JPH01151784A - Simple vacuum pump - Google Patents
Simple vacuum pumpInfo
- Publication number
- JPH01151784A JPH01151784A JP31051787A JP31051787A JPH01151784A JP H01151784 A JPH01151784 A JP H01151784A JP 31051787 A JP31051787 A JP 31051787A JP 31051787 A JP31051787 A JP 31051787A JP H01151784 A JPH01151784 A JP H01151784A
- Authority
- JP
- Japan
- Prior art keywords
- syringe
- tip
- vacuum pump
- container
- rubber board
- 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
Links
- 238000000034 method Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、注射器にゴムなどの弁を付け、ピストンの
出し入れによって、真空に近い状態をつくりだす装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that creates a near-vacuum state by attaching a valve made of rubber or the like to a syringe and moving a piston in and out.
理科の実験などで、真空に近い状態をつくるとき、従来
、その方法として、水を加熱し、水蒸気にして空気を追
い出す方法が行なわれてきたが、火を使うことの危険性
や、水蒸気を冷やすと真空状態ができることが理解しに
くいなどの問題があった。また、電動の真空ポンプは、
高価で購入がむずかしいのが現状である。Traditionally, when creating a near-vacuum state in science experiments, etc., the method was to heat water, turn it into steam, and expel the air. There were problems such as it being difficult to understand that a vacuum state can be created by cooling. In addition, electric vacuum pumps
Currently, they are expensive and difficult to purchase.
本発明は、小・中学校などの理科実験に必要な真空に近
い状態を、極めて簡単な方法でつくりだすことに成功し
たものである。The present invention has succeeded in creating a near-vacuum state necessary for science experiments in elementary and junior high schools using an extremely simple method.
以下、それを説明すると、 (イ)ゴムなどの弁を、注射器の先に入れる。I will explain it below, (a) Insert a rubber or other valve into the tip of the syringe.
(ロ)注射器の先端の側面に孔をあける(ハ)(ロ)で
あけた孔の上にゴムなどの弁をつける。(b) Drill a hole on the side of the tip of the syringe (c) Attach a valve made of rubber or other material over the hole drilled in (b).
こうすれば、ピストンの出し入れにより、注射器の先端
から吸入された気体は、側面の込から排気される。排気
したい物の容器と注射器の先端とを、管で接続すること
により、簡単に真空に近い状態をつくりだすことができ
る。例えぱ、500mlの丸底フラスコでは、ピストン
をわずか30回程動かすだけで、90%の空気がぬける
のである。In this way, the gas inhaled from the tip of the syringe by moving the piston in and out is exhausted from the side recess. By connecting the container containing the substance to be evacuated and the tip of the syringe with a tube, a near-vacuum state can be easily created. For example, in a 500ml round bottom flask, 90% of the air can be removed by moving the piston just 30 times.
本発明は、このように簡単な方法で真空に近い状態をつ
くることを可能にするものである。The present invention makes it possible to create a state close to a vacuum using such a simple method.
第1図は本案の断面図
第2図は本案の見取り図
(1)はゴムなどの弁、(2)は側面の込、(3)はゴ
ムなどの弁。Figure 1 is a sectional view of the proposed design. Figure 2 is a sketch of the proposed design. (1) is a valve made of rubber, (2) is a side insert, and (3) is a valve made of rubber.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31051787A JPH01151784A (en) | 1987-12-08 | 1987-12-08 | Simple vacuum pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31051787A JPH01151784A (en) | 1987-12-08 | 1987-12-08 | Simple vacuum pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01151784A true JPH01151784A (en) | 1989-06-14 |
Family
ID=18006182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP31051787A Pending JPH01151784A (en) | 1987-12-08 | 1987-12-08 | Simple vacuum pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01151784A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2372544A (en) * | 2000-12-08 | 2002-08-28 | Msp Corp | Vacuum source for leak test fixture |
JP2010271294A (en) * | 2009-05-20 | 2010-12-02 | Ami Techno Ltd | Contact-pressure measuring method of air filling type |
-
1987
- 1987-12-08 JP JP31051787A patent/JPH01151784A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2372544A (en) * | 2000-12-08 | 2002-08-28 | Msp Corp | Vacuum source for leak test fixture |
JP2010271294A (en) * | 2009-05-20 | 2010-12-02 | Ami Techno Ltd | Contact-pressure measuring method of air filling type |
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