CN209557227U - A kind of sealing structure of plunger pump - Google Patents
A kind of sealing structure of plunger pump Download PDFInfo
- Publication number
- CN209557227U CN209557227U CN201920352197.3U CN201920352197U CN209557227U CN 209557227 U CN209557227 U CN 209557227U CN 201920352197 U CN201920352197 U CN 201920352197U CN 209557227 U CN209557227 U CN 209557227U
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- sealing
- end cap
- hole
- plunger pump
- pump housing
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Abstract
The utility model discloses a kind of sealing structures of plunger pump, the pump housing including plunger pump, the transmission shaft for being pierced by the pump housing is provided in the pump housing, the pump housing is provided with the sealing hole being overlapped with drive shaft axis, sealing hole bottom is circular conical surface, sealing hole bottom, which is provided with, is sheathed on transmission shaft and section as the sealing ring of wedge shape, transmission shaft is equipped with the end cap being sheathed in sealing hole, compressed spring is provided between end cap and sealing ring, end cap end is provided with the first connecting plate that the annular of threaded hole is evenly distributed in along end cap axis, the second connecting plate for being equipped with fastening bolt is arranged in the pump housing, the screw thread of fastening bolt is matched with the screw thread of the first connecting plate threaded hole；The utility model is compensated when salable ring is worn, long service life.
Description
Technical field
The utility model belongs to pump technical field, more particularly to a kind of sealing structure of plunger pump.
Background technique
Plunger pump moves back and forth in cylinder body by plunger, so that the volume of seal operation cavity is changed to realize and inhale
Liquid, hydraulic fluid, be widely used the occasion for needing to adjust with high pressure, big flow and flow.
Plunger pump is generally divided into single plunger pump, horizontal plunger pump, axial plunger pump and radial plunger pump.Wherein axial plunger
Pump is to move back and forth the volume that lock generates in plunger hole using the plunger parallel with transmission shaft to change the transmission to work
Sealing ring is provided between axis and the pump housing, general sealing structure is sealed using sealing ring, since transmission shaft rotates, sealing
Circle abrasion is very fast, and the service life is lower, and plunger pump is caused to have oil leakage phenomenon.
Utility model content
For above-mentioned purpose, the utility model proposes a kind of sealing structures of plunger pump, have well solved sealing ring
Quick abrasion leads to the problem of plunger pump oil leak.
To achieve the goals above, the technical solution adopted in the utility model is as follows: a kind of sealing structure of plunger pump, packet
The pump housing of plunger pump is included, the transmission shaft for being pierced by the pump housing is provided in the pump housing, further includes being set in the pump housing and and drive shaft axis
The sealing hole of coincidence, sealing hole bottom are circular conical surface, and sealing hole bottom, which is provided with, is sheathed on transmission shaft and section as the close of wedge shape
Seal ring, the transmission shaft are equipped with the end cap being sheathed in sealing hole, and compressed spring is provided between end cap and sealing ring, end
Lid end is provided with the first connecting plate that the annular of threaded hole is evenly distributed in along end cap axis, and pump housing setting is equipped with fastening spiral shell
Second connecting plate of bolt, the screw thread of fastening bolt are matched with the screw thread of the first connecting plate threaded hole.
It further, further include the spring mounting hole that opens up of end face of end cap close to sealing ring, compressed spring is set to
In spring mounting hole.
Further, the spring mounting hole and compressed spring are along end cap axis circumference uniform distribution 3.
Further, the outer ring surface of the sealing ring and inner ring surface are provided with annular groove, set respectively in 2 annular grooves
It is equipped with the first sealing ring and the second sealing ring.
Further, the sealing ring uses polytetrafluoroethylene material.
Further, the end of the fastening bolt is provided with nut.
Compared with prior art, the utility model has the following beneficial effects:
1, cooperate between the circular conical surface of sealing hole bottom and the sealing ring of wedge shape, and realize under the action of compressed spring close
Envelope, when a small amount of abrasion occurs for sealing ring, compressed spring can compensate automatically, when seal wears amount is larger, can rely on
Fastening bolt makes end cap compress compressed spring, increases sealing ring decrement, reaches sealing effect, long service life.
2, the outer ring surface of sealing ring and inner ring surface are provided with sealing ring and packing ring combination reaches dual-seal, mutually
Compensation, sealing effect is more preferably.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the partial enlarged view I of Fig. 1.
In figure: 1, transmission shaft；2, the pump housing, the 3, first sealing ring；4, the second sealing ring；5, sealing ring；6, compressed spring；7,
Spring mounting hole；8, end cap；9, fastening bolt；10, nut；11, the first connecting plate；12, sealing hole；13, the second connecting plate；
14, annular groove.
Specific embodiment
As Figure 1-Figure 2, the sealing structure of a kind of plunger pump described in the utility model, the pump housing 2 including plunger pump,
It is provided with the transmission shaft 1 for being pierced by the pump housing 2 in the pump housing 2, further includes being opened in the sealing being overlapped in the pump housing 2 and with 1 axis of transmission shaft
Hole 12,12 bottom of sealing hole are circular conical surface, and 12 bottom of sealing hole, which is provided with, is sheathed on transmission shaft 1 and section as the sealing ring of wedge shape
5, the transmission shaft 1 is equipped with end cap 8, and end cap 8 is also sheathed in sealing hole 12, and end cap 8 and transmission shaft 1 and sealing hole 12 are
For clearance fit；Compressed spring 6 is provided between end cap 8 and sealing ring 12,8 end of end cap is provided with along 8 circumference of end cap
It is evenly equipped with the first connecting plate 11 of the annular of threaded hole, the first connecting plate 11 is integrally machined molding with end cap 8；The pump housing 2 is provided with
Second connecting plate 13 is provided with through-hole on second connecting plate 13, and through-hole, which is set, is equipped with fastening bolt 9, the screw thread of fastening bolt 9 and
The screw thread of one connecting plate, 11 threaded hole matches, and the end of fastening bolt 9 is provided with nut 10, prevents fastening bolt 9 from loosening.
The spring mounting hole 7 opened up close to the end face of the end cap 8 of sealing ring 5, compressed spring 6 are placed in spring mounting hole 7
Interior, spring mounting hole 7 plays the role of the guiding of compressed spring 6, reduces the amplitude for the vibration of compressed spring 6 occur；Spring mounting hole 7
It is 3 uniformly distributed along 8 circumference of end cap with compressed spring 6, make 5 uniform force of sealing ring.
The outer ring surface and inner ring surface of sealing ring 5 are provided in 14,2 annular grooves 14 of annular groove and are mounted with that first is close respectively
Seal 3 and the combination of the second sealing ring 4 and sealing ring 5 reach dual-seal, mutually compensate, sealing effect is more preferably；Sealing ring 5 is adopted
With polytetrafluoroethylene material, there is good wearability and self-lubrication, and can be sealed.
When using the utility model, the first sealing ring 3 and the second sealing ring 5 are first mounted on the annular groove on sealing ring 5
In 14, then sealing ring 5 is packed into sealing hole 12, then compressed spring 6 is placed in spring mounting hole 7, finally end cap 8
It is mounted in sealing hole 12, is fastened with fastening bolt 9, and cover top nut 10；Compressed spring 6 can be with automatic compensation sealing ring 5
A small amount of abrasion can make end cap 8 compress compressed spring 6 by fastening bolt 9, make sealing ring when 5 abrasion loss of sealing ring is larger
5 decrements increase, and reach sealing effect, long service life.
Claims (6)
1. a kind of sealing structure of plunger pump, the pump housing (2) including plunger pump, the pump housing (2) is interior to be provided with the biography for being pierced by the pump housing (2)
Moving axis (1), it is characterised in that: it further include being set to the sealing hole (12) being overlapped in the pump housing (2) and with transmission shaft (1) axis, it is close
Sealing of hole (12) bottom is circular conical surface, and sealing hole (12) bottom, which is provided with, is sheathed on transmission shaft (1) and section as the sealing ring of wedge shape
(5), the transmission shaft (1) is equipped with the end cap (8) being sheathed in sealing hole (12), sets between end cap (8) and sealing ring (5)
It is equipped with compressed spring (6), end cap (8) end is provided with the first company that the annular of threaded hole is evenly equipped with along end cap (8) circumference
The second connecting plate (13) for being equipped with fastening bolt (9), the screw thread and first of fastening bolt (9) is arranged in fishplate bar (11), the pump housing (2)
The screw thread of connecting plate (11) threaded hole matches.
2. a kind of sealing structure of plunger pump according to claim 1, it is characterised in that: further include close to sealing ring (5)
End cap (8) the spring mounting hole (7) that opens up of end face, compressed spring (6) is set in spring mounting hole (7).
3. a kind of sealing structure of plunger pump according to claim 2, it is characterised in that: the spring mounting hole (7)
It is 3 uniformly distributed along end cap (8) circumference with compressed spring (6).
4. a kind of sealing structure of plunger pump according to claim 1, it is characterised in that: outside the sealing ring (5)
Anchor ring and inner ring surface are provided with annular groove (14), and the first sealing ring (3) and second close is respectively arranged in 2 annular grooves (14)
Seal (4).
5. a kind of sealing structure of plunger pump according to claim 1-4, it is characterised in that: the sealing ring
(5) polytetrafluoroethylene material is used.
6. a kind of sealing structure of plunger pump according to claim 1, it is characterised in that: the fastening bolt (9)
End is provided with nut (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920352197.3U CN209557227U (en) | 2019-03-19 | 2019-03-19 | A kind of sealing structure of plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920352197.3U CN209557227U (en) | 2019-03-19 | 2019-03-19 | A kind of sealing structure of plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209557227U true CN209557227U (en) | 2019-10-29 |
Family
ID=68311300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920352197.3U Active CN209557227U (en) | 2019-03-19 | 2019-03-19 | A kind of sealing structure of plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209557227U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111283940A (en) * | 2020-04-29 | 2020-06-16 | 湖南精正设备制造有限公司 | Automatic end cover locking mechanism capable of being unlocked forcibly |
| CN112411073A (en) * | 2020-10-22 | 2021-02-26 | 邵阳市昌兴实业有限公司 | Fiber soaking equipment for textile processing |
| CN114165407A (en) * | 2021-11-03 | 2022-03-11 | 余世亮 | Sealing device for plunger pump and plunger pump thereof |
-
2019
- 2019-03-19 CN CN201920352197.3U patent/CN209557227U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111283940A (en) * | 2020-04-29 | 2020-06-16 | 湖南精正设备制造有限公司 | Automatic end cover locking mechanism capable of being unlocked forcibly |
| CN112411073A (en) * | 2020-10-22 | 2021-02-26 | 邵阳市昌兴实业有限公司 | Fiber soaking equipment for textile processing |
| CN112411073B (en) * | 2020-10-22 | 2023-05-12 | 东莞市伟耀纺织有限公司 | Fiber soaking equipment for textile processing |
| CN114165407A (en) * | 2021-11-03 | 2022-03-11 | 余世亮 | Sealing device for plunger pump and plunger pump thereof |
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