows air lines and that pass from couplings and The spool valve 90 operates by air pressure from lines 92 and 94 that will alternatively pass into the chamber through ports 96 and 98 to shift cylinders and , plus the others not shown, all of which are tied together by a tie rod As can be 18 seen with switch 88 open, air moves through line 94 and port 98 into chamber and pushes the cylinder or spool valving so that port is closed and air will not pass through line into connector coupling see FIG.
Thus the bellows 36 is not flexed on the left side as it has reached the stop against end plate 16 and expelled the fluid in the space 52 see FIG. At the point of closure of the left bellows 36, the air line is open allowing air to pass through coupling see FIG. Thus as it moves to the right the piston rod 50 moves contracting the left bellows 16 allowing fluid to enter the fluid space 52 from line 66 until it is filled to the desired quantity where the entire reciprocating process is repeated.
The spool valve 90 may also include adjustable air flow exhaust dampers so that the timing of the shifting or reciprocating bellows 36 may be adjusted to control the time flowing of the fluid to be pumped.
The stroke of the bellows pump 10 will determine the quantity of fluid to be pumped. As an example in one operation where hydrazide is used to be injected into a water supply for purification of water at a nuclear power plant the requirement will usually be 0. With the present invention the reciprocating metal bellows pumps 10 may be adjusted as to the intake stroke timing as well as a quantity of fluid passing into the annular space 5 and end space 52 for appropriate discharge through lines In the present invention preferably two bellows pumps 10 are illustrated with both intaking and discharging fluid.
With the present setup the fluid intake and outlet or discharge lines 66 and 72 of one of the pumps 10 could be eliminated and it could act as a means to assist in the return of the other bellows for engaging in the actual pumping. The air system as described in the nonpumping bellows 10 assures the reciprocation necessary to accomplish the desired intent. The invention and its attendant advantages will be understood from the foregoing description and it will be apparent that various changes may be made in the form, construction and arrangements of the parts without departing from the spirit and scope thereof or sacrificing its material advantages, the arrangements herein before described being merely by way of example.
I do not wish to be restricted to the specific forms shown or uses mentioned, except as defined in the accompanying claims, wherein various portions have been separated for clarity of reading and not for emphasis. A metallic bellows pumps for pumping corrosive, caustic, acidic or toxic fluids which includes a casing with an annular bellows portion within said casing with one end affixed to the casing and the other secured to a piston closure plate with the plate and bellows being moveable toward and away from the fixed end to receive and discharge a fluid with reciprocating movement of the bellows within the casing, and power means to activate and control the movement of the bellows within the bellows pump.
Field of the Invention This invention relates to a metallic bellows pump that among other things is adapted to pump metered fluids. Description of the Prior Art In the pumping of some fluids particularly those that are corrosive, caustic, acidic or toxic previous piston or diaphragm pumps used to meter the fluid have employed O rings and seals of composition material that are attacked by the fluids and will be eaten away causing leaks and in some cases malfunctions.
Each of the bellows 36 at outer end 42 is fitted with a metallic piston closure plate Thus as one bellow 36 shifts so will the other bellows 36, reciprocating back and forth. A reciprocating metallic bellows pump adapted to receive a fluid in a measured quantity and discharge the same from the pump in a preselected period of time, said pump comprising: A reciprocating metallic bellows pump as defined in claim 1 wherein: A reciprocating metallic bellows pump as defined in claim 2 wherein: A reciprocating metallic bellows pump as defined in claim 3 wherein: A reciprocating metallic bellows pump as defined in claim 4 wherein: A reciprocating metallic bellow pump as defined in claim 1 wherein: A reciprocating metallic bellows pump combination as defined in claim 7 wherein: A system for pumping a fluids at high temperature at elevated pressures from an external source in preselected amounts and predetermined time comprising: A system as defined in claim 9 wherein a piston rod extends from the piston closure plate of one of said pumps through the castings to said opposite piston closure plate to assist in opposite contracting and expanding movement of each of said bellows.
A system as defined in claim 10 wherein both of said pumps include means for said internal fluid source to communicate with the interior of each of said casings and both pumps will deliver fluid therein with alternating expanding of said bellows.
A system as defined in claim 12 wherein said system includes pressurized air source and valving means to meter air to said pumps for reciprocation; and a pair of limit switches having air passages connected to said valving means and each to one of said pumps to variably regulate air pressure to each of said bellows to shift each bellows where one is contracted and the other is extended; and.
A system as defined in claim 12 wherein said valving means includes adjustable air flow regulator means to control the timing of the expanding and contracting strokes of said bellow pumps. US USA en DE DEA1 en CA CAA1 en Bellows with alternating layers of high and low compliance material for dynamic applications.
Bellows plungers having one or more helically extending features, pumps including such bellows plungers, and related methods.