JPH086698B2 - Liquid ring pump - Google Patents

Liquid ring pump

Info

Publication number
JPH086698B2
JPH086698B2 JP3178363A JP17836391A JPH086698B2 JP H086698 B2 JPH086698 B2 JP H086698B2 JP 3178363 A JP3178363 A JP 3178363A JP 17836391 A JP17836391 A JP 17836391A JP H086698 B2 JPH086698 B2 JP H086698B2
Authority
JP
Japan
Prior art keywords
casing
chamber
water
shaft
liquid
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.)
Expired - Fee Related
Application number
JP3178363A
Other languages
Japanese (ja)
Other versions
JPH05118285A (en
Inventor
浄 島津
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.)
Ebara Corp
Original Assignee
Ebara Corp
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 Ebara Corp filed Critical Ebara Corp
Priority to JP3178363A priority Critical patent/JPH086698B2/en
Publication of JPH05118285A publication Critical patent/JPH05118285A/en
Publication of JPH086698B2 publication Critical patent/JPH086698B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/008Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C27/009Shaft sealings specially adapted for pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C19/00Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、内面が円筒のケーシン
グ内に偏心して取付けられる羽根車を有し、該ケーシン
グ内の回転液膜の作動で気体を吸気・排気するようにし
た液封式ポンプに関し、特にその軸封機構に関する。
BACKGROUND OF THE INVENTION The present invention has an impeller inner surface is mounted eccentrically in the casings <br/> grayed circle cylinder, intake and exhaust gas at the operating rotational liquid film inside the casing The present invention relates to a liquid ring pump, and particularly to a shaft sealing mechanism thereof.

【0002】[0002]

【従来の技術】従来、液封式ポンプには、内面が円筒形
に形成されたケーシング内に、前向きになった羽根を多
数有する羽根車を中心をずらして位置したものと、内面
が上下に膨らみを有するまゆ形状(楕円形)に形成され
たケーシング内に、上記の羽根車を同心状に設置したも
のとがあり、何れの型式のものも、予めケーシングのほ
ぼ半分位入れられた水その他の液体を、運転時、羽根車
によってひっかくように回転し、遠心力によってケーシ
ング内面に沿って液膜を形成し、該液膜が羽根車の隣り
合った2枚の羽根と両側板とによって形成される各部屋
内を出入りするときのポンプ作用(ピストン作用)によ
って気体の吸気・排気作用を行わせるようになってい
る。
2. Description of the Related Art Conventionally, in liquid ring pumps, an inner surface of a casing is formed in a cylindrical shape, and an impeller having a large number of forwardly facing blades is located off center, and an inner surface is vertically moved. There is a case in which the above impellers are installed concentrically in a casing formed in the shape of an eyebrow with a bulge (elliptical shape). In any type, water or the like that is placed in approximately half of the casing in advance Of the liquid is rotated by an impeller during operation so that a liquid film is formed along the inner surface of the casing by centrifugal force, and the liquid film is formed by two adjacent blades of the impeller and both side plates. The gas is taken in and out by the pump action (piston action) when entering and leaving each room.

【0003】図3は、上記前者に属する従来例を示す縦
断面図であり、図4は、図3のIV−IV線断面図である。
図において、ケーシング(胴体)1は円筒形に形成され
ており、その両側にはケーシングカバー2,2が取付け
られ、これらの両ケーシングカバー2,2の外側には軸
受ブラケット3,3が取付けられている。一方、ケーシ
ング1の内部には、前向きになった羽根を多数有する羽
根車4が頂部をケーシング内面に近接するように上方に
偏心して収容され、軸5を介し軸受6によって支持され
ている。
FIG. 3 is a longitudinal sectional view showing a conventional example belonging to the former, and FIG. 4 is a sectional view taken along line IV-IV of FIG.
In the figure, a casing (body) 1 is formed in a cylindrical shape, casing covers 2 and 2 are attached to both sides of the casing 1, and bearing brackets 3 are attached to the outside of both casing covers 2 and 2. ing. On the other hand, inside the casing 1, an impeller 4 having a large number of forward-facing blades is eccentrically housed so that its top is close to the inner surface of the casing, and is supported by a bearing 6 via a shaft 5.

【0004】運転時、ケーシング内面に沿って形成され
る、内面が図の破線7aで示された液封リング7で周辺
部を封じられた各羽根室の容積変化によって、ポンプ作
用させるようになっており、空気(気体)が羽根車4へ
半径方向に出入りするポートシリンダ8が羽根車4の内
面に接するようにして設けられている。該ポートシリン
ダ8は、図4において液膜内面7aに沿って右側ほぼ1
80°の角度範囲に吸気口が、また左側ほぼ180°の
角度範囲に排気口がそれぞれ設けられており、ケーシン
グカバー2の内側に形成される吸排気通路9に連通され
ている。
During operation, the inner surface formed along the inner surface of the casing is pumped by a change in the volume of each blade chamber whose peripheral portion is sealed by the liquid ring 7 shown by the broken line 7a in the figure. A port cylinder 8 through which air (gas) enters and leaves the impeller 4 in the radial direction is provided so as to contact the inner surface of the impeller 4. The port cylinder 8 is located substantially on the right side along the inner surface 7a of the liquid film in FIG.
An intake port is provided in the angle range of 80 °, and an exhaust port is provided in the angle range of approximately 180 ° on the left side, and communicates with an intake / exhaust passage 9 formed inside the casing cover 2.

【0005】他方、当該液封式ポンプの軸封手段(機
構)は、軸5が両ケーシングカバー2を貫通する部分に
設けられた軸封部10によって行われ、該軸封部10
は、ケーシング1の最下部に設けられた水室11へ補給
水弁12を通り、矢印aのように補給された圧力水を、
矢印bのように補給水通路13、ケーシングカバー2の
内側通路14を経て注水して軸封効果が図られている。
なお、一般に上記圧力水は、外部から供給される作動水
の補給水を、一部分岐して軸封側へ回すようになってお
り、この際、補給水通路が正圧となるようにケーシング
内部への補給水口を絞っている。
On the other hand, the shaft sealing means (mechanism) of the liquid ring pump is performed by a shaft sealing portion 10 provided at a portion where the shaft 5 penetrates both casing covers 2, and the shaft sealing portion 10 is provided.
Is the pressure water supplied through the makeup water valve 12 to the water chamber 11 provided at the bottom of the casing 1 as indicated by the arrow a,
As shown by arrow b, water is injected through the makeup water passage 13 and the inner passage 14 of the casing cover 2 to achieve the shaft sealing effect.
Generally, the above-mentioned pressure water is such that the makeup water supplied from the outside is partially branched and is turned to the shaft sealing side. At this time, the makeup water passage is at a positive pressure inside the casing. The water supply port to

【0006】[0006]

【発明が解決しようとする課題】上記のように、従来例
における液封式ポンプの軸封装置においては、外部から
の圧力水を軸封部へ注水して軸封効果を図って来たた
め、圧力水が供給されないときや、圧力水の圧力が低い
かポンプ真空度が高いときなどには、軸封効果が充分で
なく、真空が低下する場合があるという問題点があっ
た。
As described above, in the shaft seal device for the liquid ring pump in the conventional example, the pressure water from the outside is poured into the shaft seal portion to achieve the shaft seal effect. When the pressure water is not supplied, or when the pressure of the pressure water is low or the degree of vacuum of the pump is high, there is a problem that the shaft sealing effect is not sufficient and the vacuum may decrease.

【0007】本発明は、外部の軸封用圧力水がないとき
でも、常に安定した軸封効果が期待でき、高真空域での
性能が向上し、高真空維持が容易となる液封式ポンプを
提供することを目的としている。
According to the present invention, even when there is no external pressure water for shaft sealing, a stable shaft sealing effect can be expected at all times, performance in a high vacuum region is improved, and high vacuum maintenance is facilitated. Is intended to provide.

【0008】上記の目的を達成するために、本発明は、
内面が円筒のケーシング内に、上方に偏心して取付けら
れる羽根車を有し、該ケーシング内の回転液膜の作動で
気体を吸気・排気するようにした液封式ポンプにおい
て、上記ケーシングの両側のケーシングカバーの内部に
形成された吸込室と吐出室を、軸心より下方で、軸封部
の封水リングに連通するように平行する隔壁によって区
画された圧力室によって分割し、上記ケーシングの死点
に相当する下方の最偏心位置部と、上記圧力室とを通孔
を介して導通させ、上記死点部の液膜圧力水の一部を、
該圧力室を経て軸封部の封水リングへ導いて軸封するよ
うにしたことを特徴としている。
To achieve the above object, the present invention provides
The inner surface in a circle cylinder casing has an impeller mounted eccentrically upwards, the liquid seal pump which is adapted to the intake and exhaust gas at the operating rotational liquid film inside the casing, the casing Inside the casing covers on both sides
Place the formed suction chamber and discharge chamber below the shaft center,
It is divided by a parallel partition so as to communicate with the sealing ring of
The dead point of the casing divided by the pressure chamber
Through the lowermost eccentric position corresponding to
And conduct a part of the liquid film pressure water at the dead point,
It is characterized in that the shaft is guided by passing through the pressure chamber to the water sealing ring of the shaft sealing portion.

【0009】[0009]

【作用】本発明は上記のように構成されているので、ポ
ンプ運転時、羽根車の回転により、ケーシング内面に沿
って形成された液封リングの水膜で外側を封じられた各
羽根室の容積変化によってポンプ作用を行なうことは従
来のものと変りはないが、本発明では、ケーシンの死点
に相当する下方の最偏心位置部の正圧水の一部が、通孔
を経て、ケーシングカバーの内部に形成された吸込室と
吐出室を軸心より下方で分割する圧力室へ導かれ、該圧
力室から軸封部の封水リングへ通水される。 このよう
にして、外部の圧力水を必要とせずに、運転中、常にケ
ーシング内の液封リング圧力水の一部を利用して確実な
軸封効果が得られる。
Since the present invention is configured as described above, the rotation of the impeller during pump operation causes the blade chamber of each vane chamber closed on the outside by the water film of the liquid ring formed along the inner surface of the casing. Although the pumping action is not different from the conventional one by the volume change, in the present invention, a part of the positive pressure water at the lower most eccentric position portion corresponding to the dead point of the casing has a through hole.
Through the suction chamber formed inside the casing cover
The discharge chamber is guided to a pressure chamber that divides below the shaft center, and water is passed from the pressure chamber to the sealing ring of the shaft sealing portion. In this way, a reliable shaft sealing effect can be obtained by constantly utilizing a part of the liquid sealing ring pressure water in the casing during operation without requiring external pressure water.

【0010】[0010]

【実施例】次に、本発明の実施例を図面と共に説明す
る。図1は、本発明の一実施例を示す液封式ポンプの縦
断面図であり、図2は、図1のII−II線による矢視図
で、ケーシング内の羽根車と側板の吸気口及び排気口と
の位置関係、並びにケーシングカバー内部に形成された
吸込室、吐出室及び圧力室を示す説明図であり、図中、
図3、図4に記載した符号と同一の符号は同一ないし同
類部分を示すものとする。
Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a liquid ring pump showing an embodiment of the present invention, and FIG. 2 is a view taken along the line II-II in FIG. 1, showing an impeller inside a casing and an intake port of a side plate. It is an explanatory view showing the positional relationship with the exhaust port, and the suction chamber, the discharge chamber and the pressure chamber formed inside the casing cover,
The same reference numerals as those shown in FIGS. 3 and 4 denote the same or similar parts.

【0011】図において、ケーシング21は円筒形に形
成されており、上部に、吸気フランジ31と排気フラン
ジ32の各開口31aと32aにそれぞれ通じる通路2
1aと21bを有し、両側面はそれぞれ側板(サイドプ
レート)22,22によって閉鎖されており、これら各
側板22には、図2に示すように、左右両側に両端部を
除いてほぼ半円角度に近く吸込ポート23と吐出ポート
24が穿設されている。
In the figure, a casing 21 is formed in a cylindrical shape, and at the upper part thereof, a passage 2 communicating with the openings 31a and 32a of the intake flange 31 and the exhaust flange 32, respectively.
1a and 21b, and both side surfaces are closed by side plates (side plates) 22 and 22, respectively. These side plates 22 have a semi-circular shape on both left and right sides, as shown in FIG. A suction port 23 and a discharge port 24 are provided near the angle.

【0012】また、上記ケーシング21の両側には、ケ
ーシングカバー25,25が取付けられており、該カバ
ーの内部は、左右に吸込室26と吐出室27と、及び
れらの吸込室36と吐出室27を軸心より下方で分割し
且つケーシング21の死点に相当する下方の最偏心位置
Aに対向して、圧力室28が軸封部10の封水リング1
0aに連通するように平行する隔壁28aによってそれ
ぞれ区画して形成されている。そして該吸込室26は前
記吸込ポート23に、また吐出室27は吐出ポート24
にそれぞれ連通され、また圧力室28は、上記のように
通孔29を経てケーシング内の最偏心位置Aと連通され
ると共に、軸5が両ケーシングカバー25を貫通する個
所に設けられたグランドパッキンからなる軸封部10の
封水リング10aに連通している。
[0012] On both sides of the casing 21 has a casing cover 25, 25 is attached, the inside of the cover is provided with a suction chamber 26 in the left-right and the discharge chamber 27, and this
These suction chamber 36 and discharge chamber 27 are divided below the axis.
And opposite the top eccentric position A of the lower corresponding to dead center of the casing 21, seal water ring in the pressure chamber 28 shaft seal 10 1
The partition walls 28a are formed in parallel with each other so as to communicate with 0a . The suction chamber 26 is the suction port 23, and the discharge chamber 27 is the discharge port 24.
Further, the pressure chamber 28 is communicated with the most eccentric position A in the casing through the through hole 29 as described above , and the shaft 5 is provided at a position where the shaft 5 penetrates both casing covers 25. It communicates with the water sealing ring 10a of the shaft sealing portion 10 composed of the gland packing.

【0013】一方、上記ケーシング21の内部には、前
向きになった羽根を多数(12枚〜24枚)有し、且つ
両側が開放された羽根車30が、頂部をケーシング内面
に近接するように上方に偏心して収容され、軸5を介し
軸受6によって支持されている。図中、15は振切り板
(フリンガ)である。
On the other hand, inside the casing 21, an impeller 30 having a large number of forward-facing blades (12 to 24 blades) and open on both sides is arranged so that the top is close to the inner surface of the casing. It is accommodated eccentrically upward and is supported by a bearing 6 via a shaft 5. In the figure, reference numeral 15 is a swinging plate (flinger).

【0014】次に、作用について説明すると、ポンプ運
転時、羽根車30の図2で時計方向の回転により、ケー
シング21の内面に沿って液封リング7が形成され、該
液封リング7で外側を封じられた各羽根室の容積変化に
よってポンプ作用を行ない、空気(気体)は、図2で右
側の吸込行程で、吸込フランジ31の入口31a(イ)
→通路21a(ロ)→ケーシングカバー25の吸込室2
6(ハ)→側板22の吸込ポート23(ニ)の経路で羽
根車30内に吸引され、次いで、図2で左側の吐出行程
で、吐出ポート24(ホ)→ケーシングカバー25の吐
出室27(ヘ)→通路21b(ト)→吐出フランジ32
の出口32a(チ)から排気される。
Next, the operation will be described. When the pump is in operation, the impeller 30 is rotated clockwise in FIG. 2 to form the liquid sealing ring 7 along the inner surface of the casing 21. The pumping action is performed by the change in the volume of each of the enclosed blade chambers, and the air (gas) is in the suction stroke on the right side in FIG. 2 at the inlet 31a (a) of the suction flange 31.
→ passage 21a (b) → suction chamber 2 of casing cover 25
6 (C) → Suctioned into the impeller 30 along the path of the suction port 23 (D) of the side plate 22, and then in the discharge stroke on the left side in FIG. 2, the discharge port 24 (E) → the discharge chamber 27 of the casing cover 25. (F) → passage 21b (g) → discharge flange 32
It is exhausted from the outlet 32a (H).

【0015】この際、ケーシング21内の死点に相当す
る最低偏心位置Aに穿設された通孔29を通って、液封
リング7の圧力水(正圧水)の一部が、両側のケーシン
グカバー25の圧力室28へ導かれ、これらの圧力水
は、軸封部10のグランド部の封水リング10aへ通水
される。このようにして、外部の圧力水を必要とせず
に、運転中、常にケーシング液封リング圧力水の一部を
利用して確実な軸封効果が得られる。
At this time, a part of the pressure water (positive pressure water) of the liquid ring 7 passes through the through hole 29 bored at the lowest eccentric position A corresponding to the dead center in the casing 21 on both sides. The pressure water is guided to the pressure chamber 28 of the casing cover 25, and the pressure water is passed through the water sealing ring 10 a of the gland portion of the shaft sealing portion 10. In this way, a reliable shaft sealing effect can be obtained by constantly utilizing a part of the casing liquid sealing ring pressure water during operation without requiring external pressure water.

【0016】[0016]

【0017】[0017]

【発明の効果】以上説明したように、本発明によれば、
液封式ポンプのケーシングの両側のケーシングカバーの
内部に形成された吸込室と吐出室を、軸心より下方で、
軸封部の封水リングに連通するように平行する隔壁によ
って区画された圧力室によって分割し、上記ケーシング
の死点に相当する下方の最偏心位置部と、上記圧力室と
を通孔を介して導通させ、上記死点部の液膜圧力水の一
部を、該圧力室を経て軸封部の封水リングへ導いて軸封
するようにしたことにより、次のような効果が奏され
る。
As described above, according to the present invention,
The casing covers on both sides of the liquid ring pump casing
Inside the suction chamber and the discharge chamber, below the axis,
The partition wall parallel to the water seal ring of the shaft seal part
The casing is divided by pressure chambers
The most eccentric position below, which corresponds to the dead center of
It was conducted through the through hole, a portion of the liquid film pressure water of the dead point unit, by which is adapted to the shaft seal leading to seal water ring shaft seal through the pressure chamber, as follows The effect is played.

【0018】(i)軸封水として必要な圧力水に外部か
らの通水を必要とせず、常に安定した軸封効果が得ら
れ、また、そのための外部配管も不要となる。 (ii)外部に圧力水がない現場においても、確実に軸封
(シール)作用を行なうことができる。 (iii) 液封リングが、高真空においても常に正圧である
ので、軸封作用が確実で、高真空での性能向上が大とな
る。(iv)吸込室と吐出室を下方で分割するために平行する
隔壁によって区画された圧力室からの水が、軸封部の封
水リングへ最下位より最短距離で且つ最短時間で送り込
まれるので、充分な封水効果を得ることができる。
(I) The pressure water required as the shaft sealing water does not need to be passed from the outside, so that a stable shaft sealing effect can always be obtained, and an external pipe for that purpose is also unnecessary. (Ii) It is possible to surely perform the shaft sealing (sealing) action even in a site where there is no pressurized water outside. (iii) Since the liquid ring is always positive pressure even in a high vacuum, the shaft sealing action is reliable, and the performance improvement in a high vacuum is large. (Iv) Parallel to divide the suction and discharge chambers below
Water from the pressure chamber partitioned by the partition wall is
Send to the water ring in the shortest distance from the bottom and in the shortest time
Therefore, a sufficient water sealing effect can be obtained.

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

【図1】本発明の一実施例を示す液封式ポンプの縦断面
図である。
FIG. 1 is a vertical cross-sectional view of a liquid ring pump showing an embodiment of the present invention.

【図2】図1のII−II線による矢視図で、ケーシング及
びケーシングカバーの内部を示す説明図である。
FIG. 2 is an arrow view taken along the line II-II of FIG. 1 and is an explanatory view showing the inside of a casing and a casing cover.

【図3】従来例を示す縦断面図である。FIG. 3 is a vertical sectional view showing a conventional example.

【図4】図3のIV−IV線による断面図である。FIG. 4 is a sectional view taken along line IV-IV in FIG.

【符号の説明】[Explanation of symbols]

7 液封リング 10 軸封部 10a 封水リング 21 ケーシング 22 側板 23 吸込ポート 24 吐出ポート 25 ケーシングカバー 26 吸込室 27 吐出室 28 圧力室28a 隔壁 29 通孔 30 羽根車 31 吸込フランジ 32 吐出フランジ7 Liquid Sealing Ring 10 Shaft Sealing Part 10a Water Sealing Ring 21 Casing 22 Side Plate 23 Suction Port 24 Discharge Port 25 Casing Cover 26 Suction Chamber 27 Discharge Chamber 28 Pressure Chamber 28a Partition 29 Through Hole 30 Impeller 31 Suction Flange 32 Discharge Flange

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 内面が円筒のケーシング内に、上方に
して取付けられる羽根車を有し、該ケーシング内の回
転液膜の作動で気体を吸気・排気するようにした液封式
ポンプにおいて、上記ケーシングの両側のケーシングカ
バーの内部に形成された吸込室と吐出室を、軸心より下
方で、軸封部の封水リングに連通するように平行する隔
壁によって区画された圧力室によって分割し、上記ケー
シングの死点に相当する下方の最偏心位置部と、上記圧
力室とを通孔を介して導通させ、上記死点部の液膜圧力
水の一部を、該圧力室を経て軸封部の封水リングへ導い
て軸封するようにしたことを特徴とする液封式ポンプ。
To 1. A casing of the inner surface is circular cylinder, having an impeller mounted so as to be biased <br/> heart upward, so that the intake and exhaust gas at the operating rotational liquid film inside the casing In the liquid ring pump, the casing covers on both sides of the above casing are
Install the suction chamber and discharge chamber inside the bar below the axis.
The parallel seal so that it communicates with the seal ring of the shaft seal.
It is divided by pressure chambers divided by walls and
The most eccentric position below, which corresponds to the dead point of the single
It is characterized in that the pressure chamber is electrically connected to the force chamber through a through hole, and a part of the liquid film pressure water at the dead point is guided to the water sealing ring of the shaft sealing portion through the pressure chamber and is axially sealed. A liquid ring pump.
JP3178363A 1991-07-18 1991-07-18 Liquid ring pump Expired - Fee Related JPH086698B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3178363A JPH086698B2 (en) 1991-07-18 1991-07-18 Liquid ring pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3178363A JPH086698B2 (en) 1991-07-18 1991-07-18 Liquid ring pump

Publications (2)

Publication Number Publication Date
JPH05118285A JPH05118285A (en) 1993-05-14
JPH086698B2 true JPH086698B2 (en) 1996-01-29

Family

ID=16047187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3178363A Expired - Fee Related JPH086698B2 (en) 1991-07-18 1991-07-18 Liquid ring pump

Country Status (1)

Country Link
JP (1) JPH086698B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE337489T1 (en) * 2003-05-16 2006-09-15 Sterling Fluid Sys Gmbh LIQUID RING GAS PUMP
DE102005043434A1 (en) 2005-09-13 2007-03-15 Gardner Denver Elmo Technology Gmbh Device for adjusting the capacity of a liquid ring pump

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717107Y2 (en) * 1977-07-06 1982-04-09
JPS54126109U (en) * 1978-02-21 1979-09-03
JPS61167196A (en) * 1985-08-21 1986-07-28 Nakamura Suikan:Kk One step operation side air port type water ring pump

Also Published As

Publication number Publication date
JPH05118285A (en) 1993-05-14

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