CN207526657U - Opposed type linear reciprocating pump driving mechanism - Google Patents
Opposed type linear reciprocating pump driving mechanism Download PDFInfo
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- CN207526657U CN207526657U CN201721437052.0U CN201721437052U CN207526657U CN 207526657 U CN207526657 U CN 207526657U CN 201721437052 U CN201721437052 U CN 201721437052U CN 207526657 U CN207526657 U CN 207526657U
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- eccentric shoe
- crank throw
- eccentric
- sliding block
- reciprocating pump
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Abstract
A kind of opposed type linear reciprocating pump driving mechanism, including slide block mechanism, bent axle and eccentric shoe, slide block mechanism is made of sliding block, two connecting rods and two pistons, and the central axis of two pistons is orthogonal with the central axis of sliding block；Eccentric shoe is set on the crank throw of bent axle, on eccentric shoe, the piston coaxial heart is inserted into two in reciprocating pump rack symmetrical slideways sliding block concentric locking collar；Eccentric shoe is while following crank throw around crank rotation around the reversed rotation of crank throw, and the central axis of eccentric shoe remains parallel with the central axis of crank throw in entire rotation process, make eccentric shoe movement locus near linear in the horizontal direction, by eccentric shoe band movable slider horizontal rectilinear motion, and then make two pistons linear reciprocating motion in two symmetrical slideways of reciprocating pump respectively.
Description
Technical field
The utility model belongs to reciprocal pump technical field, and in particular to a kind of opposed type linear reciprocating pump driving mechanism.
Background technology
Conventional reciprocating is pumped in addition to direct-acting pump (such as steam reciprocating pump, hydraulic linear actuator reciprocating pump), mainly crank
(crank throw) link mechanism reciprocating pump, basic principle are crank (crank throw), connecting rod, crosshead pin, the crosshead handle by bent axle
The rotary motion of prime mover (motor, diesel engine etc.) is converted into crosshead reciprocating motion, then drives reciprocal pump liquid by crosshead
Power end plug moves reciprocatingly, due to plunger Packed closed cavity athletic meeting cause reciprocating pump hydraulic-end closed cavity hold
Product and pressure change, so as to realize the conveying to liquid medium by sucking, discharge valve.Traditional crank (crank throw) link mechanism
Reciprocating pump is since connecting rod is swung centered on crosshead pin in crank rotation in α angular ranges, so pump group machine can be caused
Tool vibrates, and pump group motion artifacts are big, reciprocating pump mass flow discrepancy, generates flow pulsation and pressure fluctuation, to pump group normal operation and
Pipe-line system safe operation is very unfavorable.Specifically it is also easy to produce following drawback：
1st, lining of connecting rod small end and crosshead pin be easy to cause insufficient lubrication because of partial rotational, and abrasion is uneven, make its into
Out of order place is easiest to for Reciprocatin pump power end, when as hydraulic resistance balance formula booster pump, suction pressure variation is easier
Lining of connecting rod small end is caused even to be burnt to death with crosshead pin insufficient lubrication, seriously affects its service life.
2nd, since connecting rod is swung in α angular ranges, one can be generated to rack slide, crosshead outer circle by crosshead pin
A power (lateral force) for acting perpendicularly to rack slide, increase crosshead and rack slide frictional force cause its abrasion to accelerate, make
With the lost of life, while plunger eccentric wear is will also result in, make plunger and sealing reduced service life.
3rd, exist due to connecting rod around the rotary motion of bent axle and two kinds of movements are swung in α angular ranges, transport crosshead
Acceleration is continually changing in dynamic, so as to cause reciprocating pump mass flow discrepancy even, generates flow pulsation and pressure fluctuation, this arteries and veins
Dynamic is very unfavorable to pump group normal operation and pipe-line system safe operation.
4th, when conventional reciprocating pump makes opposed type structural shape, big end is complicated, needs two different connecting rods
And bearing bush structure, make pump group complicated, vulnerable part increases, and volume is larger.
Utility model content
The utility model provides a kind of opposed type linear reciprocating pump driving mechanism, is asked existing for conventional reciprocating pump with overcoming
Topic.
Technical solution is used by the utility model：A kind of opposed type linear reciprocating pump driving mechanism, it is characterised in that：
The driving mechanism includes slide block mechanism, bent axle and eccentric shoe, sliding block that the slide block mechanism is had by middle part, from sliding block two
Hold the piston composition that two connecting rods extending and two interlinking lever ends have, and the central axis of two pistons and sliding block
Central axis is orthogonal；Eccentric shoe is set on the crank throw of the bent axle, the sliding block concentric locking collar is described on eccentric shoe
The piston coaxial heart is inserted into two in reciprocating pump rack symmetrical slideways；The eccentric shoe is following crank throw around crank rotation
While around crank throw rotation, the sense of rotation of the eccentric shoe and the rotation direction of crank throw on the contrary, and in entire rotation process
Central axis and the central axis of crank throw of eccentric shoe remain parallel, make eccentric shoe movement locus in the horizontal direction
Near linear by eccentric shoe band movable slider horizontal rectilinear motion, and then makes two pistons right at two of reciprocating pump respectively
Claim linear reciprocating motion in slideway.
The sliding block is located by connecting by two semi arch structures by screw I, pin I；The eccentric shoe is by two
A semicircle eccentric arc structure is formed by connecting by screw II.
Sliding sleeve I is equipped between the sliding block and eccentric shoe, makes to slide by sliding sleeve I between the sliding block and eccentric shoe
Contact, and the oil circuit feed lubrication by having in connecting rod, piston；Sliding sleeve II is equipped between the eccentric shoe and crank throw, is made
By II sliding contact of sliding sleeve between the eccentric shoe and crank throw, and the oil circuit feed lubrication by having in bent axle, crank throw.
The utility model has the following advantages that compared with prior art and effect：
1st, the utility model has given up the lining of connecting rod small end and crosshead pin of conventional reciprocating pump driving mechanism, therefore, disappears
In addition to lining of connecting rod small end and crosshead pin insufficient lubrication, crosshead and rack slide frictional force are big, its abrasion is caused to accelerate, is made
With the lost of life, while plunger eccentric wear is will also result in, make two trouble points of plunger and sealing reduced service life, improve reciprocal
The reliability at pump power end.
2nd, connecting rod and crosshead are designed to a part (slide block mechanism) by the utility model, pass through cross without connecting rod
Head acts on the lateral force of rack slide, so practical function is mainly slide block mechanism dead weight in the lateral force of rack slide, because
Abrasion between this slide block mechanism and rack slide will become very little, so being pumped compared to conventional reciprocating, the utility model rack is slided
Road, slide block mechanism, plunger and its service life of sealing will be largely increased, so as to extend the overhaul time of power end and fluid end
Vulnerable part service life.
3rd, the utility model crankshaft eccentric only has eccentric 1/2 of traditional crank link mechanism reciprocating pump crankshaft, and only
The straight reciprocating motion of slide block mechanism, without connecting rod swing, therefore, the flow pulsation of pump is smaller than conventional reciprocating pump.
4th, the utility model compares traditional opposed type reciprocating pump, has simple in structure, few easy workout part and smaller vibration
And noise.
5th, it can realize when the utility model is used as booster pump and absolutely balance suction pressure, and suck pressure
Power variation works normally no any influence to pump group, changes greatly especially suitable for suction pressure or suction pressure can not determine standard
The place of true pressure uses.
Description of the drawings
Fig. 1 is 1 structure diagram of the utility model motion state；
Fig. 2 is 2 structure diagram of the utility model motion state；
Fig. 3 is 3 structure diagram of the utility model motion state；
Fig. 4 is 4 structure diagram of the utility model motion state；
Fig. 5 is a kind of structural front view of embodiment of the utility model；
Fig. 6 is a kind of structure top view of embodiment of the utility model.
Specific embodiment
Below in conjunction with the accompanying drawings 1,2,3,4,5,6 and specific embodiment the utility model is described in detail.
A kind of opposed type linear reciprocating pump driving mechanism, including slide block mechanism 1, bent axle 2 and eccentric shoe 3, the sliding block
Sliding block 1-1 that mechanism 1 is had by middle part, the two connecting rod 1-2 extended from sliding block 1-1 both ends and two connecting rod 1-2 ends
The piston 1-3 compositions having, and the central axis of two piston 1-3 is orthogonal with the central axis of sliding block 1-1；The bent axle 2
Eccentric shoe 3 is set on crank throw 2-1, on eccentric shoe 3, the piston 1-3 is concentric to be inserted the sliding block 1-1 concentric locking collars
In two symmetrical slideways 4 in reciprocating pump rack；The eccentric shoe 3 is while following crank throw 2-1 to be rotated around bent axle 2
Around crank throw 2-1 rotations, the sense of rotation of the eccentric shoe 3 is with the rotation direction of crank throw 2-1 on the contrary, and in entire rotation process
The central axis of eccentric shoe 3 remains parallel with the central axis of crank throw 2-1, makes 3 fortune in the horizontal direction of eccentric shoe
Dynamic rail mark near linear by eccentric shoe 3 with movable slider 1-1 horizontal rectilinear motions, and then makes two piston 1-3 respectively past
Linear reciprocating motion in the two symmetrical slideways 4 pumped again.
The sliding block 1-1 is located by connecting by two semi arch structures by I 1-4 of screw, I 1-5 of pin, convenient for dress
Match；The eccentric shoe 3 is formed by connecting by two semicircle eccentric arc structures by II 3-1 of screw, convenient for assembling.The sliding block
Sliding sleeve I 7 is equipped between 1-1 and eccentric shoe 3；Sliding sleeve II 8 is equipped between the eccentric shoe 3 and crank throw 2-1.
By I 7 sliding contact of sliding sleeve between sliding block 1-1 and eccentric shoe 3 described in the utility model, and by connecting rod 1-2,
9 feed lubrication of oil circuit having in piston 1-3；By II 8 sliding contact of sliding sleeve between the eccentric shoe 3 and crank throw 2-1, and
Pass through 10 feed lubrication of oil circuit having in bent axle 2, crank throw 2-1.
Operation principle：Bent axle 2 by crank throw 2-1 drive eccentric shoe 3, while eccentric shoe 3 is rotated with bent axle 2 itself
Also around the reversed rotations of crank throw 2-1 in sliding block 1-1 holes, since the crank throw 2-1 and eccentric shoe 3 of bent axle 2 have bias, so partially
Approximate straight line after rotation of the heart sliding block 3 with bent axle 2 and the movement locus synthesis around the reversed rotations of crank throw 2-1, makes bias
While sliding block 3 rotates in sliding block 1-1 holes and sliding block 1-1 is pushed to make horizontal rectilinear motion, and then drive two 1-3 points of pistons
Linear reciprocating motion in two symmetrical slideways 4 not in reciprocating pump rack, two piston 1-3 drive fluid power by connecting rod 6 again
Imbibition and drain are completed in the piston reciprocation movement at end 5.
The utility model changes traditional crank (crank throw) link mechanism from structure, passes through crank throw (crank), bias
The rotary motion of prime mover (motor, diesel engine etc.) is converted into the linear reciprocating motion of slide block mechanism by sliding block, slide block mechanism,
Then moved reciprocatingly the conveying realized to liquid medium by slide block mechanism drive reciprocating pump hydraulic-end plunger, therefore slide block mechanism
The lateral force for acting on rack slide is mainly that slide block mechanism dead weight generates, and therefore, has simple in structure, stable movement, pump
Group vibration and noise are small, few easy workout part and service life are longer, and uniform flow is pulsed the advantages that small.
The preferred embodiment of above-described embodiment, only the utility model is not used for limiting the implementation model of the utility model
It encloses, therefore all equivalent variations done with content described in the utility model claims, should all be included in the utility model right will
Within the scope of asking.
Claims (3)
1. a kind of opposed type linear reciprocating pump driving mechanism, it is characterised in that：The driving mechanism includes slide block mechanism (1), song
Axis (2) and eccentric shoe (3), sliding block (1-1) that the slide block mechanism (1) is had by middle part extend from sliding block (1-1) both ends
Two connecting rods (1-2) and piston (1-3) composition that has of two connecting rod (1-2) ends, and the center of two pistons (1-3)
Axis is orthogonal with the central axis of sliding block (1-1)；Eccentric shoe (3) is set on the crank throw (2-1) of the bent axle (2), it is described
Sliding block (1-1) concentric locking collar is on eccentric shoe (3), concentric two be inserted into reciprocating pump rack of piston (1-3)
In symmetrical slideway (4)；The eccentric shoe (3) while crank throw (2-1) is followed to be rotated around bent axle (2) around crank throw (2-1) from
Turn, the sense of rotation of the eccentric shoe (3) is with the rotation direction of crank throw (2-1) on the contrary, and eccentric sliding in entire rotation process
The central axis of block (3) remains parallel with the central axis of crank throw (2-1), makes eccentric shoe (3) fortune in the horizontal direction
Dynamic rail mark near linear by eccentric shoe (3) band movable slider (1-1) horizontal rectilinear motion, and then makes two pistons (1-3) point
The linear reciprocating motion not in two symmetrical slideways (4) of reciprocating pump.
2. a kind of opposed type linear reciprocating pump driving mechanism according to claim 1, it is characterised in that：Sliding block (the 1-
1) it is located by connecting by two semi arch structures by screw I (1-4), pin I (1-5)；The eccentric shoe (3) is by two
Semicircle eccentric arc structure is formed by connecting by screw II (3-1).
3. a kind of opposed type linear reciprocating pump driving mechanism according to claim 1 or 2, it is characterised in that：The sliding block
Sliding sleeve I (7) is equipped between (1-1) and eccentric shoe (3), is made between the sliding block (1-1) and eccentric shoe (3) through sliding sleeve I
(7) sliding contact, and oil circuit (9) feed lubrication by having in connecting rod (1-2), piston (1-3)；The eccentric shoe (3)
Sliding sleeve II (8) is equipped between crank throw (2-1), is made sliding by sliding sleeve II (8) between the eccentric shoe (3) and crank throw (2-1)
Dynamic contact, and oil circuit (10) feed lubrication by having in bent axle (2), crank throw (2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721437052.0U CN207526657U (en) | 2017-10-27 | 2017-10-27 | Opposed type linear reciprocating pump driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721437052.0U CN207526657U (en) | 2017-10-27 | 2017-10-27 | Opposed type linear reciprocating pump driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207526657U true CN207526657U (en) | 2018-06-22 |
Family
ID=62571974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721437052.0U Active CN207526657U (en) | 2017-10-27 | 2017-10-27 | Opposed type linear reciprocating pump driving mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN207526657U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113494433A (en) * | 2021-08-11 | 2021-10-12 | 中海石油(中国)有限公司 | Piston type drilling pump for drilling operation |
-
2017
- 2017-10-27 CN CN201721437052.0U patent/CN207526657U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113494433A (en) * | 2021-08-11 | 2021-10-12 | 中海石油(中国)有限公司 | Piston type drilling pump for drilling operation |
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