CN202165264U - Emptying valve with overflow function - Google Patents
Emptying valve with overflow function Download PDFInfo
- Publication number
- CN202165264U CN202165264U CN2011202300110U CN201120230011U CN202165264U CN 202165264 U CN202165264 U CN 202165264U CN 2011202300110 U CN2011202300110 U CN 2011202300110U CN 201120230011 U CN201120230011 U CN 201120230011U CN 202165264 U CN202165264 U CN 202165264U
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- valve
- outlet
- atmospheric
- emptying
- overflow
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Abstract
The utility model discloses an emptying valve with overflow function. The emptying valve comprises an emptying valve body, a liquid pipeline arranged on the valve body, and inlets, an outlet and a waste liquid discharge port of the valve, wherein the emptying valve body is internally provided with an overflow valve; the convergence of the inlets A and B of the emptying valve is communicated with the inlet of the overflow valve; the outlet of the overflow valve is communicated with the outlet E (the waste liquid discharge port) of the emptying valve; the overflow valve comprises a valve seat provided with a liquid inlet and a liquid outlet, and a sealing needle, a spring and a spring adjusting screw sequentially connected on the valve block; and the end of the spring adjusting screw extends out of the emptying valve body, and is provided with a spare fastening nut. As the function of the overflow valve is integrated into the emptying valve, the design of the overflow valve is simplified, pipeline connection is reduced, pre-column volume is decreased, and peak time is shortened, thus saving the use of flow phase. Meanwhile, the collection of waste liquid is simplified, and the production and use costs are notably reduced.
Description
Technical field
The utility model relates to hydraulic equipment, is specifically related to be used for the high pressure constant flow pump of preparative high performance liquid chromatography appearance, more specifically relates to being used to the atmospheric valve of protecting the pump transfusion system not damage because of pressure is excessive.
Background technique
In the preparative high performance liquid chromatography instrument system; The stability of pump directly has influence on the life-span of whole system; One of them causes that very easily the situation that pump damages is exactly: when pump is provided with big flow; Pressure increases even causes moment superpressure significantly rapidly, and the superpressure warning function on the circuit can not in time react, and very easily causes transfusion system fault even damage.In order to address this problem, the mode that extensively adopts at present has two kinds:
The one, pump is taked the mode that slowly starts: be exactly when big flow is set; Flow is slowly risen to by the present flow rate value flow is set; Its benefit is; When the actual pressure of pump was about to be higher than setting pressure, the superpressure warning function on the circuit had time enough to make pump out of service, thereby played the purpose of protection transfusion system.
The 2nd, increase independent relief valve device: be exactly at independent relief valve device of transfusion system internal series-connection; Its feature is: relief valve itself is provided with a critical pressure, and when pressure during less than critical pressure, relief valve is not worked; When pressure during greater than critical pressure; Relief valve is worked, and plays the effect of release pressure, and the superpressure warning function on the circuit quits work pump simultaneously.
Top dual mode can both play the effect of protection transfusion system, and this dual mode also often joins together to use, but shortcoming also is clearly, has promptly increased the relief valve device, makes assembly process complicated, has also increased cost.Simultaneously, the waste liquid that relief valve is discharged also needs independent pipeline to connect away, is not easy to management.
Summary of the invention
The technical problem that the utility model will solve provides a kind of carry potential overflow function atmospheric valve, can not only play the better protect effect to the pump in the transfusion system, and simple in structure, fabricating cost is low.
The utility model is realized through following technological scheme:
Carry potential overflow function atmospheric valve; Comprise the atmospheric valve valve body; Be arranged at liquid line and import and export thereof, the waste liquid exhaust port of valve body; Be provided with relief valve in the said atmospheric valve valve body, the A inlet of atmospheric valve, B inlet intersection are communicated with the inlet opening of relief valve, and the outlet of relief valve is communicated with the E of atmospheric valve outlet (waste liquid exhaust port).
The further improvement project of the utility model is, said relief valve comprises the valve seat that is provided with liquid entrance, is connected in needle seal, spring, the spring adjusting screw rod of valve seat successively, and the atmospheric valve valve body is stretched out in said spring adjusting screw rod end, which is provided with to be equipped with tight nut.
The utility model further improvement project is that the outlet of relief valve is communicated with the E outlet of atmospheric valve or with the waste liquid exhaust port of atmospheric valve through the valve seat of atmospheric valve.
The utility model compared with prior art has following obvious advantage:
One, the utility model is provided with relief valve in the valve body of atmospheric valve; Atmospheric valve A enters the mouth, B enters the mouth intersection because the inlet opening of relief valve is communicated in; The outlet of relief valve and the E of atmospheric valve outlet or be communicated with the waste liquid exhaust port, therefore, when the pressure of transfusion system during less than critical pressure; Relief valve is not worked, and only plays the effect of atmospheric valve; When the pressure of transfusion system during greater than critical pressure, relief valve work, the pressure of transfusion system is released, and a part of liquid is discharged through the relief valve outlet.
Two, the utility model is integrated into the function of relief valve on the emptying valve body; Simplified the design of relief valve; Thereby reduced the pipeline connection, reduced the post front volume, shortened the use that appearance time has reduced mobile phase; Simultaneously, simplify the collection work of waste liquid, greatly reduced cost of production and user cost.
Three, the atmospheric valve of carry potential overflow function is applicable to the transfusion system of 5 ~ 60MPa, can effectively protect the safe handling of transfusion system.
Description of drawings
Fig. 1 is the utility model schematic perspective view.
Embodiment
As shown in Figure 1, the utility model comprises atmospheric valve valve body 1, is arranged at liquid line and import and export thereof, the waste liquid exhaust port of valve body 1.Be provided with relief valve in the said atmospheric valve valve body 1, the A of atmospheric valve inlet 7, B 8 intersections that enter the mouth are communicated with the inlet opening of relief valve, and the valve seat 9 that atmospheric valve is passed through in the outlet of relief valve and the E of atmospheric valve export 10 or be communicated with the waste liquid exhaust port 11 of atmospheric valve.
Still as shown in Figure 1, said relief valve comprises the valve seat 12 that is provided with liquid entrance, is connected in needle seal 2, spring 3, the spring adjusting screw rod 5 of valve seat 12 successively, and atmospheric valve valve body 1 is stretched out in said spring adjusting screw rod 5 ends, which is provided with to be equipped with tight nut 4.
The utility model working procedure:
1) liquid flows into atmospheric valve, and mixes through A, B inlet;
2) mixed liquid one end flows out through C outlet 13, and the other end is as the pressure input end of relief valve;
3) when mixed fluid pressure during greater than the relief valve critical pressure, relief valve is opened, and discharges a part of pressure, and a part of liquid flows out through relief valve, and the liquid of outflow is discharged through the atmospheric valve valve seat and from waste liquid mouth 11;
4) when mixed fluid pressure during less than the relief valve critical pressure; Relief valve cuts out, and all liq flows out through C outlet 13, and the liquid of outflow flow back into the emptying valve body through D mouth 14; When the atmospheric valve handle was closed, liquid all flow into the next stage stream through E mouth 10; When the atmospheric valve handle was opened, liquid all flowed out through waste liquid mouth 11.
Claims (3)
1. carry potential overflow function atmospheric valve; Comprise the atmospheric valve valve body; Be arranged at liquid line and import and export thereof, the waste liquid exhaust port of valve body; It is characterized in that: be provided with relief valve in the atmospheric valve valve body, the A inlet of atmospheric valve, B inlet intersection are communicated with the inlet opening of relief valve, and the outlet of relief valve is communicated with the E of atmospheric valve outlet or with the waste liquid exhaust port.
2. carry potential overflow function atmospheric valve as claimed in claim 1; It is characterized in that: said relief valve comprises the valve seat that is provided with liquid entrance; Be connected in needle seal, spring, the spring adjusting screw rod of valve seat successively, the atmospheric valve valve body is stretched out in said spring adjusting screw rod end, which is provided with to be equipped with tight nut.
3. carry potential overflow function atmospheric valve as claimed in claim 1 is characterized in that: the outlet of relief valve is communicated with the E outlet of atmospheric valve or with the waste liquid exhaust port of atmospheric valve through the valve seat of atmospheric valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202300110U CN202165264U (en) | 2011-07-01 | 2011-07-01 | Emptying valve with overflow function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202300110U CN202165264U (en) | 2011-07-01 | 2011-07-01 | Emptying valve with overflow function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165264U true CN202165264U (en) | 2012-03-14 |
Family
ID=45801093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202300110U Expired - Fee Related CN202165264U (en) | 2011-07-01 | 2011-07-01 | Emptying valve with overflow function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165264U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758731A (en) * | 2014-01-08 | 2014-04-30 | 奉化意格特机械制造有限公司 | Air compressor emptying valve |
| CN109209857A (en) * | 2018-10-31 | 2019-01-15 | 大连依利特分析仪器有限公司 | Infusion pump in parallel integrated form linker |
-
2011
- 2011-07-01 CN CN2011202300110U patent/CN202165264U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758731A (en) * | 2014-01-08 | 2014-04-30 | 奉化意格特机械制造有限公司 | Air compressor emptying valve |
| CN109209857A (en) * | 2018-10-31 | 2019-01-15 | 大连依利特分析仪器有限公司 | Infusion pump in parallel integrated form linker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20170701 |