US1739096A

US1739096A - Mud pump

Info

Publication number: US1739096A
Application number: US133485A
Authority: US
Inventors: William V Seifert
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-09-03
Filing date: 1926-09-03
Publication date: 1929-12-10
Anticipated expiration: 1946-12-10

Description

Dec. 10, 1929.

w. v. SEIFERT MUD PUMP Filed Sept. 3, 1926 2 Sheets-Sheet l 1 N VEN TOR.

Dec. 10, 1929. -w. v. SEIFERT MUD PUMP 2 Sheets-Shet Filed Sept. 3, 1926 lllll 1 III? H IYNVENTOR.

A TTORNEY.

Patented Dec. 10, 1929 1,739,096

om-Tao. STATES PATENT! OFFICE.

wILLIAH V. SEIFERT, 01 DENVER, COLOR ADO I MUD PUMP Application filed September a, 1926. Serial No. 138,485.

This invention relates to pumps and its delivery. Each unit comprises a horizontal prima object is to provide a lifting pump cylinder 5 connected at its ends with two verparticu arly adapted for drawing muddy tical displacement chambers 6 formed ad liquids from wells and other sources. It is a joiningly in the housing of the pump, with 6 distinctive feature of the invention that the their lower ends in communication with the 56 turbid liquid passes through the pump with-v ingress-opening 7 and the egress-opening 8 out coming in contact with any part of the of the same. I operating mechanism. Each displacement chamber has two ports Another feature of the invention resides in 9 and 10 separated by a series'of check valves 10 the provision-of check valves which by the 12, the construction of which will hereinafter 60 absence of sliding parts are not affected by he described. The lower port 10 of each disthe abrasive action of grit and sand carried placement chamber is connected with the inby the liquid drawn through the valves, and gress-opening by a passage 13 and when, as in still another aim of the invention is to prothe construction shown in the drawings, the

vide in a pump of the above described characpump comprises two units, the four displace- 65 ter floating pistons which separate the liquid ment chambers open into the one passage as from the operating mechanism of the pump shown in Figure 6. The ports 9 of the disand are instrumental in drawing the liquid placement chambers above the valves. 12, are from its source and impelling it to the point connected by ducts 14 with a passage 15in the of discharge. 1 upper portion of the pump housing, which 7 Other objects of the invention reside in de communicates with the egress-opening by a tails of construction and novel arrangements downwardly extending duct 16 as best shown and combinations of parts as will be fully disin Figure 5. closed in the course of the following descrip- .The connection between the ducts and the tion passage is controlled by check-valves 17 sim- In the accompanying drawings, in the sevilar in construction to those which control the eral views of which like parts are similarly connection between the lower ends of the dis designated by numerical reference characters, placement chambers and the ingress opening. I

Figure 1; represents a partially sectional The four displacement chambers of the du- 30 plan view of the pump, plexconstruction illustrated in the drawings,

Figure 2, a vertical section taken on the have their respective ports 6 in connection line 2-2 in Figure 1, with one and the same passage 15 which as v Figure 3, an enlarged sectional view of one stated before communicates with the single ofthe floating pistons of the pump mechaegress-opening 8. I 35 nism, in its displacement chamber, Pistons 18 fitted forreciprocation in the Figure 4, an end-elevation of the pump, cylinders 5 of the two pump-units, are faslooking in the direction of the arrow A in tened to rods 19 which extend through stufling Figure 1, boxes 20, for their connection with sliding Figure 5, a vertical transverse section in the cross heads 21, The cross'heads are cylindri- 40 planes indicated by the line 3-3 in Figure 2, cal and move in correspondingly formed slide Figure 6, a horizontal section along the ways 22 which at their ends connect with the line 6-6 Figure 4, and heads of the respective cylinders 5 and with Figure 7, an enlarged and fragmentary seca crank-case 23. N tional view of one of the check-valves which A shaft 24 mounted in bearings 25' in the 45 control the passage of displaced liquid to and crank case 23 has two crank disks 26 the wrists from the pump. of which are connected with the cross-heads The pump illustrated in the drawings comof the two pump units by means of rods 27. prises two units which operate in unison to The shaft carries between its bearings, aworm draw the liquid from its source in alternate wheel 28 which meshes with a worm 29 like- 50 movements and impel it to a common point of wise enclosed in the crank-case. The worm is mounted at theend of a shaft 30. extending through a packed opening of the crank case and connected by a coupling 31 with the rotor of an electric motor 32 which for convenience may be supported on the base 33' of the pump housing. a

Y The displacement chambers are lined with bushings 34 for the reciprocating movement of floating istons 35. These istons are preferably made, as illustrated in Figure 3, of two hollow cylindrical'boxes 36 provided with central tubular openings for their connection by coupling bolts 37. Clamped between the boxes is a disk 38 of felt or other suitable material and at opposite sides of this disk are leather cups 39 which extend around the boxes for engagement with the bushings of the displacement chambers. The felt disk and the leather cups cooperate to maintain the pistons in fluid-tight contact with the walls of the displacement chambers, while permitting of the upward and downward movement of the pistons in the operation of the pump.

The check-

valves

12 and 17 .hereinbefore referred to may be of any suitable construction but I prefer for the purpose of the present invention, the form and arrangement illustrated in the drawings. f

Each valve-element in each of the displacement chambers or in each of the dischargeducts. is composed of a number of concentric members separated from each other by circular partitions 40. The lower portions of the partitions are beveled to provide the valve-seats 47.

The valve-members are each composed of an annular sack 41 of leather or other suitable material containing a body of mercury 42 and fastened by means of bolts 43 upon a metal retaining, ring 44. A rubber band 45 in a recess at the upper edge of the ring aids in maintaining a fluid-tight contact with the valve seat when the valve is in its closed position, and metal washers 46 which if so desired may be replaced by a continuous strap, are placed inside the bag for engage ment with the heads of the bolts.

The upper' portion of the bags is of ample fulness to permit of its contraction by suction in the displacement chambers. When this contractiontakes place the sides of the bags are drawn away from the beveled valveseats 47 and the lower portion is lifted sufliciently to permit of the passage of the liquid.

After the suction is discontinued and the valves are subjected to pressure, the leather bags are under the influence of the weight of their mercury contents, pressed back against the valve-seats with little or no sliding movement and the weight of the mercury together with the fluid pressure above the valves, maintains a fluid-tight contact of the valves with their respective seats. It will benoted that by eliminating sliding movement of the valves, their wear by grit or sand in the displaced liquid is reduced to the minimum, it 7 being understood that the slight up and downward movement of the lower portion of the valve is negligible and that whatever wear may be caused by such movement on the metal retaining ring, does not affect the w atertight condition of the valve, which is entirely dependent on the contact of the sides 2; the bag with the converging annular seats In the operation of the pump, the cylinderof each unit and the spaces of the respective displacement chambers above the floatpistons are filled with a fluid body preferably oil or other similar substance and the crank case and the cylindrical slide ways connected therewith are likewise supplied with oil for the purpose of lubrication.

tial vacuum which causesthe float-piston in the other displacement chamber to be drawn upwardly. The upward movement of the last mentioned float piston-opens the checkvalves at the lower end of the respective displacement chamber with the result that the liquid in the source connected with the ingress opening is drawn through said opening into the passage 13 and thence through the port 10 into the displacement chamber where it follows the movement of the piston 35.

In the other displacement chambers which hag previously been filled with the liquid dr wn" through the ingress opening while the piston in the pump cylinder moved in the opposite direction, the liquid is forced downwardly past the closed valves 12 and through the ports 6 whence it passes into the respective ducts 14 and through the respective valve 17 into the passage 15 from where it is delivered to the egress-opening.

It will thus be apparent that in the operation of the pump one displacement chamber muddy waters from wells and other sources of supply.

The provision of contracting valves which engage their seat with little or no sliding motion as hereinbefore explained adds to the life of the pump and permits of its operation during an extensive period of time without repair or replacement of parts.

It is to be understood that the pump as shown and described is subject to variations in details of construction and in the arrangement of its parts Without departing from the spirit or scope of the invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. In a pump having an ingress port and an egress port, a cylinder, a piston in the cylinder, a displacement cylinder connected with the first-mentioned cylinder, the displacement cylinder being in connection with the ingress and egress ports of the pump, a floating piston in the displacement cylinder, a fluid body between the first-mentioned piston and the floating piston, and a check valve in the displacement cylinder, controlling the flow of liquid through the ingress port.

2. In a pump having an ingress port and an egress port, a cylinder, a piston in the cylinder, a displacement cylinder connected with the first-mentioned cylinder, the displacement cylinder being in connection with the ingress and egress ports of the pum and having a normally closed opening at t e bottom thereof, a floating piston in the displacement cylinder, a fluid body between the firstmentioned piston and the floating piston, and a check-valve in the displacement cylinder controlling the flow of liquid through the ingress port.

3. In a pump having an ingress port and an egress port, a cylinder, a iston in the cylinder, a displacement cylin er connected with the first-mentioned cylinder, the dis lacement cylinder being in connection with t e ingress and egress ports of the pum and having a normally closed opening at t e bottom thereof, a floating piston in the displacement cylinder, a fluid body between the first-mentioned piston and the floating piston, and a check-valve unit in the displacement cylinder controlling the flow of liquid through the ingress port, the floating piston and checkvalve unit being remova le through said opening.

4. In a pump having an ingress port and an egress port, a cylinder, a piston in the cylinder, a displacement cylinder connected with the first-mentioned cylinder, the displacement cylinder being in connection with the ingress and egress ports of the pump, a reciprocating means in the displacement cylinder adapted to follow the movements of the piston, a fluid between the piston and the reciprocating means, and a valve controlling the ingress port and comprising a housing having a valve seat tapering to a reduced opening and a check valve on the seat controlling the flow through the reduced openmg.

5. In a pump having an ingress port and an egress port, a cylinder, a piston in the cylinder, a displacement cylinder connected with the first-mentioned cylinder, the displacement cylinder being in connection with the ingress and egress ports of the pump, a reciprocating means in the displacement cylinder adapted to follow the movements of the piston, a fluid body between the piston and the reciprocating means, the displacement cylinder having a normally closed opening, a valve controlling the ingress port and comprising a housing having a valve seat tapering to a reduced opening and a check valve on the seat controlling the flow through the reduced opening, the valve housing and valve being removable through said opening.

In testimony whereof I have afiixed my signature.

WILLIAM V. SEIFERT.