CN211258908U

CN211258908U - Three-plunger reciprocating pump

Info

Publication number: CN211258908U
Application number: CN201922117514.6U
Authority: CN
Inventors: 毛培光; 毛凯; 毛晓敏
Original assignee: Ningbo Dalong Machinery Manufacture Co ltd
Current assignee: Ningbo Dalong Machinery Manufacture Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-14
Anticipated expiration: 2029-11-29

Abstract

The utility model relates to a three plunger reciprocating pump, including pump case, drive mechanism and the energy storage ware of setting in the pump case of telling, drive mechanism connects including rotating the bent axle of pump case one end, rotate and connect and be in 3 connecting rods on the bent axle and rotation are connected the cross head of connecting rod one end, the cross head level is slided and is connected in the pump case, the connecting rod passes through cross head round pin and rotates the connection in the cross head, the oil filler point has been seted up at pump case both ends, the through-hole has been seted up on the cross head round pin, the cross head both ends seted up with the through-hole with the corresponding waist type oiling groove of oil filler point, the cross head both ends seted up with "V" type annular groove of waist type oiling groove intercommunication, the cross head both ends are in "V" type annular groove. The utility model discloses have reducing wear, extension each parts life's effect.

Description

Three-plunger reciprocating pump

Technical Field

The utility model belongs to the technical field of the positive displacement pump and specifically relates to a three plunger reciprocating pump is related to.

Background

At present, the pump is main equipment of an oil field, and is also a large energy-consuming household, the total power consumption accounts for 40%, and how to use the pump has positive significance for energy conservation and emission reduction advocated by the nation energetically. Reciprocating pumps have the characteristics of high pressure, high efficiency and wide adaptability, and are widely used in oil fields.

The prior patent grant publication number: CN202170854U reciprocating profile control pump discloses a reciprocating profile control pump, the liquid inlet valve and the liquid outlet valve both include a valve component installed in the pump case and a limit component installed above the valve component, and a positioning bolt is installed on the middle shaft on the upper part of the gland of the limit component, the front end region of the piston is provided with a diameter-variable part which is radially reduced inwards, and a ring-shaped part with an inner diameter matched with the diameter-variable part of the piston is installed in the front end of the cylinder body.

The above prior art solutions have the following drawbacks: each working part in the reciprocating pump moves rapidly under the driving of an external motor, and can cause severe abrasion under the condition of rapid movement, thereby reducing the service life of the parts.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a through pouring into lubricating oil to the working part junction to reduce wear's three plunger reciprocating pump exists to prior art not enough.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a three plunger reciprocating pump, includes pump case, sets up drive mechanism and the energy storage ware in the pump case of telling, drive mechanism connects including rotating the bent axle of pump case one end, rotates to be connected 3 connecting rods on the bent axle and rotate to be connected the cross head of connecting rod one end, the cross head level is slided and is connected in the pump case, the connecting rod passes through cross head round pin and rotates the connection in the cross head, the oil filler point has been seted up at the pump case both ends, the through-hole has been seted up on the cross head round pin, the cross head both ends seted up with the through-hole with the corresponding waist type oil filler point of oil filler point, the cross head both ends seted up with "V" type annular of waist type oil filler point intercommunication, the cross head both ends are in "V.

By adopting the technical scheme, the external power source drives the crankshaft to rotate, 3 connecting rods connected on the crankshaft rotate in sequence under the action of the crankshaft, the other end of each connecting rod is rotatably connected in the crosshead, the crosshead cannot move in the vertical direction, so that the crosshead horizontally slides under the pushing of the connecting rod, the scheme is characterized in that lubricating oil is injected into the oil injection hole and is filled in 3 crosshead pins at one ends of the 3 connecting rods under the action of the through hole, then the lubricating oil is conveyed into the V-shaped annular groove by the waist-shaped oil injection groove, so that the end surfaces of the crosshead in contact with the inner part of a crosshead pump shell are filled with the lubricating oil, the wear reducing effect is achieved when the crosshead reciprocally slides in the pump shell, meanwhile, the oil baffle ring prevents the lubricating oil from mistakenly flowing into the end surface of the crosshead, the influence on the reciprocal sliding is avoided, and the waist-shaped oil injection groove, the position of the crosshead does not need to be adjusted, and the device is more convenient.

The utility model discloses further set up to: crosshead pin perpendicular to the through-hole seted up run through in the first logical oilhole of through-hole, crosshead pin outer end scarf joint has first bush, first bush the inner seted up communicate in the first logical oil ring groove of first logical oilhole, first bush is in the both sides of first logical oil ring groove seted up perpendicular and communicate with a plurality of first logical oil grooves of first logical oil ring groove.

Through adopting above-mentioned technical scheme, the lubricating oil of pouring into through the oil filler point is in the through-hole, come to between cross head pin and the first bush by first logical oilhole, again by first logical oil ring groove and a plurality of oil groove with lubricating oil diffusion to between cross head pin and the first bush, this scheme makes to fill between cross head pin and the first bush oil lubrication, has reduced the wearing and tearing when first bush rotates for cross head pin, makes the operation more smooth and easy on the one hand, on the other hand has prolonged the life of first bush and cross head pin.

The utility model discloses further set up to: the first bush is provided with a second oil through hole corresponding to the first oil through hole, one end of the connecting rod is provided with a third oil through hole corresponding to the second oil through hole, and the third oil through hole penetrates through the connecting rod and is communicated with one side of the crankshaft.

Through adopting above-mentioned technical scheme, when injecting lubricating oil in to the reciprocating pump through the oil filler hole, there is some lubricating oil to flow from the second oil through hole, through running through in the third oil through hole of connecting rod, comes the terminal surface of bent axle, lubricate another operation department in to the reciprocating pump, this scheme is through injecting lubricating oil to the oil filler hole in one, just can lubricate two departments in the reciprocating pump, the structure is exquisite, convenient operation has avoided trompil again on the pump case simultaneously, has accelerated production efficiency.

The utility model discloses further set up to: the crankshaft is provided with a second bush, the outer end of the second bush corresponds to the third oil through hole, a second oil through ring groove is formed in the third oil through hole, and a fourth oil through hole is formed in the second oil through ring groove.

Through adopting above-mentioned technical scheme, the lubricating oil through the transport of third oil hole spreads to between second bush and the connecting rod under the effect of second oil ring groove, reduces the wearing and tearing between second bush and the connecting rod, has increased the life of connecting rod and second bush, and simultaneously, lubricating oil flows into between second bush and the bent axle under the effect of fourth oil hole, reduces the wearing and tearing between second bush and the bent axle, has increased the life of bent axle and second bush.

The utility model discloses further set up to: the second bush comprises a front bush and a rear bush, the connecting rod comprises a connecting rod and a connecting seat, and the connecting rod and the connecting seat are connected through a bolt.

Through adopting above-mentioned technical scheme, the second bush is formed by preceding lining and back lining combination for the production of second bush is simpler, and the connecting rod is formed through bolted connection by connecting rod and connecting seat, makes the installation of connecting rod very convenient, and the bent axle components of a whole that can function independently is avoided to this scheme simultaneously, makes the bent axle can direct integrated into one piece, has guaranteed the structural strength of bent axle, has prolonged the life of bent axle.

The utility model discloses further set up to: and the inner ends of the front lining and the rear lining are provided with second oil through grooves in a cross shape corresponding to the fourth oil through hole.

Through adopting above-mentioned technical scheme, through the lubricating oil of fourth oil hole inflow between second bush and the bent axle, under the effect of second oil groove for lubricating liquid can be more abundant fill in between bent axle and the second bush, reduce the wearing and tearing between second bush and the bent axle, increased the life of bent axle and second bush.

The utility model discloses further set up to: a connecting rod is arranged between the transmission mechanism and the energy accumulator and is connected with one end of the crosshead through a flange.

Through adopting above-mentioned technical scheme, drive mechanism and energy storage ware pass through the connector and connect, and the connector plays the transition effect, avoids drive mechanism and energy storage ware to connect, when wherein arbitrary part damages, causes the area of taking along, and the hookup rod passes through flange joint in the one end of cross head simultaneously, has also provided sufficient joint strength.

The utility model discloses further set up to: the energy accumulator comprises a sealing box assembly at the lower end and a plunger slidably arranged in the middle of the sealing box assembly in a penetrating mode, and a wear-resistant layer is arranged on the outer end face of the plunger.

By adopting the technical scheme, the abrasion is generated between the lower end of the energy accumulator and the sealing box assembly besides the serious abrasion generated in the reciprocating pump during working, the plunger slides in the sealing box assembly because the plunger is required to be sealed, and the connection between the plunger and the sealing box assembly is tight.

To sum up, the utility model discloses a beneficial technological effect does:

1. through the oil through hole, the oil through groove and the like which are formed among the working components such as the crankshaft, the connecting rod, the crosshead and the like and are used for lubricating oil to circulate, all the components can be lubricated by the lubricating oil, the abrasion of the components is reduced, and the service life is prolonged;

2. the connection mode among all the parts and the positions for arranging the oil through holes and the oil through grooves ensure that the reciprocating pump has enough strength to operate;

3. through the wearing layer, reduced the wearing and tearing of plunger, prolonged the life of plunger.

Drawings

FIG. 1 is a schematic diagram of an external structure of a three-plunger reciprocating pump;

FIG. 2 is a schematic diagram of the internal structure of a three plunger reciprocating pump showing the drive mechanism;

FIG. 3 is a schematic structural view of the pump housing showing the location and configuration of the sliding sleeve;

FIG. 4 is a partial exploded view of the transmission;

fig. 5 is a partial exploded view of the transmission showing the position of the second oil passing groove.

In the figure: 1. a pump housing; 2. a transmission mechanism; 3. an accumulator; 4. a crankshaft; 5. a connecting rod; 6. a crosshead; 7. a crosshead pin; 8. a sealing box assembly; 9. a coupling rod; 10. a plunger; 11. a sliding sleeve; 12. an oil filler hole; 13. a waist-shaped oiling groove; 14. a through hole; 15. a V-shaped ring groove; 16. an oil slinger; 17. a first oil passage; 18. a first bushing; 19. a first oil through ring groove; 20. a first oil through groove; 21. a second oil through hole; 22. a third oil through hole; 23. a second bushing; 24. a connecting rod; 25. a connecting seat; 26. a front liner; 27. a back lining; 28. a second oil through ring groove; 29. a fourth oil through hole; 30. a second oil through groove; 31. and a wear-resistant layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a three plunger reciprocating pump, including pump case 1, set up drive mechanism 2 and energy storage ware 3 in the pump case 1 of telling, drive mechanism 2 is including rotating the bent axle 4 of connecting in pump case 1 one end, rotate 3 connecting rods 5 and the crosshead 6 of rotating the connection in connecting rod 5 one end of connecting on bent axle 4, crosshead 6 horizontal sliding connects in pump case 1, connecting rod 5 rotates through crosshead pin 7 and connects in crosshead 6, energy storage ware 3 includes the sealed letter assembly 8 of lower extreme and slides and wears to locate the plunger 10 at sealed letter assembly 8 middle part, be provided with coupling link 9 between plunger 10 and the crosshead 6.

Referring to fig. 1-3, a sliding sleeve 11 for a crosshead 6 to be embedded and slid is arranged inside a pump case 1, cylindrical oil injection holes 12 are formed in two ends of the pump case 1, the oil injection holes 12 penetrate through the sliding

sleeve

11, 3 crossheads 6 are embedded and slid in the sliding sleeve 11, waist-shaped oil injection grooves 13 are formed in two side ends of the crossheads 6 corresponding to the oil injection holes 12, when the crossheads 6 slide in the sliding sleeve 11, a part of the waist-shaped oil injection grooves 13 always correspond to the oil injection holes 12, through holes 14 are formed in the crosshead pins 7, the through holes 14 are parallel to the oil injection holes 12, when the crosshead pins 7 are inserted and connected in the crossheads 6, two end faces of the crosshead pins 7 are lower than inner end faces of the crossheads 6 in the waist-shaped oil injection grooves 13, so that when lubricating oil is injected into the pump case 1 through the oil injection holes 12.

Referring to fig. 2 and 3, V-shaped ring grooves 15 communicated with the waist-shaped oil filling groove 13 are formed at two ends of the crosshead 6, oil slingers 16 are arranged at the outer ends of the V-shaped ring grooves 15 at the two ends of the crosshead 6, lubricating oil can flow into the V-shaped ring grooves 15 from the waist-shaped oil filling groove 13 so as to lubricate between the crosshead 6 and the sliding sleeve 11, and the oil slingers 16 shield the lubricating oil, so that the lubricating oil can only be arranged on the side end face of the crosshead 6, and the lubricating oil is prevented from entering other parts of the sliding sleeve 11 and affecting the sliding of the crosshead 6.

Referring to fig. 4 and 5, the crosshead pin 7 is perpendicular to the through hole 14 and is provided with a first oil through hole 17 penetrating through the through hole 14, the crosshead pin 7 is rotatably connected with the connecting rod 5 through a first bush 18, the inner end of the first bush 18 is provided with a first oil through ring groove 19 communicated with the first oil through hole 17, so that the lubricating oil flows into the first oil through ring groove 19 through the first oil through hole 17, the first bush 18 is provided with a plurality of first oil through grooves 20 perpendicular to and communicated with the first oil through ring groove 19 on both sides of the first oil through ring groove 19, and the lubricating oil flows into the first oil through ring groove 20 through the first oil through ring groove 19, so that the lubricating oil can cover more areas, and the crosshead pin 7 and the first bush 18 are lubricated.

Referring to fig. 4 and 5, the first bushing 18 has a second oil passing hole 21 corresponding to the first oil passing hole 17, one end of the connecting rod 5 has a third oil passing hole 22 corresponding to the second oil passing hole 21, the third oil passing hole 22 penetrates the connecting rod 5 and communicates with one end of the crankshaft 4, the first oil passing hole 17, the second oil passing hole 21 and the third oil passing hole 22 are sequentially communicated, and the diameters thereof are the same, so that the lubricating oil can directly flow to the other end of the transmission mechanism 2 through the first oil passing hole 17, the second oil passing hole 21 and the third oil passing hole 22.

Referring to fig. 4 and 5, the crankshaft 4 and the connecting rod 5 are rotatably connected through a second bushing 23, the connecting rod 5 includes a connecting rod 24 and a connecting seat 25, the connecting rod 24 and the connecting seat 25 are connected through a bolt, the second bushing 23 includes a front bushing 26 and a rear bushing 27, the front bushing 26 is abutted to the rear bushing 27 to form an annular second bushing 23, a second oil passage ring groove 28 is formed at outer ends of the front bushing 26 and the rear bushing 27 corresponding to the third oil passage hole 22, the front bushing 26 and the rear bushing 27 are respectively provided with a fourth oil passage hole 29 in the second oil passage ring groove 28 to be communicated with the crankshaft 4, so that the lubricating oil can flow into the fourth oil passage hole 29 through the second oil passage ring groove 28, and a second oil passage groove 30 in a cross shape is formed at inner ends of the front bushing 26 and the rear bushing 27 corresponding to the fourth oil passage hole 29, so that the lubricating oil can cover more area, thereby lubricating the crankshaft 4.

Referring to fig. 4 and 5, a coupling rod 9 is arranged between the crosshead 6 and the plunger 10, the coupling rod 9 is connected with one end of the crosshead 6 through a flange, so that when the crosshead 6 slides back and forth, the plunger 10 also slides back and forth under the action of the coupling rod 9, and the outer end surface of the plunger 10 is coated with a wear-resistant layer 31, so that the service life of the plunger is prolonged.

The implementation principle of the embodiment is as follows:

external power supply drive crankshaft 4 rotates, 3 connecting rods 5 of connection on crankshaft 4 are under crankshaft 4's effect, rotate in proper order, connecting rod 5's the other end is rotated and is connected in cross head 6, and cross head 6 is unable activity in vertical direction, make cross head 6 horizontal slip under connecting rod 5's promotion, thereby the hookup rod 9 of drive connection in cross head 6 one end, drive plunger 10, make energy storage ware 3 work, through injecting lubricating oil into oil filler point 12, make lubricating oil flow through first oil through hole 17, first oil through ring groove 19, first oil through hole 20, second oil through hole 21, third oil through hole 22, second oil through ring groove 28, fourth oil through hole 29, second oil through hole 30, make each part junction all lubricated.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a three plunger reciprocating pump, includes pump case (1), sets up drive mechanism (2) and energy storage ware (3) in the pump case (1) of telling, drive mechanism (2) are connected including rotating bent axle (4), the rotation of pump case (1) one end are connected 3 connecting rod (5) and rotation on bent axle (4) are connected crosshead (6) of connecting rod (5) one end, its characterized in that: crosshead (6) horizontal slip is connected in pump case (1), connecting rod (5) are rotated through cross head round pin (7) and are connected in crosshead (6), oil filler point (12) have been seted up at pump case (1) both ends, through-hole (14) have been seted up on cross head round pin (7), crosshead (6) both ends seted up with through-hole (14) with corresponding waist type oiling groove (13) in oil filler point (12), crosshead (6) both ends seted up with "V" type annular (15) of waist type oiling groove (13) intercommunication, crosshead (6) both ends are in "V" type annular (15) outer end is provided with oil scraper ring (16).

2. The three-plunger reciprocating pump of claim 1, wherein: crosshead pin (7) perpendicular to through-hole (14) seted up run through in first logical oilhole (17) of through-hole (14), crosshead pin (7) outer end scarf joint has first bush (18), first bush (18) the inner seted up communicate in first logical oil ring groove (19) of first logical oilhole (17), first bush (18) are in vertical and intercommunication and a plurality of first logical oil groove (20) of first logical oil ring groove (19) are seted up to the both sides of first logical oil ring groove (19).

3. A three plunger reciprocating pump according to claim 2, wherein: the first bush (18) is provided with a second oil passing hole (21) corresponding to the first oil passing hole (17), one end of the connecting rod (5) is provided with a third oil passing hole (22) corresponding to the second oil passing hole (21), and the third oil passing hole (22) penetrates through the connecting rod (5) and is communicated with one side of the crankshaft (4).

4. A three plunger reciprocating pump according to claim 3, wherein: be provided with second bush (23) on bent axle (4), second bush (23) outer end corresponds to second oil through ring groove (28) have been seted up in third oil through hole (22), second bush (23) are in fourth oil through hole (29) have been seted up in second oil through ring groove (28).

5. The three-plunger reciprocating pump of claim 4, wherein: the second bushing (23) comprises a front bushing (26) and a rear bushing (27), the connecting rod (5) comprises a connecting rod (24) and a connecting seat (25), and the connecting rod (24) and the connecting seat (25) are connected through a bolt.

6. The three-plunger reciprocating pump of claim 5, wherein: the inner ends of the front lining (26) and the rear lining (27) are provided with second oil through grooves (30) which are crossed corresponding to the fourth oil through hole (29).

7. The three-plunger reciprocating pump of claim 6, wherein: drive mechanism (2) with be provided with coupling rod (9) between energy storage ware (3), coupling rod (9) through flange joint with the one end of cross head (6).

8. The three-plunger reciprocating pump of claim 7, wherein: the energy accumulator (3) comprises a sealing box assembly (8) at the lower end and a plunger (10) slidably arranged in the middle of the sealing box assembly (8), and a wear-resistant layer (31) is arranged on the outer end face of the plunger (10).