CN216198735U

CN216198735U - Novel mud pump

Info

Publication number: CN216198735U
Application number: CN202122379657.1U
Authority: CN
Inventors: 杨以辉; 刘睿; 蒋凯; 耿瑞琪; 燕云涛; 时亮; 孙安锋; 刘金龙; 徐仁锋; 郭凯凯; 张艳艳; 王奇斋; 付传红; 刘海涛; 王红妹; 孙路路; 李振兴
Original assignee: Shandong Kerui Oil And Gas Equipment Co ltd
Current assignee: Shandong Kerui Oil And Gas Equipment Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-04-05
Anticipated expiration: 2031-09-29

Abstract

The utility model discloses a novel slurry pump, which comprises a pump shell assembly, a discharge manifold and a suction manifold, wherein the pump shell assembly comprises a pump shell, a discharge pipe manifold and a suction pipe manifold; a crankshaft is arranged in the pump shell assembly; the inlet end of the discharge manifold is provided with a discharge valve box; the outlet end of the suction manifold is provided with a suction valve box; a connecting tee joint is arranged between the liquid inlet end of the discharge valve box and the liquid outlet end of the suction valve box; a connecting box is arranged between the connecting tee joint and the crankshaft; a connecting rod power assembly is arranged in the connecting box; the connecting rod power assembly comprises a connecting rod body, a sliding sleeve, a small connecting rod and a cylinder sleeve; one end of the connecting rod body is rotationally connected with the crankshaft, and the other end of the connecting rod body is provided with a crosshead; the crosshead is embedded in the sliding sleeve and is rotationally connected with one end of the small connecting rod; the other end of the small connecting rod is provided with a piston; the piston is embedded in the cylinder sleeve; the cylinder sleeve is communicated with the connecting tee. Compared with the prior art, the utility model has the beneficial effects that: small volume, light weight and reliable performance, and can meet the requirements of quick hoisting and moving.

Description

Novel mud pump

Technical Field

The utility model relates to the field of mud pumps, in particular to a novel mud pump.

Background

The drilling mud pump is one of core components in the drilling process, and can provide circulating drilling fluid and high-pressure power for the underground, so that the effects of cooling a drill bit, lubricating the drill bit, carrying rock debris, killing a well and the like can be achieved. The drilling mud pump mainly comprises a mud pump power end, a mud pump hydraulic end and the like. The traditional mud pump has the following defects: firstly, the connecting end of the connecting rod and the crankshaft adopts a rolling bearing connecting structure, so that the crankshaft has a large and heavy structure, and the crankshaft is supported at two ends and has poor stress condition; secondly, the power shaft is arranged above the crankshaft, so that the gravity center height of the whole machine is improved, and the vibration in the operation process is increased; thirdly, the stress end face of the connecting rod end is small, so that equipment is easily abraded; fourthly, the whole machine is large in size and heavy in weight, and is not suitable for rapid transportation in areas with poor road conditions; and fifthly, the pump shell and the connecting box are of an integrated structure, and the pump shell and the connecting box are difficult to process and manufacture.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel slurry pump which is characterized by small volume, light weight and reliable performance and can meet the requirements of quick hoisting and transporting.

In order to achieve the purpose, the utility model provides the following technical scheme: a novel slurry pump comprises a pump shell assembly, a discharge manifold and a suction manifold; a crankshaft is arranged in the pump shell assembly; the inlet end of the discharge manifold is provided with a discharge valve box; the outlet end of the suction manifold is provided with a suction valve box; a connecting tee joint is arranged between the liquid inlet end of the discharge valve box and the liquid outlet end of the suction valve box and is respectively communicated with a first port and a second port of the connecting tee joint; a connecting box is arranged between the connecting tee joint and the crankshaft; a connecting rod power assembly is arranged in the connecting box; the connecting rod power assembly comprises a connecting rod body, a sliding sleeve, a small connecting rod and a cylinder sleeve; one end of the connecting rod body is rotatably connected with the crankshaft, and the other end of the connecting rod body is provided with a crosshead; the crosshead is embedded in the sliding sleeve and is rotationally connected with one end of the small connecting rod; the other end of the small connecting rod is provided with a piston; the piston is embedded in the cylinder sleeve; the cylinder sleeve is communicated with a third port of the connecting tee.

Preferably, the crankshaft comprises at least 2 shaft seats; a crank pin is arranged between the shaft seats; the axle center of the crank pin is not coincident with the axle center of the axle seat; two ends of the crankshaft are provided with shaft necks; one end of the connecting rod body is connected with the crank pin through a split sliding bearing; an oil passage hole is formed among the journal, the shaft seat and the crank pin, and a through hole is formed in the crank pin.

As optimization, a power shaft is further arranged in the pump shell assembly; pinions are arranged at two ends of the power shaft; the large gears are arranged outside the two ends of the crankshaft; the gearwheel and the shaft neck are fixedly connected through keys; the big gear wheel is meshed with the small gear wheel.

Preferably, the outer parts of the large gear and the small gear are provided with protective covers.

Preferably, the crosshead is connected with the small connecting rod through a connecting rod pin, and a tile is arranged between the crosshead and the small connecting rod.

Preferably, the number of the crank pins corresponds to the number of the discharge valve boxes and the suction valve boxes, and the discharge valve boxes and the suction valve boxes are in one-to-one correspondence.

Preferably, the number of the crank pins is at least 2, and the positions of the crank pins between the shaft seats are not coincident.

Preferably, a cylindrical roller bearing is arranged outside the shaft seat.

Preferably, a buffer tank is arranged at the inlet end of the suction manifold.

Preferably, the pump shell assembly, the discharge manifold and the suction manifold are integrally fixed on the base, and four ends of the base are provided with hanging holes.

As optimization, a lubricating spray pipe is further arranged; a lubricating branch pipe is arranged on the lubricating spray pipe; the lubricating branch pipe is communicated with the cylinder sleeve.

Compared with the prior art, the utility model has the following beneficial effects: the two sides of each crank pin are supported by cylindrical roller bearings, so that the rigidity of the main shaft is increased, and the weight of the crankshaft can be greatly reduced. The connecting position of the connecting rod and the crank pin is a split sliding bearing structure, and compared with the rolling bearing structure designed originally, the weight of the crankshaft and the connecting rod can be reduced remarkably. The crankshaft is provided with communicated oil passage holes, and pressure lubricating oil can enter each cylindrical roller bearing through the oil passage holes, so that reliable lubrication is ensured. Be equipped with corresponding valve box, but the processing degree of difficulty of greatly reduced than former integral type casing design to processing cost has been reduced. The suction valve box and the discharge valve box are separately designed and connected, compared with the conventional integrated valve box, the integrated valve box is easier to process and more convenient to maintain, and can be independently replaced after the suction valve box or the discharge valve box is damaged, so that the use cost of a customer can be reduced.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the connection structure of the large gear and the small gear 8 of the present invention.

Fig. 3 is a schematic view of the internal structure of the present invention.

Fig. 4 is a schematic perspective view of a crankshaft according to the present invention.

FIG. 5 is a schematic view of the connection structure of the connecting rod body and the sliding sleeve according to the present invention.

The pump comprises a pump shell assembly 1, a discharge manifold 2, an intake manifold 3, a discharge valve box 4, an intake valve box 5, a crankshaft 6, a large gear 7, a small gear 8, a connecting rod body 9, a sliding sleeve 10, a tile 11, a small connecting rod 12, a cylinder sleeve 13, a piston 14, a one-way valve 15, a connecting tee joint 16, a lubricating spray pipe 17, a lubricating branch pipe 18, a shaft neck 19, a shaft seat 20, an oil channel hole 23, a crank pin 22, a buffer tank 23 and a connecting rod pin 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A novel slurry pump comprises a pump shell assembly 1, a discharge manifold 2 and a suction manifold 3; a crankshaft 6 is arranged in the pump shell assembly 1; the inlet end of the discharge manifold 2 is provided with a discharge valve box 4; the outlet end of the suction manifold 3 is provided with a suction valve box 5; a connecting tee 16 is arranged between the liquid inlet end of the discharge valve box 4 and the liquid outlet end of the suction valve box 5 and is respectively communicated with a first port and a second port of the connecting tee 16; a connecting box is arranged between the connecting tee 16 and the crankshaft 6; the connecting box is connected to the pump shell assembly 1, and the connecting box and the pump shell assembly are positioned through pins and connected through bolts, so that accurate positioning and reliable connection can be guaranteed. Meanwhile, the split type structure design is adopted, compared with the original integral design, the processing is easier, and the weight of a single piece is lighter and more convenient to disassemble, assemble and transport.

Meanwhile, a sealing groove is further formed in the end face, connected with the pump shell assembly 1, of the connecting box, a sealing ring is installed in the sealing groove, the sealing groove is sealed through the sealing ring, and lubricating oil at the power end is prevented from leaking from a gap between the connecting box and the pump shell assembly.

A connecting rod power assembly is arranged in the connecting box; the connecting rod power assembly comprises a connecting rod body 9, a sliding sleeve 10, a small connecting rod 12 and a cylinder sleeve 13; one end of the connecting rod body 9 is rotationally connected with the crankshaft 6, and the other end of the connecting rod body 9 is provided with a crosshead; the crosshead is embedded in the sliding sleeve 10 and is rotationally connected with one end of the small connecting rod 12; the other end of the small connecting rod 12 is provided with a piston 14; the piston 14 is embedded in the cylinder sleeve 13; the cylinder sleeve 13 is communicated with a third port of a connecting tee 16. The crosshead is connected with the small connecting rod 12 through a connecting rod pin 24, and a tile 11 is arranged between the crosshead and the small connecting rod 12.

The motion state of the connecting rod power assembly has two types:

during the intake stroke of the piston 14, the crankshaft 6 pulls the crosshead back through the connecting rod body 9 by the connecting rod pin 24, and the connecting rod pin 144 receives force.

During the discharge stroke of the piston 14, the connecting rod body 9 is in contact with the tiles 11 in the crosshead, and the connecting rod pin 144 is not stressed, so that the contact area between the connecting rod body 9 and the crosshead can be increased, the contact stress is reduced, and the lubricating effect is better.

The crankshaft 6 comprises at least 2 shaft seats 20; a crank pin 22 is arranged between the shaft seats 20; the axle center of the crank pin 22 is not coincident with the axle center of the axle seat 20; two ends of the crankshaft 6 are provided with shaft necks 19; one end of the connecting rod body 9 is connected with the crank pin 22 through a split sliding bearing; an oil passage hole 23 is formed among the journal 19, the shaft seat 20 and the crank pin 22, and a through hole is formed on the crank pin 22. The communicated oil passage holes 23 enable pressure lubricating oil to reach the crank pins 22, and reliable lubrication is guaranteed.

As shown in fig. 4, in the present embodiment, the crankshaft 6 is a three-connecting-rod four-support structure, so that the overall rigidity is higher, the size of the crankshaft is smaller, and the weight of the crankshaft is lighter.

A power shaft is also arranged in the pump shell assembly 1; both ends of the power shaft are provided with small gears 8; the two ends of the crankshaft 6 are externally provided with a large gear 7; the gearwheel 7 and the shaft neck 19 are fixedly connected through keys; the gearwheel 7 and the pinion 8 mesh with each other. And protective covers are arranged outside the large gear 7 and the small gear 8.

The number of the crank pins 22 corresponds to the number of the discharge valve housing 4 and the suction valve housing 5, and there is one-to-one correspondence therebetween.

The crank pins 22 are provided in at least 2 numbers, and the positions of the crank pins 22 between the shaft seats 20 do not coincide.

A cylindrical roller bearing is arranged outside the shaft seat 20. The cylindrical roller bearing plays a supporting role, and the weight of the crankshaft 6 can be greatly reduced while the rigidity of the crankshaft 6 is increased.

The inlet end of the suction manifold 3 is provided with a buffer tank 23.

The pump shell assembly 1, the discharge manifold 2 and the suction manifold 3 are integrally fixed on the base, and four ends of the base are provided with hanging holes.

The working principle is as follows:

the power shaft is driven to rotate by a motor, and the large gear 8 is driven to rotate by meshing of the small gear 8 and the large gear 7, so that the crankshaft 6 rotates.

The crankshaft 6, the connecting rod body 9, the sliding sleeve 10, the small connecting rod 12, the cylinder sleeve 13 and the piston 14 are combined to form a crank-slider mechanism, and conversion of rotary motion to reciprocating linear motion is completed.

So that the piston 14 continuously makes reciprocating linear motion in the cylinder sleeve 13, and the suction and discharge operation of the pump is realized.

When the piston 14 moves leftward, the liquid is sucked into the suction valve box 5 after being buffered by the buffer tank 23 at the suction manifold 3 by the suction force generated by the piston 14, the check valve 15 in the suction valve box 5 is opened, the liquid flows in, and the check valve 15 in the discharge valve box 4 is closed.

When the piston 14 moves to the right, the liquid is discharged into the discharge manifold 2 through the discharge valve housing 4 by the thrust generated by the piston 14, and in this process, the check valve 15 of the discharge valve housing 4 is opened and the check valve 15 in the suction valve housing 5 is closed.

Furthermore, a lubricating spray pipe 17 is also arranged; a lubricating branch pipe 18 is arranged on the lubricating spray pipe 17; the lubricating branch pipe 18 is communicated with the cylinder sleeve 13. Lubricating oil is injected into the cylinder sleeve 13 through the lubricating branch pipe 18, and the lubricating effect is ensured.

Claims

1. A novel mud pump is characterized in that: comprises a pump shell assembly (1), a discharge manifold (2) and a suction manifold (3);

a crankshaft (6) is arranged in the pump shell assembly (1);

the inlet end of the discharge manifold (2) is provided with a discharge valve box (4);

the outlet end of the suction manifold (3) is provided with a suction valve box (5);

a connecting tee joint (16) is arranged between the liquid inlet end of the discharge valve box (4) and the liquid outlet end of the suction valve box (5), and is respectively communicated with a first port and a second port of the connecting tee joint (16);

a connecting box is arranged between the connecting tee joint (16) and the crankshaft (6); a connecting rod power assembly is arranged in the connecting box; the connecting rod power assembly comprises a connecting rod body (9), a sliding sleeve (10), a small connecting rod (12) and a cylinder sleeve (13);

one end of the connecting rod body (9) is rotatably connected with the crankshaft (6), and the other end of the connecting rod body (9) is provided with a crosshead; the crosshead is embedded in the sliding sleeve (10) and is rotationally connected with one end of the small connecting rod (12); the other end of the small connecting rod (12) is provided with a piston (14); the piston (14) is embedded in the cylinder sleeve (13); the cylinder sleeve (13) is communicated with a third port of the connecting tee joint (16).

2. The novel mud pump as set forth in claim 1, wherein: the crankshaft (6) comprises at least 2 shaft seats (20); a crank pin (22) is arranged between the shaft seats (20); the axle center of the crank pin (22) is not coincident with the axle center of the axle seat (20); one end of the connecting rod body (9) is connected with the crank pin (22) through a split sliding bearing; both ends of the crankshaft (6) are provided with shaft necks (19); an oil passage hole (23) is formed among the journal (19), the shaft seat (20) and the crank pin (22), and a through hole is formed in the crank pin (22).

3. The novel mud pump as set forth in claim 2, wherein: a power shaft is also arranged in the pump shell assembly (1); both ends of the power shaft are provided with small gears (8); the two ends of the crankshaft (6) are externally provided with a large gear (7); the gearwheel (7) and the shaft neck (19) are fixedly connected through keys; the big gear (7) is meshed with the small gear (8).

4. The novel mud pump as set forth in claim 3, wherein: and protective covers are arranged outside the large gear (7) and the small gear (8).

5. The novel mud pump as set forth in claim 1, wherein: the crosshead is connected with the small connecting rod (12) through a connecting rod pin (24), and a tile (11) is arranged between the crosshead and the small connecting rod (12).

6. The novel mud pump as set forth in claim 2, wherein: the number of the crank pins (22) corresponds to the number of the discharge valve boxes (4) and the suction valve boxes (5), and the crank pins, the discharge valve boxes and the suction valve boxes are in one-to-one correspondence.

7. The novel mud pump as set forth in claim 6, wherein: the number of the crank pins (22) is at least 2, and the positions of the shaft seats (20) where the crank pins (22) are located are not coincident.

8. The novel mud pump as set forth in claim 2, wherein: and a cylindrical roller bearing is arranged outside the shaft seat (20).

9. The novel mud pump as set forth in claim 1, wherein: the pump shell assembly (1), the discharge manifold (2) and the suction manifold (3) are integrally fixed on the base, and four ends of the base are provided with hanging holes.

10. The novel mud pump as set forth in claim 1, wherein: a lubricating spray pipe (17) is also arranged; a lubricating branch pipe (18) is arranged on the lubricating spray pipe (17); the lubricating branch pipe (18) is communicated with the cylinder sleeve (13).