Bellows pump for delivery of liquids in checked
In the present pump the need for lubricants on parts in the fluid flow stream is unnecessary. Piston and piston rod construction for pumps and method of flushing piston-type pumps. The bellows 36 each include a number of annular convolutions 38 one jointed to the next by an inwardly recessed web portion Another object of the present invention is to provide a metallic bellows pump that may be bellows pump for delivery of liquids in checked single bellows or dual bellows to accomplish the proper pumping of a fluid. 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.
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. Mounted within each plug 24 is an annular bearing 26 with a horizontal bore 28 passing therethrough. This is illustrated in FIGS.
Bellows pump for delivery of liquids in checked 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. 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. In the system 62 where there are two pumps pumping fluid as in FIGS.
These and other objects and advantages will become apparent from the following part of the specification wherein details have been described for the bellows pump for delivery of liquids in checked of disclosure, without intending to limit the scope of the invention which is setforth in the appended claims. 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. Line 82 runs to a commercially available momentary impulse five port spool valve 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. This is because there are no O rings or other seals needed in the fluid flow area of the pump
The stroke of the bellows pump 10 will determine the quantity of fluid to be pumped. At the point of closure of the left bellows 36, the air line is open allowing air to pass through coupling see FIG. In addition to the special metal bellows pump for delivery of liquids in checked pump 10 metal could be coated with commercially available plastic coatings that are impervious to the corrosive, caustic acidic or toxic fluids. The switches 86 and 88 are preferably mounted on mounting frame 20 in opposed horizontal relationship, see FIGS. Field of the Invention This invention relates to a metallic bellows pump that among other things is adapted to pump metered fluids.
The bellows 36 each include a number of annular convolutions 38 one jointed to the next by an inwardly recessed web portion In addition, bellows pump for delivery of liquids in checked 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 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 This mounting supports the pumps 10 as they are suspended inwardly from the frame This is illustrated in FIGS.
In the present pump the need for lubricants on parts in the fluid flow stream is unnecessary. Field of the Invention This invention relates to a metallic bellows pump that among other things is adapted to pump metered fluids. 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. It is an object of the present invention to provide a metallic bellows pump without bellows pump for delivery of liquids in checked seals that are subject to attack by corrosive, caustic, acidic or toxic fluids during pumping of the fluid.
The spool valve 90 is again a conventional type of valve that will include five ports, two of which are illustrated in FIG. This invention relates to a metallic bellows pump that among other things is adapted to pump metered fluids. 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. It should also be noted that with a bellows pump 10 as described with the lack of bellows pump for delivery of liquids in checked material seals the pump can withstand high pressures in the range of F.
The illustrated system 62 is an air operated system, however hydraulics may be used without departing from the spirit of the invention. 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. In the system 62 where there are two bellows pump for delivery of liquids in checked pumping fluid as in 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