JPH0735768U - Pulseless hydraulic pump - Google Patents

Pulseless hydraulic pump

Info

Publication number
JPH0735768U
JPH0735768U JP7109093U JP7109093U JPH0735768U JP H0735768 U JPH0735768 U JP H0735768U JP 7109093 U JP7109093 U JP 7109093U JP 7109093 U JP7109093 U JP 7109093U JP H0735768 U JPH0735768 U JP H0735768U
Authority
JP
Japan
Prior art keywords
cylindrical plunger
feed screw
hydraulic pump
liquid
pulsation
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.)
Pending
Application number
JP7109093U
Other languages
Japanese (ja)
Inventor
隆之 君島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP7109093U priority Critical patent/JPH0735768U/en
Publication of JPH0735768U publication Critical patent/JPH0735768U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】 【目的】化学分析で用いられる液体クロマトグラフの液
体加圧式溶離液吐出装置における液体圧力発生装置に関
するものであり、精密な流量コントロールができ、脈流
のない高圧の吐出油圧を得る無脈流油圧ポンプに関する
ものである。 【構成】円筒型プランジャー(1)の内面にメネジ
(2)を設け、送りネジ(3)を挿入する。送りネジ
(3)の頭部軸(4)に歯車(5)を設け、ウォーム歯
車(6)を組み、電動モーター(7)に接続する。円筒
型プランジャー(1)の基部外周部に回転止めガイド
(8)を設け、回転止めガイド(8)を滑らせるよう
に、フレーム(9)内面にガイドレール(10)を設け
る。シリンダー(12)にはオイル吐出口(13)を設
ける。 【効果】(イ)脈流のない高圧の吐出油圧が得られる。 (ロ)精密な流量コントロールができる。
(57) [Abstract] [Purpose] The present invention relates to a liquid pressure generation device in a liquid pressurization type eluent discharge device of a liquid chromatograph used in chemical analysis, capable of precise flow rate control, high pressure discharge hydraulic pressure without pulsation. The present invention relates to a pulseless hydraulic pump for obtaining [Structure] A female screw (2) is provided on the inner surface of a cylindrical plunger (1), and a feed screw (3) is inserted. A gear (5) is provided on the head shaft (4) of the feed screw (3), and a worm gear (6) is assembled and connected to an electric motor (7). A rotation stopper guide (8) is provided on the outer periphery of the base of the cylindrical plunger (1), and a guide rail (10) is provided on the inner surface of the frame (9) so that the rotation stopper guide (8) can slide. The cylinder (12) is provided with an oil outlet (13). [Advantages] (a) A high discharge hydraulic pressure without pulsation can be obtained. (B) Precise flow rate control is possible.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

この考案は、化学分析で用いられる液体クロマトグラフの液体加圧式溶離液吐出 装置における液体圧力発生装置に関するものである。 The present invention relates to a liquid pressure generating device in a liquid pressurized eluent discharging device of a liquid chromatograph used in chemical analysis.

【0002】[0002]

【従来の技術】[Prior art]

液体クロマトグラフの液体加圧式溶離液吐出装置用の液体圧力発生を目的とした 従来の技術はない。目的の異なる油圧ポンプは相当種類あるが、発生圧力と脈流 の点で本用途には不向きである。 There is no conventional technique for the purpose of generating a liquid pressure for a liquid pressure type eluent discharge device of a liquid chromatograph. There are many types of hydraulic pumps with different purposes, but they are not suitable for this application in terms of generated pressure and pulsating flow.

【0003】[0003]

【考案が解決しょうとする課題】[Issues to be solved by the device]

(イ)脈流のない高圧の吐出油を得る。 (ロ)精密な流量コントロールができる。 (ハ)吐出と吸入とが選択的にできる。 (B) Obtain high-pressure discharged oil without pulsating flow. (B) Precise flow rate control is possible. (C) Discharge and inhalation can be selectively performed.

【0004】[0004]

【課題を解決するための手段】[Means for Solving the Problems]

(イ)円筒型プランジャー(1)の内面にメネジ(2)を設け、送りネジ(3) を挿入する。 (ロ)送りネジ(3)の頭部軸(4)に歯車(5)を設け、ウォーム歯車(6) を組み、電動モーター(7)に接続する。 (ハ)円筒型プランジャー(1)の基部外周に回転止めガイド(8)を設ける。 (ニ)回転止めガイド(8)を滑らせるように、フレーム(9)内面にガイドレ ール(10)を設ける。 (ホ)送りネジ(3)の頭部軸(4)はベアリング(11)を介してフレーム( 9)に固定し、フレーム(9)はシリンダー(12)基部に固定する。 (ヘ)シリンダー(12)頭部にはオイル吐出口(13)を設ける 以上の如く構成された、無脈流油圧ポンプ。 (A) The female screw (2) is provided on the inner surface of the cylindrical plunger (1), and the feed screw (3) is inserted. (B) A gear (5) is provided on the head shaft (4) of the feed screw (3), and a worm gear (6) is assembled and connected to the electric motor (7). (C) A rotation stopper guide (8) is provided on the outer circumference of the base of the cylindrical plunger (1). (D) A guide rail (10) is provided on the inner surface of the frame (9) so that the rotation stopper guide (8) can slide. (E) The head shaft (4) of the feed screw (3) is fixed to the frame (9) via the bearing (11), and the frame (9) is fixed to the base of the cylinder (12). (F) The oil discharge port (13) is provided on the head of the cylinder (12). The pulseless hydraulic pump configured as described above.

【0005】[0005]

【作用】[Action]

次に本考案の作用を述べると。 電動モーター(7)を回し、ウォーム歯車(6)により減速し、送りネジ(3) を回転させる。円筒型プランジャー(1)の内面にはメネジ(2)が設けてあり 、円筒型プランジャー(1)の基部外周に回転止めガイド(8)を設けているの で、円筒型プランジャー(1)は送りネジ(3)により押されて、シリンダー( 12)内に満たされている油圧オイル(14)がオイル吐出口(13)から吐出 される。電動モーター(7)を逆転すると、円筒型プランジャー(1)は後退し 、油圧オイル(14)はシリンダー(12)内に吸入される。電動モーター(7 )にステッピングモーターを採用すれば、円筒型プランジャー(1)の送りを精 密にコントロールできる。単動シリンダータイプであるため脈動はなく、従って 油圧オイルの脈流は発生しない。 Next, the operation of the present invention will be described. The electric motor (7) is rotated, the worm gear (6) decelerates, and the feed screw (3) is rotated. A female screw (2) is provided on the inner surface of the cylindrical plunger (1), and a rotation stopper guide (8) is provided on the outer periphery of the base of the cylindrical plunger (1). ) Is pushed by the feed screw (3), and the hydraulic oil (14) filled in the cylinder (12) is discharged from the oil discharge port (13). When the electric motor (7) is rotated in the reverse direction, the cylindrical plunger (1) retracts and the hydraulic oil (14) is sucked into the cylinder (12). If a stepping motor is used for the electric motor (7), the feed of the cylindrical plunger (1) can be precisely controlled. Since it is a single-acting cylinder type, there is no pulsation, so hydraulic oil pulsation does not occur.

【0006】[0006]

【実施例】【Example】

電動モーター(7)にはステッピングモーターを採用する。ウォーム歯車(6) の総合減速比を1/1,000とする。今、電動モーター(7)が 1,000 rpmで回転すると、送りネジ(3)は1rpmで回転し、送りネジ(3)のピ ッチを2mmとしておくと、1回転に付き2mmピッチで円筒型プランジャー( 1)を送ることになり、円筒型プランジャー(1)の直径を25mmとすると、 油圧オイル(14)の吐出量は約1ml/minとなり、十分実用に耐えられる 。また、円筒型プランジャー(1)の直径を25mmとし、可動長を500mm とすると約250mlのオイル量を連続して吐出でき、約4時間の連続分析に耐 えられる。円筒型プランジャー(1)の直径と可動長を、また、ステッピングモ ーターの能力を選択することで、500kg/cm以上の吐出油圧を得ること ができ、液体クロマトグラフの幅広いニーズに対応することが可能である。A stepping motor is used for the electric motor (7). The total reduction ratio of the worm gear (6) is set to 1/1000. Now, when the electric motor (7) rotates at 1,000 rpm, the feed screw (3) rotates at 1 rpm, and if the pitch of the feed screw (3) is set to 2 mm, a cylinder is rotated at a pitch of 2 mm per rotation. If the diameter of the cylindrical plunger (1) is set to 25 mm, the discharge amount of the hydraulic oil (14) will be about 1 ml / min, which is sufficient for practical use. When the cylindrical plunger (1) has a diameter of 25 mm and a movable length of 500 mm, an oil amount of about 250 ml can be continuously discharged, and a continuous analysis of about 4 hours can be endured. By selecting the diameter and movable length of the cylindrical plunger (1) and the ability of the stepping motor, it is possible to obtain a discharge hydraulic pressure of 500 kg / cm 2 or more, and to meet a wide range of liquid chromatograph needs. Is possible.

【0007】[0007]

【考案の効果】[Effect of device]

(イ)脈流のない高圧の油圧源が得られる。 (ロ)精密な流量コントロールができる。 (ハ)吐出と吸入とが選択的にできる。 (A) A high-pressure hydraulic source without pulsation can be obtained. (B) Precise flow rate control is possible. (C) Discharge and inhalation can be selectively performed.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案の縦断面図FIG. 1 is a vertical sectional view of the present invention.

【図2】本考案の要部斜視図FIG. 2 is a perspective view of an essential part of the present invention.

【符号の説明】 1 円筒型プランジャー 2 メネジ 3 送りネジ 4 頭部軸 5 歯車 6 ウォーム歯車 7 電動モーター 8 回転止めガイド 9 フレーム 10 ガイドレール 11 ベアリング 12 シリンダー 13 オイル吐出口 14 オイル[Explanation of symbols] 1 cylindrical plunger 2 female screw 3 feed screw 4 head shaft 5 gear 6 worm gear 7 electric motor 8 rotation stop guide 9 frame 10 guide rail 11 bearing 12 cylinder 13 oil discharge port 14 oil

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】(イ)円筒型プランジャー(1)の内面に
メネジ(2)を設け、送りネジ(3)を挿入する。 (ロ)送りネジ(3)の頭部軸(4)に歯車(5)を設
け、ウォーム歯車(6)を組み、電動モーター(7)に
接続する。 (ハ)円筒型プランジャー(1)の基部外周に回転止め
ガイド(8)を設ける。 (ニ)回転止めガイド(8)を滑らせるように、フレー
ム(9)内面にガイドレール(10)を設ける。 以上の如く構成された、無脈流油圧ポンプ。
(A) A female screw (2) is provided on the inner surface of a cylindrical plunger (1), and a feed screw (3) is inserted therein. (B) A gear (5) is provided on the head shaft (4) of the feed screw (3), and a worm gear (6) is assembled and connected to the electric motor (7). (C) A rotation stopper guide (8) is provided on the outer circumference of the base of the cylindrical plunger (1). (D) A guide rail (10) is provided on the inner surface of the frame (9) so that the rotation stop guide (8) can slide. A pulsating flow hydraulic pump configured as described above.
JP7109093U 1993-11-24 1993-11-24 Pulseless hydraulic pump Pending JPH0735768U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7109093U JPH0735768U (en) 1993-11-24 1993-11-24 Pulseless hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7109093U JPH0735768U (en) 1993-11-24 1993-11-24 Pulseless hydraulic pump

Publications (1)

Publication Number Publication Date
JPH0735768U true JPH0735768U (en) 1995-07-04

Family

ID=13450496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7109093U Pending JPH0735768U (en) 1993-11-24 1993-11-24 Pulseless hydraulic pump

Country Status (1)

Country Link
JP (1) JPH0735768U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003061904A (en) * 2001-08-30 2003-03-04 Pentax Corp Liquid supplying device for endoscope
JP2011058564A (en) * 2009-09-10 2011-03-24 Honda Motor Co Ltd Fluid pressure actuator
WO2012091508A2 (en) * 2010-12-31 2012-07-05 Shin Jae Hee Compressor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003061904A (en) * 2001-08-30 2003-03-04 Pentax Corp Liquid supplying device for endoscope
JP2011058564A (en) * 2009-09-10 2011-03-24 Honda Motor Co Ltd Fluid pressure actuator
WO2012091508A2 (en) * 2010-12-31 2012-07-05 Shin Jae Hee Compressor
WO2012091508A3 (en) * 2010-12-31 2012-11-29 Shin Jae Hee Compressor
KR101335345B1 (en) * 2010-12-31 2013-12-03 신재희 Compressor

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