CN211648441U - Plunger sealing element for high-pressure constant-flow pump of liquid chromatograph - Google Patents
Plunger sealing element for high-pressure constant-flow pump of liquid chromatograph Download PDFInfo
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- CN211648441U CN211648441U CN201922207624.1U CN201922207624U CN211648441U CN 211648441 U CN211648441 U CN 211648441U CN 201922207624 U CN201922207624 U CN 201922207624U CN 211648441 U CN211648441 U CN 211648441U
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Abstract
The utility model relates to a part for the oil pump, concretely relates to plunger sealing member for liquid chromatograph high pressure constant current pump, be equipped with the piston chamber in the pump cylinder body part, pump piston part is mobilizable to be installed in the piston chamber, it can to dispose on the pump piston part the activity in the piston chamber piston rod seal part, the pump head seat sets up one side of pump cylinder body part, the pump head seat with be equipped with pump head seal part between the pump cylinder body part. In the device of the utility model, a piston rod sealing part which can move in a piston cavity is arranged on a pump piston part, and the diameter of the piston rod sealing part is the same as that of the piston cavity, thereby ensuring the sealing function; the pump head sealing component is arranged between the pump head seat and the pump cylinder body component, the concave arc-shaped groove is arranged on the surface of the pump head sealing component matched with the pump head seat, the convex arc-shaped bulge is arranged on the pump head seat, and the groove is matched with the bulge, so that the sealing effect is further ensured.
Description
Technical Field
The utility model relates to a part for oil pump, concretely relates to plunger sealing member for liquid chromatograph high pressure constant current pump.
Background
The high-pressure constant flow pump of the liquid chromatograph is one of the most important components in the liquid chromatograph, the high-pressure constant flow pump comprises a pump head, a plunger sealing component, a pump head seat, a pump piston component and rollers, the pump piston component comprises a plunger rod and a piston rod, the plunger sealing component is an integral rubber component and is provided with a through hole matched with the piston pump, the plunger sealing component is arranged in the pump head cavity and is pressed and sealed by a screw on the end face of the pump head after being connected with the pump head seat, and the structure has the advantages that the plunger sealing component is tensioned in the pump head cavity and is difficult to detach when needing to be replaced, operation is carried out by a professional, and the.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the background art, the utility model provides a plunger sealing member for liquid chromatograph high pressure constant current pump.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a plunger seal for a high-pressure constant-flow pump of a liquid chromatograph comprises a pump piston component, a pump cylinder body component, a pump head seat, a piston rod seal component and a pump head seal component; be equipped with the piston chamber in the pump cylinder body part, pump piston part movably installs in the piston chamber, the last configuration of pump piston part can be in the piston chamber activity piston rod seal part, the pump head seat sets up one side of pump cylinder body part, the pump head seat with be equipped with pump head seal part between the pump cylinder body part.
Preferably, the piston rod sealing part is cylindrical, the piston cavity is cylindrical, and the diameter of the piston rod sealing part is the same as that of the piston cavity.
Preferably, the pump head seal part is circular, and the cover is established on the piston rod seal part, the pump head seal part with be equipped with on the pump head seat assorted and be concave arc form recess, be equipped with on the pump head seat and be convex arc's arch, the recess with protruding phase-match.
Preferably, a baffle plate is arranged on the pump cylinder body part, and the baffle plate is sleeved on the pump piston part.
Preferably, an extension spring is sleeved on the pump piston component, one end of the extension spring is connected to the baffle, and the other end of the extension spring is connected to the pump piston component.
Preferably, the piston rod sealing member is made of a rubber elastic material, and the pump head sealing member is made of a rubber elastic material.
The utility model discloses owing to adopted above-mentioned technical scheme, following beneficial effect has:
the utility model adopts a plunger sealing element for a high-pressure constant-current pump of a liquid chromatograph, in the device of the utility model, a piston rod sealing part which can move in a piston cavity is arranged on a pump piston part, and the diameter of the piston rod sealing part is the same as that of the piston cavity, thereby ensuring the sealing function; the pump head sealing component is arranged between the pump head seat and the pump cylinder body component, the concave arc-shaped groove is arranged on the surface of the pump head sealing component matched with the pump head seat, the convex arc-shaped bulge is arranged on the pump head seat, and the groove is matched with the bulge, so that the sealing effect is further ensured.
Drawings
FIG. 1 is a schematic structural diagram of the device of the present invention;
FIG. 2 is a schematic structural view of a sealing member of a pump head in the apparatus of the present invention;
FIG. 3 is a schematic cross-sectional view A-A of FIG. 2;
in the figure: 1. a pump piston member; 2. a pump cylinder block component; 3. a pump head base; 31. a protrusion; 4. a piston rod sealing member; 5. a pump head seal component; 51. a groove; 6. a piston cavity; 7. a baffle plate; 8. a tension spring.
Detailed Description
The following describes preferred embodiments of the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1, the plunger seal for the high-pressure constant-current pump of the liquid chromatograph is mainly made of cast iron and comprises a pump piston component 1, a pump cylinder component 2, a pump head base 3, a piston rod seal component 4 and a pump head seal component 5. The pump cylinder body part 2 is cylindrical, be equipped with cylindric piston chamber 6 in the pump cylinder body part 2, cylindric pump piston part 1 movably installs in the piston chamber 6, it can to dispose on the pump piston part 1 the piston rod seal part 4 that moves about in the piston chamber 6, the diameter of piston rod seal part 4 with the diameter in piston chamber 6 is the same to guarantee sealed effect. The piston rod sealing part 4 is made of rubber elastic material, and the inner wall of the piston cavity 6 is smooth so as to ensure that the piston rod sealing part 4 can move forwards under the action of the pump piston part 1. The pump head seat 3 is arranged on one side of the pump cylinder body component 2, and a pump head sealing component 5 is arranged between the pump head seat 3 and the pump cylinder body component 2, so that the sealing effect is further ensured. And a baffle 7 is arranged on the pump cylinder body part 2, and the baffle 7 is sleeved on the pump piston part 1. An extension spring 8 is sleeved on the pump piston component 1, one end of the extension spring 8 is connected to the baffle 7, and the other end of the extension spring is connected to the pump piston component 1. When the pump piston member 1 is elongated, the extension spring 8 is also elongated, and the original state can be quickly restored by the restoring force of the extension spring 8.
As shown in fig. 2 to 3, the pump head sealing member 4 is circular, made of rubber elastic material, and sleeved on the piston rod sealing member 1, the pump head sealing member 5 and the pump head seat 3 are provided with concave arc-shaped grooves 51 on the matched surface, the pump head seat 3 is provided with convex arc-shaped protrusions 31, and the grooves 51 are matched with the protrusions 31. The design can guarantee that pump head seal part 5 closely laminates on pump head seat 3, great improvement sealed effect.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The plunger seal for the high-pressure constant-flow pump of the liquid chromatograph is characterized by comprising a pump piston component, a pump cylinder component, a pump head seat, a piston rod seal component and a pump head seal component; be equipped with the piston chamber in the pump cylinder body part, pump piston part movably installs in the piston chamber, the last configuration of pump piston part can be in the piston chamber activity piston rod seal part, the pump head seat sets up one side of pump cylinder body part, the pump head seat with be equipped with pump head seal part between the pump cylinder body part.
2. The plunger seal for a high-pressure constant-current pump of a liquid chromatograph according to claim 1, wherein the piston rod sealing member is cylindrical, the piston cavity is cylindrical, and the diameter of the piston rod sealing member is the same as the diameter of the piston cavity.
3. The plunger seal for a high-pressure constant-current pump of a liquid chromatograph according to claim 1, wherein the pump head sealing member is circular and is sleeved on the piston rod sealing member, a concave arc-shaped groove is formed in a surface of the pump head sealing member, which is matched with the pump head base, a convex arc-shaped protrusion is formed on the pump head base, and the groove is matched with the protrusion.
4. The plunger seal for a high-pressure constant-flow pump of a liquid chromatograph according to claim 1, wherein a baffle is arranged on the pump cylinder body component, and the baffle is sleeved on the pump piston component.
5. The plunger seal for a high-pressure constant-current pump of a liquid chromatograph according to claim 4, wherein an extension spring is sleeved on the pump piston component, one end of the extension spring is connected to the baffle, and the other end of the extension spring is connected to the pump piston component.
6. The plunger seal for a high-pressure constant-current pump of a liquid chromatograph according to claim 1, wherein the piston rod sealing member is made of a rubber elastic material, and the pump head sealing member is made of a rubber elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922207624.1U CN211648441U (en) | 2019-12-10 | 2019-12-10 | Plunger sealing element for high-pressure constant-flow pump of liquid chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922207624.1U CN211648441U (en) | 2019-12-10 | 2019-12-10 | Plunger sealing element for high-pressure constant-flow pump of liquid chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211648441U true CN211648441U (en) | 2020-10-09 |
Family
ID=72695468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922207624.1U Active CN211648441U (en) | 2019-12-10 | 2019-12-10 | Plunger sealing element for high-pressure constant-flow pump of liquid chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211648441U (en) |
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2019
- 2019-12-10 CN CN201922207624.1U patent/CN211648441U/en active Active
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