JPS61166176U - - Google Patents
Info
- Publication number
- JPS61166176U JPS61166176U JP4947485U JP4947485U JPS61166176U JP S61166176 U JPS61166176 U JP S61166176U JP 4947485 U JP4947485 U JP 4947485U JP 4947485 U JP4947485 U JP 4947485U JP S61166176 U JPS61166176 U JP S61166176U
- Authority
- JP
- Japan
- Prior art keywords
- time
- pump
- discharge
- liquid
- feeding device
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims 6
- 238000000034 method Methods 0.000 claims 2
- 238000004811 liquid chromatography Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Description
第１図はこの考案の実施例のブロツク図、第２
図および第３図はポンプの断面図、第４図および
第５図はそれぞれのタイムチヤートである。
各図中、同一符号は同一または相当部分を示し
、Ｐ，Ｐ１，Ｐ２はポンプ、１はポンプ室、２は
プランジヤ、３は吸入弁、４は吐出弁、５，６は
圧力計、７は差圧計測部、８は遅れ時間計測部、
９は演算部、１０は入力部、１１はモータドライ
バ、１３は駆動部である。
Figure 1 is a block diagram of an embodiment of this invention;
3 and 3 are sectional views of the pump, and FIGS. 4 and 5 are respective time charts. In each figure, the same reference numerals indicate the same or equivalent parts, P, P 1 and P 2 are pumps, 1 is a pump chamber, 2 is a plunger, 3 is a suction valve, 4 is a discharge valve, 5 and 6 are pressure gauges, 7 is a differential pressure measuring section, 8 is a delay time measuring section,
9 is a calculation section, 10 is an input section, 11 is a motor driver, and 13 is a drive section.
Claims (1)
を通して液を吸入し吐出弁を通して吐出するポン
プと、ポンプ室内圧および吐出側圧の差圧を計測
する手段と、上記差圧からポンプの遅れ時間を計
測する手段と、上記遅れ時間の吐出量減少を補正
するように次サイクルの時間を演算する手段と、
演算結果によりポンプの駆動部を制御する手段と
を備えた液体クロマトグラフ用送液装置。 (2) ポンプの遅れ時間が、吸入工程に入つてか
ら吐出弁が閉じるまでの時間Ｔ１および吐出工程
に入つてからポンプ室内圧と吐出側圧が等しくな
るまでの時間Ｔ２である実用新案登録請求の範囲
第１項記載の液体クロマトグラフ用送液装置。 (3) 次サイクルの時間の演算が１サイクルの時
間の設定値をＴ０とし、前回の１サイクルの実時
間をＭｎ−１Ｔ０としたとき、｛１−２（Ｔ１＋
Ｔ２）Ｍｎ−１Ｔ０｝×Ｔ０を演算するものであ
る実用新案登録請求の範囲第１項または第２項記
載の液体クロマトグラフ用送液装置。[Scope of Claim for Utility Model Registration] (1) A pump whose plunger moves back and forth in a pump chamber to suck in liquid through a suction valve and discharge it through a discharge valve, a means for measuring the differential pressure between the pump chamber pressure and the discharge side pressure, and the above-mentioned pump. means for measuring the delay time of the pump from the differential pressure; and means for calculating the time of the next cycle so as to correct the decrease in discharge amount due to the delay time;
A liquid feeding device for a liquid chromatograph, comprising means for controlling a pump drive unit based on calculation results. (2) Utility model registration where the delay time of the pump is T1, the time from entering the suction process until the discharge valve closes, and T2 , the time from entering the discharge process until the pump chamber pressure and the discharge side pressure become equal. A liquid feeding device for liquid chromatography according to claim 1. (3) When calculating the time of the next cycle, let T 0 be the set value of the time for 1 cycle, and let M n-1 T 0 be the actual time of the previous 1 cycle, then {1-2(T 1 +
The liquid feeding device for a liquid chromatograph according to claim 1 or 2, which calculates T 2 )M n-1 T 0 }×T 0 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4947485U JPH0326306Y2 (en) | 1985-04-03 | 1985-04-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4947485U JPH0326306Y2 (en) | 1985-04-03 | 1985-04-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61166176U true JPS61166176U (en) | 1986-10-15 |
| JPH0326306Y2 JPH0326306Y2 (en) | 1991-06-06 |
Family
ID=30566711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4947485U Expired JPH0326306Y2 (en) | 1985-04-03 | 1985-04-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0326306Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63105285A (en) * | 1986-10-22 | 1988-05-10 | Hitachi Ltd | Low pulsating flow pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6952636B2 (en) | 2018-03-28 | 2021-10-20 | 日機装株式会社 | Control method of pulsation-free pump and pulsation-free pump |
-
1985
- 1985-04-03 JP JP4947485U patent/JPH0326306Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63105285A (en) * | 1986-10-22 | 1988-05-10 | Hitachi Ltd | Low pulsating flow pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0326306Y2 (en) | 1991-06-06 |
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