CN202083678U - High-pressure constant-current pump ripple damper with full-peak contact surface - Google Patents
High-pressure constant-current pump ripple damper with full-peak contact surface Download PDFInfo
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- CN202083678U CN202083678U CN2011201327775U CN201120132777U CN202083678U CN 202083678 U CN202083678 U CN 202083678U CN 2011201327775 U CN2011201327775 U CN 2011201327775U CN 201120132777 U CN201120132777 U CN 201120132777U CN 202083678 U CN202083678 U CN 202083678U
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- loam cake
- ripple damper
- base
- pump
- damper
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Abstract
The utility model relates to a ripple damper, in particular to a high-pressure constant-current pump ripple damper. The ripple damper is characterized by comprising a base, an upper cover, and an external reinforcing member, wherein, an inner chamber is arranged in the base; the upper cover is connected with the upper end of the base so as to seal the inner chamber; the external reinforcing member is arranged on the upper cover and connected with the upper cover and the base; and a liquid input port and a liquid output port are formed on the upper cover. Due to the ripple damper provided by the utility model, the pulsation of a pump is reduced to 0.1MPa within a 1-2mL/min flow range, the noise of a detector, which is caused by pump pulsation, is greatly reduced, the detection precision is improved, and the ripple damper has good practical application value.
Description
Technical field
The utility model relates to a kind of ripple damper, specifically is a kind of high voltage and constant current ripple damper that is used for liquid chromatograph chromatogram pump liquid-way system.
Background technology
Liquid chromatograph is used for the fluid sample component concentration is carried out analysis to measure, and liquid chromatography pump is one of important composition parts of liquid chromatograph, stability, repeatability and the precision of the direct impact analysis of liquid chromatography pump performance.Along with liquid-phase chromatographic analysis in actual applications popularize and analyze the raising that requires, also more and more higher to performance demands such as the transfusion precision of liquid chromatography pump, pulsation.Liquid chromatography pump commonly used at present comprises that pneumatic amplification pump, reciprocating pump, spiral syringe pump, membrane pump etc. are several, and wherein, mechanical reciprocating pump is widely used in the liquid chromatography instrument with advantages such as its stable performance, flow regulation and solvent replacement convenience.The machinery reciprocating pump can be divided into reciprocating plunger pump and reciprocating diaphragm pump two classes, and wherein reciprocating plunger pump can be worked under elevated pressures, and solvent replacement is convenient, and its application is relatively more general, but has the problem of pulsation.For further reducing pulse, general ram pump also needs to adopt ripple damper or real-time pressure feedback system etc.
Liquid chromatograph mainly comprises online becket damper, compressed fluid damper, resonant cavity type damper and adjustable spring damper with ripple damper in the prior art.The common principle of all dampers all is the elastic performance that utilizes different objects different, elastomeric objects is compressed with stored energy when system pressure is big, when system pressure hour elastomeric objects discharges the energy of storage again, reach the purpose that reduces the system pressure fluctuation with this.Mainly there are problems such as complex structure, manufacturing cost height, poor reliability in above-mentioned damper commonly known in the art.
The utility model has overcome the above-mentioned defective of ripple damper in the prior art, has proposed a kind of high voltage and constant current ripple damper.Ripple damper of the present utility model can expand to the liquid flow face of full PEEK material, with the supporting use of full PEEK pump, can make the pulsation of pump in the working range of 1-2mL/min flow, be reduced to 0.1MPa, greatly reduce the noise that detecting device causes owing to pump surging, thereby improved accuracy of detection.
The utility model content
The utility model proposes a kind of high pressure constant flow pump ripple damper, it is characterized in that, comprising:
Base is provided with inner chamber in the described base;
Loam cake, described loam cake is connected with described base upper end, seals described inner chamber;
Externally reinforced, described externally reinforced is arranged on above the described loam cake, is connected with described loam cake and described base;
Described loam cake is provided with liquid inlet and liquid outlet.
In the high pressure constant flow pump ripple damper of the present utility model, described externally reinforced is connected by screw with described loam cake, and described externally reinforced is connected with described base through screws.
In the high pressure constant flow pump ripple damper of the present utility model, be provided with film between the inner chamber of described loam cake and described base;
Be provided with the cavity that flows for liquid between described loam cake and the described film;
Described loam cake and described film adopt the hold-down ring structure that described cavity is sealed;
Described liquid inlet is connected with described cavity respectively with liquid outlet;
Hold organic solvent in the inner chamber of described base.
In the high pressure constant flow pump ripple damper of the present utility model, described externally reinforced is adopted stainless steel material to make, and described loam cake adopts stainless steel material or PEEK material to make, and described film adopts the PEEK material to make.
In the utility model high voltage and constant current ripple damper, described PEEK material is a kind of high performance engineering plastics, and formal name used at school is a polyetheretherketone.
The utility model purpose is to propose the high high voltage and constant current ripple damper of a kind of performance, when adopting the PEEK loam cake, its maximum working pressure (MOP) reaches more than the 20MPa, when adopting stainless steel upper cover, maximum working pressure (MOP) can reach more than the 40MPa, in pump discharge is under the 1mL/min situation, and the input pressure pulsation is under the situation of 1MPa, and output pressure is pulsed about 0.1MPa.
Description of drawings
Fig. 1 is the overall schematic of the utility model high voltage and constant current ripple damper.
Fig. 2 is the structural representation of the utility model high voltage and constant current ripple damper.
1 expression loam cake among the figure, 2 expression loam cakes, 3 expression bases, 4 expression films, 5 expression hold-down rings, 6 expression organic solvents, 7 expression screws, 8 express liquid input ports, 9 express liquid delivery outlets, 10 expression screws.
Fig. 3 is the enlarged diagram of hold-down ring 5 among Fig. 2.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described, following examples only are used for the technical solution of the utility model more clearly is described, and do not limit protection domain of the present utility model with this.
Embodiment 1
Be the high pressure constant flow pump ripple damper of full PEEK surface of contact of the present utility model as shown in Figure 1 and Figure 2, comprise:
Externally reinforced 1, loam cake 2 and base 3;
Wherein, be provided with inner chamber in the base 3; Loam cake 2 is connected closed inner chamber with base 3 upper ends; Be arranged on for externally reinforced 1 above the loam cake 2, be connected with loam cake 2 and base 3;
In the high pressure constant flow pump ripple damper of present embodiment, externally reinforced 1 is connected by screw 10 with loam cake 2, and externally reinforced 1 also is connected by screw 7 with base 3;
Be provided with film 4 between the inner chamber of loam cake 2 and base 3;
Be provided with the cavity that flows for liquid between loam cake 2 and the film 4;
Liquid inlet 8 is connected with cavity respectively with liquid outlet 9;
Hold organic solvent 6 in the inner chamber of base 3;
Adopt for externally reinforced 1 stainless steel material to make, loam cake 2 and film 4 adopt the PEEK material to make.
The high pressure constant flow pump ripple damper of full PEEK surface of contact of the present utility model adopts stainless steel material or PEEK material as the damper loam cake, do externally reinforced with stainless steel material, adopt the PEEK film to make the weakening film simultaneously, organic solvent is used as compressible elastomeric, and adopts the hold-down ring structure assurance PEEK loam cake of particular design and the sealing of PEEK film.
The utility model provides a kind of ripple damper that is suitable for full PEEK pump, can make the pulsation of pump be reduced to 0.1MPa in the working range of 1～2mL/min flow, and this greatly reduces detecting device because the noise that pump surging causes has improved accuracy of detection.
Claims (8)
1. a high pressure constant flow pump ripple damper is characterized in that, comprising:
Base is provided with inner chamber in the described base;
Loam cake, described loam cake is connected with described base upper end, seals described inner chamber;
Externally reinforced, described externally reinforced is arranged on above the described loam cake, is connected with described loam cake and described base;
Described loam cake is provided with liquid inlet and liquid outlet.
2. ripple damper as claimed in claim 1 is characterized in that, described externally reinforced is connected by screw with described loam cake, and described externally reinforced is connected with described base through screws.
3. ripple damper as claimed in claim 1 is characterized in that, is provided with film between the inner chamber of described loam cake and described base.
4. ripple damper as claimed in claim 3 is characterized in that, is provided with the cavity that flows for liquid between described loam cake and the described film.
5. ripple damper as claimed in claim 4 is characterized in that, described loam cake and described film adopt the hold-down ring structure that described cavity is sealed.
6. ripple damper as claimed in claim 4 is characterized in that, described liquid inlet is connected with described cavity respectively with liquid outlet.
7. ripple damper as claimed in claim 1 is characterized in that, holds organic solvent in the inner chamber of described base.
8. ripple damper as claimed in claim 1 is characterized in that, described externally reinforced is adopted stainless steel material to make, and described loam cake adopts stainless steel material or PEEK material to make, and described film adopts the PEEK material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201327775U CN202083678U (en) | 2011-04-29 | 2011-04-29 | High-pressure constant-current pump ripple damper with full-peak contact surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201327775U CN202083678U (en) | 2011-04-29 | 2011-04-29 | High-pressure constant-current pump ripple damper with full-peak contact surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202083678U true CN202083678U (en) | 2011-12-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201327775U Expired - Lifetime CN202083678U (en) | 2011-04-29 | 2011-04-29 | High-pressure constant-current pump ripple damper with full-peak contact surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202083678U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044272A (en) * | 2015-06-26 | 2015-11-11 | 山东省计量科学研究院 | Device and method for quickly measuring ion chromatography voltage endurance capability |
| CN108827828A (en) * | 2018-06-27 | 2018-11-16 | 燕山大学 | A kind of two-stage type damping plug flow behavior test system and its test method |
| CN110425102A (en) * | 2019-08-06 | 2019-11-08 | 大连依利特分析仪器有限公司 | A kind of adjustable infusion pump surging damper |
-
2011
- 2011-04-29 CN CN2011201327775U patent/CN202083678U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044272A (en) * | 2015-06-26 | 2015-11-11 | 山东省计量科学研究院 | Device and method for quickly measuring ion chromatography voltage endurance capability |
| CN108827828A (en) * | 2018-06-27 | 2018-11-16 | 燕山大学 | A kind of two-stage type damping plug flow behavior test system and its test method |
| CN108827828B (en) * | 2018-06-27 | 2019-11-01 | 燕山大学 | A kind of two-stage type damping plug flow behavior test system and its test method |
| CN110425102A (en) * | 2019-08-06 | 2019-11-08 | 大连依利特分析仪器有限公司 | A kind of adjustable infusion pump surging damper |
| CN110425102B (en) * | 2019-08-06 | 2020-12-22 | 大连依利特分析仪器有限公司 | Adjustable infusion pump pulsation damper |
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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 |
Granted publication date: 20111221 |
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| CX01 | Expiry of patent term |