CN1789715A - Leakless device for plunger pump - Google Patents
Leakless device for plunger pump Download PDFInfo
- Publication number
- CN1789715A CN1789715A CN 200510062191 CN200510062191A CN1789715A CN 1789715 A CN1789715 A CN 1789715A CN 200510062191 CN200510062191 CN 200510062191 CN 200510062191 A CN200510062191 A CN 200510062191A CN 1789715 A CN1789715 A CN 1789715A
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- CN
- China
- Prior art keywords
- ring
- bellows
- leakless
- plunger pump
- bonnet
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- 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.)
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Abstract
This invention relates to one new column pump device without leakage, which comprises front cover, back cover connected to cylinder, wherein, the column passes front cover; there is sealed ring between connection bar and back cover; the connection bar and column are connected at flange cover; the flange cover is connected to front cover and back cover; the connection bar has outside ring, inside pressure ring; the thin wall spring wave tube front end is connected with outside ring and inside ring; the wave tube, inside ring, back cover form second sealed chamber and the wave tube, flange cover and front cover form first sealed chamber.
Description
(1) technical field
The present invention relates to a kind of plunger pump leakage preventer.
(2) background technique
Plunger pump is the positive displacement reciprocating pump, and it is to rely on reciprocating plunger in the fluid cylinder, and the size of periodically-varied volume by inlet/outlet valve group, thereby reaches the purpose that sucks and discharge medium.At present, both at home and abroad the plunger pump of producing mainly adopts packing seal, but medium still can ooze out from plunger body and packing seal gap location, has leakage problem, is perplexing world's pump already always.And the leakage of fed sheet of a media, possible befouling environment causes problems such as security incident.Therefore, solve the great technical barrier that plunger pump dielectric leakage problem becomes world's pump industry.
(3) summary of the invention
For there is leakage problem in the leakage protection device that overcomes existing plunger pump, seal incomplete deficiency, the invention provides a kind of leak free plunger pump leakage protection device.
Technological scheme of the present invention is:
A kind of novel Leakless device for plunger pump, comprise the protecgulum, the bonnet that are connected with cylinder body, plunger body passes protecgulum, between connecting rod and the bonnet seal ring is arranged, connecting rod and plunger body interconnect in the flange cover, the flange cover connects protecgulum and bonnet, outer press ring, inner pressure ring are arranged on the connecting rod; the front end of the bellows that the thin-walled elastic material is made is connected between outer press ring, the inner pressure ring; form second airtight chamber between bellows, inner pressure ring, the bonnet, form first airtight chamber between bellows, flange cover, the protecgulum.
The tube wall of described bellows is provided with bearing ring outward, is provided with supporting ring in the tube wall.
All be provided with the steel wire ring in the described Leakless device in bearing ring and the supporting ring, bear inside and outside pressure to strengthen it.
The beneficial effect of Leakless device for plunger pump of the present invention mainly shows: 1, the medium-tight that will ooze out in the fluid cylinder is in first sealed chamber, and medium can't leak, and has realized that the nothing of plunger pump is leaked operation; 2, be provided with second sealed chamber, when medium was too much in first sealed chamber, when sucking, the medium in first sealed chamber then can be got back in the pump chamber automatically, realized the automatic recovery of fluid cylinder medium.
(4) description of drawings
Fig. 1 is traditional plunger pump gland sealed structural representation.
Fig. 2 is the structural representation of Leakless device for plunger pump of the present invention.
(5) embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Referring to accompanying drawing: a kind of novel Leakless device for plunger pump, comprise the protecgulum 15 that is connected with cylinder body, bonnet 8, plunger body 2 passes protecgulum, between connecting rod 10 and the bonnet 8 seal ring is arranged, connecting rod 10 interconnects in flange cover 1 with plunger body 2, flange cover 1 connects protecgulum 15 and bonnet 8, outer press ring 3 is arranged on the connecting rod 10, inner pressure ring 4; front end of the bellows 5 that the thin-walled elastic material is made is connected outer press ring 3; between the inner pressure ring 4; bellows 5; inner pressure ring 4; form second airtight chamber, bellows 5 between the bonnet 8; flange cover 1; form first airtight chamber between the protecgulum 15.
The tube wall of described bellows 5 is provided with bearing ring 6 outward, is provided with supporting ring 7 in the tube wall.
All be provided with the steel wire ring in bearing ring 6 and the supporting ring 7 in the described Leakless device, bear inside and outside pressure to strengthen it.
The motor driving connecting rod reaches and the plunger that is connected, and produces to-and-fro motion, by inlet/outlet valve group, inhales, discharges medium.When inhaling journey, outlet valve 13 cuts out, and coupling rod 10 is to the motion of power end direction, and when scheduling, inlet valve 11 cuts out, and coupling rod 10 is to the direction motion of fluid end, and bellows 5 is stretched.
The medium-tight that to ooze out in the fluid cylinder is in first sealed chamber, second airtight chamber is filled media separately, because bellows adopts the thin-walled elastic material to make, during the plunger to-and-fro motion, leaking medium collected in first sealed chamber is in a single day too much, when inhaling journey, first sealed chamber's hydrodynamic pressure rises, medium in first sealed chamber then can be got back in the pump chamber automatically, to guarantee airtight cavity volume pressure within the specific limits, prevents because of the too high damage bellows of cavity pressure.
The bellows inner ring is provided with bearing ring, the outer ring is provided with supporting ring, and be synchronized with the movement with bellows, make bellows suffered power in to-and-fro motion transfer to inside and outside supporting ring, improve its force-bearing situation, just when first sealed chamber's fluid pressure during greater than the second airtight chamber fluid pressure, supporting ring plays the effect of supporting bellows external pressure; When first sealed chamber's fluid pressure during less than the second airtight chamber fluid pressure, bearing ring plays the effect of pressing in the bellows of bearing.
All be provided with the steel wire ring in bearing ring and the supporting ring,, reduce its thickness, improve its fatigue strength, increase the service life in order to improving the stressed of bellows.
Claims (3)
1, a kind of novel Leakless device for plunger pump, it is characterized in that: comprise the protecgulum, the bonnet that are connected with cylinder body, plunger body passes protecgulum, between connecting rod and the bonnet seal ring is arranged, connecting rod and plunger body interconnect in the flange cover, the flange cover connects protecgulum and bonnet, outer press ring, inner pressure ring are arranged on the connecting rod; the front end of the bellows that the thin-walled elastic material is made is connected between outer press ring, the inner pressure ring; form second airtight chamber between bellows, inner pressure ring, the bonnet, form first airtight chamber between bellows, flange cover, the protecgulum.
2, plunger pump as claimed in claim 1 is with interior circulation Leakless device, and it is characterized in that: the tube wall of described bellows is provided with bearing ring outward, is provided with supporting ring in the tube wall.
3, Leakless device for plunger pump as claimed in claim 2 is characterized in that: all be provided with the steel wire ring in the described Leakless device in bearing ring and the supporting ring, bear inside and outside pressure to strengthen it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510062191 CN1789715A (en) | 2005-12-23 | 2005-12-23 | Leakless device for plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510062191 CN1789715A (en) | 2005-12-23 | 2005-12-23 | Leakless device for plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1789715A true CN1789715A (en) | 2006-06-21 |
Family
ID=36787789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510062191 Pending CN1789715A (en) | 2005-12-23 | 2005-12-23 | Leakless device for plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1789715A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101096945B (en) * | 2006-06-30 | 2010-12-08 | 商庆元 | Drinking machine electric self-sucking pump |
| CN102562567A (en) * | 2012-01-20 | 2012-07-11 | 哈尔滨工业大学 | Device for measuring leakage of barrel and plunger assembly in plunger pump |
| CN114576158A (en) * | 2022-03-29 | 2022-06-03 | 四川宝石机械专用车有限公司 | Differential pressure type fracturing pump plunger sealing device |
-
2005
- 2005-12-23 CN CN 200510062191 patent/CN1789715A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101096945B (en) * | 2006-06-30 | 2010-12-08 | 商庆元 | Drinking machine electric self-sucking pump |
| CN102562567A (en) * | 2012-01-20 | 2012-07-11 | 哈尔滨工业大学 | Device for measuring leakage of barrel and plunger assembly in plunger pump |
| CN114576158A (en) * | 2022-03-29 | 2022-06-03 | 四川宝石机械专用车有限公司 | Differential pressure type fracturing pump plunger sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |