JPS63190590U - - Google Patents
Info
- Publication number
- JPS63190590U JPS63190590U JP8173287U JP8173287U JPS63190590U JP S63190590 U JPS63190590 U JP S63190590U JP 8173287 U JP8173287 U JP 8173287U JP 8173287 U JP8173287 U JP 8173287U JP S63190590 U JPS63190590 U JP S63190590U
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- exhaust passage
- pressure chamber
- diaphragm
- pump
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000037452 priming Effects 0.000 claims description 4
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Reciprocating Pumps (AREA)
Description
第１図は本考案の呼水装置の一実施例を示す一
部断面正面図、第２図は従来の呼水装置を示す一
部断面正面図である。
ａ……呼水装置、ｂ……給水ポンプ、ｃ……給
水ポンプのポンプ室、２……排気通路、３……ダ
イヤフラム式止水弁、３Ｂ……止水弁の負圧圧力
室、３Ｇ……止水弁の弁体、３Ｊ……ダイヤフラ
ム、４……逆止弁、５……真空ポンプ、５Ａ……
真空ポンプのポンプ室、５Ｄ……真空ポンプのポ
ンプ室の負圧側部分、９……止水弁駆動用負圧通
路、１０……自動ドレン抜き弁。
FIG. 1 is a partially sectional front view showing an embodiment of the priming device of the present invention, and FIG. 2 is a partially sectional front view showing a conventional priming device. a... Priming device, b... Water pump, c... Pump chamber of water pump, 2... Exhaust passage, 3... Diaphragm water stop valve, 3B... Negative pressure chamber of water stop valve, 3G ...Water stop valve body, 3J...Diaphragm, 4...Check valve, 5...Vacuum pump, 5A...
Pump chamber of vacuum pump, 5D... Negative pressure side portion of pump chamber of vacuum pump, 9... Negative pressure passage for driving water stop valve, 10... Automatic drain valve.
Claims (1)
通路を有し、該排気通路の他端には真空ポンプが
接続され、前記排気通路には呼水が吸上げられた
時に該呼水により弁体が押上げられて前記排気通
路を閉じるダイヤフラム式止水弁と前記真空ポン
プが停止した時に前記排気通路を閉じる逆止弁と
が配設されている給水ポンプの呼水装置において
、前記ダイヤフラム式止水弁は、前記排気通路か
ら独立して形成されている負圧圧力室と、前記負
圧圧力室に一端が接続されて他端が前記真空ポン
プのポンプ室の負圧側部分に接続されて前記負圧
圧力室を負圧にするための止水弁駆動用負圧通路
と、前記負圧圧力室の圧力変化で作動するダイヤ
フラムと、前記ダイヤフラムの作動により前記排
気通路の開閉動作をする弁体と、前記負圧圧力室
に設けられて該負圧圧力室が大気圧になつた時に
開く自動ドレン抜き弁とを備えていることを特徴
とする給水ポンプの呼水装置。 The exhaust passage has one end connected to the pump chamber of the water supply pump, and the other end of the exhaust passage is connected to a vacuum pump. In the priming device for a water supply pump, the diaphragm water stop valve is provided with a diaphragm water stop valve that closes the exhaust passage when the vacuum pump is pushed up, and a check valve that closes the exhaust passage when the vacuum pump stops. The water valve includes a negative pressure chamber formed independently from the exhaust passage, and one end connected to the negative pressure chamber and the other end connected to the negative pressure side portion of the pump chamber of the vacuum pump. a negative pressure passage for driving a water stop valve to make a negative pressure chamber negative pressure; a diaphragm that operates according to pressure changes in the negative pressure chamber; and a valve body that opens and closes the exhaust passage by operating the diaphragm. and an automatic drain valve that is provided in the negative pressure chamber and opens when the negative pressure chamber reaches atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8173287U JPH0533750Y2 (en) | 1987-05-28 | 1987-05-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8173287U JPH0533750Y2 (en) | 1987-05-28 | 1987-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63190590U true JPS63190590U (en) | 1988-12-08 |
| JPH0533750Y2 JPH0533750Y2 (en) | 1993-08-26 |
Family
ID=30933734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8173287U Expired - Lifetime JPH0533750Y2 (en) | 1987-05-28 | 1987-05-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0533750Y2 (en) |
-
1987
- 1987-05-28 JP JP8173287U patent/JPH0533750Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0533750Y2 (en) | 1993-08-26 |