CN113982876B

CN113982876B - Reciprocating pump power device

Info

Publication number: CN113982876B
Application number: CN202111278371.2A
Authority: CN
Inventors: 戴志昂; 魏海彪; 忻达; 马剑峰
Original assignee: Ningbo Qianhu Petroleum Equipment Co ltd
Current assignee: Ningbo Qianhu Petroleum Equipment Co ltd
Priority date: 2021-10-30
Filing date: 2021-10-30
Publication date: 2023-04-07
Anticipated expiration: 2041-10-30
Also published as: CN113982876A

Abstract

The utility model belongs to the technical field of liquid transportation and specifically relates to a reciprocating pump power device has solved the connecting rod bent axle at the in-process that a plurality of piston rods of drive removed, because the continuous change of angle leads to wearing and tearing great between connecting rod bent axle and piston rod, influences reciprocating pump power device's life's problem, and it includes the total axle, total axle one end coaxial coupling has the rotation driving piece, the total axle includes a plurality of locating wheels that distribute along the axis, every adjacent two equal eccentric settings has the bent axle, every between the locating wheel all the cover is equipped with the coupling rod on the bent axle, the coupling rod is connected with the piston rod that is used for pumping liquid, and is a plurality of locating wheel and a plurality of offer a groove that is used for the oiling in the bent axle jointly, each on the bent axle by the bent axle outer wall extremely the oil filler point has all been seted up. The application has the effects of reducing abrasion in the moving process of the driving piston rod and prolonging the service life of the reciprocating pump.

Description

Reciprocating pump power device

Technical Field

The application relates to the field of liquid conveying, in particular to a reciprocating pump power device.

Background

At present, different types of reciprocating pumps are frequently adopted for liquid conveying, a cavity and a piston or a deformable diaphragm on the wall of the cavity are arranged in the reciprocating pump, the volume of the cavity in the reciprocating pump is changed through the piston or the diaphragm, and one-way valves are arranged at an inlet and an outlet of the cavity in the reciprocating pump, so that liquid enters the reciprocating pump from the inlet when the volume of the cavity is increased and is output from the outlet when the volume of the cavity is reduced, and the reciprocating pump is suitable for conveying high-pressure head and high-viscosity liquid.

The piston rod is generally provided with a moving channel outside, the moving direction of the piston rod is limited in the length direction of the piston rod, for a multi-cylinder pump provided with a plurality of cavities, the plurality of piston rods are usually connected to a connecting rod crankshaft, and the connecting rod crankshaft drives the plurality of piston rods to move simultaneously, so that the volumes of the plurality of cavities are continuously changed, and the effect of simultaneously conveying multiple cylinders is achieved.

In view of the above-mentioned related technologies, the inventor believes that there is a defect that the wear between the connecting rod crankshaft and the piston rod is large due to the continuous change of the angle in the process of driving the plurality of piston rods to move by the connecting rod crankshaft, and the service life of the reciprocating pump power device is affected.

Disclosure of Invention

In order to reduce the abrasion of the driving piston rod in the moving process and prolong the service life of the reciprocating pump, the application provides a power device of the reciprocating pump.

The application provides a reciprocating pump power device adopts following technical scheme:

the utility model provides a reciprocating pump power device, includes the main shaft, main shaft one end coaxial coupling has the rotation driving piece, the main shaft includes a plurality of locating wheels that distribute along the axis, every adjacent two equal eccentric settings has the bent axle between the locating wheel, every all overlap on the bent axle and be equipped with the coupling rod, the coupling rod is connected with the piston rod that is used for pumping liquid, and is a plurality of locating wheel and a plurality of offer an oiling groove that is used for the oiling jointly in the bent axle, each bent epaxial by bent axle outer wall extremely the oil filler point has all been seted up in the oiling groove.

By adopting the technical scheme, the rotating driving piece connected on the main shaft is convenient to drive the main shaft to rotate, a plurality of eccentric crankshafts arranged in the main shaft drive the end part of the connecting rod to rotate around the axis of the main shaft, and further the piston rod connected with the connecting rod is driven to slide in a reciprocating manner along the length direction in the corresponding limiting mechanism, liquid at the inlet of the reciprocating pump is sucked into the reciprocating pump, and then the liquid in the reciprocating pump is discharged from the outlet of the reciprocating pump, so that the pumping and conveying of the liquid are facilitated.

Optionally, the crankshaft is engaged between two adjacent positioning wheels.

By adopting the technical scheme, the assembly and disassembly of a plurality of crankshafts on the main shaft are facilitated, and the assembly, disassembly and replacement of a plurality of connecting rods are facilitated.

Optionally, the side walls of the two ends of the crankshaft are connected with limit keys, and the limit keys are matched with the corresponding positioning wheels in an embedded mode.

Through adopting above-mentioned technical scheme, improved the stability of being connected between bent axle and corresponding locating wheel, prevented that the bent axle tip from sliding in the locating wheel, make sliding friction take place between bent axle tip and locating wheel, and then lead to taking place wearing and tearing between bent axle tip and the locating wheel, be unfavorable for the long-term use of bent axle.

Optionally, a positioning seat is surrounded on the outer side of each positioning wheel.

Through adopting above-mentioned technical scheme, made things convenient for every locating wheel at the positioning seat internal rotation, improved the stability of a plurality of locating wheels when rotating under the effect of rotation driving piece, prevent that a plurality of locating wheels of the in-process of a plurality of hookup linkage motion of total axis drive and a plurality of bent axle skew slippage.

Optionally, embedded grooves are formed in the two ends of the outer wall of the positioning wheel along the circumferential direction, two bearings are arranged in the embedded grooves, the inner wall of each bearing is tightly attached to the side wall of each embedded groove, and the outer wall of each bearing is tightly attached to the inner wall of each positioning seat.

By adopting the technical scheme, the bearing is conveniently placed in the embedded groove, so that the positioning wheel can rotate in the positioning seat more smoothly, the abrasion between the outer wall of the positioning wheel and the inner wall of the positioning seat is reduced, and the power consumed by the rotation of the rotating driving piece for driving the plurality of positioning wheels to rotate in the corresponding positioning seat is reduced.

Optionally, the outer diameter of the bearing is larger than the outer diameter of the positioning wheel.

Through adopting above-mentioned technical scheme, prevent to produce the friction between positioning wheel and positioning seat, further reduced the power that consumes when rotating a plurality of positioning wheels of driving piece drive and rotating.

Optionally, the positioning seat is divided into a first half ring below and a second half ring above, the first half ring is hinged to the second half ring, and both side surfaces of the positioning seat are connected with limiting rings for limiting the bearing.

Through adopting above-mentioned technical scheme, made things convenient for the installation of locating wheel in the positioning seat, and the spacing ring has restricted the removal of locating wheel and two bearings in the main shaft axis direction, has improved a plurality of locating wheels and a plurality of bent axle in the ascending stability of main shaft axis direction, has further reduced the probability that a plurality of locating wheels and a plurality of bent axles take place the skew slippage.

Optionally, an intermediate rod is connected between the coupling rod and the piston rod.

By adopting the technical scheme, the connecting rod and the piston rod are conveniently connected through the intermediate rod, the intermediate rod and the piston rod are conveniently replaced after abrasion occurs between the intermediate rod and the connecting rod, and the service lives of the connecting rod and the piston rod are prolonged.

Optionally, two ends of the intermediate rod are respectively connected with the connecting rod and the piston rod in an embedded manner, and buffer areas are arranged at the embedded positions of the intermediate rod, the connecting rod and the piston rod.

By adopting the technical scheme, the impact force and the friction force between the middle rod and the connecting rod as well as between the middle rod and the piston rod are reduced through the buffer area when the connecting rod drives the middle rod and the piston rod to move, further the abrasion between the middle rod and the connecting rod as well as between the piston rod is reduced, the service lives of the middle rod, the connecting rod and the piston rod are prolonged, in the process that the connecting rod pushes the middle rod and the middle rod to push the piston rod to do reciprocating motion, the buffer area plays a role in delaying the motion, the acceleration of the reciprocating motion of the piston rod is reduced, and the pulsation of the flow in the reciprocating pump is relieved.

Optionally, a plurality of buffer areas are provided with buffer pads.

Through adopting above-mentioned technical scheme, further reduced the impact force and the frictional force of the junction of intermediate lever and coupling lever and piston rod, further prolonged the life of intermediate lever, coupling lever and piston rod.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the rotary driving part connected to the main shaft is convenient to drive the main shaft to rotate, so that a plurality of eccentric crankshafts arranged in the main shaft drive the end part of the connecting rod to rotate around the axis of the main shaft, and further the piston rods connected with the connecting rod slide in a reciprocating manner in the corresponding limiting mechanisms along the length direction, liquid at the inlet of the reciprocating pump is sucked into the reciprocating pump, and then the liquid in the reciprocating pump is sent out from the outlet of the reciprocating pump, so that the liquid is convenient to pump and send;

2. the positioning seats are arranged outside the positioning wheels, the bearings are embedded in the two ends of the outer wall of each positioning wheel, and the limiting rings are connected to the two ends of the inner wall of each positioning seat, so that the positioning wheels, the bearings and the positioning seats are convenient to limit mutually, the positioning wheels and the bearings are prevented from sliding in the axial direction of the main shaft, and the stability of the positioning wheels and the crankshaft when rotating around the axial line of the main shaft is improved;

3. the middle rod is connected between the piston rod and the connecting rod, the buffer area is reserved at the joint of the middle rod and the connecting rod as well as the joint of the piston rod, and the buffer gasket is arranged in the buffer area, so that the impact force and the friction force at the joint of the middle rod and the connecting rod as well as the piston rod when the connecting rod drives the middle rod and the piston rod to move are reduced, the service lives of the connecting rod, the middle rod and the piston rod are prolonged, and the pulsation of the flow in the reciprocating pump is slowed down.

Drawings

Fig. 1 is a schematic structural view of a reciprocating pump power device according to an embodiment of the present application.

Fig. 2 is a schematic structural view of a coupling rod and an intermediate rod and a piston rod of a reciprocating pump power device according to an embodiment of the present application.

Fig. 3 is a schematic structural view of a general shaft of a reciprocating pump power unit according to an embodiment of the present application.

Description of the reference numerals: 1. a main shaft; 11. rotating the driving member; 12. an oil filling tank; 2. positioning wheels; 21. a groove is embedded; 22. a bearing; 3. a crankshaft; 31. an oil filler hole; 32. a limiting key; 4. positioning seats; 41. a first half ring; 42. a second half ring; 43. a limiting ring; 5. a coupling rod; 6. a piston rod; 7. an intermediate lever; 71. a buffer area; 72. and a buffer gasket.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a reciprocating pump power device. Referring to fig. 1 and 2, a reciprocating pump power device, including the main shaft 1, main shaft 1 one end is connected with rotation driving piece 11, rotation driving piece 11 includes the motor and two synchronizing wheels of coaxial coupling in main shaft 1 tip and motor output shaft respectively in this application embodiment, be used for driving main shaft 1 to rotate around the axis, main shaft 1 includes a plurality of locating wheels 2 along the axis equipartition, and every two locating wheels 2 between one bent axle 3 of gomphosis connection, all overlap on every bent axle 3 and be equipped with a connecting rod 5, every connecting rod 5 all connects gradually intermediate lever 7 and piston rod 6, intermediate lever 7 separates connecting rod 5 and piston rod 6, it falls to make things convenient for intermediate lever 7 to change intermediate lever 7 after intermediate lever 7 and connecting rod 5 or piston rod 6 wear, the life of connecting rod 5 and piston rod 6 has been prolonged.

Referring to fig. 1 and 2, a plurality of crankshafts 3 are all eccentric to the axis of a main shaft 1, when a rotary driving piece 11 is convenient to drive the main shaft 1 to rotate, the end part of a connecting rod 5 is driven by the crankshafts 3 to rotate around the axis of the main shaft 1, an intermediate rod 7 and a piston rod 6 connected to the connecting rod 5 move under the linkage action of the connecting rod 5, and each piston rod 6 is externally provided with a moving channel, so that the connecting rod 5 drives the piston rod 6 to slide along the length direction of the moving channel, the liquid at the inlet of a reciprocating pump is conveniently pumped into the reciprocating pump when the piston rod 6 is close to the main shaft 1, and the liquid in the reciprocating pump is pumped out from the outlet of the reciprocating pump when the piston rod 6 is far away from the main shaft 1.

Referring to fig. 1 and 2, two ends of the intermediate rod 7 are connected with the connecting rod 5 and the piston rod 6 in an embedded manner, buffer areas 71 are arranged at the joints of the intermediate rod 7, the connecting rod 5 and the piston rod 6, and buffer gaskets 72 are filled in the buffer areas 71, so that when the connecting rod 5 drives the intermediate rod 7 and the piston rod 6 to move, the intermediate rod 7 delays to move in the connecting rod 5, and the piston rod 6 delays to move in the intermediate rod 7, so that the acceleration of the piston rod 6 during reciprocating motion is reduced, the pulsation of the piston rod 6 during pumping liquid is relieved, the stability of the delivery flow of the reciprocating pump is improved, the impact force and the friction force at the joints of the intermediate rod 7, the connecting rod 5 and the piston rod 6 are reduced, and the service lives of the intermediate rod 7, the connecting rod 5 and the piston rod 6 are prolonged.

Referring to fig. 1 and 3, embedded groove 21 has all been seted up along circumference at 2 outer wall both ends of every positioning wheel, all be equipped with bearing 22 in every embedded groove 21, every positioning wheel 2 all encloses to be equipped with positioning seat 4 outward, bearing 22 inner wall and embedded groove 21 lateral wall interference fit, bearing 22 outer wall and 4 inner wall interference fit of positioning seat, made things convenient for a plurality of positioning wheels 2 to rotate steadily in corresponding positioning seat 4 under the effect of rotation driving piece 11, prevent to take place sliding friction between 2 outer walls of positioning wheels and 4 inner walls of positioning seat, the wearing and tearing between positioning wheel 2 and positioning seat 4 have been reduced. Both ends of the outer wall of the crankshaft 3 are connected with limit keys 32, and the limit keys 32 are matched with the corresponding locating wheels 2 in an embedded mode, so that sliding friction between the outer wall of the crankshaft 3 and the locating wheels 2 is prevented, and abrasion between the crankshaft 3 and the locating wheels 2 is reduced.

Referring to fig. 1 and 3, both side surfaces of the positioning seat 4 are connected with limiting rings 43, the two limiting rings 43 limit the positioning wheel 2 and the bearing 22 in the positioning seat 4, the bearing 22 and the positioning wheel 2 are prevented from sliding in the axial direction of the main shaft 1, and the stability of the positioning wheel 2, the bearing 22 and the crankshaft 3 in rotation around the axial line of the main shaft 1 is improved. The positioning seat 4 comprises a lower first half ring 41 and an upper second half ring 42, one end of the first half ring 41 is hinged with one end of the second half ring 42, and the other end of the first half ring 41 is connected with the other end of the second half ring 42 through a bolt, so that the installation of a plurality of positioning wheels 2 and bearings 22 in the corresponding positioning seats 4 and the installation of the crankshaft 3 in two adjacent positioning wheels 2 are facilitated.

Referring to fig. 1 and 3, a grease filler groove 12 has been seted up jointly in a plurality of bent axles 3 and a plurality of locating wheel 2, and grease filler hole 31 has all been seted up between grease filler groove 12 and every bent axle 3 outer wall, has made things convenient for through grease filler groove 12 and grease filler hole 31 with lubricating oil injection between every bent axle 3 and corresponding coupling rod 5 tip, has reduced the friction between bent axle 3 and coupling rod 5.

The implementation principle of the reciprocating pump power device in the embodiment of the application is as follows: two bearings 22 are respectively installed at two ends of the positioning wheel 2, the positioning wheels 2 and the crankshafts 3 which are sleeved with the connecting rods 5 are sequentially installed in the positioning seats 4, and then the pairs of first half rings 41 and second half rings 42 are connected through bolts, so that the installation of the main shaft 1 is completed.

The piston rods 6 are inserted into the moving channel, the buffer gaskets 72 are arranged in the buffer area 71, the middle rods 7 are connected between the corresponding pair of connecting rods 5 and the piston rods 6, the piston rods 6 are installed, the rotary driving piece 11 is started, the main shaft 1 is driven to rotate around the axis of the main shaft 1 by the rotary driving piece 11, the crankshaft 3 and the end parts of the corresponding connecting rods 5 are driven to rotate around the axis of the main shaft 1, the connecting rods 5 drive the middle rods 7 and the piston rods 6 to slide in the moving channel in a reciprocating mode, and pumping of liquid in the reciprocating pump can be achieved.

The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A reciprocating pump power device is characterized in that: the oil injection device comprises a main shaft (1), one end of the main shaft (1) is coaxially connected with a rotary driving part (11), the main shaft (1) comprises a plurality of positioning wheels (2) distributed along the axis, a crankshaft (3) is eccentrically arranged between every two adjacent positioning wheels (2), each crankshaft (3) is sleeved with a connecting rod (5), each connecting rod (5) is connected with a piston rod (6) used for pumping liquid, an oil injection groove (12) used for injecting oil is jointly formed in the plurality of positioning wheels (2) and the plurality of crankshafts (3), and an oil injection hole (31) is formed in each crankshaft (3) from the outer wall of the crankshaft (3) to the oil injection groove (12); an intermediate rod (7) is connected between the connecting rod (5) and the piston rod (6); two ends of the middle rod (7) are respectively connected with the connecting rod (5) and the piston rod (6) in an embedded mode, and buffer areas (71) are arranged at the embedded positions of the middle rod (7) and the connecting rod (5) and the piston rod (6); buffer gaskets (72) are arranged in the buffer areas (71).

2. The reciprocating pump power plant of claim 1, wherein: the crankshaft (3) is clamped between the two adjacent positioning wheels (2).

3. A reciprocating pump power plant as defined in claim 2, wherein: it is a plurality of bent axle (3) both ends lateral wall all is connected with spacing key (32), and is a plurality of spacing key (32) all with corresponding locating wheel (2) gomphosis cooperation.

4. The reciprocating pump power plant of claim 1, wherein: each positioning wheel (2) is surrounded by a positioning seat (4).

5. The reciprocating pump power plant of claim 4, wherein: embedded groove (21), two have all been seted up along circumference at positioning wheel (2) outer wall both ends all be equipped with bearing (22) in embedded groove (21), bearing (22) inner wall with embedded groove (21) lateral wall is hugged closely, bearing (22) outer wall with positioning seat (4) inner wall is hugged closely.

6. The reciprocating pump power plant of claim 5, wherein: the outer diameter of the bearing (22) is larger than the outer diameter of the positioning wheel (2).

7. The reciprocating pump power plant of claim 5, wherein: the positioning seat (4) is divided into a first half ring (41) on the lower portion and a second half ring (42) on the upper portion, the first half ring (41) and the second half ring (42) are hinged to each other, and two side faces of the positioning seat (4) are connected with limiting rings (43) used for limiting the bearing (22).