CN202811316U - Automatic correcting seal ring of liquid chromatograph infusion pump - Google Patents
Automatic correcting seal ring of liquid chromatograph infusion pump Download PDFInfo
- Publication number
- CN202811316U CN202811316U CN 201220366840 CN201220366840U CN202811316U CN 202811316 U CN202811316 U CN 202811316U CN 201220366840 CN201220366840 CN 201220366840 CN 201220366840 U CN201220366840 U CN 201220366840U CN 202811316 U CN202811316 U CN 202811316U
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- CN
- China
- Prior art keywords
- seal ring
- plunger rod
- pump
- infusion pump
- correcting
- 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 discloses an automatic correcting seal ring of a liquid chromatograph infusion pump. The automatic correcting seal ring of the liquid chromatograph infusion pump is less prone to wear during reciprocation of the infusion pump. In order to solve the problem, the technical scheme includes that the automatic correcting seal ring comprises a pump body and a cam, a plunger rod sliding sleeve, a spring, a cleaning gasket, an outlet one-way valve, a pump head, a seal ring body, a plunger rod and a spring housing which are arranged in the pump body. The automatic correcting seal ring is characterized in that the seal ring body is of a floating structure, a floating chamber is mainly composed of an upper concave cover and a lower convex cover, a seal matched with the floating chamber in shape is arranged in the same, and a coaxial mounting hole matched with the plunger rod in shape is arranged at the center of each of the upper concave cover, the lower convex cover and the seal. The seal ring body is of the floating structure, the floating chamber is mainly composed of the upper concave cover and the lower convex cover, the lower convex cover directly contacts with the plane of a pump head pool to achieve a peripheral sealing effect, and the seal is capable of freely moving in the floating chamber bilaterally and vertically, so that automatic correction is achieved to enable the seal ring and a plunger to move concentrically.
Description
Technical field
The utility model relates to a kind of infusion pump of liquid chromatograph.
Background technique
Seal ring in the liquid chromatograph infusion pump is one of core component of infusion pump, and it is installed on pump head, plays the effect of sealing pump chamber mesohigh mobile phase.Existing liquid chromatograph infusion pump great majority adopt floating type piston structure, and its seal ring is general firm on cavity, owing to be subjected to the restriction of the aspects such as its structure and process conditions, are difficult between the seal ring of front and back keep with one heart.Like this, infusion pump is in the back and forth wearing and tearing that very easily cause seal ring in service, thus the generation phenomenon of leakage.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of infusion pump at the self-correcting seal ring of reciprocal seal ring in service liquid chromatograph infusion pump not easy to wear.
For addressing the above problem, the technical solution adopted in the utility model comprises the pump main body, and be arranged on cam, plunger rod sliding sleeve, spring, cleaning sealing gasket, outlet one-way valve, pump head, seal ring, plunger rod, spring housing in the pump main body, it is characterized in that: described seal ring is floating structure, mainly form float chamber by spill loam cake and convex lower cover, sealing that adapts with its shape is set in float chamber, and the center of described spill loam cake, convex lower cover, sealing arranges the coaxial mounting hole that adapts with the plunger rod shape.
Described self-correcting seal ring is characterized in that: in the described pump main body, a cleaning chamber is set on the plunger rod namely, and described self-correcting seal ring, the rear end is installed and is cleaned sealing gasket and sealing gasket.
Described self-correcting seal ring is characterized in that: described seal ring is made by the PEEK material.
Described self-correcting seal ring is characterized in that: described cleaning sealing gasket is also used the seal ring of floating structure.
Self-correcting seal ring of the present utility model, it forms the sub-float chamber of sealing by spill loam cake, convex lower cover, direct and the pump head pond plane contact of convex lower cover, the effect of sealing around can reaching, sealing can height unrestricted motion about in the float chamber, realize automatic calibration, to reach the effect with the plunger concentric motion.Thereby eliminated infusion pump in the back and forth wearing and tearing to seal ring in service, eliminated the phenomenon of leakage, the long seal ring in court of a feudal ruler working life; Simultaneously, the pump seal of raising makes pump can reach anti-ultrahigh pressure (10000PSI) technique effect; In addition; the utility model has added a cleaning chamber that can have water to flow through in the centre of plunger rod; a pair of floating sealing circle has been installed in the chamber; water during pump operation in the plunger rod operation meeting automatic cycle chamber; constantly flow by water; just can take away the salt solution that infilters, prevent separating out of salt grain, protect plunger rod and plunger sealing washer.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is ring structure schematic representation of the present utility model.
Fig. 3 is the sectional drawing of spill loam cake.
Fig. 4 is the worm's eye view of spill loam cake.
Fig. 5 is the sectional drawing of convex lower cover.
Fig. 6 is the worm's eye view of convex lower cover.
Fig. 7 is the structural representation of cleaning chamber.
Embodiment
Extremely shown in Figure 7 such as Fig. 1, liquid chromatograph infusion pump of the present utility model comprises pump main body 14, and be located at cam 1 in the pump main body 14, plunger rod sliding sleeve 2, spring 3, clean sealing gasket 4, outlet one-way valve 6) pump head 7, seal ring 8, plunger rod 10, spring housing 11, described seal ring 8 is floating structure, mainly form float chamber 13 by spill loam cake 8-1 and convex lower cover 8-2, the sub-8-3 of sealing that adapts with its shape is set, at spill loam cake 8-1 in float chamber, convex lower cover 8-2, the center that seals sub-8-3 arranges the coaxial mounting hole 12 that adapts with the plunger rod shape.
Sub-8-3 is all cylindrical for spill loam cake 8-1 described in the utility model, convex lower cover 8-2, sealing.And made by the PEEK material.
In the pump main body 14 of the present utility model, a cleaning chamber 5 is set on the plunger rod 10 namely, cleaning chamber 5 front ends are installed seal ring 8, and the rear end is installed and cleaned sealing gasket 4 and sealing gasket 9.Cleaning sealing gasket 4 also can adopt the seal ring 8 of floating structure to replace.
The above only is preferred embodiment of the present utility model, not in order to limiting the utility model, all any modifications of doing within spirit of the present utility model and principle, is equal to and replaces and improvement etc., all is included within the protection domain of the present utility model.
Claims (5)
1. the self-correcting seal ring of a liquid chromatograph infusion pump, comprise pump main body (14), and be arranged on cam (1) in the pump main body (14), plunger rod sliding sleeve (2), spring (3), clean sealing gasket (4), outlet one-way valve (6), pump head (7), seal ring (8), plunger rod (10), spring housing (11), it is characterized in that: described seal ring (8) is floating structure, mainly form float chamber (13) by spill loam cake (8-1) and convex lower cover (8-2), sealing (8-3) that adapts with its shape is set, described spill loam cake (8-1) in float chamber, convex lower cover (8-2), the center of sealing (8-3) arranges the coaxial mounting hole (12) that adapts with the plunger rod shape.
2. self-correcting seal ring according to claim 1, it is characterized in that: in the described pump main body (14), be that a cleaning chamber (5) is set on the plunger rod (10), described cleaning chamber (5) front end is installed seal ring (8), and the rear end is installed and cleaned sealing gasket (4) and sealing gasket (9).
3. self-correcting seal ring according to claim 1 is characterized in that: spill loam cake (8-1), convex lower cover (8-2), sealing (8-3) are all cylindrical.
4. self-correcting seal ring according to claim 1, it is characterized in that: described seal ring (8) is made by the PEEK material.
5. self-correcting seal ring according to claim 2, it is characterized in that: described cleaning sealing gasket (4) is also used the seal ring (8) of floating structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366840 CN202811316U (en) | 2012-07-27 | 2012-07-27 | Automatic correcting seal ring of liquid chromatograph infusion pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366840 CN202811316U (en) | 2012-07-27 | 2012-07-27 | Automatic correcting seal ring of liquid chromatograph infusion pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811316U true CN202811316U (en) | 2013-03-20 |
Family
ID=47870199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220366840 Expired - Lifetime CN202811316U (en) | 2012-07-27 | 2012-07-27 | Automatic correcting seal ring of liquid chromatograph infusion pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811316U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065223A (en) * | 2015-08-05 | 2015-11-18 | 浙江福立分析仪器有限公司 | High-pressure plunger infusion pump and aligning method thereof |
| CN111336078A (en) * | 2020-03-03 | 2020-06-26 | 大连依利特分析仪器有限公司 | Double-plunger liquid chromatography infusion pump, pump regulation and control method and pump system |
-
2012
- 2012-07-27 CN CN 201220366840 patent/CN202811316U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065223A (en) * | 2015-08-05 | 2015-11-18 | 浙江福立分析仪器有限公司 | High-pressure plunger infusion pump and aligning method thereof |
| CN111336078A (en) * | 2020-03-03 | 2020-06-26 | 大连依利特分析仪器有限公司 | Double-plunger liquid chromatography infusion pump, pump regulation and control method and pump system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |