CN2793369Y - Automatic ram-type centering mechanism of reciprocating pump - Google Patents
Automatic ram-type centering mechanism of reciprocating pump Download PDFInfo
- Publication number
- CN2793369Y CN2793369Y CN 200520102598 CN200520102598U CN2793369Y CN 2793369 Y CN2793369 Y CN 2793369Y CN 200520102598 CN200520102598 CN 200520102598 CN 200520102598 U CN200520102598 U CN 200520102598U CN 2793369 Y CN2793369 Y CN 2793369Y
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- CN
- China
- Prior art keywords
- plunger
- crosshead
- reciprocating pump
- plunger piston
- hold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an automatic centering mechanism for a plunger piston of a reciprocating pump, which comprises a crosshead which is connected with a reciprocating driving mechanism, and a plunger piston, wherein one end of the plunger piston is arranged in a plunger piston cavity through a fastening piece, and the other end of the plunger piston penetrates through a stuffing and a guide sleeve; the stuffing and the guide sleeve are arranged on a stuffing box; the end part of the plunger piston is connected with the crosshead through a sliding assembly with a spherical surface. The sliding assembly with the spherical surface is composed of a spherical surface seat and a hemispheroid. The spherical surface seat is arranged at the bottom part of the plunger piston cavity, the hemispheroid is positioned in the spherical surface of the spherical surface seat and the hemispheroid is fixedly connected with the end part of the plunger piston. The utility model provides an automatic centering mechanism for a plunger piston of a reciprocating pump, which has the advantages that the centering performance of the plunger piston and the crosshead is good, the eccentric wear can be avoided effectively when the plunger piston and the stuffing work and the reliability is high.
Description
(1) technical field
The utility model relates to a kind of reciprocating pump plunger (piston rod) automatic centering mechanism.
(2) background technique
Reciprocating pump is a kind of application engineering goods very widely, plays an important role at industrial industry-by-industry.With reference to Fig. 1, eccentric wear takes place when being plunger (piston rod) (7) and filler (8) work in one of main failure forms of reciprocating pump, and heating is serious, quick abrasion, and the life-span is short.Have a strong impact on the reliability of pump.
The crosshead of common reciprocating pump (1) mainly is made up of crosshead (1), snap ring (4), pad (5), hold-down ring (6), plunger (piston rod) (7), filler (8), stuffing box (9), guide sleeve (10) etc. shown in (two) as scheming with plunger (piston rod) (7) coupling mechanism.Crosshead (1) directly links with planar end surface with plunger (piston rod) (7), and plunger (piston rod) (7) is installed in the plunger cavity (11) of crosshead (1).Under the driving of reciprocator, crosshead (1) drive plunger (piston rod) (7) is reciprocating in filler (8), guide sleeve (10).Because of contact with plunger (piston rod) (7) error of perpendicularity of end face of crosshead (1), make crosshead (1), plunger (piston rod) (7) require to be difficult to guarantee with each coaxality of guide sleeve (10).Cause plunger (piston rod) (7) and filler (8), guide sleeve to produce eccentric wear between (10), cause that plunger (piston rod) (7) heating is serious, easy to wear, working life short, thereby influence the reliability of reciprocating pump.
(3) model utility content
The deficiency of eccentric wear, poor reliability takes place during for poor to neutrality between the reciprocating pump plunger that overcomes prior art and the crosshead, plunger and filler work, the utility model provides a kind of plunger and crosshead good to neutrality, eccentric wear takes place when effectively avoiding the work of plunger and filler, the reciprocating pump of good reliability plunger automatic centering mechanism.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of reciprocating pump plunger automatic centering mechanism, comprise the crosshead, the plunger that are connected with reciprocating drive mechanism, described plunger one end is installed in the plunger cavity of crosshead by fastening piece, the described plunger the other end passes filler, guide sleeve, and described filler and guide sleeve are installed in the stuffing box; Described plunger end is connected by the sphere sliding assembly with described crosshead; Described sphere sliding assembly is made up of spheric seating, hemisphere, and described spheric seating is installed in the bottom of described plunger cavity, and described hemisphere is positioned at the sphere of spheric seating, and described hemisphere is fixedlyed connected with plunger end.
Further, described fastening piece comprise the middle part that is installed on plunger cavity snap ring and pad, be installed on the hold-down ring of plunger cavity outer end, described snap ring, pad, hold-down ring closely are connected with plunger.
Further again, described plunger cavity inwall is provided with internal thread, and described hold-down ring is socketed on the inwall of plunger cavity.
Further, the aperture of described hold-down ring is bigger than plunger diameter.Help crosshead and plunger Chinese style is connected.
Described reciprocating pump is a horizontal type structure.
The utility model is to set up spheric seating and hemisphere between the crosshead of conventional construction and plunger.Hemisphere can freely rotate in spheric seating, so just, can eliminate the error of perpendicularity that crosshead and plunger join and hold, and then can guarantee the automatic centering of plunger and guide sleeve to make plunger place guide sleeve and filler central position, effectively eliminate plunger contacts end face with crosshead the error of perpendicularity.Prevent to misalign, produce eccentric wear, heating, reduce pump efficiency, shorten the working life of plunger (piston rod), guide sleeve and filler.
The beneficial effects of the utility model mainly show: 1, plunger and crosshead are good to neutrality, and eccentric wear, reliability height take place when effectively avoiding the work of plunger and filler; Generate heat when 2, reducing work, improve pump efficiency; 3, prolong the working life of plunger, guide sleeve and filler; 4, the aperture of hold-down ring is bigger than plunger diameter, eliminates hold-down ring and contacts the error of perpendicularity that causes with plunger and the interference that produces, and helps crosshead and plunger Chinese style is connected; 5, hold-down ring is threaded with the plunger for crosshead chamber, and assembly technology is simple.
(4) description of drawings
Fig. 1 is the crosshead of reciprocating pump of prior art and the coupling mechanism schematic representation of plunger.
Fig. 2 is the structural drawing of reciprocating pump of the present utility model with plunger automatic centering mechanism.
(5) embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 2, a kind of reciprocating pump plunger automatic centering mechanism, comprise the crosshead (1), the plunger (7) that are connected with reciprocating drive mechanism, described plunger (7) one ends are installed in the plunger cavity (11) of crosshead (1) by fastening piece, plunger (7) the other end passes filler (8), guide sleeve (10), and filler (8) and guide sleeve (10) are installed in the stuffing box (9); Plunger (7) end is connected by the sphere sliding assembly with crosshead (1); The sphere sliding assembly is made up of spheric seating (2), hemisphere (3), and described spheric seating (2) is installed in the bottom of plunger cavity (11), and hemisphere (3) is positioned at the sphere of spheric seating (2), and hemisphere (3) is fixedlyed connected with plunger (7) end.
Fastening piece comprise the middle part that is installed on plunger cavity (11) snap ring (4) and pad (5), be installed on the hold-down ring (6) of plunger cavity (11) outer end, plunger cavity (11) inwall is provided with internal thread, described hold-down ring (6) is socketed on the inwall of plunger cavity (11), and described snap ring (4), pad (5), hold-down ring (6) closely are connected with plunger (7).The aperture of hold-down ring (6) is bigger than plunger (7) diameter.
The reciprocating pump of present embodiment plunger (piston rod) automatic centering mechanism, mechanism mainly is made up of crosshead (1), spheric seating (2), hemisphere (3), snap ring (4), pad (5), hold-down ring (6), plunger (piston rod) (7), filler (8), stuffing box (9), guide sleeve (10) etc.
Described spheric seating (2) matches with the hemisphere face of hemisphere (3), places between the plunger cavity (11) and plunger (piston rod) (7) of crosshead (1); Described plunger (piston rod) (7) one ends join in the planar end surface of hemisphere (3), and by hold-down ring (6), pad (5) and snap ring (4) plunger (piston rod) (7) and crosshead (1) are joined together; Described plunger (piston rod) (7) can to-and-fro motion in guide sleeve (10) and filler (8).
Described crosshead (1) is reciprocating under the driving of reciprocator, when crosshead (1) when moving right, promotes plunger (piston rod) (7) by spheric seating (2), hemisphere (3) and moves right; When crosshead (1) during to left movement, by pulling plungers (piston rod) (7) such as hold-down ring (6), snap rings (4) to left movement.
Claims (5)
1, a kind of reciprocating pump plunger automatic centering mechanism, comprise the crosshead, the plunger that are connected with reciprocating drive mechanism, described plunger one end is installed in the plunger cavity of crosshead by fastening piece, the described plunger the other end passes filler, guide sleeve, and described filler and guide sleeve are installed in the stuffing box; It is characterized in that:
Described plunger end is connected by the sphere sliding assembly with described crosshead;
Described sphere sliding assembly is made up of spheric seating, hemisphere, and described spheric seating is installed in the bottom of described plunger cavity, and described hemisphere is positioned at the sphere of spheric seating, and described hemisphere is fixedlyed connected with plunger end.
2, reciprocating pump as claimed in claim 1 plunger automatic centering mechanism, it is characterized in that: described fastening piece comprise the middle part that is installed on the plunger for crosshead chamber snap ring and pad, be installed on the hold-down ring of plunger cavity outer end, described snap ring, pad, hold-down ring closely are connected with plunger.
3, reciprocating pump as claimed in claim 2 plunger automatic centering mechanism, it is characterized in that: described plunger cavity inwall is provided with the internal thread that matches with hold-down ring, and described hold-down ring is socketed on the inwall of plunger cavity.
4, as claim 2 or 3 described reciprocating pump plunger automatic centering mechanisms, it is characterized in that: the aperture of described hold-down ring is bigger than plunger diameter
5, reciprocating pump as claimed in claim 4 is with plunger automatic centering mechanism, and it is characterized in that: described reciprocating pump is a horizontal type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520102598 CN2793369Y (en) | 2005-06-01 | 2005-06-01 | Automatic ram-type centering mechanism of reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520102598 CN2793369Y (en) | 2005-06-01 | 2005-06-01 | Automatic ram-type centering mechanism of reciprocating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2793369Y true CN2793369Y (en) | 2006-07-05 |
Family
ID=36820514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520102598 Expired - Lifetime CN2793369Y (en) | 2005-06-01 | 2005-06-01 | Automatic ram-type centering mechanism of reciprocating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2793369Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414104C (en) * | 2005-06-01 | 2008-08-27 | 浙江工业大学 | Automatic stop centering mechanism in use for reciprocating pump |
| CN105804961A (en) * | 2016-03-15 | 2016-07-27 | 北京星达科技发展有限公司 | Plunger pump transmission mechanism, high-pressure constant flow pump system and medium flow control method |
| CN106224226A (en) * | 2016-08-30 | 2016-12-14 | 宁波合力机泵股份有限公司 | A kind of plungers pump plunger regulation of mental activities structure |
-
2005
- 2005-06-01 CN CN 200520102598 patent/CN2793369Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414104C (en) * | 2005-06-01 | 2008-08-27 | 浙江工业大学 | Automatic stop centering mechanism in use for reciprocating pump |
| CN105804961A (en) * | 2016-03-15 | 2016-07-27 | 北京星达科技发展有限公司 | Plunger pump transmission mechanism, high-pressure constant flow pump system and medium flow control method |
| CN106224226A (en) * | 2016-08-30 | 2016-12-14 | 宁波合力机泵股份有限公司 | A kind of plungers pump plunger regulation of mental activities structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080827 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |