JP5464944B2 - Liquid ring vacuum pump - Google Patents

Liquid ring vacuum pump Download PDF

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JP5464944B2
JP5464944B2 JP2009196978A JP2009196978A JP5464944B2 JP 5464944 B2 JP5464944 B2 JP 5464944B2 JP 2009196978 A JP2009196978 A JP 2009196978A JP 2009196978 A JP2009196978 A JP 2009196978A JP 5464944 B2 JP5464944 B2 JP 5464944B2
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ring vacuum
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JP2011047335A (en
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徹 牧野
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Nittan Co Ltd
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Description

本発明は液封式真空ポンプ装置に関し、特に、真空ポンプに供給する補給水を簡単な装置で冷却してポンプの破損や効率の低下を防止し、かつ、無駄に水を消費しないようにした液封式真空ポンプ装置に関するものである。   The present invention relates to a liquid ring vacuum pump device, and in particular, replenishment water supplied to the vacuum pump is cooled by a simple device to prevent the pump from being damaged or reduced in efficiency, and not to waste water. The present invention relates to a liquid ring vacuum pump device.

最近では、予作動弁の二次側配管内に負圧化した負圧湿式予作動式スプリンクラー設備が登場し、いくつかの物件で施工されている。この負圧湿式予作動式スプリンクラー設備は、負圧を得るために高湿度の空気や水滴も吸引可能な液封式真空ポンプ装置が用いられている。この液封式真空ポンプ装置では、封液に水を使用していて、封水がピストンの役割を果たして吸引するポンプである。この封水は、液封式真空ポンプの冷却にも使用される。ここで、液封式真空ポンプは、その内部を封水蒸気が占めるため、封水温度が高くなり、蒸気圧が大きくなると吸引効率が低下してしまう特性を有している。また、封水温度が上昇すると、ポンプ寿命を低下させる原因となる虞があった。 Recently, negative pressure wet pre-actuated sprinkler equipment has been introduced in the secondary piping of the pre-actuating valve, and has been installed in several properties. This negative圧湿type pre-activated sprinkler has high humidity of the air and water droplets attractable liquid ring vacuum pump device is used to obtain the negative pressure. In this liquid-sealed vacuum pump device, water is used as the liquid for sealing, and the sealed water serves as a piston for sucking. This sealed water is also used for cooling the liquid ring vacuum pump. Here, since the sealed water vapor occupies the liquid-sealed vacuum pump, the liquid-sealed vacuum pump has a characteristic that the suction efficiency decreases when the sealing water temperature increases and the vapor pressure increases. Further, when the sealing water temperature rises, there is a possibility that the pump life is reduced.

そこで、通常、補給水槽を併設し、運転時に低温の封水を供給し、吸引された空気とともに高温水を補給水槽に排出するようにしていた。
図６は、従来の一般的な液封式真空ポンプ装置を示す概略構成図である。 Therefore, a replenishing water tank is usually provided, low-temperature sealed water is supplied during operation, and high-temperature water is discharged together with the sucked air to the replenishing water tank.
FIG. 6 is a schematic configuration diagram showing a conventional general liquid ring vacuum pump apparatus.

この図６において、液封式真空ポンプ装置１０１は、吸引管１０２を介して所定場所の空気を吸引し排水・排気を吐出できる液封式真空ポンプ１０３と、液封式真空ポンプ１０３へ補給管１０４を介して封水を補給する補給水槽１０５と、前記液封式真空ポンプ１０３から吐き出された排水・排気を前記補給水槽１０５に戻す排水・排気管１０６と、冷水を補給するためのボールタップ１０７とを備えたものが一般的なものである。なお、補給水槽１０５の上部には、排気管１０８が設けられている。また、補給水槽１０５の所定の高さ部分には、補給水槽１０５内の水を排水する排水管１１０が設けられている。なお、排水の制御は、排水管１１０に設けた弁１０９の開閉によって行うようになっている。 In FIG. 6, a liquid ring vacuum pump device 101 includes a liquid ring vacuum pump 103 that can suck air in a predetermined place and discharge drainage / exhaust gas via a suction pipe 102, and a supply pipe to the liquid ring vacuum pump 103. 104 and replenishing water tank 105 for replenishing water seal through, and the liquid ring vacuum pump the wastewater and exhaust gas discharged from 103 back to the supply water tank 105 wastewater and exhaust pipe 106, the ball tap for replenishing cold water The one provided with 107 is a general one. An exhaust pipe 108 is provided on the top of the makeup water tank 105. Further, a drainage pipe 110 for draining water in the makeup water tank 105 is provided at a predetermined height portion of the makeup water tank 105. The drainage control is performed by opening and closing a valve 109 provided in the drainage pipe 110.

この液封式真空ポンプ１０３が動作すると、吸引管１０２を介して高湿度の空気や水滴を吸い込む。また、液封式真空ポンプ１０３の吐出口から吐き出された排水・排気は、排水・排気管１０６を介して補給水槽１０５に戻される。補給水槽１０５内に排出された排水・排気のうち、排気は排気管１０８を介して大気に放出され、排水は補給水槽１０５内の水と一緒になる。これにより、水を循環して使えるようにして大量の水を消費しなくてよいようになっている。
なお、封水を複雑な装置で冷却してから液封式真空ポンプに供給できるようにした液封式真空ポンプ装置が提案されている（特許文献１）。 When the liquid ring vacuum pump 103 is operated, high-humidity air or water droplets are sucked through the suction pipe 102. The drainage / exhaust discharged from the discharge port of the liquid ring vacuum pump 103 is returned to the replenishing water tank 105 via the drainage / exhaust pipe 106. Of the drainage / exhaust gas discharged into the make-up water tank 105, the exhaust gas is discharged to the atmosphere through the exhaust pipe 108, and the waste water is combined with the water in the make-up water tank 105. This makes it possible to circulate and use the water so that a large amount of water does not have to be consumed.
In addition, a liquid ring vacuum pump apparatus has been proposed in which the sealed water is cooled by a complicated apparatus and then supplied to the liquid ring vacuum pump (Patent Document 1).

特開平９−４２１７９号公報Japanese Patent Laid-Open No. 9-42179

上記一般的な液封式真空ポンプ装置では、繰り返し封水を使用ようにしているため、液封式真空ポンプ１０３を長時間運転したときには、補給水槽１０５内の水温が上昇する。補給水槽１０５内の水温が上昇したときには、液封式真空ポンプ１０３の効率の低下を招かないようにするため、弁１０９を開き排水管１１０より高温水を排出する。これに伴って、補給水槽１０５内の水位が下がるため、ボールタップ１０７より冷水の供給が行われる。   In the above general liquid ring vacuum pump apparatus, since the sealed water is repeatedly used, when the liquid ring vacuum pump 103 is operated for a long time, the water temperature in the replenishing water tank 105 rises. When the water temperature in the replenishing water tank 105 rises, the valve 109 is opened and high temperature water is discharged from the drain pipe 110 so as not to cause the efficiency of the liquid ring vacuum pump 103 to decrease. Along with this, the water level in the replenishing water tank 105 is lowered, so that cold water is supplied from the ball tap 107.

運転時に人員により状態監視が可能な設備の場合には、上で述べたように、人手によって弁１０９を開き排水管１１０より高温水を排出させ、これにより補給水槽１０５内の水位が低下することに伴ってボールタップ１０７を介して冷水を供給することが可能である。   In the case of equipment that can be monitored by personnel during operation, as described above, the valve 109 is manually opened and high-temperature water is discharged from the drain pipe 110, thereby lowering the water level in the makeup tank 105. Accordingly, it is possible to supply cold water via the ball tap 107.

ところが、スプリンクラー設備のように、２４時間運用で、いつ液封式真空ポンプ１０３が長時間運転するか不明な設備では、補給水槽１０５内部の水温の上昇が放置される可能性が高かった。   However, in a facility where it is unclear when the liquid ring vacuum pump 103 operates for a long time, such as a sprinkler facility, the rise in the water temperature inside the makeup water tank 105 is likely to be left unattended.

これを防止するために、水温上昇を警報する方法や、補給水槽１０５内の水温を監視し一定温度以上になったときに高温水を排出するとともに冷水の自動供給化するという方法があるが、これらはいずれも部品点数が多くなって、しかも、コストがかかるという欠点があった。   In order to prevent this, there is a method of alarming a rise in water temperature and a method of monitoring the water temperature in the makeup water tank 105 and discharging hot water when the temperature rises above a certain temperature and automatically supplying cold water. All of these have the disadvantage that the number of parts increases and the cost is high.

本発明は、上記の点に鑑みなされたものであって、簡単な構造でコストも少なくて済みかつ大量の水の消費を抑えた液封式真空ポンプ装置を提供しようとするものである。   The present invention has been made in view of the above points, and an object of the present invention is to provide a liquid ring vacuum pump apparatus that has a simple structure, is low in cost, and suppresses consumption of a large amount of water.

而して、本発明の要旨とするところは、吸引管を介して所定場所の空気を吸引し排水・排気を吐出できる液封式真空ポンプと、液封式真空ポンプへ補給管を介して封水を補給する補給水槽と、前記液封式真空ポンプから吐き出された排水・排気を前記補給水槽に戻す排水・排気管とを備えた液封式真空ポンプ装置において、
前記補給水槽は、その内部を仕切板によって二つの空間に分離され、一方の空間Ｂの容積を他方の空間Ａの容積より十分に大きくし、一方の空間Ｂと他方の空間Ａとを仕切板の上部で連通し、かつ他方の空間Ａと一方の空間Ｂとを構成させている仕切板の一定の高さ部分に開口部を設け、他方の空間Ａ内に所定の水が貯留したときに水を補給水槽の外部に排出する排水口を設け、液封式真空ポンプからの排水・排気を通す排水・排気管の末端部を他方の空間Ａ内に位置するように配置し、一方の空間Ｂ側に冷水を補給するボールタップを設けてなり、他方の空間Ａ内に所定の水が貯留したときに水を補給水槽の外部に排出する排水口は、他方の空間Ａと一方の空間Ｂとを構成させている仕切板の一定の高さ部分に設けた開口部と同じ高さか、それよりは少し上に設けたものであることを特徴とする液封式真空ポンプ装置にある。 Accordingly, the gist of the present invention is that a liquid ring vacuum pump capable of sucking air at a predetermined location through a suction pipe and discharging drainage / exhaust, and a liquid ring vacuum pump sealed via a supply pipe. In a liquid-sealed vacuum pump device comprising a replenishing water tank for replenishing water, and a drainage / exhaust pipe for returning drainage / exhaust discharged from the liquid-sealed vacuum pump to the replenishing water tank,
The replenishing water tank is separated into two spaces the interior by a partition plate, the volume of one of the space B is sufficiently larger than the volume of the other space A, one of the spatial B and other spatial A communicating with the top of the partition plate, and an opening is provided at a constant height portion of the partition plate that is constituting the other and air between the a and one of the space B, a predetermined water to the other spatial the a the drain outlet is provided but for discharging water to the outside of the replenishing water tank when storing, the distal end of the drainage and exhaust pipe through which waste water and exhaust from the liquid ring vacuum pump to be positioned at the other in the spatial a arrangement and made by providing a ball tap for supplying cold water in one spatial B side of the drainage port for discharging the water to the outside of the replenishing water tank when the predetermined water was stored in the other space a, the other space A or the same height as the opening provided in the constant height portion of the partition plate constituting one space B, In liquid ring vacuum pump and wherein the than Re those provided slightly above.

また、上記構成において、一方の空間Ｂの容量は他方の空間Ａの容量よりおよそ３倍以上に設定されていればよいものである。 In the above structure, the capacity of one of the spatial B are those may be set to approximately three times more than the capacity of the other spatial A.

本発明は上記の如き構成であるから、液封式真空ポンプに供給された封水は、排水・排気管を介して前記補給水槽の他方の空間に入り、この他方の空間において一部の封水は排水口より前記補給水槽の外部に排出され、他の封水は開口部より一方の空間に戻されるが、一方の空間内の水が他の空間内から供給される水より十分に多いため、十分に冷却されるとともに、一部の封水が前記補給水槽の外部に排出されることからボールタップより前記補給水槽の一方の空間内に冷水が供給され、前記補給水槽の一方の空間内の水温が低い状態に保たれる。これにより、液封式真空ポンプの破損や効率の低下を防止し、かつ、無駄に水を消費しないようにしたものである。Since the present invention is configured as described above, the sealed water supplied to the liquid-sealed vacuum pump enters the other space of the replenishing water tank through the drainage / exhaust pipe, and a part of the sealed water is sealed in the other space. Water is discharged from the drainage outlet to the outside of the makeup tank, and the other sealed water is returned to one space from the opening, but the water in one space is sufficiently larger than the water supplied from within the other space. Therefore, the water is sufficiently cooled and a part of the sealed water is discharged to the outside of the makeup water tank, so that cold water is supplied from the ball tap into one space of the makeup water tank. The water temperature is kept low. As a result, the liquid ring vacuum pump is prevented from being damaged and the efficiency is lowered, and water is not wasted.

本発明の実施形態に係る液封式真空ポンプ装置を示す概略構成図である。1 is a schematic configuration diagram illustrating a liquid ring vacuum pump device according to an embodiment of the present invention. 本発明の実施例に係る液封式真空ポンプ装置を示す正面図である。It is a front view which shows the liquid ring vacuum pump apparatus which concerns on the Example of this invention. 本発明の実施例に係る液封式真空ポンプ装置を示す側面図である。It is a side view which shows the liquid ring type vacuum pump apparatus which concerns on the Example of this invention. 本発明の実施例に係る液封式真空ポンプ装置を示す裏面図である。It is a back view which shows the liquid ring vacuum pump apparatus which concerns on the Example of this invention. 本発明の実施例に係る液封式真空ポンプ装置を示す平面図である。It is a top view which shows the liquid ring type vacuum pump apparatus which concerns on the Example of this invention. 従来の一般的な液封式真空ポンプ装置を示す概略構成図である。It is a schematic block diagram which shows the conventional common liquid ring vacuum pump apparatus.

図１は、本発明の実施形態に係る液封式真空ポンプ装置を示す概略的構成図である。FIG. 1 is a schematic configuration diagram showing a liquid ring vacuum pump device according to an embodiment of the present invention.
この図１において、液封式真空ポンプ装置１は、吸引管２を介して所定場所の空気を吸引し排水・排気を吐出できる液封式真空ポンプ３と、液封式真空ポンプ３へ補給管４を介して封水を補給する補給水槽５と、前記液封式真空ポンプ３から吐き出された排水・排気を前記補給水槽５に戻す排水・排気管６と、冷水を補給するためのボールタップ７とを備え、次のように構成したものである。In FIG. 1, a liquid ring vacuum pump apparatus 1 includes a liquid ring vacuum pump 3 that can suck air in a predetermined place through a suction pipe 2 and discharge waste water and exhaust, and a refill pipe to the liquid ring vacuum pump 3. 4, a replenishing water tank 5 for replenishing sealed water, a drainage / exhaust pipe 6 for returning drainage / exhaust discharged from the liquid ring vacuum pump 3 to the replenishing water tank 5, and a ball tap 7 for replenishing cold water And is configured as follows.

前記補給水槽５は、その内部を仕切板５１によって二つの空間５２、５３に分離し、一方の空間５２の容積を他方の空間５３の容積より十分に大きくし、一方の空間５２と他方の空間５３とは上部５４で連通し、かつ他方の空間５３を構成している仕切板５１の一定の高さｈの部分に開口部５５を設け、他方の空間５３内に所定の水が貯留したときに水を補給水槽５の外部に排出する排水口５６を設け、液封式真空ポンプ３からの排水・排気を通す排水・排気管６の末端部６ａを他方の空間５３内に配置し、一方の空間５２側に冷水を補給するボールタップ７を設けたものである。The interior of the replenishing water tank 5 is separated into two spaces 52 and 53 by a partition plate 51, and the volume of one space 52 is made sufficiently larger than the volume of the other space 53. When the opening 55 is provided in a portion of the partition plate 51 that is in communication with the upper portion 54 and that constitutes the other space 53 at a certain height h, and predetermined water is stored in the other space 53 A drain outlet 56 for discharging water to the outside of the replenishing water tank 5 is provided, and a terminal portion 6a of the drain / exhaust pipe 6 through which drainage / exhaust from the liquid ring vacuum pump 3 passes is disposed in the other space 53, The ball tap 7 for replenishing cold water is provided on the space 52 side.

なお、補給水槽５の上部には、排気管８が設けられている。また、補給水槽５の所定の高さ部分には、補給水槽５の一方の空間５２の内部の水を排出する排水管１０が設けられている。An exhaust pipe 8 is provided on the top of the makeup water tank 5. In addition, a drainage pipe 10 for discharging water inside one space 52 of the makeup water tank 5 is provided at a predetermined height portion of the makeup water tank 5.

この液封式真空ポンプ装置１について説明すると、補給水槽５から補給管４を介して液封式真空ポンプ３に供給された封水は、液封式真空ポンプ３から排水・排気管６を介して前記補給水槽５の他方の空間５３に入り、この他方の空間５３において一部の封水は排水口５６より前記補給水槽５の外部に排出され、他の封水は開口部５５より一方の空間５２に戻されるが、一方の空間５２の内部の水が他方の空間５３から供給される水より十分に多いため、十分に冷却されることになる。The liquid-sealed vacuum pump device 1 will be described. Sealed water supplied to the liquid-sealed vacuum pump 3 from the replenishing water tank 5 via the replenishing pipe 4 is discharged from the liquid-sealed vacuum pump 3 via the drainage / exhaust pipe 6. And enters the other space 53 of the make-up water tank 5, and in this other space 53, a part of the sealed water is discharged from the drain port 56 to the outside of the make-up water tank 5, and the other sealed water is one of the openings from the opening 55. Although the water is returned to the space 52, the water in one space 52 is sufficiently more than the water supplied from the other space 53, so that the water is sufficiently cooled.

また、一部の封水が排水口５６を介して前記補給水槽５の外部に排出されることから、ボールタップ７より前記補給水槽５の一方の空間５２内に冷水が供給されることになり、前記補給水槽５の一方の空間５２内の水の温度が低い状態に保たれる。Further, since a part of the sealed water is discharged to the outside of the replenishing water tank 5 through the drain port 56, cold water is supplied from the ball tap 7 into one space 52 of the replenishing water tank 5. The temperature of the water in one space 52 of the makeup water tank 5 is kept low.

これにより、液封式真空ポンプ３の破損や効率の低下を防止し、かつ、無駄に水を消費しないことになる。As a result, the liquid ring vacuum pump 3 is prevented from being damaged and the efficiency is lowered, and water is not wasted.

また、特別な冷却装置は必要なく、単に仕切板５１によって補給水槽５の内部を区画したのみであるので、安価にかつ簡単な装置で水を冷却することができる。Further, no special cooling device is required, and the interior of the replenishing water tank 5 is simply partitioned by the partition plate 51, so that water can be cooled with a simple and inexpensive device.
本実施の形態によれば、補給水の水温上昇を抑制し、経済的かつ効率的に液封式真空ポンプ３を運用できることになる。According to the present embodiment, the rise in the temperature of the makeup water can be suppressed, and the liquid ring vacuum pump 3 can be operated economically and efficiently.

図２は、本発明の実施例に係る液封式真空ポンプ装置を示す正面図である。図３は、本発明の実施例に係る液封式真空ポンプ装置を示す側面図である。図４は、本発明の実施例に係る液封式真空ポンプ装置を示す裏面図である。図５は本発明の実施例に係る液封式真空ポンプ装置を示す平面図である。なお、図１に示す液封式真空ポンプ装置１と同一構成要素には同一符号を用いて説明をする。FIG. 2 is a front view showing a liquid ring vacuum pump device according to an embodiment of the present invention. FIG. 3 is a side view showing a liquid ring vacuum pump device according to an embodiment of the present invention. FIG. 4 is a back view showing a liquid ring vacuum pump device according to an embodiment of the present invention. FIG. 5 is a plan view showing a liquid ring vacuum pump apparatus according to an embodiment of the present invention. The same constituent elements as those of the liquid ring vacuum pump apparatus 1 shown in FIG.

これらの図において、基台１１の上には、モータ１２に直結した液封式真空ポンプ３が設けられている。また、基台１１の上で、モータ１２及び液封式真空ポンプ３の横には、補給水槽５が設けられている。また、図３において基台１１の中央部付近で、図２において基台１１の両端側には、柱１３，１４が垂直に設けられている。これら柱１３、１４の図示上側には、制御盤１５が配置されている。In these drawings, a liquid ring vacuum pump 3 directly connected to a motor 12 is provided on a base 11. Further, a replenishment water tank 5 is provided on the base 11 next to the motor 12 and the liquid ring vacuum pump 3. Also, columns 13 and 14 are vertically provided near the center of the base 11 in FIG. 3 and on both ends of the base 11 in FIG. A control panel 15 is disposed above the pillars 13 and 14 in the figure.

前記補給水槽５は、図４及び図５に示すように、その内部を仕切板５１によって二つの空間５２、５３に分離し、一方の空間５２の容積を他方の空間５３の容積より例えば５倍以上になるように仕切り、一方の空間５２と他方の空間５３とは図４に示すように上部５４で連通し、かつ他方の空間５３を構成している仕切板５１の一定の高さｈの部分（一方の空間５２における水位より上の部分）に開口部５５を設け、他方の空間５３内に所定の水が貯留したときに水を補給水槽５の外部に排出する排水口５６を開口部５５の高さとほぼ同じ高さｈかそれよりやや上に設け、液封式真空ポンプ３からの排水・排気を通す排水・排気管６の末端部６ａを他方の空間５３内に配置し、一方の空間５２側に冷水を補給するボールタップ７を設けたものである。As shown in FIGS. 4 and 5, the inside of the makeup water tank 5 is separated into two spaces 52 and 53 by a partition plate 51, and the volume of one space 52 is, for example, 5 times the volume of the other space 53. As shown in FIG. 4, the first space 52 and the other space 53 communicate with each other at the upper portion 54, and the partition plate 51 constituting the other space 53 has a certain height h. An opening 55 is provided in a portion (a portion above the water level in one space 52), and a drain outlet 56 for discharging water to the outside of the replenishing water tank 5 when predetermined water is stored in the other space 53. The end portion 6a of the drainage / exhaust pipe 6 through which the drainage / exhaust from the liquid-sealed vacuum pump 3 passes is disposed in the other space 53. Provided with a ball tap 7 for replenishing cold water on the space 52 side A.

なお、吸引管２は、図示上側から液封式真空ポンプ３の吸込み口に連通されている。排水・排気管６の一端は液封式真空ポンプ３の吐出し口に連通されており、排水・排気管６の末端部６ａは補給水槽５内の他方の空間５３の上に連通されている。補給水槽５の下側には補給管４の一端が連通されており、補給管４の他端は液封式真空ポンプ３の封水吸込み口に連通されている。排水口５６は配管を介して排水管１０に連通されている。排水管１０は、補給水槽５の一方の空間５２に所定以上水が貯留したときに、排水するための管である。なお、上記実施例では、一方の空間５２の容量を他方の空間５３の容量より５倍以上と説明したが、これに限定されるものではなく、およそ３倍以上の容量差があれば実用となる。The suction tube 2 communicates with the suction port of the liquid ring vacuum pump 3 from the upper side in the figure. One end of the drainage / exhaust pipe 6 communicates with the discharge port of the liquid ring vacuum pump 3, and the end 6 a of the drainage / exhaust pipe 6 communicates with the other space 53 in the makeup water tank 5. . One end of the supply pipe 4 communicates with the lower side of the supply water tank 5, and the other end of the supply pipe 4 communicates with the sealed water suction port of the liquid ring vacuum pump 3. The drain port 56 communicates with the drain pipe 10 through a pipe. The drain pipe 10 is a pipe for draining water when a predetermined amount or more of water is stored in one space 52 of the makeup water tank 5. In the above-described embodiment, the capacity of one space 52 has been described as being five times or more than the capacity of the other space 53. However, the present invention is not limited to this. Become.

この実施例によれば、補給水槽５から補給管４を介して液封式真空ポンプ３に供給された封水は、排水・排気管６を介して前記補給水槽５の他方の空間５３に入る。この他方の空間５３において一部の封水は排水口５６より前記補給水槽５の外部に排出される。また、この他の封水は開口部５５より一方の空間５２に戻されることになるが、一方の空間５２の内部の水が他方の空間５３から供給される水より５倍以上多いため、十分に冷却されることになる。According to this embodiment, the sealed water supplied from the replenishing water tank 5 to the liquid ring vacuum pump 3 via the replenishing pipe 4 enters the other space 53 of the replenishing water tank 5 via the drainage / exhaust pipe 6. . In this other space 53, a part of the sealed water is discharged from the drain outlet 56 to the outside of the makeup water tank 5. Further, the other sealed water is returned to the one space 52 from the opening 55, but the water inside the one space 52 is more than five times more than the water supplied from the other space 53. It will be cooled down.

また、一部の封水が排水口５６を介して前記補給水槽５の外部に排出されることから、ボールタップ７より前記補給水槽５の一方の空間５２内に冷水が供給されることになって、前記補給水槽５の一方の空間５２内の水の温度が低い状態に保たれる。Moreover, since a part of the sealed water is discharged to the outside of the replenishing water tank 5 through the drain port 56, cold water is supplied from the ball tap 7 into one space 52 of the replenishing water tank 5. The temperature of the water in one space 52 of the makeup water tank 5 is kept low.

つまり、液封式真空ポンプ３の運転中に常に冷たい封水が液封式真空ポンプ３に供給されることになるため、封液の温度上昇が原因による液封式真空ポンプの破損や効率の低下を防止することができ、しかも封水の一部は外部に捨てられるものの、封水のほとんどが他方の空間５３から一方の空間５２に戻されるため、無駄に水を消費しないという利点がある。In other words, since the cold seal water is always supplied to the liquid ring vacuum pump 3 during the operation of the liquid ring vacuum pump 3, the liquid ring vacuum pump is damaged due to the rise in the temperature of the seal liquid and the efficiency is increased. Although a drop can be prevented and a part of the sealed water is discarded to the outside, most of the sealed water is returned from the other space 53 to the one space 52, so that there is an advantage that water is not consumed unnecessarily. .

１ 液封式真空ポンプ装置1 Liquid ring vacuum pump
２ 吸引管2 Suction tube
３ 液封式真空ポンプ3 Liquid ring vacuum pump
４ 補給管4 Supply pipe
５ 補給水槽5 makeup tank
６ 排水・排気管6 Drainage and exhaust pipe
７ ボールタップ7 Ball tap
５１ 仕切板51 divider
５２ 一方の空間52 One space
５３ 他方の空間53 The other space
５５ 開口部55 opening
５６ 排水口56 Drain outlet

Claims (2)

吸引管を介して所定場所の空気を吸引し排水・排気を吐出できる液封式真空ポンプと、液封式真空ポンプへ補給管を介して封水を補給する補給水槽と、前記液封式真空ポンプから吐き出された排水・排気を前記補給水槽に戻す排水・排気管とを備えた液封式真空ポンプ装置において、
前記補給水槽は、その内部を仕切板によって二つの空間に分離され、一方の空間Ｂの容積を他方の空間Ａの容積より十分に大きくし、一方の空間Ｂと他方の空間Ａとを仕切板の上部で連通し、かつ他方の空間Ａと一方の空間Ｂとを構成させている仕切板の一定の高さ部分に開口部を設け、他方の空間Ａ内に所定の水が貯留したときに水を補給水槽の外部に排出する排水口を設け、液封式真空ポンプからの排水・排気を通す排水・排気管の末端部を他方の空間Ａ内に位置するように配置し、一方の空間Ｂ側に冷水を補給するボールタップを設けてなり、他方の空間Ａ内に所定の水が貯留したときに水を補給水槽の外部に排出する排水口は、他方の空間Ａと一方の空間Ｂとを構成させている仕切板の一定の高さ部分に設けた開口部と同じ高さか、それよりは少し上に設けたものであることを特徴とする液封式真空ポンプ装置。 Liquid-sealed vacuum pump capable of sucking air at a predetermined location via a suction pipe and discharging drainage / exhaust, replenishing water tank for replenishing sealed water to the liquid-sealed vacuum pump via a replenishment pipe, and the liquid-sealed vacuum In a liquid ring vacuum pump device comprising a drainage / exhaust pipe for returning drainage / exhaust discharged from the pump to the replenishing water tank,
The replenishing water tank is separated into two spaces the interior by a partition plate, the volume of one of the space B is sufficiently larger than the volume of the other space A, one of the spatial B and other spatial A communicating with the top of the partition plate, and an opening is provided at a constant height portion of the partition plate that is constituting the other and air between the a and one of the space B, a predetermined water to the other spatial the a the drain outlet is provided but for discharging water to the outside of the replenishing water tank when storing, the distal end of the drainage and exhaust pipe through which waste water and exhaust from the liquid ring vacuum pump to be positioned at the other in the spatial a arrangement, and it is provided a ball tap for supplying cold water in one spatial B side of the drainage port for discharging the water to the outside of the replenishing water tank when the predetermined water was stored in the other space a, the other space A or the same height as the opening provided in the constant height portion of the partition plate constituting one space B, Liquid ring vacuum pump and wherein the than Re those provided slightly above. 一方の空間Ｂの容量は他方の空間Ａの容量よりおよそ３倍以上に設定されていればよいことを特徴とする請求項１記載の液封式真空ポンプ装置。
One spatial B of capacitance other spatial liquid ring vacuum pump apparatus according to claim 1, wherein the may be set to of about three times more than the capacity of the A.
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