Injector pump with roller bearing assembly

Abstract

A positive displacement injector pump for use in the oil and gas industry includes friction reducing roller bearing and head assemblies. The roller bearing assembly is provided to reduce friction in the operation of one or more fluid delivery injector heads and utilizes a motor driving a crosshead and power hub. The power hub has a hub cam follower roller bearing with at least three peripheral perpendicular mounted rolling bearings. A cross head communicates with the hub cam follower roller bearing and is adapted to reciprocate the head assembly to drive the plunger of the injector pump with a guide rod.

Claims

1. An injector pump comprising: a housing having a top side, a bottom side, a first side with a first aperture, a second side with a second aperture, a front side with a third aperture, and a back side with a fourth aperture; a power hub having a first power hub side, a second power hub side, a periphery, a power hub aperture between said first power hub side and said second power hub side, a hub cam follower roller bearing having an axis and a bearing end and a mounting end with said mounting end mounted on said first power hub side wherein said hub cam follower roller bearing is mounted perpendicular to said first power hub side, at least three peripheral rolling bearings each being mounted perpendicular to said power hub aperture between said first power hub side and said second power hub side; a drive shaft in communication with said power hub for rotating said power hub; a cross head adapted to communicate with said hub cam follower roller bearing for pushing said cross head side to side in a reciprocating motion; a guide rod adapted to move side to side in a reciprocating motion and having a first end and a second end wherein said guide rod second end is in communications with said cross head; and a head assembly comprising a suction port, a discharge port, and a plunger wherein said plunger is driven by said guide rod first end for moving fluids from said suction port to said discharge port.

Description

BRIEF DESCRIPTION OF THE PICTORIAL ILLUSTRATIONS, GRAPHS, DRAWINGS, AND APPENDICES

(1) The invention will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed pictorial illustrations, graphs, drawings, and appendices wherein:

(2) FIG. 1 is a general front view illustration of a preferred embodiment in accordance with the present invention.

(3) FIG. 2 is a general top view illustration of a preferred embodiment in accordance with the present invention.

(4) FIG. 3 is a general front view illustration of a preferred embodiment in accordance with the present invention generally depicting a power hub with roller bearings.

(5) FIG. 4 is a general front view illustration of a preferred embodiment in accordance with the present invention generally depicting a cross head.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(6) Referring to the illustrations, drawings, and pictures, and to FIG. 1 in particular, reference character 10 generally designates a new and improved dual head positive displacement pump system and method of using the same constructed in accordance with the present invention. FIG. 1 generally depicts invention 10 power source 20, fluid source or sources 30, and a removable top cover 40, which will all be discussed in greater detail below.

(7) It is understood that invention 10 may be powered by power source 20 such as but not limited to a computer controlled solar power source and or other hard wired electrical source for powering an electric motor 50 known in the art such as but not limited to a 12 volt electric motor. It is also contemplated that other known types of power sources, powers of motors, and so forth may be utilized. It is also understood that a coupling 60 may be utilized to generally attach motor 50 as is also known in the art. Furthermore, fluid source 30 may be of numerous configurations, types of fluid, and so forth known in the art. Fluid 30 may be utilized for oil and gas applications as well as other applications where it is desired to pump fluids. It is also understood that more than one type of fluid may be pumped for different applications at the same time.

(8) Again referring to the illustrations and more in particular to FIG. 2, the present invention 10 may include a gear box and or housing 70 with removable top cover 40 and a drive shaft 80 through said housing 70. Housing 70 may have a view port 90 that may include a removable see-through cover 100 such as but not limited to clear plastic, glass, combinations thereof and so forth. It is also understood that cover 100 may be integrated into housing 70 and generally not be removable. It is also contemplated that housing 70 may have a top side, a bottom side, a first side with an aperture, a second side with an aperture, a front side with an aperture, and a back side with an aperture as generally depicted and described in greater detail below.

(9) Shaft 80 generally enters housing 70 for positioning roller bearing assembly 110. Housing 70 may generally positionally and rotationally hold roller bearing assembly 110, which will be discussed, in greater detail below.

(10) Housing 70 may further include a first head assembly 120 and a possible second head assembly (not shown) at opening 130. It is understood that first head assembly 120 and a second head assembly may be of a construction known in the art.

(11) First head assembly 120 may include a first suction port 140, a first discharge port 150, and a first plunger assembly and or plunger 160 driven by drive shaft 80. Invention 10 contemplates a second head assembly (not depicted), located at opening 130 may include a second suction port, a second discharge port, and a second plunger assembly driven by the same drive shaft 80. It is understood that other head assemblies may be utilized and that the current invention should not be considered limited to one and or two. It is also understood that first plunger assembly 160 and second plunger assembly (not shown) may be of a configuration known in the art and be adjustable as desired, and may include an eccentric cam, stroke adjuster, and so forth.

(12) First suction port 140 and second suction port (not shown) may be coupled to fluid source 30 by conduit 200 and conduit respectively. It is understood that fluid source 30 may be the same for both, different, and combinations thereof. First discharge port 150 and a second discharge port (not shown) may be coupled by conduit 220 and other conduits respectively to deliver and or inject fluid from fluid source 30 as desired.

(13) Invention 10 contemplates not using a second head assembly and generally capping opening 130 with cap 170. It is understood that first guide rod 180 having a first end and second end would still be utilized for generally positioning cross head 240 as further explained below. Cap 170 may generally have an interior 190 for allowing first guide rod 180 the ability to reciprocate through housing 70 aperture 210 and may include spring 230.

(14) Roller bearing assembly 110 may generally include cross head 240 which may comprise top half 250 and bottom half 260 and held together by a first guide pin 270 and a second guide pin 280. Invention 10 roller bearing assembly 110 further contemplates cross head 240 generally has an aperture and or opening 290 for communicating with power hub 300 hub cam follower 310 wherein hub cam follower 310 may be but is not limited to a roller bearing with an axis. Power hub 300 may further include peripheral bearings 320 such as but not limited to roller bearings with respective axis. It is contemplated that drive shaft 80 essentially turns power hub 300 wherein hub cam follower 310 rotates inside aperture 290 of cross head 240 thereby moving cross head 240 generally in a side to side motion thereby actuating first head assembly 120 by pushing first guide rod 180 through aperture 210 and second guide rod 330 having a first end and second end through aperture 380, respectively and left and right in a reciprocating motion.

(15) Peripheral bearings 320 essentially contact first side 340 of cross head 240 thereby supporting cross head 240 with reduced friction between the two moving pieces. It is understood that more or less peripheral bearings 320 are contemplated such as but not limited to four and are generally positioned on the periphery of Power hub 300. Power hub 300 is adapted to communicate with drive shaft 80 and may have aperture 350 for securing to drive shaft 80 and a first side 360 for locating hub cam follower 310 and a second side 370 for engaging drive shaft 80.

(16) It is therefore contemplated that invention 10 may be an injector pump comprising: a housing having a top side, a bottom side, a first side with an aperture, a second side with an aperture, a front side with an aperture, and a back side with an aperture; a power hub having a first side, a second side, a periphery, an aperture between said first side and said second side, hub cam follower roller bearing having an axis mounted on said first side wherein said roller bearing axis is mounted perpendicular to said first side, at least three peripheral rolling bearings each having an axis mounted perpendicular to said aperture between first side and said second side; a drive shaft in communication with said power hub for rotating said power hub; a cross head adapted to communicate with hub cam follower roller bearing for pushing said cross head side to side in a reciprocating motion; a guide pin adapted to move side to side in a reciprocating motion and having a first end and a second end wherein said guide pin second end is in communications with said cross head; and a head assembly comprising a suction port, a discharge port, and a plunger wherein said plunger is driven by said guide pin second end for moving fluids from said suction port to said discharge port.

(17) Changes may be made in the combinations, operations, and arrangements of the various parts and elements described herein without departing from the spirit and scope of the invention.