CN103591011B - A kind of structure improved liquid phase plunger pump - Google Patents
A kind of structure improved liquid phase plunger pump Download PDFInfo
- Publication number
- CN103591011B CN103591011B CN201310548738.7A CN201310548738A CN103591011B CN 103591011 B CN103591011 B CN 103591011B CN 201310548738 A CN201310548738 A CN 201310548738A CN 103591011 B CN103591011 B CN 103591011B
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- dirt
- plunger rod
- proof boot
- low pressure
- pressing plate
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Abstract
The invention discloses a kind of structure improved liquid phase plunger pump, comprise high-pressure chamber, low pressure volumes, inner chamber accent is provided with on rear side of low pressure volumes, also include plunger rod, dirt-proof boot, pressing plate is fixed with on uncovered on rear side of dirt-proof boot, spring is provided with in dirt-proof boot, dirt-proof boot integral installation to fit on plunger rod and is arranged on accent place on rear side of low pressure volumes, plunger rod front end penetrates height, in low pressure volumes inner chamber, plunger rod rear end to be stretched out and affixed with a push rod from pressing plate, plunger rod shaft is provided with land, in land, cover has support ring, before support ring, anchor ring is pressed on spring, pressing plate to be pressed on after support ring on anchor ring.The present invention can avoid dust, foreign matter falls into plunger rod working surface, reduce the inordinate wear that in plunger rod and high and low pressure cavity, high and low pressure seal ring produces, do not need high coaxality requirement between plunger rod and push rod in the present invention simultaneously, difficulty of processing and cost can be reduced like this.
Description
Technical field
The present invention relates to liquid phase plunger pump field, be specially a kind of structure improved liquid phase plunger pump.
Background technique
Liquid phase plunger pump is one of conventional pump structure, and as shown in Figure 2, the high and low pressure cavity connected by face is formed the liquid phase plunger pump of prior art, and plunger rod front end is stretched in the inner chamber that high and low pressure cavity communicates, and the other end is exposed to outer and affixed with a push rod.Its plunger rod of liquid phase plunger pump of this structure exposes without dust-proof, safeguard structure, and plunger rod assembling is changed inconvenient, and the requirement on machining accuracy of pump is high.
Summary of the invention
The object of this invention is to provide a kind of structure improved liquid phase plunger pump, to solve prior art Problems existing.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of structure improved liquid phase plunger pump, it is characterized in that: comprise face and connect for overall high-pressure chamber, low pressure volumes, high, there is in low pressure volumes the inner chamber communicated with each other, and on rear side of low pressure volumes, be provided with inner chamber accent, also include plunger rod, dirt-proof boot, be set to uncovered on rear side of described dirt-proof boot, and uncovered on be fixed with pressing plate, spring is provided with in dirt-proof boot, spring one end is connected on front side of dirt-proof boot, described dirt-proof boot integral installation to fit on plunger rod and is arranged on accent place on rear side of low pressure volumes, plunger rod front end is stretched out and is penetrated height on front side of dirt-proof boot, in low pressure volumes inner chamber, and on front side of plunger rod and dirt-proof boot between be slidably matched, plunger rod rear end to be stretched out and affixed with a push rod from pressing plate, and be slidably matched between plunger rod and pressing plate, the shaft that plunger rod is positioned at dirt-proof boot is provided with land, in land, cover has the support ring affixed with land, before described support ring, anchor ring is pressed on dirt-proof boot inner spring the other end end face, described pressing plate to be pressed on after support ring on anchor ring.
The structure improved liquid phase plunger pump of described one, is characterized in that: be connected with positioning table on front side of described dirt-proof boot, and on front side of dirt-proof boot, positioning table to be positioned on rear side of low pressure volumes in accent.
The structure improved liquid phase plunger pump of described one, is characterized in that: described plunger rod is also provided with outer land from the shaft that pressing plate stretches out, and the ring wall of outer land forms annular groove.
The present invention is exposed to the shaft outside high and low pressure cavity by dirt-proof boot guard column stopper rod; dust can be avoided, foreign matter falls into plunger rod working surface; reduce the inordinate wear that in plunger rod and high and low pressure cavity, high and low pressure seal ring produces, while also can the accidental damage that produces because of External Force Acting of protection post stopper rod.Do not need high coaxality requirement between plunger rod and push rod in the present invention, difficulty of processing and cost can be reduced like this.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is prior art liquid phase plunger pump structure schematic diagram.
Embodiment
As shown in Figure 1.A kind of structure improved liquid phase plunger pump, comprising face connects for overall high-pressure chamber, low pressure volumes 1, 2, high, low pressure volumes 1, there is in 2 the inner chamber communicated with each other, and be provided with inner chamber accent on rear side of low pressure volumes 2, also include plunger rod 3, dirt-proof boot 6, be set to uncovered on rear side of dirt-proof boot 6, and uncovered on be fixed with pressing plate 7, spring 5 is provided with in dirt-proof boot 6, spring 5 one end is connected on front side of dirt-proof boot 6, dirt-proof boot 6 integral installation to fit on plunger rod 3 and is arranged on accent place on rear side of low pressure volumes 2, plunger rod 3 front end is stretched out and is penetrated height on front side of dirt-proof boot 6, low pressure volumes 1, in 2 inner chambers, and on front side of plunger rod 3 and dirt-proof boot 6 between be slidably matched, plunger rod 3 rear end to be stretched out and affixed with a push rod 4 from pressing plate 7, and be slidably matched between plunger rod 3 and pressing plate 7, the shaft that plunger rod 3 is positioned at dirt-proof boot 6 is provided with land 9, in land 9, cover has the support ring 8 affixed with land 9, before support ring 8, anchor ring is pressed on dirt-proof boot 6 inner spring 5 the other end end face, pressing plate 7 is pressed on the rear anchor ring of support ring 8.
Be connected with positioning table 10 on front side of dirt-proof boot 6, on front side of dirt-proof boot 6, positioning table 10 to be positioned on rear side of low pressure volumes 2 in accent.
Plunger rod 3 is also provided with outer land from the shaft that pressing plate 7 stretches out, the ring wall of outer land forms annular groove 11.
The present invention installs dirt-proof boot in spring outside, dirt-proof boot front end is compressed by spring one end, and is close on rear side of low pressure volumes, assembles pressing plate and compress on rear side of dirt-proof boot, can avoid dust like this, foreign matter falls into plunger rod working surface, reduce the inordinate wear that plunger rod and high and low pressure seal ring produce; Simultaneously also can the accidental damage that produces because of External Force Acting of protection post stopper rod.
In the present invention, support ring internal diameter coordinates to make support ring to be enclosed within land and fastening with land with land on plunger rod, before support ring, anchor ring is pressed on spring the other end end face, when push rod drives plunger rod to move in high and low pressure cavity, plunger rod, by support ring Compress Spring, compresses output liquid simultaneously in high-pressure chamber; When the power being added in plunger rod right-hand member removes, plunger rod, under the pressure acting in conjunction in the restoring force and high-pressure chamber of spring, replys initial position.In the present invention, push rod and plunger rod do not need high coaxality requirement, can reduce difficulty of processing and cost like this.In being got from pump head by plunger rod, then only need take off pump head complete machine, axially pull and support the tail end annular groove of plunger rod, just plunger rod can being taken out from pump head, without the need to disassembling other part of pump head.
Claims (1)
1. a structure improved liquid phase plunger pump, it is characterized in that: comprise face and connect for overall high-pressure chamber, low pressure volumes, high, there is in low pressure volumes the inner chamber communicated with each other, and on rear side of low pressure volumes, be provided with inner chamber accent, also include plunger rod, dirt-proof boot, be set to uncovered on rear side of described dirt-proof boot, and uncovered on be fixed with pressing plate, spring is provided with in dirt-proof boot, spring one end is connected on front side of dirt-proof boot, described dirt-proof boot integral installation to fit on plunger rod and is arranged on accent place on rear side of low pressure volumes, plunger rod front end is stretched out and is penetrated height on front side of dirt-proof boot, in low pressure volumes inner chamber, and on front side of plunger rod and dirt-proof boot between be slidably matched, plunger rod rear end to be stretched out and affixed with a push rod from pressing plate, and be slidably matched between plunger rod and pressing plate, the shaft that plunger rod is positioned at dirt-proof boot is provided with land, in land, cover has the support ring affixed with land, before described support ring, anchor ring is pressed on dirt-proof boot inner spring the other end end face, described pressing plate to be pressed on after support ring on anchor ring,
Be connected with positioning table on front side of described dirt-proof boot, on front side of dirt-proof boot, positioning table to be positioned on rear side of low pressure volumes in accent;
Described plunger rod is also provided with outer land from the shaft that pressing plate stretches out, and the ring wall of outer land forms annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310548738.7A CN103591011B (en) | 2013-11-06 | 2013-11-06 | A kind of structure improved liquid phase plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310548738.7A CN103591011B (en) | 2013-11-06 | 2013-11-06 | A kind of structure improved liquid phase plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103591011A CN103591011A (en) | 2014-02-19 |
| CN103591011B true CN103591011B (en) | 2016-03-30 |
Family
ID=50081287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310548738.7A Active CN103591011B (en) | 2013-11-06 | 2013-11-06 | A kind of structure improved liquid phase plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103591011B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69721924T2 (en) * | 1996-09-30 | 2003-12-24 | Shimadzu Corp | liquid pump |
| CN200975321Y (en) * | 2006-11-22 | 2007-11-14 | 北京普析科学仪器有限责任公司 | Plunger piston structural in liquid phase chromatography high pressure infusion pump |
| CN201209547Y (en) * | 2008-06-14 | 2009-03-18 | 吴建化 | Plunger pump |
| CN102094777A (en) * | 2011-01-27 | 2011-06-15 | 北京清博华科技有限公司 | Plunger pump for preparing liquid chromatographic column |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07197880A (en) * | 1993-12-29 | 1995-08-01 | Shimadzu Corp | Plunger type liquid supply pump |
-
2013
- 2013-11-06 CN CN201310548738.7A patent/CN103591011B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69721924T2 (en) * | 1996-09-30 | 2003-12-24 | Shimadzu Corp | liquid pump |
| CN200975321Y (en) * | 2006-11-22 | 2007-11-14 | 北京普析科学仪器有限责任公司 | Plunger piston structural in liquid phase chromatography high pressure infusion pump |
| CN201209547Y (en) * | 2008-06-14 | 2009-03-18 | 吴建化 | Plunger pump |
| CN102094777A (en) * | 2011-01-27 | 2011-06-15 | 北京清博华科技有限公司 | Plunger pump for preparing liquid chromatographic column |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103591011A (en) | 2014-02-19 |
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